From 56087bfcb07fd852b8c4ffd623f5c12055a2b2aa Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 13:47:17 +0200 Subject: [PATCH 001/967] Update package hashes --- conan/conanfile.py | 2 +- ports/decimal/portfile.cmake | 4 ++-- ports/decimal/vcpkg.json | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/conan/conanfile.py b/conan/conanfile.py index b58e67d74..32c5cecce 100644 --- a/conan/conanfile.py +++ b/conan/conanfile.py @@ -19,7 +19,7 @@ class CharconvConan(ConanFile): name = "boost_decimal" - version = "5.1.2" + version = "5.2.0" description = "Boost provides free peer-reviewed portable C++ source libraries" url = "https://github.com/cppalliance/decimal" homepage = "https://github.com/cppalliance/decimal" diff --git a/ports/decimal/portfile.cmake b/ports/decimal/portfile.cmake index fa33a0eb8..48028e3b3 100644 --- a/ports/decimal/portfile.cmake +++ b/ports/decimal/portfile.cmake @@ -7,8 +7,8 @@ vcpkg_from_github( OUT_SOURCE_PATH SOURCE_PATH REPO cppalliance/decimal - REF v5.1.2 - SHA512 e3c0a2542f30407c1a9f24679182f2ee2e826c9e65c58e208af7a7a11194709dbd473e0eea68b59bb398afd1c0ab5a8ac420a4c1c4d69198cc541773f0372dd6 + REF v5.2.0 + SHA512 631d438c906cb567c30629aad3daf97a336c0b532a16908249b09383e868ad51e8cca538680893a03d2a5c4fbcd153e52585dc5c1293e2db71579afb4cc94525 HEAD_REF master ) diff --git a/ports/decimal/vcpkg.json b/ports/decimal/vcpkg.json index 6f0fabd90..aaee3a375 100644 --- a/ports/decimal/vcpkg.json +++ b/ports/decimal/vcpkg.json @@ -1,6 +1,6 @@ { "name": "decimal", - "version": "5.1.2", + "version": "5.2.0", "description": "A C++14 implementation of IEEE 754 decimal floating point numbers", "homepage": "https://github.com/cppalliance/decimal", "license": "BSL-1.0", From b7aef95990e37aac7fa2ca1ab099b28b2db8c807 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 2 Sep 2025 16:52:27 +0200 Subject: [PATCH 002/967] Combine rounding logic --- include/boost/decimal/detail/fenv_rounding.hpp | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 603ddf95d..bb252bc4a 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -93,16 +93,8 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT } break; case rounding_mode::fe_dec_to_nearest: - // Round to even - if (trailing_num == 5U) - { - if (val % 2U == 1U) - { - ++val; - } - } - // ... or nearest - else if (trailing_num > 5U) + // Round to even or nearest + if (trailing_num > 5 || (trailing_num == 5U && ((val & 1U) == 1U))) { ++val; } From 4c8f9c0d3ba98da8773ad0c5ec8e85568873351f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 2 Sep 2025 16:52:38 +0200 Subject: [PATCH 003/967] Mark overflow case as unlikely --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index bb252bc4a..b8af2f94a 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -118,7 +118,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT // If the significand was e.g. 99'999'999 rounding up // would put it out of range again - if (static_cast(val) > max_significand_v) + if (BOOST_DECIMAL_UNLIKELY(static_cast(val) > max_significand_v)) { val /= 10U; ++exp; From efda9de096e8cb18ada7ac1d34331814384fbd80 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 2 Sep 2025 17:01:02 +0200 Subject: [PATCH 004/967] Don't use native type for comparisons of trailing num --- include/boost/decimal/detail/fenv_rounding.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index b8af2f94a..c6e1dcb1a 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -74,7 +74,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT const auto round {fegetround()}; int exp {1}; - const auto trailing_num {val % 10U}; + const auto trailing_num {static_cast(val % 10U)}; val /= 10U; // Default rounding mode @@ -94,7 +94,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT break; case rounding_mode::fe_dec_to_nearest: // Round to even or nearest - if (trailing_num > 5 || (trailing_num == 5U && ((val & 1U) == 1U))) + if (trailing_num > 5U || (trailing_num == 5U && ((val & 1U) == 1U))) { ++val; } From 9ea4638102a9547c35544ea4c5891bc0bd293650 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 2 Sep 2025 17:24:41 +0200 Subject: [PATCH 005/967] Change default rounding per IEEE 754-2019 Section 4.3.3 --- include/boost/decimal/cfenv.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/cfenv.hpp b/include/boost/decimal/cfenv.hpp index 9182d489a..072755bcf 100644 --- a/include/boost/decimal/cfenv.hpp +++ b/include/boost/decimal/cfenv.hpp @@ -21,7 +21,7 @@ BOOST_DECIMAL_EXPORT enum class rounding_mode : unsigned fe_dec_to_nearest_from_zero = 1 << 2, fe_dec_toward_zero = 1 << 3, fe_dec_upward = 1 << 4, - fe_dec_default = fe_dec_to_nearest_from_zero + fe_dec_default = fe_dec_to_nearest }; BOOST_DECIMAL_INLINE_VARIABLE rounding_mode _boost_decimal_global_rounding_mode {rounding_mode::fe_dec_default}; From 2966c9b695b2d468daece872a16c45afeece3014 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 10:43:46 +0200 Subject: [PATCH 006/967] Fix fe_dec_downared rounding mode --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index c6e1dcb1a..20848e6cf 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -87,7 +87,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT } break; case rounding_mode::fe_dec_downward: - if (trailing_num >= 5U && is_neg) + if (is_neg && trailing_num != 0U) { ++val; } From 736c36d9be578956d06be04d25e61ee45037f08a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 10:46:29 +0200 Subject: [PATCH 007/967] Update default rounding mode --- doc/modules/ROOT/pages/cfenv.adoc | 6 +++--- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 9e56a4701..fe86304eb 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -13,12 +13,12 @@ https://www.boost.org/LICENSE_1_0.txt IEEE 754 defines 5 rounding modes for Decimal Floating Point Types. 1. Downward -2. To nearest +2. To nearest (with ties to even) 3. To nearest from zero 4. Toward zero 5. Upward -NOTE: The default rounding mode is to nearest from zero (#3). +NOTE: The default rounding mode is to nearest with ties to even (#2) as specified in IEEE 754 Section 4.3.3 IMPORTANT: The rounding mode can only be changed at runtime. All `constexpr` calculations will use the default of to nearest from zero. @@ -36,7 +36,7 @@ enum class rounding_mode : unsigned fe_dec_to_nearest_from_zero = 1 << 2, fe_dec_toward_zero = 1 << 3, fe_dec_upward = 1 << 4, - fe_dec_default = fe_dec_to_nearest_from_zero + fe_dec_default = fe_dec_to_nearest }; rounding_mode fegetround() noexcept; diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 20848e6cf..70f2825af 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -53,7 +53,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT val /= 10U; int exp_delta {1}; - if (trailing_num >= 5U) + if (trailing_num > 5U || (trailing_num == 5U && ((val & 1U) == 1U))) { ++val; } From bc3582918ac5eff81b343a1c146d8d145611e4de Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:02:11 +0200 Subject: [PATCH 008/967] Increment version --- CMakeLists.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/CMakeLists.txt b/CMakeLists.txt index 2504622e5..c3538a23e 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -6,7 +6,7 @@ cmake_minimum_required(VERSION 3.10...3.20) # Set version explicitly if not part of Boost superproject if(NOT BOOST_SUPERPROJECT_VERSION) - set(BOOST_DECIMAL_VERSION 5.2.0) + set(BOOST_DECIMAL_VERSION 6.0.0) else() set(BOOST_DECIMAL_VERSION ${BOOST_SUPERPROJECT_VERSION}) endif() From 0cf8ade3edb5507ddb7e818fdfe81eee66ea054b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:09:18 +0200 Subject: [PATCH 009/967] Fix default rounding result --- test/test_fixed_width_trunc.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_fixed_width_trunc.cpp b/test/test_fixed_width_trunc.cpp index 44f50b097..27c46de4f 100644 --- a/test/test_fixed_width_trunc.cpp +++ b/test/test_fixed_width_trunc.cpp @@ -15,7 +15,7 @@ void test() constexpr T validation_val_1 {UINT32_C(1), 5}; constexpr T validation_val_2 {UINT32_C(12), 4}; constexpr T validation_val_3 {UINT32_C(123), 3}; - constexpr T validation_val_4 {UINT32_C(1235), 2}; + constexpr T validation_val_4 {UINT32_C(1234), 2}; constexpr T validation_val_5 {UINT32_C(12346), 1}; BOOST_TEST_EQ(rescale(test_val, 0), rescale(test_val)); From 285f1401d5d613a38e263fdec5cb0806ca901be5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:14:41 +0200 Subject: [PATCH 010/967] Fix test of rounding mode --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- test/test_fixed_width_trunc.cpp | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 70f2825af..da4cd4b52 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -94,7 +94,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT break; case rounding_mode::fe_dec_to_nearest: // Round to even or nearest - if (trailing_num > 5U || (trailing_num == 5U && ((val & 1U) == 1U))) + if (trailing_num > 5U || (trailing_num == 5U && val % 2U == 0U)) { ++val; } diff --git a/test/test_fixed_width_trunc.cpp b/test/test_fixed_width_trunc.cpp index 27c46de4f..44f50b097 100644 --- a/test/test_fixed_width_trunc.cpp +++ b/test/test_fixed_width_trunc.cpp @@ -15,7 +15,7 @@ void test() constexpr T validation_val_1 {UINT32_C(1), 5}; constexpr T validation_val_2 {UINT32_C(12), 4}; constexpr T validation_val_3 {UINT32_C(123), 3}; - constexpr T validation_val_4 {UINT32_C(1234), 2}; + constexpr T validation_val_4 {UINT32_C(1235), 2}; constexpr T validation_val_5 {UINT32_C(12346), 1}; BOOST_TEST_EQ(rescale(test_val, 0), rescale(test_val)); From 916735bd3ab7267d1fb5af481212eb12043fd611 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:34:49 +0200 Subject: [PATCH 011/967] Add not about rounding and evaluation --- doc/modules/ROOT/pages/cmath.adoc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index d1aec7f99..fb7f66a94 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -12,6 +12,8 @@ Decimal contains overloads for all functions from ``, and they have the s They are also all constexpr with C\\++14 unlike the built-in floating point types which require either C++23 or 26. Additionally, all functions are marked `noexcept`. +All of these functions are impacted by the global rounding mode as described in xref:cfenv.adoc[rounding modes] as well as the `DEC_FLT_EVAL_METHOD` from xref:cfloat.adoc[evaluation methods]. + == Basic Operations |=== From b864a5f99e30b45280540989dff1a0ae17798493 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:35:49 +0200 Subject: [PATCH 012/967] Add proper cross reference --- doc/modules/ROOT/pages/config.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/config.adoc b/doc/modules/ROOT/pages/config.adoc index d23ebc7ce..4194cd3b6 100644 --- a/doc/modules/ROOT/pages/config.adoc +++ b/doc/modules/ROOT/pages/config.adoc @@ -46,7 +46,7 @@ Again, it must be defined before inclusion of decimal headers like so: #include ---- -- `BOOST_DECIMAL_DEC_EVAL_METHOD`: See section for explanation +- `BOOST_DECIMAL_DEC_EVAL_METHOD`: See xref:cfloat.adoc[``] section for explanation [#configuration_automatic] == Automatic Configuration Macros From 53193180666703d65b6b39493c9bbc2954f56eb9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:37:59 +0200 Subject: [PATCH 013/967] Add cross reference to global rounding mode --- doc/modules/ROOT/pages/api_reference.adoc | 1 + 1 file changed, 1 insertion(+) diff --git a/doc/modules/ROOT/pages/api_reference.adoc b/doc/modules/ROOT/pages/api_reference.adoc index 8082c98ce..1ab16bd3c 100644 --- a/doc/modules/ROOT/pages/api_reference.adoc +++ b/doc/modules/ROOT/pages/api_reference.adoc @@ -36,6 +36,7 @@ enums, constants and macros that are provided in this library. == Enums - xref:charconv.adoc#chars_format[chars_format] +- xref:cfenv.adoc[rounding_mode] [#api_ref_constants] == Constants From 866747ba8af8d81d5bdeb9bc57aede90df26dbb2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:08:17 +0200 Subject: [PATCH 014/967] Update default in test --- test/test_fenv.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/test/test_fenv.cpp b/test/test_fenv.cpp index 11f051c53..67a952562 100644 --- a/test/test_fenv.cpp +++ b/test/test_fenv.cpp @@ -10,9 +10,9 @@ using namespace boost::decimal; void test_environment() { - BOOST_TEST(boost::decimal::fegetround() == boost::decimal::rounding_mode::fe_dec_to_nearest_from_zero); - BOOST_TEST(boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_to_nearest) == boost::decimal::rounding_mode::fe_dec_to_nearest); BOOST_TEST(boost::decimal::fegetround() == boost::decimal::rounding_mode::fe_dec_to_nearest); + BOOST_TEST(boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_to_nearest_from_zero) == boost::decimal::rounding_mode::fe_dec_to_nearest_from_zero); + BOOST_TEST(boost::decimal::fegetround() == boost::decimal::rounding_mode::fe_dec_to_nearest_from_zero); BOOST_TEST(boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_downward) == boost::decimal::rounding_mode::fe_dec_downward); BOOST_TEST(boost::decimal::fegetround() == boost::decimal::rounding_mode::fe_dec_downward); BOOST_TEST(boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_upward) == boost::decimal::rounding_mode::fe_dec_upward); From eba2d467bc441b9d984285125247f949f8784be4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:31:22 +0200 Subject: [PATCH 015/967] Manually implement rint --- include/boost/decimal/detail/cmath/rint.hpp | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/cmath/rint.hpp b/include/boost/decimal/detail/cmath/rint.hpp index c337a5158..b087931a8 100644 --- a/include/boost/decimal/detail/cmath/rint.hpp +++ b/include/boost/decimal/detail/cmath/rint.hpp @@ -29,16 +29,19 @@ namespace decimal { namespace detail { template -constexpr auto rint_impl(T1& sig, T2 exp, const bool sign) +constexpr auto rint_impl(T1& sig, T2 exp, const bool) { - using RoundType = std::conditional_t::value, decimal32_t, - std::conditional_t::value, decimal64_t, decimal128_t>>; - const T2 abs_exp { (exp < T2(0)) ? -exp : exp }; sig /= detail::pow10(static_cast(abs_exp - 1)); - detail::fenv_round(sig, sign); + const auto trailing_num {static_cast(sig % 10U)}; + sig /= 10U; + + if (trailing_num >= 5U) + { + ++sig; + } } // MSVC 14.1 warns of unary minus being applied to unsigned type from numeric_limits::min From b7b6596cc1589477385e8aeda0f86c490aeaa987 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 11:04:51 +0200 Subject: [PATCH 016/967] Update example --- examples/rounding_mode.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/examples/rounding_mode.cpp b/examples/rounding_mode.cpp index 63b79b937..67445d1d1 100644 --- a/examples/rounding_mode.cpp +++ b/examples/rounding_mode.cpp @@ -7,9 +7,9 @@ int main() { - BOOST_DECIMAL_ATTRIBUTE_UNUSED auto default_rounding_mode = boost::decimal::fegetround(); // Default is fe_dec_to_nearest_from_zero + BOOST_DECIMAL_ATTRIBUTE_UNUSED auto default_rounding_mode = boost::decimal::fegetround(); // Default is fe_dec_to_nearest - BOOST_DECIMAL_ATTRIBUTE_UNUSED auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_to_nearest); + BOOST_DECIMAL_ATTRIBUTE_UNUSED auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_to_nearest_from_zero); assert(default_rounding_mode != new_rounding_mode); From 23d1a21d4f390720e2c255be9a4ac577bdaf8ca7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 12:21:58 +0200 Subject: [PATCH 017/967] Fix testing of rounding of decimal32 --- test/test_constants.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/test/test_constants.cpp b/test/test_constants.cpp index 06144a05a..f9d9c0538 100644 --- a/test/test_constants.cpp +++ b/test/test_constants.cpp @@ -29,7 +29,8 @@ void test_constants() BOOST_TEST_EQ(Dec(0.5641895835477562869), inv_sqrtpi_v); BOOST_TEST_EQ(Dec(0.6931471805599453094), ln2_v); BOOST_TEST_EQ(Dec(2.302585092994045684), ln10_v); - BOOST_TEST_EQ(Dec(1.414213562373095049), sqrt2_v); + constexpr Dec root2 = Dec{UINT64_C(1414213562373095049), -18}; // Rounds different for decimal32 since it terminates with 35 + BOOST_TEST_EQ(root2, sqrt2_v); BOOST_TEST_EQ(Dec(1.732050807568877294), sqrt3_v); BOOST_TEST(abs(Dec(0.707106781186547524) - inv_sqrt2_v) <= std::numeric_limits::epsilon()); BOOST_TEST(abs(Dec(0.5773502691896257645) - inv_sqrt3_v) <= std::numeric_limits::epsilon()); From f33a11412b07abe03f40229c544807b634b32fd8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 12:22:09 +0200 Subject: [PATCH 018/967] Correct for new default rounding mode --- test/test_fenv.cpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/test/test_fenv.cpp b/test/test_fenv.cpp index 67a952562..db02c4dfa 100644 --- a/test/test_fenv.cpp +++ b/test/test_fenv.cpp @@ -42,9 +42,9 @@ void test_constructor_rounding() BOOST_TEST(boost::decimal::fegetround() == rounding_mode::fe_dec_to_nearest); BOOST_TEST_EQ(decimal32_t(1, 0), decimal32_t(1, 0)); - BOOST_TEST_EQ(decimal32_t(12'345'675, 0), decimal32_t(1'234'568, 1)); - BOOST_TEST_EQ(decimal32_t(-12'345'675, 0), decimal32_t(-1'234'568, 1)); - BOOST_TEST_EQ(decimal32_t(55'555'555, 0), decimal32_t(5'555'556, 1)); + BOOST_TEST_EQ(decimal32_t(12'345'675, 0), decimal32_t(1'234'567, 1)); + BOOST_TEST_EQ(decimal32_t(-12'345'675, 0), decimal32_t(-1'234'567, 1)); + BOOST_TEST_EQ(decimal32_t(55'555'555, 0), decimal32_t(5'555'555, 1)); BOOST_TEST_EQ(decimal32_t(55'555'556, 0), decimal32_t(5'555'556, 1)); // Toward zero From 60afadd44b48fc5c90f02c1b85bce93521af2490 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 13:43:35 +0200 Subject: [PATCH 019/967] Change consteval handling to match --- include/boost/decimal/detail/fenv_rounding.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index da4cd4b52..4b2e80d4b 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -26,7 +26,7 @@ constexpr auto fenv_round(T& val, bool = false) noexcept -> int val /= 10U; int exp_delta {1}; - if (trailing_num >= 5U) + if (trailing_num > 5U || (trailing_num == 5U && val % 2U == 0U)) { ++val; } @@ -53,7 +53,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT val /= 10U; int exp_delta {1}; - if (trailing_num > 5U || (trailing_num == 5U && ((val & 1U) == 1U))) + if (trailing_num > 5U || (trailing_num == 5U && val % 2U == 0U)) { ++val; } From c9c51e6c6ef07fe6f9a9fc6c421e7bd9078da2ed Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 13:53:10 +0200 Subject: [PATCH 020/967] Loosen tolerance --- test/test_sin_cos.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_sin_cos.cpp b/test/test_sin_cos.cpp index e479a9abd..0ab0727dd 100644 --- a/test/test_sin_cos.cpp +++ b/test/test_sin_cos.cpp @@ -57,7 +57,7 @@ void test_sin() auto ret_val {std::sin(val1)}; auto ret_dec {static_cast(sin(d1))}; - if (!BOOST_TEST(std::fabs(ret_val - ret_dec) < 35*std::numeric_limits::epsilon())) + if (!BOOST_TEST(std::fabs(ret_val - ret_dec) < 40*std::numeric_limits::epsilon())) { // LCOV_EXCL_START std::cerr << "Val 1: " << val1 From ad6aaa540cc22258c47458f050f9798324e78861 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 14:39:58 +0200 Subject: [PATCH 021/967] Significantly reduce evaluation type repitition --- include/boost/decimal/detail/cmath/acos.hpp | 14 +--------- include/boost/decimal/detail/cmath/acosh.hpp | 14 +--------- include/boost/decimal/detail/cmath/asin.hpp | 14 +--------- include/boost/decimal/detail/cmath/asinh.hpp | 14 +--------- .../decimal/detail/cmath/assoc_laguerre.hpp | 14 +--------- .../decimal/detail/cmath/assoc_legendre.hpp | 14 +--------- include/boost/decimal/detail/cmath/atan.hpp | 14 +--------- include/boost/decimal/detail/cmath/atan2.hpp | 14 +--------- include/boost/decimal/detail/cmath/atanh.hpp | 14 +--------- include/boost/decimal/detail/cmath/beta.hpp | 14 +--------- include/boost/decimal/detail/cmath/cbrt.hpp | 14 +--------- include/boost/decimal/detail/cmath/cos.hpp | 14 +--------- include/boost/decimal/detail/cmath/cosh.hpp | 14 +--------- .../boost/decimal/detail/cmath/ellint_1.hpp | 28 ++----------------- .../boost/decimal/detail/cmath/ellint_2.hpp | 28 ++----------------- include/boost/decimal/detail/cmath/erf.hpp | 28 ++----------------- include/boost/decimal/detail/cmath/exp.hpp | 14 +--------- include/boost/decimal/detail/cmath/exp2.hpp | 14 +--------- include/boost/decimal/detail/cmath/expm1.hpp | 14 +--------- include/boost/decimal/detail/cmath/frexp.hpp | 14 +--------- .../boost/decimal/detail/cmath/hermite.hpp | 14 +--------- .../boost/decimal/detail/cmath/laguerre.hpp | 14 +--------- include/boost/decimal/detail/cmath/ldexp.hpp | 14 +--------- .../boost/decimal/detail/cmath/legendre.hpp | 14 +--------- include/boost/decimal/detail/cmath/lgamma.hpp | 14 +--------- include/boost/decimal/detail/cmath/log.hpp | 14 +--------- include/boost/decimal/detail/cmath/log10.hpp | 14 +--------- include/boost/decimal/detail/cmath/log1p.hpp | 14 +--------- include/boost/decimal/detail/cmath/log2.hpp | 14 +--------- .../decimal/detail/cmath/riemann_zeta.hpp | 28 ++----------------- include/boost/decimal/detail/cmath/sin.hpp | 14 +--------- include/boost/decimal/detail/cmath/sinh.hpp | 14 +--------- include/boost/decimal/detail/cmath/sqrt.hpp | 14 +--------- include/boost/decimal/detail/cmath/tan.hpp | 14 +--------- include/boost/decimal/detail/cmath/tanh.hpp | 14 +--------- include/boost/decimal/detail/cmath/tgamma.hpp | 14 +--------- include/boost/decimal/detail/promotion.hpp | 17 +++++++++++ 37 files changed, 57 insertions(+), 520 deletions(-) diff --git a/include/boost/decimal/detail/cmath/acos.hpp b/include/boost/decimal/detail/cmath/acos.hpp index a54e2d566..a70df1e5d 100644 --- a/include/boost/decimal/detail/cmath/acos.hpp +++ b/include/boost/decimal/detail/cmath/acos.hpp @@ -72,19 +72,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto acos(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::acos_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/acosh.hpp b/include/boost/decimal/detail/cmath/acosh.hpp index 81dba6fbe..f1e514e86 100644 --- a/include/boost/decimal/detail/cmath/acosh.hpp +++ b/include/boost/decimal/detail/cmath/acosh.hpp @@ -119,19 +119,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto acosh(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::acosh_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/asin.hpp b/include/boost/decimal/detail/cmath/asin.hpp index 24ddfacf8..4b6febdeb 100644 --- a/include/boost/decimal/detail/cmath/asin.hpp +++ b/include/boost/decimal/detail/cmath/asin.hpp @@ -81,19 +81,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto asin(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::asin_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/asinh.hpp b/include/boost/decimal/detail/cmath/asinh.hpp index 1bd10ed52..039c127dc 100644 --- a/include/boost/decimal/detail/cmath/asinh.hpp +++ b/include/boost/decimal/detail/cmath/asinh.hpp @@ -87,19 +87,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto asinh(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::asinh_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/assoc_laguerre.hpp b/include/boost/decimal/detail/cmath/assoc_laguerre.hpp index bb1f3383a..ee8c810e6 100644 --- a/include/boost/decimal/detail/cmath/assoc_laguerre.hpp +++ b/include/boost/decimal/detail/cmath/assoc_laguerre.hpp @@ -69,19 +69,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto assoc_laguerre(const unsigned n, const unsigned m, const T x) BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::assoc_laguerre_impl(n, m, static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/assoc_legendre.hpp b/include/boost/decimal/detail/cmath/assoc_legendre.hpp index 0fbfadfda..5a058cf58 100644 --- a/include/boost/decimal/detail/cmath/assoc_legendre.hpp +++ b/include/boost/decimal/detail/cmath/assoc_legendre.hpp @@ -98,19 +98,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto assoc_legendre(const unsigned n, const unsigned m, const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::assoc_legendre_impl(n, m, static_cast(x), pow(1 - static_cast(x)*static_cast(x), diff --git a/include/boost/decimal/detail/cmath/atan.hpp b/include/boost/decimal/detail/cmath/atan.hpp index f5b7ab3b2..d4dd82286 100644 --- a/include/boost/decimal/detail/cmath/atan.hpp +++ b/include/boost/decimal/detail/cmath/atan.hpp @@ -104,19 +104,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto atan(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::atan_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/atan2.hpp b/include/boost/decimal/detail/cmath/atan2.hpp index bd2d03a2b..d1de750d7 100644 --- a/include/boost/decimal/detail/cmath/atan2.hpp +++ b/include/boost/decimal/detail/cmath/atan2.hpp @@ -152,19 +152,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto atan2(const T y, const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::atan2_impl(static_cast(y), static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/atanh.hpp b/include/boost/decimal/detail/cmath/atanh.hpp index e428a6704..8f1fd13c8 100644 --- a/include/boost/decimal/detail/cmath/atanh.hpp +++ b/include/boost/decimal/detail/cmath/atanh.hpp @@ -107,19 +107,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto atanh(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::atanh_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/beta.hpp b/include/boost/decimal/detail/cmath/beta.hpp index 133c1bc1a..eb06013a2 100644 --- a/include/boost/decimal/detail/cmath/beta.hpp +++ b/include/boost/decimal/detail/cmath/beta.hpp @@ -41,19 +41,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto beta(const T y, const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::beta_impl(static_cast(y), static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/cbrt.hpp b/include/boost/decimal/detail/cmath/cbrt.hpp index 8784926ed..884ac8ea3 100644 --- a/include/boost/decimal/detail/cmath/cbrt.hpp +++ b/include/boost/decimal/detail/cmath/cbrt.hpp @@ -184,19 +184,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto cbrt(const T val) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::cbrt_impl(static_cast(val))); } diff --git a/include/boost/decimal/detail/cmath/cos.hpp b/include/boost/decimal/detail/cmath/cos.hpp index 8f4d4c256..bcea6d4db 100644 --- a/include/boost/decimal/detail/cmath/cos.hpp +++ b/include/boost/decimal/detail/cmath/cos.hpp @@ -122,19 +122,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto cos(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::cos_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/cosh.hpp b/include/boost/decimal/detail/cmath/cosh.hpp index 794f01b3a..a48e912b5 100644 --- a/include/boost/decimal/detail/cmath/cosh.hpp +++ b/include/boost/decimal/detail/cmath/cosh.hpp @@ -87,19 +87,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto cosh(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::cosh_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/ellint_1.hpp b/include/boost/decimal/detail/cmath/ellint_1.hpp index 0208a6443..ec0c88cdd 100644 --- a/include/boost/decimal/detail/cmath/ellint_1.hpp +++ b/include/boost/decimal/detail/cmath/ellint_1.hpp @@ -168,19 +168,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto ellint_1(const T k, const T phi) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::ellint_1_impl(static_cast(k), static_cast(phi))); } @@ -189,19 +177,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto comp_ellint_1(const T k) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::comp_ellint_1_impl(static_cast(k))); } diff --git a/include/boost/decimal/detail/cmath/ellint_2.hpp b/include/boost/decimal/detail/cmath/ellint_2.hpp index 607053559..9d4887afa 100644 --- a/include/boost/decimal/detail/cmath/ellint_2.hpp +++ b/include/boost/decimal/detail/cmath/ellint_2.hpp @@ -166,19 +166,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto ellint_2(const T k, const T phi) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::ellint_2_impl(static_cast(k), static_cast(phi))); } @@ -187,19 +175,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto comp_ellint_2(const T k) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::comp_ellint_2_impl(static_cast(k))); } diff --git a/include/boost/decimal/detail/cmath/erf.hpp b/include/boost/decimal/detail/cmath/erf.hpp index ba5a0f6d4..df9bf00ee 100644 --- a/include/boost/decimal/detail/cmath/erf.hpp +++ b/include/boost/decimal/detail/cmath/erf.hpp @@ -803,19 +803,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto erf(const T z) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::erf_impl(static_cast(z))); } @@ -824,19 +812,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto erfc(const T z) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::erfc_impl(static_cast(z))); } diff --git a/include/boost/decimal/detail/cmath/exp.hpp b/include/boost/decimal/detail/cmath/exp.hpp index 03113d15f..777cc6251 100644 --- a/include/boost/decimal/detail/cmath/exp.hpp +++ b/include/boost/decimal/detail/cmath/exp.hpp @@ -96,19 +96,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto exp(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::exp_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/exp2.hpp b/include/boost/decimal/detail/cmath/exp2.hpp index c7dcd51d6..ff9170ed0 100644 --- a/include/boost/decimal/detail/cmath/exp2.hpp +++ b/include/boost/decimal/detail/cmath/exp2.hpp @@ -30,19 +30,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto exp2(const T num) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::exp2_impl(static_cast(num))); } diff --git a/include/boost/decimal/detail/cmath/expm1.hpp b/include/boost/decimal/detail/cmath/expm1.hpp index 858236d3f..9647c5977 100644 --- a/include/boost/decimal/detail/cmath/expm1.hpp +++ b/include/boost/decimal/detail/cmath/expm1.hpp @@ -86,19 +86,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto expm1(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::expm1_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/frexp.hpp b/include/boost/decimal/detail/cmath/frexp.hpp index 97ccac53a..cb9a29401 100644 --- a/include/boost/decimal/detail/cmath/frexp.hpp +++ b/include/boost/decimal/detail/cmath/frexp.hpp @@ -104,19 +104,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto frexp(const T v, int* expon) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::frexp_impl(static_cast(v), expon)); } diff --git a/include/boost/decimal/detail/cmath/hermite.hpp b/include/boost/decimal/detail/cmath/hermite.hpp index 2a26f107d..cf6724ad5 100644 --- a/include/boost/decimal/detail/cmath/hermite.hpp +++ b/include/boost/decimal/detail/cmath/hermite.hpp @@ -61,19 +61,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto hermite(const unsigned n, const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::hermite_impl(n, static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/laguerre.hpp b/include/boost/decimal/detail/cmath/laguerre.hpp index 9186410a3..6ddac23e9 100644 --- a/include/boost/decimal/detail/cmath/laguerre.hpp +++ b/include/boost/decimal/detail/cmath/laguerre.hpp @@ -61,19 +61,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto laguerre(const unsigned n, const T x) BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::laguerre_impl(n, static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/ldexp.hpp b/include/boost/decimal/detail/cmath/ldexp.hpp index 79d94e1c5..d1dccbacf 100644 --- a/include/boost/decimal/detail/cmath/ldexp.hpp +++ b/include/boost/decimal/detail/cmath/ldexp.hpp @@ -64,19 +64,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto ldexp(const T v, const int e2) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::ldexp_impl(static_cast(v), e2)); } diff --git a/include/boost/decimal/detail/cmath/legendre.hpp b/include/boost/decimal/detail/cmath/legendre.hpp index f7417014a..ddc8a2d81 100644 --- a/include/boost/decimal/detail/cmath/legendre.hpp +++ b/include/boost/decimal/detail/cmath/legendre.hpp @@ -78,19 +78,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto legendre(const unsigned n, const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::legendre_impl(n, static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/lgamma.hpp b/include/boost/decimal/detail/cmath/lgamma.hpp index f4e845769..aaa8ce945 100644 --- a/include/boost/decimal/detail/cmath/lgamma.hpp +++ b/include/boost/decimal/detail/cmath/lgamma.hpp @@ -126,19 +126,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto lgamma(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::lgamma_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/log.hpp b/include/boost/decimal/detail/cmath/log.hpp index 39a246177..6dea61f01 100644 --- a/include/boost/decimal/detail/cmath/log.hpp +++ b/include/boost/decimal/detail/cmath/log.hpp @@ -80,19 +80,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto log(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::log_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/log10.hpp b/include/boost/decimal/detail/cmath/log10.hpp index 3e2f86bcd..3b3b32bec 100644 --- a/include/boost/decimal/detail/cmath/log10.hpp +++ b/include/boost/decimal/detail/cmath/log10.hpp @@ -131,19 +131,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto log10(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::log10_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/log1p.hpp b/include/boost/decimal/detail/cmath/log1p.hpp index 15c8131fd..d23de14f1 100644 --- a/include/boost/decimal/detail/cmath/log1p.hpp +++ b/include/boost/decimal/detail/cmath/log1p.hpp @@ -78,19 +78,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto log1p(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::log1p_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/log2.hpp b/include/boost/decimal/detail/cmath/log2.hpp index 94e8bd861..c4ce12981 100644 --- a/include/boost/decimal/detail/cmath/log2.hpp +++ b/include/boost/decimal/detail/cmath/log2.hpp @@ -36,19 +36,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto log2(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::log2_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/riemann_zeta.hpp b/include/boost/decimal/detail/cmath/riemann_zeta.hpp index 490f63b8c..583de318d 100644 --- a/include/boost/decimal/detail/cmath/riemann_zeta.hpp +++ b/include/boost/decimal/detail/cmath/riemann_zeta.hpp @@ -205,19 +205,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto riemann_zeta(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::riemann_zeta_impl(static_cast(x))); } @@ -226,19 +214,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto riemann_zeta(const IntegralType n) noexcept BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, T, detail::is_integral_v, IntegralType, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; // TODO(ckormanyos) Consider making an integral-argument specialization. // Some exact values are known. Some simplifications for small-n are possible. diff --git a/include/boost/decimal/detail/cmath/sin.hpp b/include/boost/decimal/detail/cmath/sin.hpp index 586c10320..07000f97c 100644 --- a/include/boost/decimal/detail/cmath/sin.hpp +++ b/include/boost/decimal/detail/cmath/sin.hpp @@ -149,19 +149,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto sin(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::sin_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/sinh.hpp b/include/boost/decimal/detail/cmath/sinh.hpp index 43d3783e2..7b6fd6569 100644 --- a/include/boost/decimal/detail/cmath/sinh.hpp +++ b/include/boost/decimal/detail/cmath/sinh.hpp @@ -88,19 +88,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto sinh(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::sinh_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/sqrt.hpp b/include/boost/decimal/detail/cmath/sqrt.hpp index 0908b7278..418cecbf5 100644 --- a/include/boost/decimal/detail/cmath/sqrt.hpp +++ b/include/boost/decimal/detail/cmath/sqrt.hpp @@ -167,19 +167,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto sqrt(const T val) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::sqrt_impl(static_cast(val))); } diff --git a/include/boost/decimal/detail/cmath/tan.hpp b/include/boost/decimal/detail/cmath/tan.hpp index 2d63cc9cd..24b00bde8 100644 --- a/include/boost/decimal/detail/cmath/tan.hpp +++ b/include/boost/decimal/detail/cmath/tan.hpp @@ -134,19 +134,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto tan(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::tan_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/tanh.hpp b/include/boost/decimal/detail/cmath/tanh.hpp index 8d6fbb10f..b8d0c2b4c 100644 --- a/include/boost/decimal/detail/cmath/tanh.hpp +++ b/include/boost/decimal/detail/cmath/tanh.hpp @@ -95,19 +95,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto tanh(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::tanh_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/cmath/tgamma.hpp b/include/boost/decimal/detail/cmath/tgamma.hpp index 5daa832a5..9fd089ce8 100644 --- a/include/boost/decimal/detail/cmath/tgamma.hpp +++ b/include/boost/decimal/detail/cmath/tgamma.hpp @@ -132,19 +132,7 @@ BOOST_DECIMAL_EXPORT template constexpr auto tgamma(const T x) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { - #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 - - using evaluation_type = T; - - #elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 - - using evaluation_type = detail::promote_args_t; - - #else // BOOST_DECIMAL_DEC_EVAL_METHOD == 2 - - using evaluation_type = detail::promote_args_t; - - #endif + using evaluation_type = detail::evaluation_type_t; return static_cast(detail::tgamma_impl(static_cast(x))); } diff --git a/include/boost/decimal/detail/promotion.hpp b/include/boost/decimal/detail/promotion.hpp index 4dfcbaf86..dc60110b9 100644 --- a/include/boost/decimal/detail/promotion.hpp +++ b/include/boost/decimal/detail/promotion.hpp @@ -121,6 +121,23 @@ struct promote_args template using promote_args_t = typename promote_args::type; +#if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 + +template +using evaluation_type_t = T; + +#elif BOOST_DECIMAL_DEC_EVAL_METHOD == 1 + +template +using evaluation_type_t = detail::promote_args_t; + +#else + +template +using evaluation_type_t = detail::promote_args_t; + +#endif + } //namespace detail } //namespace decimal } //namespace boost From cb572499a320a75debb9bd0b9b67c727a2548c5c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 15:04:52 +0200 Subject: [PATCH 022/967] Add missing atan series for decimal_fast64_t --- .../decimal/detail/cmath/impl/atan_impl.hpp | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/include/boost/decimal/detail/cmath/impl/atan_impl.hpp b/include/boost/decimal/detail/cmath/impl/atan_impl.hpp index 54e56dedb..2b31b426b 100644 --- a/include/boost/decimal/detail/cmath/impl/atan_impl.hpp +++ b/include/boost/decimal/detail/cmath/impl/atan_impl.hpp @@ -165,6 +165,43 @@ constexpr auto atan_series(decimal64_t x) noexcept return (x * top) / bot; } +template <> +constexpr auto atan_series(decimal_fast64_t x) noexcept +{ + // PadeApproximant[ArcTan[x]/x, {x, 0, {12, 12}}] + // FullSimplify[%] + // HornerForm[Numerator[Out[2]]] + // HornerForm[Denominator[Out[2]]] + + const decimal_fast64_t x2 { x * x }; + + const decimal_fast64_t + top + { + decimal_fast64_t { UINT64_C( 58561878375) } + + x2 * (decimal_fast64_t { UINT64_C(163192434405) } + + x2 * (decimal_fast64_t { UINT64_C(169269290190) } + + x2 * (decimal_fast64_t { UINT64_C(80191217106) } + + x2 * (decimal_fast64_t { UINT64_C(16979477515) } + + x2 * (decimal_fast64_t { UINT32_C(1296036105) } + + x2 * decimal_fast64_t { UINT32_C(15728640) }))))) + }; + + const decimal_fast64_t + bot + { + decimal_fast64_t { UINT64_C(58561878375) } + + x2 * (decimal_fast64_t { UINT64_C(182713060530) } + + x2 * (decimal_fast64_t { UINT64_C(218461268025) } + + x2 * (decimal_fast64_t { UINT64_C(124835010300) } + + x2 * (decimal_fast64_t { UINT64_C(34493884425) } + + x2 * (decimal_fast64_t { UINT32_C(4058104050) } + + x2 * decimal_fast64_t { UINT32_C(135270135) }))))) + }; + + return (x * top) / bot; +} + template <> constexpr auto atan_series(decimal128_t x) noexcept { From f776a4f0a71dbaa0b0b3ea63aceee8e8aeace108 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 14:05:45 +0200 Subject: [PATCH 023/967] Remove deprecated headers --- include/boost/decimal/decimal128.hpp | 2143 ------------------ include/boost/decimal/decimal128_fast.hpp | 1443 ------------ include/boost/decimal/decimal128_t.hpp | 2143 +++++++++++++++++- include/boost/decimal/decimal32.hpp | 2169 ------------------- include/boost/decimal/decimal32_fast.hpp | 1510 ------------- include/boost/decimal/decimal32_t.hpp | 2169 ++++++++++++++++++- include/boost/decimal/decimal64.hpp | 2073 ------------------ include/boost/decimal/decimal64_fast.hpp | 1406 ------------ include/boost/decimal/decimal64_t.hpp | 2073 +++++++++++++++++- include/boost/decimal/decimal_fast128_t.hpp | 1443 +++++++++++- include/boost/decimal/decimal_fast32_t.hpp | 1510 ++++++++++++- include/boost/decimal/decimal_fast64_t.hpp | 1406 +++++++++++- 12 files changed, 10714 insertions(+), 10774 deletions(-) delete mode 100644 include/boost/decimal/decimal128.hpp delete mode 100644 include/boost/decimal/decimal128_fast.hpp delete mode 100644 include/boost/decimal/decimal32.hpp delete mode 100644 include/boost/decimal/decimal32_fast.hpp delete mode 100644 include/boost/decimal/decimal64.hpp delete mode 100644 include/boost/decimal/decimal64_fast.hpp diff --git a/include/boost/decimal/decimal128.hpp b/include/boost/decimal/decimal128.hpp deleted file mode 100644 index 619876a53..000000000 --- a/include/boost/decimal/decimal128.hpp +++ /dev/null @@ -1,2143 +0,0 @@ -// Copyright 2023 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_decimal128_t_HPP -#define BOOST_DECIMAL_decimal128_t_HPP - -#include -#include -#include -#include -#include -#include "detail/int128.hpp" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "detail/int128.hpp" -#include -#include -#include - -#ifndef BOOST_DECIMAL_BUILD_MODULE - -#include -#include -#include -#include -#include -#include -#include - -#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) -#include -#include -#include -#endif - -#endif //BOOST_DECIMAL_BUILD_MODULE - -namespace boost { -namespace decimal { - -namespace detail { - -// See IEEE 754 section 3.5.2 -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_inf_mask {UINT64_C(0x7800000000000000), UINT64_C(0)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_nan_mask {UINT64_C(0x7C00000000000000), UINT64_C(0)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_snan_mask {UINT64_C(0x7E00000000000000), UINT64_C(0)}; - -// Comb. Exponent Significand -// s eeeeeeeeeeeeee (0TTT) 110-bits -// s 11 eeeeeeeeeeeeee (100T) 110-bits - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_sign_mask {UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_mask = UINT64_C(0b0'11111111111111'000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_high_word_shift {49U}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_mask {UINT64_C(0b0'00'11111111111111'0000000'0000000000'0000000000'0000000000'0000000000)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_high_word_shift {47U}; - -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_not_11_significand_mask {UINT64_C(0b0'00000000000000'111111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_11_significand_mask {UINT64_C(0b0'00'00000000000000'1111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; - -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_biggest_no_combination_significand {d128_not_11_significand_mask}; - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_max_biased_exponent {UINT64_C(12287)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_max_significand_value {UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}; - -template -constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - -template -constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - -template -constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -} //namespace detail - -BOOST_DECIMAL_EXPORT class decimal128_t final -{ -public: - using significand_type = boost::int128::uint128_t; - using exponent_type = std::uint64_t; - using biased_exponent_type = std::int32_t; - -private: - int128::uint128_t bits_ {}; - - #ifdef BOOST_DECIMAL_HAS_INT128 - - friend constexpr auto from_bits(detail::builtin_uint128_t rhs) noexcept -> decimal128_t; - friend constexpr auto to_bits(decimal128_t rhs) noexcept -> detail::builtin_uint128_t; - - #endif - - friend constexpr auto from_bits(int128::uint128_t rhs) noexcept -> decimal128_t; - - constexpr auto unbiased_exponent() const noexcept -> std::uint64_t; - constexpr auto biased_exponent() const noexcept -> std::int32_t; - constexpr auto full_significand() const noexcept -> int128::uint128_t; - constexpr auto isneg() const noexcept -> bool; - constexpr auto to_components() const noexcept -> detail::decimal128_t_components; - - // Allows direct editing of the exp - template , bool> = true> - constexpr auto edit_exponent(T exp) noexcept -> void; - constexpr auto edit_sign(bool sign) noexcept -> void; - - // Attempts conversion to integral type: - // If this is nan sets errno to EINVAL and returns 0 - // If this is not representable sets errno to ERANGE and returns 0 - template - friend constexpr auto to_integral_128(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); - - template - friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); - - template - friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; - - template - friend BOOST_DECIMAL_FORCE_INLINE constexpr auto equality_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; - - // Equality template between any integer type and decimal128_t - template - friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - // Template to compare operator< for any integer type and decimal128_t - template - friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - friend constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, decimal128_t& q, decimal128_t& r) noexcept -> void; - - friend constexpr auto d128_mod_impl(const decimal128_t& lhs, const decimal128_t& rhs, const decimal128_t& q, decimal128_t& r) noexcept -> void; - - template - friend constexpr auto ilogb(T d) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); - - template - friend constexpr auto logb(T num) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); - - friend constexpr auto not_finite(decimal128_t rhs) noexcept -> bool; - - friend constexpr auto to_bid_d128(decimal128_t val) noexcept -> int128::uint128_t; - - friend constexpr auto from_bid_d128(int128::uint128_t bits) noexcept -> decimal128_t; - - #ifdef BOOST_DECIMAL_HAS_INT128 - friend constexpr auto from_bid_d128(detail::builtin_uint128_t bits) noexcept -> decimal128_t; - #endif - - template - friend constexpr auto to_dpd_d128(DecimalType val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, int128::uint128_t); - - template - friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; - - template - friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -public: - // 3.2.4.1 construct/copy/destroy - constexpr decimal128_t() noexcept = default; - constexpr decimal128_t& operator=(const decimal128_t& rhs) noexcept = default; - constexpr decimal128_t& operator=(decimal128_t&& rhs) noexcept = default; - constexpr decimal128_t(const decimal128_t& rhs) noexcept = default; - constexpr decimal128_t(decimal128_t&& rhs) noexcept = default; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS - explicit - #endif - BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t(Float val) noexcept; - - template - BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal128_t&); - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - explicit constexpr decimal128_t(Decimal val) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - constexpr decimal128_t(Integer val) noexcept; - - template - constexpr auto operator=(const Integer& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); - - // 3.2.5 initialization from coefficient and exponent: - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal128_t(T1 coeff, T2 exp, bool sign = false) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal128_t(T1 coeff, T2 exp) noexcept; - - explicit constexpr decimal128_t(bool value) noexcept; - - // 3.2.4.4 Conversion to integral type - explicit constexpr operator bool() const noexcept; - explicit constexpr operator int() const noexcept; - explicit constexpr operator unsigned() const noexcept; - explicit constexpr operator long() const noexcept; - explicit constexpr operator unsigned long() const noexcept; - explicit constexpr operator long long() const noexcept; - explicit constexpr operator unsigned long long() const noexcept; - - explicit constexpr operator boost::int128::int128_t() const noexcept; - explicit constexpr operator boost::int128::uint128_t() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_INT128 - explicit constexpr operator detail::builtin_int128_t() const noexcept; - explicit constexpr operator detail::builtin_uint128_t() const noexcept; - #endif - - // 3.2.6 Conversion to floating-point type - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_FLOAT16 - explicit constexpr operator std::float16_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT32 - explicit constexpr operator std::float32_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT64 - explicit constexpr operator std::float64_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 - explicit constexpr operator std::bfloat16_t() const noexcept; - #endif - - template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> - constexpr operator Decimal() const noexcept; - - template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> - explicit constexpr operator Decimal() const noexcept; - - // cmath functions that are easier as friends - friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; - friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; - friend constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; - friend constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; - friend constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; - friend constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; - - // 3.2.7 unary arithmetic operators: - friend constexpr auto operator+(decimal128_t rhs) noexcept -> decimal128_t; - friend constexpr auto operator-(decimal128_t rhs) noexcept -> decimal128_t; - - // 3.2.8 Binary arithmetic operators - friend constexpr auto operator+(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator+(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator+(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator-(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator-(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator-(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator*(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator*(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator*(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator/(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator/(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator/(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator%(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - // 3.2.4.5 Increment and Decrement - constexpr auto operator++() noexcept -> decimal128_t&; - constexpr auto operator++(int) noexcept -> decimal128_t; // NOLINT : C++14 so constexpr implies const - constexpr auto operator--() noexcept -> decimal128_t&; - constexpr auto operator--(int) noexcept -> decimal128_t; // NOLINT : C++14 so constexpr implies const - - // 3.2.4.6 Compound Assignment - constexpr auto operator+=(decimal128_t rhs) noexcept -> decimal128_t&; - - template - constexpr auto operator+=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); - - template - constexpr auto operator+=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); - - constexpr auto operator-=(decimal128_t rhs) noexcept -> decimal128_t&; - - template - constexpr auto operator-=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); - - template - constexpr auto operator-=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); - - constexpr auto operator*=(decimal128_t rhs) noexcept -> decimal128_t&; - - template - constexpr auto operator*=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); - - template - constexpr auto operator*=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); - - constexpr auto operator/=(decimal128_t rhs) noexcept -> decimal128_t&; - - template - constexpr auto operator/=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); - - template - constexpr auto operator/=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); - - constexpr auto operator%=(decimal128_t rhs) noexcept -> decimal128_t&; - - // 3.2.9 Comparison operators: - // Equality - friend constexpr auto operator==(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; - - template - friend constexpr auto operator==(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator==(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Inequality - friend constexpr auto operator!=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; - - template - friend constexpr auto operator!=(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Less - friend constexpr auto operator<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; - - template - friend constexpr auto operator<(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Less equal - friend constexpr auto operator<=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; - - template - friend constexpr auto operator<=(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Greater - friend constexpr auto operator>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; - - template - friend constexpr auto operator>(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Greater equal - friend constexpr auto operator>=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; - - template - friend constexpr auto operator>=(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // C++20 spaceship - #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - friend constexpr auto operator<=>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> std::partial_ordering; - - template - friend constexpr auto operator<=>(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - - template - friend constexpr auto operator<=>(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - #endif - - #if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) - friend inline std::string bit_string(decimal128_t rhs) noexcept; - #endif - - // 3.6.4 Same Quantum - friend constexpr auto samequantumd128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; - - // 3.6.5 Quantum exponent - friend constexpr auto quantexpd128(decimal128_t x) noexcept -> int; - - // 3.6.6 Quantize - friend constexpr auto quantized128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - // Bit-wise operators - friend constexpr auto operator&(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator&(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator&(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator|(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator|(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator|(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator^(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator^(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator^(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator<<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator<<(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator<<(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator>>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; - - template - friend constexpr auto operator>>(decimal128_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - template - friend constexpr auto operator>>(Integer lhs, decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); - - friend constexpr auto operator~(decimal128_t rhs) noexcept -> decimal128_t; - - // functions that need to be friends - template - friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; - - friend constexpr auto copysignd128(decimal128_t mag, decimal128_t sgn) noexcept -> decimal128_t; - friend constexpr auto scalblnd128(decimal128_t num, long exp) noexcept -> decimal128_t; - friend constexpr auto scalbnd128(decimal128_t num, int exp) noexcept -> decimal128_t; - friend constexpr auto fmad128(decimal128_t x, decimal128_t y, decimal128_t z) noexcept -> decimal128_t; -}; - -BOOST_DECIMAL_EXPORT using decimal128 [[deprecated("Use re-named type decimal128_t instead of decimal128")]] = decimal128_t; - -#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) -inline std::string bit_string(decimal128_t rhs) noexcept -{ - std::stringstream ss; - ss << std::hex << rhs.bits_.high << rhs.bits_.low; - return ss.str(); -} -#endif - -#ifdef BOOST_DECIMAL_HAS_INT128 - -constexpr auto from_bits(const detail::builtin_uint128_t rhs) noexcept -> decimal128_t -{ - decimal128_t result; - result.bits_ = rhs; - - return result; -} - -constexpr auto to_bits(const decimal128_t rhs) noexcept -> detail::builtin_uint128_t -{ - return static_cast(rhs.bits_); -} - -#endif - -constexpr auto from_bits(const int128::uint128_t rhs) noexcept -> decimal128_t -{ - decimal128_t result; - result.bits_ = rhs; - - return result; -} - -constexpr auto decimal128_t::unbiased_exponent() const noexcept -> exponent_type -{ - exponent_type expval {}; - - if ((bits_.high & detail::d128_combination_field_mask) == detail::d128_combination_field_mask) - { - expval = (bits_.high & detail::d128_11_exp_mask) >> detail::d128_11_exp_high_word_shift; - } - else - { - expval = (bits_.high & detail::d128_not_11_exp_mask) >> detail::d128_not_11_exp_high_word_shift; - } - - return expval; -} - -constexpr auto decimal128_t::biased_exponent() const noexcept -> biased_exponent_type -{ - return static_cast(unbiased_exponent()) - detail::bias_v; -} - -constexpr auto decimal128_t::full_significand() const noexcept -> significand_type -{ - significand_type significand {}; - - if ((bits_.high & detail::d128_combination_field_mask) == detail::d128_combination_field_mask) - { - constexpr int128::uint128_t implied_bit {UINT64_C(0b10000000000000000000000000000000000000000000000000),0}; - significand = implied_bit | (bits_ & detail::d128_11_significand_mask); - } - else - { - significand = bits_ & detail::d128_not_11_significand_mask; - } - - return significand; -} - -constexpr auto decimal128_t::isneg() const noexcept -> bool -{ - return static_cast(bits_.high & detail::d128_sign_mask); -} - -constexpr auto decimal128_t::to_components() const noexcept -> detail::decimal128_t_components -{ - significand_type significand {}; - exponent_type expval {}; - - if ((bits_.high & detail::d128_combination_field_mask) == detail::d128_combination_field_mask) - { - constexpr int128::uint128_t implied_bit {UINT64_C(0b10000000000000000000000000000000000000000000000000),0}; - significand = implied_bit | (bits_ & detail::d128_11_significand_mask); - expval = (bits_.high & detail::d128_11_exp_mask) >> detail::d128_11_exp_high_word_shift; - } - else - { - significand = bits_ & detail::d128_not_11_significand_mask; - expval = (bits_.high & detail::d128_not_11_exp_mask) >> detail::d128_not_11_exp_high_word_shift; - } - - const auto sign {static_cast(bits_.high & detail::d128_sign_mask)}; - - return detail::decimal128_t_components {significand, static_cast(expval) - detail::bias_v, sign}; -} - - -template , bool>> -constexpr auto decimal128_t::edit_exponent(const T expval) noexcept -> void -{ - *this = decimal128_t(this->full_significand(), expval, this->isneg()); -} - -constexpr auto decimal128_t::edit_sign(const bool sign) noexcept -> void -{ - if (sign) - { - bits_.high |= detail::d128_sign_mask; - } - else - { - constexpr auto not_sign_mask {~detail::d128_sign_mask}; - bits_.high &= not_sign_mask; - } -} - -#if defined(__GNUC__) && __GNUC__ >= 6 -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wduplicated-branches" -# pragma GCC diagnostic ignored "-Wconversion" -#endif - - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable : 4127) -#endif - -// e.g. for sign bits_.high |= detail::d128_sign_mask -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept -{ - bits_.high = sign ? detail::d128_sign_mask : UINT64_C(0); - - // If the coeff is not in range make it so - // The coefficient needs at least 110 bits so there's a good chance we don't need to - // We use sizeof instead of std::numeric_limits since __int128 on GCC prior to 14 without GNU mode does not overload - // numeric_limits - int coeff_digits {-1}; - BOOST_DECIMAL_IF_CONSTEXPR (sizeof(T1) >= sizeof(significand_type)) - { - if (coeff > detail::d128_max_significand_value) - { - constexpr auto precision_plus_one {detail::precision_v + 1}; - coeff_digits = detail::d128_constructor_num_digits(coeff); - if (coeff_digits > precision_plus_one) - { - const auto digits_to_remove {coeff_digits - precision_plus_one}; - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif - - coeff /= detail::pow10(static_cast(digits_to_remove)); - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif - - coeff_digits -= digits_to_remove; - exp += detail::fenv_round(coeff, sign) + digits_to_remove; - } - // Round as required - else - { - exp += detail::fenv_round(coeff, sign); - } - } - } - - constexpr int128::uint128_t zero {0, 0}; - auto reduced_coeff {static_cast(coeff)}; - - if (reduced_coeff == zero) - { - return; - } - - // The decimal128_t case is more straightforward than the others - // The precision of the type is 34, and 34x 9s fits into 113 bits, - // therefore we never need to use the combination field for additional space - - bits_ |= (reduced_coeff & detail::d128_not_11_significand_mask); - - // If the exponent fits we do not need to use the combination field - const auto biased_exp {static_cast(exp + detail::bias_v)}; - if (biased_exp <= detail::d128_max_biased_exponent) - { - bits_.high |= (biased_exp << detail::d128_not_11_exp_high_word_shift) & detail::d128_not_11_exp_mask; - } - else - { - // If we can fit the extra exponent in the significand, then we can construct the value - // If we can't, the value is either 0 or infinity depending on the sign of exp - - if (coeff_digits == -1) - { - coeff_digits = detail::num_digits(reduced_coeff); - } - - const auto exp_delta {biased_exp - detail::d128_max_biased_exponent}; - const auto digit_delta {coeff_digits - static_cast(exp_delta)}; - if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) - { - exp -= digit_delta; - reduced_coeff *= detail::pow10(static_cast(digit_delta)); - *this = decimal128_t(reduced_coeff, exp, sign); - } - else - { - bits_ = exp < 0 ? zero : detail::d128_inf_mask; - } - } -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal128_t::decimal128_t(const T1 coeff, const T2 exp) noexcept : decimal128_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} - -constexpr decimal128_t::decimal128_t(const bool value) noexcept : decimal128_t(static_cast(value), 0, false) {} - - -#ifdef _MSC_VER -# pragma warning(pop) -#endif - -#if defined(__GNUC__) && __GNUC__ >= 6 -# pragma GCC diagnostic pop -#endif - -#if defined(__clang__) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wfloat-equal" -#elif defined(__GNUC__) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wfloat-equal" -#endif - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::decimal128_t(const Float val) noexcept -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val != val) - { - *this = from_bits(detail::d128_nan_mask); - } - else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) - { - *this = from_bits(detail::d128_inf_mask); - } - else - #endif - { - const auto components {detail::ryu::floating_point_to_fd128(val)}; - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "Mant: " << components.mantissa - << "\nExp: " << components.exponent - << "\nSign: " << components.sign << std::endl; - #endif - - if (components.exponent > detail::emax_v) - { - *this = from_bits(detail::d128_inf_mask); - } - else - { - *this = decimal128_t {components.mantissa, components.exponent, components.sign}; - } - } -} - -#if defined(__clang__) -# pragma clang diagnostic pop -#elif defined(__GNUC__) -# pragma GCC diagnostic pop -#endif - -template -BOOST_DECIMAL_CXX20_CONSTEXPR auto decimal128_t::operator=(const Float& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal128_t&) -{ - *this = decimal128_t{val}; - return *this; -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal128_t::decimal128_t(const Integer val) noexcept : decimal128_t{val, 0} {} - -template -constexpr auto decimal128_t::operator=(const Integer& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) -{ - using ConversionType = std::conditional_t::value, std::int32_t, Integer>; - *this = decimal128_t{static_cast(val), 0}; - return *this; -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal128_t::decimal128_t(const Decimal val) noexcept -{ - *this = to_decimal(val); -} - -constexpr decimal128_t::operator bool() const noexcept -{ - constexpr decimal128_t zero {0, 0}; - return *this != zero; -} - -constexpr decimal128_t::operator int() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator unsigned() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator long() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator unsigned long() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator long long() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator unsigned long long() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator boost::int128::int128_t() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator boost::int128::uint128_t() const noexcept -{ - return to_integral_128(*this); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 - -constexpr decimal128_t::operator detail::builtin_int128_t() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal128_t::operator detail::builtin_uint128_t() const noexcept -{ - return to_integral_128(*this); -} - -#endif //BOOST_DECIMAL_HAS_INT128 - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator float() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator double() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator long double() const noexcept -{ - return to_float(*this); -} - -#ifdef BOOST_DECIMAL_HAS_FLOAT16 -constexpr decimal128_t::operator std::float16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT32 -constexpr decimal128_t::operator std::float32_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT64 -constexpr decimal128_t::operator std::float64_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 -constexpr decimal128_t::operator std::bfloat16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif - -template && (detail::decimal_val_v > detail::decimal_val_v), bool>> -constexpr decimal128_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> -constexpr decimal128_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool -{ - return rhs.bits_.high & detail::d128_sign_mask; -} - -constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_.high & detail::d128_nan_mask.high) == detail::d128_nan_mask.high; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_.high & detail::d128_nan_mask.high) == detail::d128_inf_mask.high; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_.high & detail::d128_snan_mask.high) == detail::d128_snan_mask.high; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check for de-normals - const auto sig {rhs.full_significand()}; - const auto exp {rhs.unbiased_exponent()}; - - if (exp <= detail::precision_v - 1) - { - return false; - } - - return (sig != 0U) && isfinite(rhs); - #else - return rhs.full_significand() != 0U; - #endif -} - -constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_.high & detail::d128_inf_mask.high) != detail::d128_inf_mask.high; - #else - static_cast(rhs); - return true; - #endif -} - -BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal128_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_.high & detail::d128_inf_mask.high) == detail::d128_inf_mask.high; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto operator+(const decimal128_t rhs) noexcept -> decimal128_t -{ - return rhs; -} - -constexpr auto operator-(decimal128_t rhs) noexcept-> decimal128_t -{ - rhs.bits_.high ^= detail::d128_sign_mask; - return rhs; -} - - -constexpr auto operator==(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool -{ - return equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(rhs, lhs); -} - -constexpr auto operator!=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -constexpr auto operator<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - if (isnan(lhs) || isnan(rhs) || - (!lhs.isneg() && rhs.isneg())) - { - return false; - } - if (lhs.isneg() && !rhs.isneg()) - { - return true; - } - if (isfinite(lhs) && isinf(rhs)) - { - return !rhs.isneg(); - } - } - #endif - - return less_parts_impl(lhs.full_significand(), lhs.biased_exponent(), lhs.isneg(), - rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()); -} - -template -constexpr auto operator<(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !less_impl(rhs, lhs) && lhs != rhs; -} - -constexpr auto operator<=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -constexpr auto operator>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -constexpr auto operator>=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator<=>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> std::partial_ordering -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -#endif - -#ifdef BOOST_DECIMAL_DEBUG_ADD_128 -static char* mini_to_chars( char (&buffer)[ 64 ], boost::decimal::detail::builtin_uint128_t v ) -{ - char* p = buffer + 64; - *--p = '\0'; - - do - { - *--p = "0123456789"[ v % 10 ]; - v /= 10; - } - while ( v != 0 ); - - return p; -} - -#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) -std::ostream& operator<<( std::ostream& os, boost::decimal::detail::builtin_uint128_t v ) -{ - char buffer[ 64 ]; - - os << mini_to_chars( buffer, v ); - return os; -} -#endif -#endif - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable: 4127) // If constexpr macro only works for C++17 and above -#endif - -constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, decimal128_t& q, decimal128_t& r) noexcept -> void -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal128_t zero {0, 0}; - constexpr decimal128_t nan {boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask)}; - constexpr decimal128_t inf {boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask)}; - - const bool sign {lhs.isneg() != rhs.isneg()}; - - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) - { - q = nan; - r = nan; - return; - } - - switch (lhs_fp) - { - case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; - return; - case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; - return; - default: - static_cast(lhs); - } - - switch (rhs_fp) - { - case FP_ZERO: - q = inf; - r = zero; - return; - case FP_INFINITE: - q = sign ? -zero : zero; - r = lhs; - return; - default: - static_cast(rhs); - } - #else - static_cast(r); - #endif - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "sig lhs: " << sig_lhs - << "\nexp lhs: " << exp_lhs - << "\nsig rhs: " << sig_rhs - << "\nexp rhs: " << exp_rhs << std::endl; - #endif - - detail::decimal128_t_components lhs_components {sig_lhs, exp_lhs, lhs.isneg()}; - detail::decimal128_t_components rhs_components {sig_rhs, exp_rhs, rhs.isneg()}; - detail::decimal128_t_components q_components {}; - - detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); - - q = decimal128_t(q_components.sig, q_components.exp, q_components.sign); -} - -#ifdef _MSC_VER -# pragma warning(pop) -#endif - -constexpr auto d128_mod_impl(const decimal128_t& lhs, const decimal128_t& rhs, const decimal128_t& q, decimal128_t& r) noexcept -> void -{ - constexpr decimal128_t zero {0, 0}; - - auto q_trunc {q > zero ? floor(q) : ceil(q)}; - r = lhs - (decimal128_t(q_trunc) * rhs); -} - -constexpr auto operator+(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - auto lhs_sig {lhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); - - auto rhs_sig {rhs.full_significand()}; - auto rhs_exp {rhs.biased_exponent()}; - detail::normalize(rhs_sig, rhs_exp); - - return detail::d128_add_impl(lhs_sig, lhs_exp, lhs.isneg(), - rhs_sig, rhs_exp, rhs.isneg(), - abs(lhs) > abs(rhs)); -} - -template -constexpr auto operator+(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - using exp_type = decimal128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d128_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator+(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return rhs + lhs; -} - -// NOLINTNEXTLINE: If subtraction is actually addition than use operator+ and vice versa -constexpr auto operator-(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d128_sub_impl( - sig_lhs, exp_lhs, lhs.isneg(), - sig_rhs, exp_rhs, rhs.isneg(), - abs(lhs) > abs(rhs)); -} - -template -constexpr auto operator-(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - using exp_type = decimal128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d128_sub_impl( - sig_lhs, exp_lhs, lhs.isneg(), - sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator-(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - using exp_type = decimal128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(rhs)) - { - return rhs; - } - #endif - - auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; - - exp_type exp_lhs {0}; - detail::normalize(sig_lhs, exp_lhs); - - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d128_sub_impl( - sig_lhs, exp_lhs, (lhs < 0), - sig_rhs, exp_rhs, rhs.isneg(), - abs_lhs_bigger); -} - -constexpr auto operator*(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - const auto lhs_sig {lhs.full_significand()}; - const auto lhs_exp {lhs.biased_exponent()}; - - const auto rhs_sig {rhs.full_significand()}; - const auto rhs_exp {rhs.biased_exponent()}; - - return detail::d128_mul_impl( - lhs_sig, lhs_exp, lhs.isneg(), - rhs_sig, rhs_exp, rhs.isneg()); -} - -template -constexpr auto operator*(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - using exp_type = decimal128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto lhs_sig {lhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - const auto lhs_zeros {detail::remove_trailing_zeros(lhs_sig)}; - lhs_sig = lhs_zeros.trimmed_number; - lhs_exp += static_cast(lhs_zeros.number_of_removed_zeros); - - auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; - const auto rhs_zeros {detail::remove_trailing_zeros(rhs_sig)}; - rhs_sig = rhs_zeros.trimmed_number; - const auto rhs_exp = static_cast(rhs_zeros.number_of_removed_zeros); - - return detail::d128_mul_impl( - lhs_sig, lhs_exp, lhs.isneg(), - rhs_sig, rhs_exp, (rhs < 0)); - -} - -template -constexpr auto operator*(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return rhs * lhs; -} - -constexpr auto operator/(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - decimal128_t q {}; - decimal128_t r {}; - d128_div_impl(lhs, rhs, q, r); - - return q; -} - -template -constexpr auto operator/(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal128_t zero {0, 0}; - constexpr decimal128_t nan {boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask)}; - constexpr decimal128_t inf {boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask)}; - - const bool sign {lhs.isneg() != (rhs < 0)}; - - const auto lhs_fp {fpclassify(lhs)}; - - switch (lhs_fp) - { - case FP_NAN: - return nan; - case FP_INFINITE: - return inf; - case FP_ZERO: - return sign ? -zero : zero; - default: - static_cast(lhs); - } - - if (rhs == 0) - { - return sign ? -inf : inf; - } - #endif - - auto lhs_sig {lhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); - - const detail::decimal128_t_components lhs_components {lhs_sig, lhs_exp, lhs.isneg()}; - - const detail::decimal128_t_components rhs_components {detail::make_positive_unsigned(rhs), 0, rhs < 0}; - detail::decimal128_t_components q_components {}; - - detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); - - return decimal128_t(q_components.sig, q_components.exp, q_components.sign); -} - -template -constexpr auto operator/(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal128_t zero {0, 0}; - constexpr decimal128_t inf {boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask)}; - constexpr decimal128_t nan {boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask)}; - - const bool sign {(lhs < 0) != rhs.isneg()}; - - const auto rhs_fp {fpclassify(rhs)}; - - if (rhs_fp == FP_NAN) - { - return nan; - } - - switch (rhs_fp) - { - case FP_INFINITE: - return sign ? -zero : zero; - case FP_ZERO: - return sign ? -inf : inf; - default: - static_cast(lhs); - } - #endif - - auto rhs_sig {rhs.full_significand()}; - auto rhs_exp {rhs.biased_exponent()}; - detail::normalize(rhs_sig, rhs_exp); - - const detail::decimal128_t_components lhs_components {detail::make_positive_unsigned(lhs), 0, lhs < 0}; - const detail::decimal128_t_components rhs_components {rhs_sig, rhs_exp, rhs.isneg()}; - detail::decimal128_t_components q_components {}; - - detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); - - return decimal128_t(q_components.sig, q_components.exp, q_components.sign); -} - -constexpr auto operator%(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - decimal128_t q {}; - decimal128_t r {}; - d128_div_impl(lhs, rhs, q, r); - d128_mod_impl(lhs, rhs, q, r); - - return r; -} - -constexpr auto decimal128_t::operator++() noexcept -> decimal128_t& -{ - constexpr decimal128_t one{1, 0}; - *this = *this + one; - return *this; -} - -constexpr auto decimal128_t::operator++(int) noexcept -> decimal128_t -{ - return ++(*this); -} - -constexpr auto decimal128_t::operator--() noexcept -> decimal128_t& -{ - constexpr decimal128_t one{1, 0}; - *this = *this - one; - return *this; -} - -constexpr auto decimal128_t::operator--(int) noexcept -> decimal128_t -{ - return --(*this); -} - -constexpr auto decimal128_t::operator+=(const decimal128_t rhs) noexcept -> decimal128_t& -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator+=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator+=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) -{ - *this = *this + rhs; - return *this; -} - -constexpr auto decimal128_t::operator-=(const decimal128_t rhs) noexcept -> decimal128_t& -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator-=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator-=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) -{ - *this = *this - rhs; - return *this; -} - -constexpr auto decimal128_t::operator*=(const decimal128_t rhs) noexcept -> decimal128_t& -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator*=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator*=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) -{ - *this = *this * rhs; - return *this; -} - -constexpr auto decimal128_t::operator/=(const decimal128_t rhs) noexcept -> decimal128_t& -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator/=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal128_t::operator/=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) -{ - *this = *this / rhs; - return *this; -} - -constexpr auto decimal128_t::operator%=(const decimal128_t rhs) noexcept -> decimal128_t& -{ - *this = *this % rhs; - return *this; -} - -// 3.6.4 -// Effects: determines if the quantum exponents of x and y are the same. -// If both x and y are NaN, or infinity, they have the same quantum exponents; -// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. -// The samequantum functions raise no exception. -constexpr auto samequantumd128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) - { - return true; - } - if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) - { - return false; - } - #endif - - return lhs.unbiased_exponent() == rhs.unbiased_exponent(); -} - -// 3.6.5 -// Effects: if x is finite, returns its quantum exponent. -// Otherwise, a domain error occurs and INT_MIN is returned. -constexpr auto quantexpd128(const decimal128_t x) noexcept -> int -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(x)) - { - return INT_MIN; - } - #endif - - return static_cast(x.unbiased_exponent()); -} - -// 3.6.6 -// Returns: a number that is equal in value (except for any rounding) and sign to x, -// and which has an exponent set to be equal to the exponent of y. -// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; -// if the result does not have the same value as x, the "inexact" floating-point exception is raised. -// If the exponent is being decreased and the significand of the result has more digits than the type would allow, -// the "invalid" floating-point exception is raised and the result is NaN. -// If one or both operands are NaN the result is NaN. -// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. -// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. -// The quantize functions do not signal underflow. -constexpr auto quantized128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Return the correct type of nan - if (isnan(lhs)) - { - return lhs; - } - else if (isnan(rhs)) - { - return rhs; - } - - // If one is infinity then return a signaling NAN - if (isinf(lhs) != isinf(rhs)) - { - return boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask); - } - else if (isinf(lhs) && isinf(rhs)) - { - return lhs; - } - #endif - - return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; -} - -constexpr auto operator&(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - return from_bits(lhs.bits_ & rhs.bits_); -} - -template -constexpr auto operator&(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(lhs.bits_ & static_cast(rhs)); -} - -template -constexpr auto operator&(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(static_cast(lhs) & rhs.bits_); -} - -constexpr auto operator|(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - return from_bits(lhs.bits_ | rhs.bits_); -} - -template -constexpr auto operator|(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(lhs.bits_ | static_cast(rhs)); -} - -template -constexpr auto operator|(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(static_cast(lhs) | rhs.bits_); -} - -constexpr auto operator^(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - return from_bits(lhs.bits_ ^ rhs.bits_); -} - -template -constexpr auto operator^(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(lhs.bits_ ^ static_cast(rhs)); -} - -template -constexpr auto operator^(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(static_cast(lhs) ^ rhs.bits_); -} - -constexpr auto operator<<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - return from_bits(lhs.bits_ << static_cast(rhs.bits_)); -} - -template -constexpr auto operator<<(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(lhs.bits_ << static_cast(rhs)); -} - -template -constexpr auto operator<<(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(static_cast(lhs) << static_cast(rhs.bits_)); -} - -constexpr auto operator>>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t -{ - return from_bits(lhs.bits_ >> static_cast(rhs.bits_)); -} - -template -constexpr auto operator>>(const decimal128_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(lhs.bits_ >> static_cast(rhs)); -} - -template -constexpr auto operator>>(const Integer lhs, const decimal128_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) -{ - return from_bits(static_cast(lhs) >> static_cast(rhs.bits_)); -} - -constexpr auto operator~(const decimal128_t lhs) noexcept -> decimal128_t -{ - return from_bits(~lhs.bits_); -} - -constexpr auto copysignd128(decimal128_t mag, const decimal128_t sgn) noexcept -> decimal128_t -{ - mag.edit_sign(sgn.isneg()); - return mag; -} - -constexpr auto scalblnd128(decimal128_t num, const long exp) noexcept -> decimal128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - constexpr decimal128_t zero {0, 0}; - - if (num == zero || exp == 0 || not_finite(num)) - { - return num; - } - #endif - - num.edit_exponent(num.biased_exponent() + exp); - - return num; -} - -constexpr auto scalbnd128(decimal128_t num, const int expval) noexcept -> decimal128_t -{ - return scalblnd128(num, static_cast(expval)); -} - -} //namespace decimal -} //namespace boost - -namespace std { - -template<> -#ifdef _MSC_VER -class numeric_limits -#else -struct numeric_limits -#endif -{ - -#ifdef _MSC_VER - public: -#endif - - static constexpr bool is_specialized = true; - static constexpr bool is_signed = true; - static constexpr bool is_integer = false; - static constexpr bool is_exact = false; - static constexpr bool has_infinity = true; - static constexpr bool has_quiet_NaN = true; - static constexpr bool has_signaling_NaN = true; - - // These members were deprecated in C++23 - #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) - static constexpr std::float_denorm_style has_denorm = std::denorm_present; - static constexpr bool has_denorm_loss = true; - #endif - - static constexpr std::float_round_style round_style = std::round_indeterminate; - static constexpr bool is_iec559 = true; - static constexpr bool is_bounded = true; - static constexpr bool is_modulo = false; - static constexpr int digits = 34; - static constexpr int digits10 = digits; - static constexpr int max_digits10 = digits; - static constexpr int radix = 10; - static constexpr int min_exponent = -6143; - static constexpr int min_exponent10 = min_exponent; - static constexpr int max_exponent = 6144; - static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; - static constexpr bool tinyness_before = true; - - // Member functions - static constexpr auto (min) () -> boost::decimal::decimal128_t { return {UINT32_C(1), min_exponent}; } - static constexpr auto (max) () -> boost::decimal::decimal128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, true}; } - static constexpr auto epsilon () -> boost::decimal::decimal128_t { return {UINT32_C(1), -digits + 1}; } - static constexpr auto round_error () -> boost::decimal::decimal128_t { return epsilon(); } - static constexpr auto infinity () -> boost::decimal::decimal128_t { return boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask); } - static constexpr auto quiet_NaN () -> boost::decimal::decimal128_t { return boost::decimal::from_bits(boost::decimal::detail::d128_nan_mask); } - static constexpr auto signaling_NaN() -> boost::decimal::decimal128_t { return boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask); } - static constexpr auto denorm_min () -> boost::decimal::decimal128_t { return {1, boost::decimal::detail::etiny_v}; } -}; - -} //namespace std - -#endif //BOOST_DECIMAL_decimal128_t_HPP diff --git a/include/boost/decimal/decimal128_fast.hpp b/include/boost/decimal/decimal128_fast.hpp deleted file mode 100644 index 0c5c0a3d8..000000000 --- a/include/boost/decimal/decimal128_fast.hpp +++ /dev/null @@ -1,1443 +0,0 @@ -// Copyright 2024 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_decimal_fast128_t_HPP -#define BOOST_DECIMAL_decimal_fast128_t_HPP - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef BOOST_DECIMAL_BUILD_MODULE - -#include -#include - -#endif - -namespace boost { -namespace decimal { - -namespace detail { - -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_inf = boost::int128::uint128_t {UINT64_MAX - 2, UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_qnan = boost::int128::uint128_t {UINT64_MAX - 1, UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_snan = boost::int128::uint128_t {UINT64_MAX, UINT64_MAX}; - -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_inf_high_bits = UINT64_MAX - 2; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_qnan_high_bits = UINT64_MAX - 1; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits = UINT64_MAX; - -} // namespace detail - -BOOST_DECIMAL_EXPORT class decimal_fast128_t final -{ -public: - using significand_type = int128::uint128_t; - using exponent_type = std::uint32_t; - using biased_exponent_type = std::int32_t; - -private: - // Instead of having to encode and decode at every operation - // we store the constituent pieces directly - - significand_type significand_ {}; - exponent_type exponent_ {}; - bool sign_ {}; - - constexpr auto isneg() const noexcept -> bool - { - return sign_; - } - - constexpr auto full_significand() const noexcept -> significand_type - { - return significand_; - } - - constexpr auto unbiased_exponent() const noexcept -> exponent_type - { - return exponent_; - } - - constexpr auto biased_exponent() const noexcept -> biased_exponent_type - { - return static_cast(exponent_) - detail::bias_v; - } - - constexpr auto to_components() const noexcept -> detail::decimal_fast128_t_components - { - return {full_significand(), biased_exponent(), isneg()}; - } - - template - friend constexpr auto to_integral_128(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); - - template - friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); - - template - friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; - - friend constexpr auto d128f_div_impl(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs, decimal_fast128_t& q, decimal_fast128_t& r) noexcept -> void; - - // Equality template between any integer type and decimal128_t - template - friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - // Template to compare operator< for any integer type and decimal128_t - template - friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - template - friend constexpr auto ilogb(T d) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); - - template - friend constexpr auto logb(T num) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); - - friend constexpr auto not_finite(const decimal_fast128_t& val) noexcept -> bool; - - template - friend constexpr auto to_dpd_d128(DecimalType val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, int128::uint128_t); - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_inequality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; - - template - friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -public: - constexpr decimal_fast128_t() noexcept = default; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal_fast128_t(T1 coeff, T2 exp, bool sign = false) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal_fast128_t(T1 coeff, T2 exp) noexcept; - - explicit constexpr decimal_fast128_t(bool value) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - constexpr decimal_fast128_t(Integer val) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(Float val) noexcept; - - friend constexpr auto direct_init_d128(significand_type significand, exponent_type exponent, bool sign) noexcept -> decimal_fast128_t; - - // Classification functions - friend constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool; - friend constexpr auto isinf(const decimal_fast128_t& val) noexcept -> bool; - friend constexpr auto isnan(const decimal_fast128_t& val) noexcept -> bool; - friend constexpr auto issignaling(const decimal_fast128_t& val) noexcept -> bool; - friend constexpr auto isnormal(const decimal_fast128_t& val) noexcept -> bool; - friend constexpr auto isfinite(const decimal_fast128_t& val) noexcept -> bool; - - // Comparison operators - friend constexpr auto operator==(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; - friend constexpr auto operator!=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; - friend constexpr auto operator<(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; - friend constexpr auto operator<=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; - friend constexpr auto operator>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; - friend constexpr auto operator>=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; - - // Mixed comparison operators - template - friend constexpr auto operator==(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator==(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - friend constexpr auto operator<=>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> std::partial_ordering; - - template - friend constexpr auto operator<=>(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - - template - friend constexpr auto operator<=>(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - #endif - - // Unary arithmetic operators - friend constexpr auto operator+(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; - friend constexpr auto operator-(decimal_fast128_t rhs) noexcept -> decimal_fast128_t; - - // Binary arithmetic operators - friend constexpr auto operator+(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; - friend constexpr auto operator-(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; - friend constexpr auto operator*(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; - friend constexpr auto operator/(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; - friend constexpr auto operator%(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; - - // Mixed type binary arithmetic operators - template - friend constexpr auto operator+(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - template - friend constexpr auto operator+(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - template - friend constexpr auto operator-(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - template - friend constexpr auto operator-(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - template - friend constexpr auto operator*(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - template - friend constexpr auto operator*(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - template - friend constexpr auto operator/(const decimal_fast128_t& lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - template - friend constexpr auto operator/(Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); - - // Compound Arithmetic Operators - constexpr auto operator+=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; - - template - constexpr auto operator+=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); - - constexpr auto operator-=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; - - template - constexpr auto operator-=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); - - constexpr auto operator*=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; - - template - constexpr auto operator*=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); - - constexpr auto operator/=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; - - template - constexpr auto operator/=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); - - // Conversions - explicit constexpr operator bool() const noexcept; - explicit constexpr operator int() const noexcept; - explicit constexpr operator unsigned() const noexcept; - explicit constexpr operator long() const noexcept; - explicit constexpr operator unsigned long() const noexcept; - explicit constexpr operator long long() const noexcept; - explicit constexpr operator unsigned long long() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_INT128 - explicit constexpr operator int128::int128_t() const noexcept; - explicit constexpr operator int128::uint128_t() const noexcept; - #endif - - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_FLOAT16 - explicit constexpr operator std::float16_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT32 - explicit constexpr operator std::float32_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT64 - explicit constexpr operator std::float64_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 - explicit constexpr operator std::bfloat16_t() const noexcept; - #endif - - template , bool> = true> - explicit constexpr operator Decimal() const noexcept; - - // functions that are better as friends - template - friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; - - friend constexpr auto copysignd128f(decimal_fast128_t mag, decimal_fast128_t sgn) noexcept -> decimal_fast128_t; - friend constexpr auto scalblnd128f(decimal_fast128_t num, long exp) noexcept -> decimal_fast128_t; - friend constexpr auto scalbnd128f(decimal_fast128_t num, int exp) noexcept -> decimal_fast128_t; - friend constexpr auto fmad128f(decimal_fast128_t x, decimal_fast128_t y, decimal128_t z) noexcept -> decimal128_t; - - // Decimal functions - // 3.6.4 Same Quantum - friend constexpr auto samequantumd128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; - - // 3.6.5 Quantum exponent - friend constexpr auto quantexpd128f(const decimal_fast128_t& x) noexcept -> int; - - // 3.6.6 Quantize - friend constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; -}; - -BOOST_DECIMAL_EXPORT using decimal128_fast [[deprecated("Use re-named type decimal_fast128_t instead of decimal128_fast")]] = decimal_fast128_t; - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, bool sign) noexcept -{ - using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; - - minimum_coefficient_size min_coeff {coeff}; - - sign_ = sign; - - // Normalize the significand in the constructor, so we don't have - // to calculate the number of digits for operations - detail::normalize(min_coeff, exp, sign); - - significand_ = static_cast(min_coeff); - - const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias_v}; - - if (biased_exp > detail::max_biased_exp_v) - { - significand_ = detail::d128_fast_inf; - } - else if (biased_exp >= 0) - { - exponent_ = static_cast(biased_exp); - } - else - { - // Flush denorms to zero - significand_ = static_cast(0); - exponent_ = static_cast(detail::bias_v); - sign_ = false; - } -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal_fast128_t::decimal_fast128_t(const T1 coeff, const T2 exp) noexcept : decimal_fast128_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} - -constexpr decimal_fast128_t::decimal_fast128_t(const bool value) noexcept : decimal_fast128_t(static_cast(value), 0, false) {} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal_fast128_t::decimal_fast128_t(const Integer val) noexcept : decimal_fast128_t{val, 0} {} - -#if defined(__clang__) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wfloat-equal" -#elif defined(__GNUC__) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wfloat-equal" -#endif - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::decimal_fast128_t(const Float val) noexcept -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val != val) - { - significand_ = detail::d128_fast_qnan; - } - else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) - { - significand_ = detail::d128_fast_inf; - } - else - #endif - { - const auto components {detail::ryu::floating_point_to_fd128(val)}; - *this = decimal_fast128_t {components.mantissa, components.exponent, components.sign}; - } -} - -#if defined(__clang__) -# pragma clang diagnostic pop -#elif defined(__GNUC__) -# pragma GCC diagnostic pop -#endif - -constexpr auto direct_init_d128(const decimal_fast128_t::significand_type significand, - const decimal_fast128_t::exponent_type exponent, - const bool sign) noexcept -> decimal_fast128_t -{ - decimal_fast128_t val {}; - val.significand_ = significand; - val.exponent_ = exponent; - val.sign_ = sign; - - return val; -} - -constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool -{ - return val.sign_; -} - -constexpr auto isinf(const decimal_fast128_t& val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_.high == detail::d128_fast_inf_high_bits; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto isnan(const decimal_fast128_t& val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_.high >= detail::d128_fast_qnan_high_bits; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto issignaling(const decimal_fast128_t& val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_.high == detail::d128_fast_snan_high_bits; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto isnormal(const decimal_fast128_t& val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val.exponent_ <= static_cast(detail::precision_v - 1)) - { - return false; - } - - return (val.significand_ != 0U) && isfinite(val); - #else - return val.significand_ != 0U; - #endif -} - -constexpr auto isfinite(const decimal_fast128_t& val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_.high < detail::d128_fast_inf_high_bits; - #else - static_cast(val); - return true; - #endif -} - -BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal_fast128_t& val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_.high >= detail::d128_fast_inf_high_bits; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto operator==(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool -{ - return fast_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(rhs, lhs); -} - -constexpr auto operator!=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool -{ - return fast_inequality_impl(lhs, rhs); -} - -template -constexpr auto operator!=(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -constexpr auto operator<(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool -{ - return fast_less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !less_impl(rhs, lhs) && lhs != rhs; -} - -constexpr auto operator<=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -constexpr auto operator>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -constexpr auto operator>=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const decimal_fast128_t& lhs, const Integer rhs) noexcept -BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const Integer lhs, const decimal_fast128_t& rhs) noexcept -BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator<=>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> std::partial_ordering -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -#endif - -constexpr auto operator+(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t -{ - return rhs; -} - -constexpr auto operator-(decimal_fast128_t rhs) noexcept -> decimal_fast128_t -{ - rhs.sign_ = !rhs.sign_; - return rhs; -} - -constexpr auto operator+(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - return detail::d128_add_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), rhs.sign_, - (abs(lhs) > abs(rhs))); -}; - -template -constexpr auto operator+(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - using exp_type = decimal_fast128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d128_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator+(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - return rhs + lhs; -} - -constexpr auto operator-(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - return detail::d128_sub_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), rhs.sign_, - abs(lhs) > abs(rhs)); -} - -template -constexpr auto operator-(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - using exp_type = decimal_fast128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d128_sub_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator-(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - using exp_type = decimal_fast128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(rhs)) - { - return rhs; - } - #endif - - auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; - - exp_type exp_lhs {0}; - detail::normalize(sig_lhs, exp_lhs); - - return detail::d128_sub_impl( - sig_lhs, exp_lhs, (lhs < 0), - rhs.significand_, rhs.biased_exponent(), rhs.sign_, - abs_lhs_bigger); -} - -constexpr auto operator*(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - return detail::d128_mul_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), rhs.sign_); -} - -template -constexpr auto operator*(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - using exp_type = decimal_fast128_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; - exp_type rhs_exp {0}; - detail::normalize(rhs_sig, rhs_exp); - - return detail::d128_fast_mul_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs_sig, rhs_exp, (rhs < 0)); -} - -template -constexpr auto operator*(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - return rhs * lhs; -} - -constexpr auto d128f_div_impl(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs, decimal_fast128_t& q, decimal_fast128_t& r) noexcept -> void -{ - const bool sign {lhs.isneg() != rhs.isneg()}; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast128_t zero {0, 0}; - constexpr decimal_fast128_t nan {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false)}; - constexpr decimal_fast128_t inf {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false)}; - - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - // NAN has to come first - if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) - { - q = nan; - r = nan; - return; - } - - switch (lhs_fp) - { - case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; - return; - case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; - return; - default: - static_cast(lhs); - } - - switch (rhs_fp) - { - case FP_ZERO: - q = inf; - r = zero; - return; - case FP_INFINITE: - q = sign ? -zero : zero; - r = lhs; - return; - default: - static_cast(rhs); - } - #else - static_cast(r); - #endif - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "sig lhs: " << sig_lhs - << "\nexp lhs: " << exp_lhs - << "\nsig rhs: " << sig_rhs - << "\nexp rhs: " << exp_rhs << std::endl; - #endif - - constexpr auto ten_pow_precision {detail::pow10(int128::uint128_t(detail::precision_v))}; - const auto big_sig_lhs {detail::umul256(lhs.significand_, ten_pow_precision)}; - - const auto res_sig {big_sig_lhs / rhs.significand_}; - const auto res_exp {lhs.biased_exponent() - rhs.biased_exponent() - detail::precision_v}; - - q = decimal_fast128_t(static_cast(res_sig), res_exp, sign); -} - -constexpr auto d128f_mod_impl(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs, const decimal_fast128_t& q, decimal_fast128_t& r) -> void -{ - constexpr decimal_fast128_t zero {0, 0}; - - auto q_trunc {q > zero ? floor(q) : ceil(q)}; - r = lhs - (decimal_fast128_t(q_trunc) * rhs); -}; - -constexpr auto operator/(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t -{ - decimal_fast128_t q {}; - decimal_fast128_t r {}; - d128f_div_impl(lhs, rhs, q, r); - - return q; -}; - -template -constexpr auto operator/(const decimal_fast128_t& lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast128_t zero {0, 0}; - constexpr decimal_fast128_t nan {direct_init_d128(detail::d128_fast_qnan, 0, false)}; - constexpr decimal_fast128_t inf {direct_init_d128(detail::d128_fast_inf, 0, false)}; - - const bool sign {lhs.isneg() != (rhs < 0)}; - - const auto lhs_fp {fpclassify(lhs)}; - - switch (lhs_fp) - { - case FP_NAN: - return nan; - case FP_INFINITE: - return inf; - case FP_ZERO: - return sign ? -zero : zero; - default: - static_cast(lhs); - } - - if (rhs == 0) - { - return sign ? -inf : inf; - } - #endif - - const detail::decimal_fast128_t_components lhs_components {lhs.significand_, lhs.biased_exponent(), lhs.isneg()}; - - const auto rhs_sig {detail::make_positive_unsigned(rhs)}; - const detail::decimal_fast128_t_components rhs_components {rhs_sig, 0, rhs < 0}; - detail::decimal_fast128_t_components q_components {}; - - detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); - - return {q_components.sig, q_components.exp, q_components.sign}; -} - -template -constexpr auto operator/(const Integer lhs, const decimal_fast128_t& rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast128_t zero {0, 0}; - constexpr decimal_fast128_t nan {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false)}; - constexpr decimal_fast128_t inf {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false)}; - - const bool sign {(lhs < 0) != rhs.isneg()}; - - const auto rhs_fp {fpclassify(rhs)}; - - if (rhs_fp == FP_NAN) - { - return nan; - } - - switch (rhs_fp) - { - case FP_INFINITE: - return sign ? -zero : zero; - case FP_ZERO: - return sign ? -inf : inf; - default: - static_cast(lhs); - } - #endif - - const detail::decimal_fast128_t_components lhs_components {detail::make_positive_unsigned(lhs), 0, lhs < 0}; - const detail::decimal_fast128_t_components rhs_components {rhs.significand_, rhs.biased_exponent(), rhs.isneg()}; - detail::decimal_fast128_t_components q_components {}; - - detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); - - return {q_components.sig, q_components.exp, q_components.sign}; -} - -constexpr auto operator%(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t -{ - decimal_fast128_t q {}; - decimal_fast128_t r {}; - d128f_div_impl(lhs, rhs, q, r); - d128f_mod_impl(lhs, rhs, q, r); - - return r; -}; - -constexpr auto decimal_fast128_t::operator+=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal_fast128_t::operator+=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) -{ - *this = *this + rhs; - return *this; -} - -constexpr auto decimal_fast128_t::operator-=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal_fast128_t::operator-=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) -{ - *this = *this - rhs; - return *this; -} - -constexpr auto decimal_fast128_t::operator*=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal_fast128_t::operator*=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) -{ - *this = *this * rhs; - return *this; -} - -constexpr auto decimal_fast128_t::operator/=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal_fast128_t::operator/=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) -{ - *this = *this / rhs; - return *this; -} - -constexpr decimal_fast128_t::operator bool() const noexcept -{ - constexpr decimal_fast128_t zero {0, 0}; - return *this != zero; -} - -constexpr decimal_fast128_t::operator int() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal_fast128_t::operator unsigned() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal_fast128_t::operator long() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal_fast128_t::operator unsigned long() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal_fast128_t::operator long long() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal_fast128_t::operator unsigned long long() const noexcept -{ - return to_integral_128(*this); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 - -constexpr decimal_fast128_t::operator boost::int128::int128_t() const noexcept -{ - return to_integral_128(*this); -} - -constexpr decimal_fast128_t::operator boost::int128::uint128_t() const noexcept -{ - return to_integral_128(*this); -} - -#endif // BOOST_DECIMAL_HAS_INT128 - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator float() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator double() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator long double() const noexcept -{ - return to_float(*this); -} - -#ifdef BOOST_DECIMAL_HAS_FLOAT16 -constexpr decimal_fast128_t::operator std::float16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT32 -constexpr decimal_fast128_t::operator std::float32_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT64 -constexpr decimal_fast128_t::operator std::float64_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 -constexpr decimal_fast128_t::operator std::bfloat16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif - -template , bool>> -constexpr decimal_fast128_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -constexpr auto copysignd128f(decimal_fast128_t mag, const decimal_fast128_t sgn) noexcept -> decimal_fast128_t -{ - mag.sign_ = sgn.sign_; - return mag; -} - -constexpr auto scalblnd128f(decimal_fast128_t num, const long exp) noexcept -> decimal_fast128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - constexpr decimal_fast128_t zero {0, 0}; - - if (num == zero || exp == 0 || not_finite(num)) - { - return num; - } - #endif - - num = decimal_fast128_t(num.significand_, num.biased_exponent() + exp, num.sign_); - - return num; -} - -constexpr auto scalbnd128f(const decimal_fast128_t num, const int exp) noexcept -> decimal_fast128_t -{ - return scalblnd128f(num, static_cast(exp)); -} - -// 3.6.4 -// Effects: determines if the quantum exponents of x and y are the same. -// If both x and y are NaN, or infinity, they have the same quantum exponents; -// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. -// The samequantum functions raise no exception. -constexpr auto samequantumd128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) - { - return true; - } - if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) - { - return false; - } - #endif - - return lhs.unbiased_exponent() == rhs.unbiased_exponent(); -} - -// 3.6.5 -// Effects: if x is finite, returns its quantum exponent. -// Otherwise, a domain error occurs and INT_MIN is returned. -constexpr auto quantexpd128f(const decimal_fast128_t& x) noexcept -> int -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(x)) - { - return INT_MIN; - } - #endif - - return static_cast(x.unbiased_exponent()); -} - -// 3.6.6 -// Returns: a number that is equal in value (except for any rounding) and sign to x, -// and which has an exponent set to be equal to the exponent of y. -// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; -// if the result does not have the same value as x, the "inexact" floating-point exception is raised. -// If the exponent is being decreased and the significand of the result has more digits than the type would allow, -// the "invalid" floating-point exception is raised and the result is NaN. -// If one or both operands are NaN the result is NaN. -// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. -// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. -// The quantize functions do not signal underflow. -constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Return the correct type of nan - if (isnan(lhs)) - { - return lhs; - } - else if (isnan(rhs)) - { - return rhs; - } - - // If one is infinity then return a signaling NAN - if (isinf(lhs) != isinf(rhs)) - { - return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false); - } - else if (isinf(lhs) && isinf(rhs)) - { - return lhs; - } - #endif - - return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; -} - -} // namespace decimal -} // namespace boost - -namespace std { - -template<> -#ifdef _MSC_VER -class numeric_limits -#else -struct numeric_limits -#endif -{ - -#ifdef _MSC_VER - public: -#endif - - static constexpr bool is_specialized = true; - static constexpr bool is_signed = true; - static constexpr bool is_integer = false; - static constexpr bool is_exact = false; - static constexpr bool has_infinity = true; - static constexpr bool has_quiet_NaN = true; - static constexpr bool has_signaling_NaN = true; - - // These members were deprecated in C++23 - #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) - static constexpr std::float_denorm_style has_denorm = std::denorm_present; - static constexpr bool has_denorm_loss = true; - #endif - - static constexpr std::float_round_style round_style = std::round_indeterminate; - static constexpr bool is_iec559 = false; - static constexpr bool is_bounded = true; - static constexpr bool is_modulo = false; - static constexpr int digits = 34; - static constexpr int digits10 = digits; - static constexpr int max_digits10 = digits; - static constexpr int radix = 10; - static constexpr int min_exponent = -6143; - static constexpr int min_exponent10 = min_exponent; - static constexpr int max_exponent = 6144; - static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; - static constexpr bool tinyness_before = true; - - // Member functions - static constexpr auto (min) () -> boost::decimal::decimal_fast128_t { return {UINT32_C(1), min_exponent}; } - static constexpr auto (max) () -> boost::decimal::decimal_fast128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal_fast128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, true}; } - static constexpr auto epsilon () -> boost::decimal::decimal_fast128_t { return {UINT32_C(1), -digits + 1}; } - static constexpr auto round_error () -> boost::decimal::decimal_fast128_t { return epsilon(); } - static constexpr auto infinity () -> boost::decimal::decimal_fast128_t { return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false); } - static constexpr auto quiet_NaN () -> boost::decimal::decimal_fast128_t { return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false); } - static constexpr auto signaling_NaN() -> boost::decimal::decimal_fast128_t { return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_snan, 0, false); } - static constexpr auto denorm_min () -> boost::decimal::decimal_fast128_t { return min(); } -}; - -} // namspace std - -#endif //BOOST_DECIMAL_decimal_fast128_t_HPP diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index fca55e8e9..619876a53 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -1,10 +1,2143 @@ -// Copyright 2025 Matt Borland +// Copyright 2023 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#ifndef BOOST_DECIMAL_DECIMAL128_T_HPP -#define BOOST_DECIMAL_DECIMAL128_T_HPP +#ifndef BOOST_DECIMAL_decimal128_t_HPP +#define BOOST_DECIMAL_decimal128_t_HPP -#include +#include +#include +#include +#include +#include +#include "detail/int128.hpp" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "detail/int128.hpp" +#include +#include +#include -#endif // BOOST_DECIMAL_DECIMAL128_T_HPP +#ifndef BOOST_DECIMAL_BUILD_MODULE + +#include +#include +#include +#include +#include +#include +#include + +#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) +#include +#include +#include +#endif + +#endif //BOOST_DECIMAL_BUILD_MODULE + +namespace boost { +namespace decimal { + +namespace detail { + +// See IEEE 754 section 3.5.2 +BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_inf_mask {UINT64_C(0x7800000000000000), UINT64_C(0)}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_nan_mask {UINT64_C(0x7C00000000000000), UINT64_C(0)}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_snan_mask {UINT64_C(0x7E00000000000000), UINT64_C(0)}; + +// Comb. Exponent Significand +// s eeeeeeeeeeeeee (0TTT) 110-bits +// s 11 eeeeeeeeeeeeee (100T) 110-bits + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_sign_mask {UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000)}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_mask = UINT64_C(0b0'11111111111111'000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_high_word_shift {49U}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_mask {UINT64_C(0b0'00'11111111111111'0000000'0000000000'0000000000'0000000000'0000000000)}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_high_word_shift {47U}; + +BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_not_11_significand_mask {UINT64_C(0b0'00000000000000'111111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_11_significand_mask {UINT64_C(0b0'00'00000000000000'1111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; + +BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_biggest_no_combination_significand {d128_not_11_significand_mask}; + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_max_biased_exponent {UINT64_C(12287)}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_max_significand_value {UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}; + +template +constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +} //namespace detail + +BOOST_DECIMAL_EXPORT class decimal128_t final +{ +public: + using significand_type = boost::int128::uint128_t; + using exponent_type = std::uint64_t; + using biased_exponent_type = std::int32_t; + +private: + int128::uint128_t bits_ {}; + + #ifdef BOOST_DECIMAL_HAS_INT128 + + friend constexpr auto from_bits(detail::builtin_uint128_t rhs) noexcept -> decimal128_t; + friend constexpr auto to_bits(decimal128_t rhs) noexcept -> detail::builtin_uint128_t; + + #endif + + friend constexpr auto from_bits(int128::uint128_t rhs) noexcept -> decimal128_t; + + constexpr auto unbiased_exponent() const noexcept -> std::uint64_t; + constexpr auto biased_exponent() const noexcept -> std::int32_t; + constexpr auto full_significand() const noexcept -> int128::uint128_t; + constexpr auto isneg() const noexcept -> bool; + constexpr auto to_components() const noexcept -> detail::decimal128_t_components; + + // Allows direct editing of the exp + template , bool> = true> + constexpr auto edit_exponent(T exp) noexcept -> void; + constexpr auto edit_sign(bool sign) noexcept -> void; + + // Attempts conversion to integral type: + // If this is nan sets errno to EINVAL and returns 0 + // If this is not representable sets errno to ERANGE and returns 0 + template + friend constexpr auto to_integral_128(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); + + template + friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); + + template + friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; + + template + friend BOOST_DECIMAL_FORCE_INLINE constexpr auto equality_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; + + // Equality template between any integer type and decimal128_t + template + friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + // Template to compare operator< for any integer type and decimal128_t + template + friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + friend constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, decimal128_t& q, decimal128_t& r) noexcept -> void; + + friend constexpr auto d128_mod_impl(const decimal128_t& lhs, const decimal128_t& rhs, const decimal128_t& q, decimal128_t& r) noexcept -> void; + + template + friend constexpr auto ilogb(T d) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); + + template + friend constexpr auto logb(T num) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); + + friend constexpr auto not_finite(decimal128_t rhs) noexcept -> bool; + + friend constexpr auto to_bid_d128(decimal128_t val) noexcept -> int128::uint128_t; + + friend constexpr auto from_bid_d128(int128::uint128_t bits) noexcept -> decimal128_t; + + #ifdef BOOST_DECIMAL_HAS_INT128 + friend constexpr auto from_bid_d128(detail::builtin_uint128_t bits) noexcept -> decimal128_t; + #endif + + template + friend constexpr auto to_dpd_d128(DecimalType val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, int128::uint128_t); + + template + friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; + + template + friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +public: + // 3.2.4.1 construct/copy/destroy + constexpr decimal128_t() noexcept = default; + constexpr decimal128_t& operator=(const decimal128_t& rhs) noexcept = default; + constexpr decimal128_t& operator=(decimal128_t&& rhs) noexcept = default; + constexpr decimal128_t(const decimal128_t& rhs) noexcept = default; + constexpr decimal128_t(decimal128_t&& rhs) noexcept = default; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS + explicit + #endif + BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t(Float val) noexcept; + + template + BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal128_t&); + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + explicit constexpr decimal128_t(Decimal val) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + constexpr decimal128_t(Integer val) noexcept; + + template + constexpr auto operator=(const Integer& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); + + // 3.2.5 initialization from coefficient and exponent: + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal128_t(T1 coeff, T2 exp, bool sign = false) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal128_t(T1 coeff, T2 exp) noexcept; + + explicit constexpr decimal128_t(bool value) noexcept; + + // 3.2.4.4 Conversion to integral type + explicit constexpr operator bool() const noexcept; + explicit constexpr operator int() const noexcept; + explicit constexpr operator unsigned() const noexcept; + explicit constexpr operator long() const noexcept; + explicit constexpr operator unsigned long() const noexcept; + explicit constexpr operator long long() const noexcept; + explicit constexpr operator unsigned long long() const noexcept; + + explicit constexpr operator boost::int128::int128_t() const noexcept; + explicit constexpr operator boost::int128::uint128_t() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_INT128 + explicit constexpr operator detail::builtin_int128_t() const noexcept; + explicit constexpr operator detail::builtin_uint128_t() const noexcept; + #endif + + // 3.2.6 Conversion to floating-point type + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_FLOAT16 + explicit constexpr operator std::float16_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT32 + explicit constexpr operator std::float32_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT64 + explicit constexpr operator std::float64_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 + explicit constexpr operator std::bfloat16_t() const noexcept; + #endif + + template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> + constexpr operator Decimal() const noexcept; + + template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> + explicit constexpr operator Decimal() const noexcept; + + // cmath functions that are easier as friends + friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; + friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; + friend constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; + friend constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; + friend constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; + friend constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal128_t rhs) noexcept -> bool; + + // 3.2.7 unary arithmetic operators: + friend constexpr auto operator+(decimal128_t rhs) noexcept -> decimal128_t; + friend constexpr auto operator-(decimal128_t rhs) noexcept -> decimal128_t; + + // 3.2.8 Binary arithmetic operators + friend constexpr auto operator+(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator+(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator+(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator-(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator-(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator-(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator*(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator*(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator*(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator/(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator/(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator/(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator%(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + // 3.2.4.5 Increment and Decrement + constexpr auto operator++() noexcept -> decimal128_t&; + constexpr auto operator++(int) noexcept -> decimal128_t; // NOLINT : C++14 so constexpr implies const + constexpr auto operator--() noexcept -> decimal128_t&; + constexpr auto operator--(int) noexcept -> decimal128_t; // NOLINT : C++14 so constexpr implies const + + // 3.2.4.6 Compound Assignment + constexpr auto operator+=(decimal128_t rhs) noexcept -> decimal128_t&; + + template + constexpr auto operator+=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); + + template + constexpr auto operator+=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); + + constexpr auto operator-=(decimal128_t rhs) noexcept -> decimal128_t&; + + template + constexpr auto operator-=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); + + template + constexpr auto operator-=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); + + constexpr auto operator*=(decimal128_t rhs) noexcept -> decimal128_t&; + + template + constexpr auto operator*=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); + + template + constexpr auto operator*=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); + + constexpr auto operator/=(decimal128_t rhs) noexcept -> decimal128_t&; + + template + constexpr auto operator/=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&); + + template + constexpr auto operator/=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&); + + constexpr auto operator%=(decimal128_t rhs) noexcept -> decimal128_t&; + + // 3.2.9 Comparison operators: + // Equality + friend constexpr auto operator==(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; + + template + friend constexpr auto operator==(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator==(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Inequality + friend constexpr auto operator!=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; + + template + friend constexpr auto operator!=(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Less + friend constexpr auto operator<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; + + template + friend constexpr auto operator<(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Less equal + friend constexpr auto operator<=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; + + template + friend constexpr auto operator<=(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Greater + friend constexpr auto operator>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; + + template + friend constexpr auto operator>(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Greater equal + friend constexpr auto operator>=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; + + template + friend constexpr auto operator>=(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // C++20 spaceship + #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + friend constexpr auto operator<=>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> std::partial_ordering; + + template + friend constexpr auto operator<=>(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + + template + friend constexpr auto operator<=>(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + #endif + + #if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) + friend inline std::string bit_string(decimal128_t rhs) noexcept; + #endif + + // 3.6.4 Same Quantum + friend constexpr auto samequantumd128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; + + // 3.6.5 Quantum exponent + friend constexpr auto quantexpd128(decimal128_t x) noexcept -> int; + + // 3.6.6 Quantize + friend constexpr auto quantized128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + // Bit-wise operators + friend constexpr auto operator&(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator&(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator&(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator|(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator|(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator|(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator^(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator^(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator^(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator<<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator<<(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator<<(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator>>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t; + + template + friend constexpr auto operator>>(decimal128_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + template + friend constexpr auto operator>>(Integer lhs, decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t); + + friend constexpr auto operator~(decimal128_t rhs) noexcept -> decimal128_t; + + // functions that need to be friends + template + friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; + + friend constexpr auto copysignd128(decimal128_t mag, decimal128_t sgn) noexcept -> decimal128_t; + friend constexpr auto scalblnd128(decimal128_t num, long exp) noexcept -> decimal128_t; + friend constexpr auto scalbnd128(decimal128_t num, int exp) noexcept -> decimal128_t; + friend constexpr auto fmad128(decimal128_t x, decimal128_t y, decimal128_t z) noexcept -> decimal128_t; +}; + +BOOST_DECIMAL_EXPORT using decimal128 [[deprecated("Use re-named type decimal128_t instead of decimal128")]] = decimal128_t; + +#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) +inline std::string bit_string(decimal128_t rhs) noexcept +{ + std::stringstream ss; + ss << std::hex << rhs.bits_.high << rhs.bits_.low; + return ss.str(); +} +#endif + +#ifdef BOOST_DECIMAL_HAS_INT128 + +constexpr auto from_bits(const detail::builtin_uint128_t rhs) noexcept -> decimal128_t +{ + decimal128_t result; + result.bits_ = rhs; + + return result; +} + +constexpr auto to_bits(const decimal128_t rhs) noexcept -> detail::builtin_uint128_t +{ + return static_cast(rhs.bits_); +} + +#endif + +constexpr auto from_bits(const int128::uint128_t rhs) noexcept -> decimal128_t +{ + decimal128_t result; + result.bits_ = rhs; + + return result; +} + +constexpr auto decimal128_t::unbiased_exponent() const noexcept -> exponent_type +{ + exponent_type expval {}; + + if ((bits_.high & detail::d128_combination_field_mask) == detail::d128_combination_field_mask) + { + expval = (bits_.high & detail::d128_11_exp_mask) >> detail::d128_11_exp_high_word_shift; + } + else + { + expval = (bits_.high & detail::d128_not_11_exp_mask) >> detail::d128_not_11_exp_high_word_shift; + } + + return expval; +} + +constexpr auto decimal128_t::biased_exponent() const noexcept -> biased_exponent_type +{ + return static_cast(unbiased_exponent()) - detail::bias_v; +} + +constexpr auto decimal128_t::full_significand() const noexcept -> significand_type +{ + significand_type significand {}; + + if ((bits_.high & detail::d128_combination_field_mask) == detail::d128_combination_field_mask) + { + constexpr int128::uint128_t implied_bit {UINT64_C(0b10000000000000000000000000000000000000000000000000),0}; + significand = implied_bit | (bits_ & detail::d128_11_significand_mask); + } + else + { + significand = bits_ & detail::d128_not_11_significand_mask; + } + + return significand; +} + +constexpr auto decimal128_t::isneg() const noexcept -> bool +{ + return static_cast(bits_.high & detail::d128_sign_mask); +} + +constexpr auto decimal128_t::to_components() const noexcept -> detail::decimal128_t_components +{ + significand_type significand {}; + exponent_type expval {}; + + if ((bits_.high & detail::d128_combination_field_mask) == detail::d128_combination_field_mask) + { + constexpr int128::uint128_t implied_bit {UINT64_C(0b10000000000000000000000000000000000000000000000000),0}; + significand = implied_bit | (bits_ & detail::d128_11_significand_mask); + expval = (bits_.high & detail::d128_11_exp_mask) >> detail::d128_11_exp_high_word_shift; + } + else + { + significand = bits_ & detail::d128_not_11_significand_mask; + expval = (bits_.high & detail::d128_not_11_exp_mask) >> detail::d128_not_11_exp_high_word_shift; + } + + const auto sign {static_cast(bits_.high & detail::d128_sign_mask)}; + + return detail::decimal128_t_components {significand, static_cast(expval) - detail::bias_v, sign}; +} + + +template , bool>> +constexpr auto decimal128_t::edit_exponent(const T expval) noexcept -> void +{ + *this = decimal128_t(this->full_significand(), expval, this->isneg()); +} + +constexpr auto decimal128_t::edit_sign(const bool sign) noexcept -> void +{ + if (sign) + { + bits_.high |= detail::d128_sign_mask; + } + else + { + constexpr auto not_sign_mask {~detail::d128_sign_mask}; + bits_.high &= not_sign_mask; + } +} + +#if defined(__GNUC__) && __GNUC__ >= 6 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wduplicated-branches" +# pragma GCC diagnostic ignored "-Wconversion" +#endif + + +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4127) +#endif + +// e.g. for sign bits_.high |= detail::d128_sign_mask +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept +{ + bits_.high = sign ? detail::d128_sign_mask : UINT64_C(0); + + // If the coeff is not in range make it so + // The coefficient needs at least 110 bits so there's a good chance we don't need to + // We use sizeof instead of std::numeric_limits since __int128 on GCC prior to 14 without GNU mode does not overload + // numeric_limits + int coeff_digits {-1}; + BOOST_DECIMAL_IF_CONSTEXPR (sizeof(T1) >= sizeof(significand_type)) + { + if (coeff > detail::d128_max_significand_value) + { + constexpr auto precision_plus_one {detail::precision_v + 1}; + coeff_digits = detail::d128_constructor_num_digits(coeff); + if (coeff_digits > precision_plus_one) + { + const auto digits_to_remove {coeff_digits - precision_plus_one}; + + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic push + # pragma GCC diagnostic ignored "-Wconversion" + #endif + + coeff /= detail::pow10(static_cast(digits_to_remove)); + + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic pop + #endif + + coeff_digits -= digits_to_remove; + exp += detail::fenv_round(coeff, sign) + digits_to_remove; + } + // Round as required + else + { + exp += detail::fenv_round(coeff, sign); + } + } + } + + constexpr int128::uint128_t zero {0, 0}; + auto reduced_coeff {static_cast(coeff)}; + + if (reduced_coeff == zero) + { + return; + } + + // The decimal128_t case is more straightforward than the others + // The precision of the type is 34, and 34x 9s fits into 113 bits, + // therefore we never need to use the combination field for additional space + + bits_ |= (reduced_coeff & detail::d128_not_11_significand_mask); + + // If the exponent fits we do not need to use the combination field + const auto biased_exp {static_cast(exp + detail::bias_v)}; + if (biased_exp <= detail::d128_max_biased_exponent) + { + bits_.high |= (biased_exp << detail::d128_not_11_exp_high_word_shift) & detail::d128_not_11_exp_mask; + } + else + { + // If we can fit the extra exponent in the significand, then we can construct the value + // If we can't, the value is either 0 or infinity depending on the sign of exp + + if (coeff_digits == -1) + { + coeff_digits = detail::num_digits(reduced_coeff); + } + + const auto exp_delta {biased_exp - detail::d128_max_biased_exponent}; + const auto digit_delta {coeff_digits - static_cast(exp_delta)}; + if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) + { + exp -= digit_delta; + reduced_coeff *= detail::pow10(static_cast(digit_delta)); + *this = decimal128_t(reduced_coeff, exp, sign); + } + else + { + bits_ = exp < 0 ? zero : detail::d128_inf_mask; + } + } +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal128_t::decimal128_t(const T1 coeff, const T2 exp) noexcept : decimal128_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} + +constexpr decimal128_t::decimal128_t(const bool value) noexcept : decimal128_t(static_cast(value), 0, false) {} + + +#ifdef _MSC_VER +# pragma warning(pop) +#endif + +#if defined(__GNUC__) && __GNUC__ >= 6 +# pragma GCC diagnostic pop +#endif + +#if defined(__clang__) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wfloat-equal" +#elif defined(__GNUC__) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wfloat-equal" +#endif + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::decimal128_t(const Float val) noexcept +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val != val) + { + *this = from_bits(detail::d128_nan_mask); + } + else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) + { + *this = from_bits(detail::d128_inf_mask); + } + else + #endif + { + const auto components {detail::ryu::floating_point_to_fd128(val)}; + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "Mant: " << components.mantissa + << "\nExp: " << components.exponent + << "\nSign: " << components.sign << std::endl; + #endif + + if (components.exponent > detail::emax_v) + { + *this = from_bits(detail::d128_inf_mask); + } + else + { + *this = decimal128_t {components.mantissa, components.exponent, components.sign}; + } + } +} + +#if defined(__clang__) +# pragma clang diagnostic pop +#elif defined(__GNUC__) +# pragma GCC diagnostic pop +#endif + +template +BOOST_DECIMAL_CXX20_CONSTEXPR auto decimal128_t::operator=(const Float& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal128_t&) +{ + *this = decimal128_t{val}; + return *this; +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal128_t::decimal128_t(const Integer val) noexcept : decimal128_t{val, 0} {} + +template +constexpr auto decimal128_t::operator=(const Integer& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) +{ + using ConversionType = std::conditional_t::value, std::int32_t, Integer>; + *this = decimal128_t{static_cast(val), 0}; + return *this; +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal128_t::decimal128_t(const Decimal val) noexcept +{ + *this = to_decimal(val); +} + +constexpr decimal128_t::operator bool() const noexcept +{ + constexpr decimal128_t zero {0, 0}; + return *this != zero; +} + +constexpr decimal128_t::operator int() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator unsigned() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator long() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator unsigned long() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator long long() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator unsigned long long() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator boost::int128::int128_t() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator boost::int128::uint128_t() const noexcept +{ + return to_integral_128(*this); +} + +#ifdef BOOST_DECIMAL_HAS_INT128 + +constexpr decimal128_t::operator detail::builtin_int128_t() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal128_t::operator detail::builtin_uint128_t() const noexcept +{ + return to_integral_128(*this); +} + +#endif //BOOST_DECIMAL_HAS_INT128 + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator float() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator double() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator long double() const noexcept +{ + return to_float(*this); +} + +#ifdef BOOST_DECIMAL_HAS_FLOAT16 +constexpr decimal128_t::operator std::float16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT32 +constexpr decimal128_t::operator std::float32_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT64 +constexpr decimal128_t::operator std::float64_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 +constexpr decimal128_t::operator std::bfloat16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif + +template && (detail::decimal_val_v > detail::decimal_val_v), bool>> +constexpr decimal128_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> +constexpr decimal128_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool +{ + return rhs.bits_.high & detail::d128_sign_mask; +} + +constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_.high & detail::d128_nan_mask.high) == detail::d128_nan_mask.high; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_.high & detail::d128_nan_mask.high) == detail::d128_inf_mask.high; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_.high & detail::d128_snan_mask.high) == detail::d128_snan_mask.high; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check for de-normals + const auto sig {rhs.full_significand()}; + const auto exp {rhs.unbiased_exponent()}; + + if (exp <= detail::precision_v - 1) + { + return false; + } + + return (sig != 0U) && isfinite(rhs); + #else + return rhs.full_significand() != 0U; + #endif +} + +constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal128_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_.high & detail::d128_inf_mask.high) != detail::d128_inf_mask.high; + #else + static_cast(rhs); + return true; + #endif +} + +BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal128_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_.high & detail::d128_inf_mask.high) == detail::d128_inf_mask.high; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto operator+(const decimal128_t rhs) noexcept -> decimal128_t +{ + return rhs; +} + +constexpr auto operator-(decimal128_t rhs) noexcept-> decimal128_t +{ + rhs.bits_.high ^= detail::d128_sign_mask; + return rhs; +} + + +constexpr auto operator==(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool +{ + return equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(rhs, lhs); +} + +constexpr auto operator!=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +constexpr auto operator<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + if (isnan(lhs) || isnan(rhs) || + (!lhs.isneg() && rhs.isneg())) + { + return false; + } + if (lhs.isneg() && !rhs.isneg()) + { + return true; + } + if (isfinite(lhs) && isinf(rhs)) + { + return !rhs.isneg(); + } + } + #endif + + return less_parts_impl(lhs.full_significand(), lhs.biased_exponent(), lhs.isneg(), + rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()); +} + +template +constexpr auto operator<(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !less_impl(rhs, lhs) && lhs != rhs; +} + +constexpr auto operator<=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +constexpr auto operator>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +constexpr auto operator>=(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator<=>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> std::partial_ordering +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +#endif + +#ifdef BOOST_DECIMAL_DEBUG_ADD_128 +static char* mini_to_chars( char (&buffer)[ 64 ], boost::decimal::detail::builtin_uint128_t v ) +{ + char* p = buffer + 64; + *--p = '\0'; + + do + { + *--p = "0123456789"[ v % 10 ]; + v /= 10; + } + while ( v != 0 ); + + return p; +} + +#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) +std::ostream& operator<<( std::ostream& os, boost::decimal::detail::builtin_uint128_t v ) +{ + char buffer[ 64 ]; + + os << mini_to_chars( buffer, v ); + return os; +} +#endif +#endif + +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable: 4127) // If constexpr macro only works for C++17 and above +#endif + +constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, decimal128_t& q, decimal128_t& r) noexcept -> void +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal128_t zero {0, 0}; + constexpr decimal128_t nan {boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask)}; + constexpr decimal128_t inf {boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask)}; + + const bool sign {lhs.isneg() != rhs.isneg()}; + + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) + { + q = nan; + r = nan; + return; + } + + switch (lhs_fp) + { + case FP_INFINITE: + q = sign ? -inf : inf; + r = zero; + return; + case FP_ZERO: + q = sign ? -zero : zero; + r = sign ? -zero : zero; + return; + default: + static_cast(lhs); + } + + switch (rhs_fp) + { + case FP_ZERO: + q = inf; + r = zero; + return; + case FP_INFINITE: + q = sign ? -zero : zero; + r = lhs; + return; + default: + static_cast(rhs); + } + #else + static_cast(r); + #endif + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + auto sig_rhs {rhs.full_significand()}; + auto exp_rhs {rhs.biased_exponent()}; + detail::normalize(sig_rhs, exp_rhs); + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "sig lhs: " << sig_lhs + << "\nexp lhs: " << exp_lhs + << "\nsig rhs: " << sig_rhs + << "\nexp rhs: " << exp_rhs << std::endl; + #endif + + detail::decimal128_t_components lhs_components {sig_lhs, exp_lhs, lhs.isneg()}; + detail::decimal128_t_components rhs_components {sig_rhs, exp_rhs, rhs.isneg()}; + detail::decimal128_t_components q_components {}; + + detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); + + q = decimal128_t(q_components.sig, q_components.exp, q_components.sign); +} + +#ifdef _MSC_VER +# pragma warning(pop) +#endif + +constexpr auto d128_mod_impl(const decimal128_t& lhs, const decimal128_t& rhs, const decimal128_t& q, decimal128_t& r) noexcept -> void +{ + constexpr decimal128_t zero {0, 0}; + + auto q_trunc {q > zero ? floor(q) : ceil(q)}; + r = lhs - (decimal128_t(q_trunc) * rhs); +} + +constexpr auto operator+(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + auto lhs_sig {lhs.full_significand()}; + auto lhs_exp {lhs.biased_exponent()}; + detail::normalize(lhs_sig, lhs_exp); + + auto rhs_sig {rhs.full_significand()}; + auto rhs_exp {rhs.biased_exponent()}; + detail::normalize(rhs_sig, rhs_exp); + + return detail::d128_add_impl(lhs_sig, lhs_exp, lhs.isneg(), + rhs_sig, rhs_exp, rhs.isneg(), + abs(lhs) > abs(rhs)); +} + +template +constexpr auto operator+(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + using exp_type = decimal128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + bool abs_lhs_bigger {abs(lhs) > sig_rhs}; + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d128_add_impl(sig_lhs, exp_lhs, lhs.isneg(), + sig_rhs, exp_rhs, (rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator+(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return rhs + lhs; +} + +// NOLINTNEXTLINE: If subtraction is actually addition than use operator+ and vice versa +constexpr auto operator-(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + auto sig_rhs {rhs.full_significand()}; + auto exp_rhs {rhs.biased_exponent()}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d128_sub_impl( + sig_lhs, exp_lhs, lhs.isneg(), + sig_rhs, exp_rhs, rhs.isneg(), + abs(lhs) > abs(rhs)); +} + +template +constexpr auto operator-(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + using exp_type = decimal128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d128_sub_impl( + sig_lhs, exp_lhs, lhs.isneg(), + sig_rhs, exp_rhs, (rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator-(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + using exp_type = decimal128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(rhs)) + { + return rhs; + } + #endif + + auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; + const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; + + exp_type exp_lhs {0}; + detail::normalize(sig_lhs, exp_lhs); + + auto sig_rhs {rhs.full_significand()}; + auto exp_rhs {rhs.biased_exponent()}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d128_sub_impl( + sig_lhs, exp_lhs, (lhs < 0), + sig_rhs, exp_rhs, rhs.isneg(), + abs_lhs_bigger); +} + +constexpr auto operator*(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + const auto lhs_sig {lhs.full_significand()}; + const auto lhs_exp {lhs.biased_exponent()}; + + const auto rhs_sig {rhs.full_significand()}; + const auto rhs_exp {rhs.biased_exponent()}; + + return detail::d128_mul_impl( + lhs_sig, lhs_exp, lhs.isneg(), + rhs_sig, rhs_exp, rhs.isneg()); +} + +template +constexpr auto operator*(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + using exp_type = decimal128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto lhs_sig {lhs.full_significand()}; + auto lhs_exp {lhs.biased_exponent()}; + const auto lhs_zeros {detail::remove_trailing_zeros(lhs_sig)}; + lhs_sig = lhs_zeros.trimmed_number; + lhs_exp += static_cast(lhs_zeros.number_of_removed_zeros); + + auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; + const auto rhs_zeros {detail::remove_trailing_zeros(rhs_sig)}; + rhs_sig = rhs_zeros.trimmed_number; + const auto rhs_exp = static_cast(rhs_zeros.number_of_removed_zeros); + + return detail::d128_mul_impl( + lhs_sig, lhs_exp, lhs.isneg(), + rhs_sig, rhs_exp, (rhs < 0)); + +} + +template +constexpr auto operator*(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return rhs * lhs; +} + +constexpr auto operator/(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + decimal128_t q {}; + decimal128_t r {}; + d128_div_impl(lhs, rhs, q, r); + + return q; +} + +template +constexpr auto operator/(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal128_t zero {0, 0}; + constexpr decimal128_t nan {boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask)}; + constexpr decimal128_t inf {boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask)}; + + const bool sign {lhs.isneg() != (rhs < 0)}; + + const auto lhs_fp {fpclassify(lhs)}; + + switch (lhs_fp) + { + case FP_NAN: + return nan; + case FP_INFINITE: + return inf; + case FP_ZERO: + return sign ? -zero : zero; + default: + static_cast(lhs); + } + + if (rhs == 0) + { + return sign ? -inf : inf; + } + #endif + + auto lhs_sig {lhs.full_significand()}; + auto lhs_exp {lhs.biased_exponent()}; + detail::normalize(lhs_sig, lhs_exp); + + const detail::decimal128_t_components lhs_components {lhs_sig, lhs_exp, lhs.isneg()}; + + const detail::decimal128_t_components rhs_components {detail::make_positive_unsigned(rhs), 0, rhs < 0}; + detail::decimal128_t_components q_components {}; + + detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); + + return decimal128_t(q_components.sig, q_components.exp, q_components.sign); +} + +template +constexpr auto operator/(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal128_t zero {0, 0}; + constexpr decimal128_t inf {boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask)}; + constexpr decimal128_t nan {boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask)}; + + const bool sign {(lhs < 0) != rhs.isneg()}; + + const auto rhs_fp {fpclassify(rhs)}; + + if (rhs_fp == FP_NAN) + { + return nan; + } + + switch (rhs_fp) + { + case FP_INFINITE: + return sign ? -zero : zero; + case FP_ZERO: + return sign ? -inf : inf; + default: + static_cast(lhs); + } + #endif + + auto rhs_sig {rhs.full_significand()}; + auto rhs_exp {rhs.biased_exponent()}; + detail::normalize(rhs_sig, rhs_exp); + + const detail::decimal128_t_components lhs_components {detail::make_positive_unsigned(lhs), 0, lhs < 0}; + const detail::decimal128_t_components rhs_components {rhs_sig, rhs_exp, rhs.isneg()}; + detail::decimal128_t_components q_components {}; + + detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); + + return decimal128_t(q_components.sig, q_components.exp, q_components.sign); +} + +constexpr auto operator%(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + decimal128_t q {}; + decimal128_t r {}; + d128_div_impl(lhs, rhs, q, r); + d128_mod_impl(lhs, rhs, q, r); + + return r; +} + +constexpr auto decimal128_t::operator++() noexcept -> decimal128_t& +{ + constexpr decimal128_t one{1, 0}; + *this = *this + one; + return *this; +} + +constexpr auto decimal128_t::operator++(int) noexcept -> decimal128_t +{ + return ++(*this); +} + +constexpr auto decimal128_t::operator--() noexcept -> decimal128_t& +{ + constexpr decimal128_t one{1, 0}; + *this = *this - one; + return *this; +} + +constexpr auto decimal128_t::operator--(int) noexcept -> decimal128_t +{ + return --(*this); +} + +constexpr auto decimal128_t::operator+=(const decimal128_t rhs) noexcept -> decimal128_t& +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator+=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator+=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) +{ + *this = *this + rhs; + return *this; +} + +constexpr auto decimal128_t::operator-=(const decimal128_t rhs) noexcept -> decimal128_t& +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator-=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator-=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) +{ + *this = *this - rhs; + return *this; +} + +constexpr auto decimal128_t::operator*=(const decimal128_t rhs) noexcept -> decimal128_t& +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator*=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator*=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) +{ + *this = *this * rhs; + return *this; +} + +constexpr auto decimal128_t::operator/=(const decimal128_t rhs) noexcept -> decimal128_t& +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator/=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t&) +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal128_t::operator/=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal128_t&) +{ + *this = *this / rhs; + return *this; +} + +constexpr auto decimal128_t::operator%=(const decimal128_t rhs) noexcept -> decimal128_t& +{ + *this = *this % rhs; + return *this; +} + +// 3.6.4 +// Effects: determines if the quantum exponents of x and y are the same. +// If both x and y are NaN, or infinity, they have the same quantum exponents; +// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. +// The samequantum functions raise no exception. +constexpr auto samequantumd128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) + { + return true; + } + if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) + { + return false; + } + #endif + + return lhs.unbiased_exponent() == rhs.unbiased_exponent(); +} + +// 3.6.5 +// Effects: if x is finite, returns its quantum exponent. +// Otherwise, a domain error occurs and INT_MIN is returned. +constexpr auto quantexpd128(const decimal128_t x) noexcept -> int +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(x)) + { + return INT_MIN; + } + #endif + + return static_cast(x.unbiased_exponent()); +} + +// 3.6.6 +// Returns: a number that is equal in value (except for any rounding) and sign to x, +// and which has an exponent set to be equal to the exponent of y. +// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; +// if the result does not have the same value as x, the "inexact" floating-point exception is raised. +// If the exponent is being decreased and the significand of the result has more digits than the type would allow, +// the "invalid" floating-point exception is raised and the result is NaN. +// If one or both operands are NaN the result is NaN. +// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. +// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. +// The quantize functions do not signal underflow. +constexpr auto quantized128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Return the correct type of nan + if (isnan(lhs)) + { + return lhs; + } + else if (isnan(rhs)) + { + return rhs; + } + + // If one is infinity then return a signaling NAN + if (isinf(lhs) != isinf(rhs)) + { + return boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask); + } + else if (isinf(lhs) && isinf(rhs)) + { + return lhs; + } + #endif + + return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; +} + +constexpr auto operator&(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + return from_bits(lhs.bits_ & rhs.bits_); +} + +template +constexpr auto operator&(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(lhs.bits_ & static_cast(rhs)); +} + +template +constexpr auto operator&(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(static_cast(lhs) & rhs.bits_); +} + +constexpr auto operator|(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + return from_bits(lhs.bits_ | rhs.bits_); +} + +template +constexpr auto operator|(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(lhs.bits_ | static_cast(rhs)); +} + +template +constexpr auto operator|(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(static_cast(lhs) | rhs.bits_); +} + +constexpr auto operator^(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + return from_bits(lhs.bits_ ^ rhs.bits_); +} + +template +constexpr auto operator^(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(lhs.bits_ ^ static_cast(rhs)); +} + +template +constexpr auto operator^(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(static_cast(lhs) ^ rhs.bits_); +} + +constexpr auto operator<<(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + return from_bits(lhs.bits_ << static_cast(rhs.bits_)); +} + +template +constexpr auto operator<<(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(lhs.bits_ << static_cast(rhs)); +} + +template +constexpr auto operator<<(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(static_cast(lhs) << static_cast(rhs.bits_)); +} + +constexpr auto operator>>(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> decimal128_t +{ + return from_bits(lhs.bits_ >> static_cast(rhs.bits_)); +} + +template +constexpr auto operator>>(const decimal128_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(lhs.bits_ >> static_cast(rhs)); +} + +template +constexpr auto operator>>(const Integer lhs, const decimal128_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal128_t) +{ + return from_bits(static_cast(lhs) >> static_cast(rhs.bits_)); +} + +constexpr auto operator~(const decimal128_t lhs) noexcept -> decimal128_t +{ + return from_bits(~lhs.bits_); +} + +constexpr auto copysignd128(decimal128_t mag, const decimal128_t sgn) noexcept -> decimal128_t +{ + mag.edit_sign(sgn.isneg()); + return mag; +} + +constexpr auto scalblnd128(decimal128_t num, const long exp) noexcept -> decimal128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + constexpr decimal128_t zero {0, 0}; + + if (num == zero || exp == 0 || not_finite(num)) + { + return num; + } + #endif + + num.edit_exponent(num.biased_exponent() + exp); + + return num; +} + +constexpr auto scalbnd128(decimal128_t num, const int expval) noexcept -> decimal128_t +{ + return scalblnd128(num, static_cast(expval)); +} + +} //namespace decimal +} //namespace boost + +namespace std { + +template<> +#ifdef _MSC_VER +class numeric_limits +#else +struct numeric_limits +#endif +{ + +#ifdef _MSC_VER + public: +#endif + + static constexpr bool is_specialized = true; + static constexpr bool is_signed = true; + static constexpr bool is_integer = false; + static constexpr bool is_exact = false; + static constexpr bool has_infinity = true; + static constexpr bool has_quiet_NaN = true; + static constexpr bool has_signaling_NaN = true; + + // These members were deprecated in C++23 + #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) + static constexpr std::float_denorm_style has_denorm = std::denorm_present; + static constexpr bool has_denorm_loss = true; + #endif + + static constexpr std::float_round_style round_style = std::round_indeterminate; + static constexpr bool is_iec559 = true; + static constexpr bool is_bounded = true; + static constexpr bool is_modulo = false; + static constexpr int digits = 34; + static constexpr int digits10 = digits; + static constexpr int max_digits10 = digits; + static constexpr int radix = 10; + static constexpr int min_exponent = -6143; + static constexpr int min_exponent10 = min_exponent; + static constexpr int max_exponent = 6144; + static constexpr int max_exponent10 = max_exponent; + static constexpr bool traps = numeric_limits::traps; + static constexpr bool tinyness_before = true; + + // Member functions + static constexpr auto (min) () -> boost::decimal::decimal128_t { return {UINT32_C(1), min_exponent}; } + static constexpr auto (max) () -> boost::decimal::decimal128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1}; } + static constexpr auto lowest () -> boost::decimal::decimal128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, true}; } + static constexpr auto epsilon () -> boost::decimal::decimal128_t { return {UINT32_C(1), -digits + 1}; } + static constexpr auto round_error () -> boost::decimal::decimal128_t { return epsilon(); } + static constexpr auto infinity () -> boost::decimal::decimal128_t { return boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask); } + static constexpr auto quiet_NaN () -> boost::decimal::decimal128_t { return boost::decimal::from_bits(boost::decimal::detail::d128_nan_mask); } + static constexpr auto signaling_NaN() -> boost::decimal::decimal128_t { return boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask); } + static constexpr auto denorm_min () -> boost::decimal::decimal128_t { return {1, boost::decimal::detail::etiny_v}; } +}; + +} //namespace std + +#endif //BOOST_DECIMAL_decimal128_t_HPP diff --git a/include/boost/decimal/decimal32.hpp b/include/boost/decimal/decimal32.hpp deleted file mode 100644 index 896011f1f..000000000 --- a/include/boost/decimal/decimal32.hpp +++ /dev/null @@ -1,2169 +0,0 @@ -// Copyright 2023 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_decimal32_t_HPP -#define BOOST_DECIMAL_decimal32_t_HPP - -#include -#include -#include -#include -#include -#include "detail/int128.hpp" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef BOOST_DECIMAL_BUILD_MODULE - -#include -#include -#include -#include -#include -#include -#include - -#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) -#include -#include -#endif - -#endif // BOOST_DECIMAL_BUILD_MODULE - -namespace boost { -namespace decimal { - -namespace detail { - -// See IEEE 754 section 3.5.2 -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_inf_mask = UINT32_C(0x78000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_nan_mask = UINT32_C(0x7C000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_snan_mask = UINT32_C(0x7E000000); - -// Comb. Exponent Significand -// s eeeeeeee ttttttttttttttttttttttt - sign + 2 steering bits concatenate to 6 bits of exponent (8 total) + 23 bits of significand like float -// s 11 eeeeeeee [100] + ttttttttttttttttttttt - sign + 2 steering bits + 8 bits of exponent + 21 bits of significand (0b100 + 21 bits) -// -// Only is the type different in steering 11 which yields significand 100 + 21 bits giving us our 24 total bits of precision - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_sign_mask = UINT32_C(0b10000000000000000000000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_combination_field_mask = UINT32_C(0b01100000000000000000000000000000); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_comb_11_mask = UINT32_C(0b0'11000'000000'0000000000'0000000000); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_mask = UINT32_C(0b01111111100000000000000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_shift = UINT32_C(23); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_mask = UINT32_C(0b00011111111000000000000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_shift = UINT32_C(21); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_significand_mask = UINT32_C(0b00000000011111111111111111111111); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_significand_mask = UINT32_C(0b00000000000111111111111111111111); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_biggest_no_combination_significand = UINT32_C(0b11111111111111111111111); // 23 bits - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_max_biased_exponent = UINT32_C(191); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_max_significand_value = UINT32_C(9'999'999); - -template -constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - -template -constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - -template -constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -} // namespace detail - -#if defined(__GNUC__) && __GNUC__ >= 8 -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wclass-memaccess" -#endif - - -// ISO/IEC DTR 24733 -// 3.2.2 class decimal32_t -BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions) -{ -public: - using significand_type = std::uint32_t; - using exponent_type = std::uint32_t; - using biased_exponent_type = std::int32_t; - -private: - - std::uint32_t bits_ {}; - - // Returns the un-biased (quantum) exponent - constexpr auto unbiased_exponent() const noexcept -> exponent_type ; - - // Returns the biased exponent - constexpr auto biased_exponent() const noexcept -> biased_exponent_type; - - // Returns the significand complete with the bits implied from the combination field - constexpr auto full_significand() const noexcept -> significand_type ; - constexpr auto isneg() const noexcept -> bool; - - // Returns a complete struct so we don't have to decode the number multiple times if we need everything - constexpr auto to_components() const noexcept -> detail::decimal32_t_components; - - // Attempts conversion to integral type: - // If this is nan sets errno to EINVAL and returns 0 - // If this is not representable sets errno to ERANGE and returns 0 - template - friend constexpr auto to_integral(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); - - template - friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); - - template - friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; - - friend constexpr auto div_impl(decimal32_t lhs, decimal32_t rhs, decimal32_t& q, decimal32_t& r) noexcept -> void; - friend constexpr auto mod_impl(decimal32_t lhs, decimal32_t rhs, const decimal32_t& q, decimal32_t& r) noexcept -> void; - - template - friend constexpr auto ilogb(T d) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); - - template - friend constexpr auto logb(T num) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); - - // Debug bit pattern - friend constexpr auto from_bits(std::uint32_t bits) noexcept -> decimal32_t; - friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_bits(decimal32_t rhs) noexcept -> std::uint32_t; - friend inline auto debug_pattern(decimal32_t rhs) noexcept -> void; - - // Equality template between any integer type and decimal32_t - template - friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - // Template to compare operator< for any integer type and decimal32_t - template - friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - template - friend constexpr auto equality_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; - - template - friend constexpr auto sequential_less_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; - - friend constexpr auto to_bid_d32(decimal32_t val) noexcept -> std::uint32_t; - - friend constexpr auto from_bid_d32(std::uint32_t bits) noexcept -> decimal32_t; - - template - friend constexpr auto to_dpd_d32(DecimalType val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint32_t); - - template - friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; - - template - friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -public: - // 3.2.2.1 construct/copy/destroy: - constexpr decimal32_t() noexcept = default; - - // 3.2.2.2 Conversion from a floating-point type - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS - explicit - #endif - BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t(Float val) noexcept; - - template - BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal32_t&); - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - explicit constexpr decimal32_t(Decimal val) noexcept; - - // 3.2.2.3 Conversion from integral type - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - constexpr decimal32_t(Integer val) noexcept; - - template - constexpr auto operator=(const Integer& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); - - // 3.2.2.4 Conversion to integral type - explicit constexpr operator bool() const noexcept; - explicit constexpr operator int() const noexcept; - explicit constexpr operator unsigned() const noexcept; - explicit constexpr operator long() const noexcept; - explicit constexpr operator unsigned long() const noexcept; - explicit constexpr operator long long() const noexcept; - explicit constexpr operator unsigned long long() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_INT128 - explicit constexpr operator detail::builtin_int128_t() const noexcept; - explicit constexpr operator detail::builtin_uint128_t() const noexcept; - #endif - - // We allow implict promotions to and decimal type with greater or equal precision (e.g. decimal_fast32_t) - template , bool> = true> - constexpr operator Decimal() const noexcept; - - // 3.2.5 initialization from coefficient and exponent: - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal32_t(T1 coeff, T2 exp, bool sign = false) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal32_t(T1 coeff, T2 exp) noexcept; - - explicit constexpr decimal32_t(bool value) noexcept; - - constexpr decimal32_t(const decimal32_t& val) noexcept = default; - constexpr decimal32_t(decimal32_t&& val) noexcept = default; - constexpr auto operator=(const decimal32_t& val) noexcept -> decimal32_t& = default; - constexpr auto operator=(decimal32_t&& val) noexcept -> decimal32_t& = default; - - // 3.2.6 Conversion to floating-point type - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_FLOAT16 - explicit constexpr operator std::float16_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT32 - explicit constexpr operator std::float32_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT64 - explicit constexpr operator std::float64_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 - explicit constexpr operator std::bfloat16_t() const noexcept; - #endif - - // cmath functions that are easier as friends - friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; - friend constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; - friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; - friend constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; - friend constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; - friend constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; - - // 3.2.7 unary arithmetic operators: - friend constexpr auto operator+(decimal32_t rhs) noexcept -> decimal32_t; - friend constexpr auto operator-(decimal32_t rhs) noexcept -> decimal32_t; - - // 3.2.8 binary arithmetic operators: - friend constexpr auto operator+(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator+(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator+(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator-(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator-(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator-(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator*(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator*(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator*(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator/(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator/(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator/(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator%(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - // 3.2.2.5 Increment and Decrement - constexpr auto operator++() noexcept -> decimal32_t&; - constexpr auto operator++(int) noexcept -> decimal32_t; // NOLINT : C++14 so constexpr implies const - constexpr auto operator--() noexcept -> decimal32_t&; - constexpr auto operator--(int) noexcept -> decimal32_t; // NOLINT : C++14 so constexpr implies const - - // 3.2.2.6 Compound assignment - constexpr auto operator+=(decimal32_t rhs) noexcept -> decimal32_t&; - - template - constexpr auto operator+=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); - - template - constexpr auto operator+=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); - - constexpr auto operator-=(decimal32_t rhs) noexcept -> decimal32_t&; - - template - constexpr auto operator-=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); - - template - constexpr auto operator-=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); - - constexpr auto operator*=(decimal32_t rhs) noexcept -> decimal32_t&; - - template - constexpr auto operator*=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); - - template - constexpr auto operator*=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); - - constexpr auto operator/=(decimal32_t rhs) noexcept -> decimal32_t&; - - template - constexpr auto operator/=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); - - template - constexpr auto operator/=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); - - constexpr auto operator%=(decimal32_t rhs) noexcept -> decimal32_t&; - - // 3.2.9 comparison operators: - // Equality - friend constexpr auto operator==(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; - - template - friend constexpr auto operator==(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator==(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Inequality - friend constexpr auto operator!=(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; - - template - friend constexpr auto operator!=(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Less - friend constexpr auto operator<(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; - - template - friend constexpr auto operator<(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Less equal - friend constexpr auto operator<=(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; - - template - friend constexpr auto operator<=(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Greater - friend constexpr auto operator>(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; - - template - friend constexpr auto operator>(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Greater equal - friend constexpr auto operator>=(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; - - template - friend constexpr auto operator>=(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - friend constexpr auto operator<=>(decimal32_t lhs, decimal32_t rhs) noexcept -> std::partial_ordering; - - template - friend constexpr auto operator<=>(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - - template - friend constexpr auto operator<=>(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - #endif - - // Bitwise operators - friend constexpr auto operator&(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator&(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator&(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator|(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator|(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator|(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator^(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator^(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator^(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator<<(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator<<(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator<<(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator>>(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - template - friend constexpr auto operator>>(decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - template - friend constexpr auto operator>>(Integer lhs, decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); - - friend constexpr auto operator~(decimal32_t lhs) noexcept -> decimal32_t; - - // extensions - // 3.6.4 Same Quantum - friend constexpr auto samequantumd32(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; - - // 3.6.5 Quantum exponent - friend constexpr auto quantexpd32(decimal32_t x) noexcept -> int; - - // 3.6.6 Quantize - friend constexpr auto quantized32(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; - - // functions that need to be friends - friend constexpr auto copysignd32(decimal32_t mag, decimal32_t sgn) noexcept -> decimal32_t; - friend constexpr auto fmad32(decimal32_t x, decimal32_t y, decimal32_t z) noexcept -> decimal32_t; - - // Related to - template - friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; - - friend constexpr auto scalbnd32(decimal32_t num, int exp) noexcept -> decimal32_t; - friend constexpr auto scalblnd32(decimal32_t num, long exp) noexcept -> decimal32_t; - - // These can be made public only for debugging matters -#ifndef BOOST_DECIMAL_DEBUG_MEMBERS -private: -#endif - // Replaces the biased exponent with the value of exp - template - constexpr auto edit_exponent(T exp) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void); - - // Replaces the value of the significand with sig - template - constexpr auto edit_significand(T sig) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void); - - // Replaces the current sign with the one provided - constexpr auto edit_sign(bool sign) noexcept -> void; -}; - -BOOST_DECIMAL_EXPORT using decimal32 [[deprecated("Use the renamed decimal32_t instead of decimal32")]] = decimal32_t; - -#if defined(__GNUC__) && __GNUC__ >= 8 -# pragma GCC diagnostic pop -#endif - -#if defined(__GNUC__) && __GNUC__ >= 6 -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wduplicated-branches" -# pragma GCC diagnostic ignored "-Wbool-compare" -# pragma GCC diagnostic ignored "-Wconversion" -#endif - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) -{ - static_assert(detail::is_integral_v, "Coefficient must be an integer"); - static_assert(detail::is_integral_v, "Exponent must be an integer"); - - bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); - - // If the coeff is not in range, make it so - // Only count the number of digits if we absolutely have to - int coeff_digits {-1}; - if (coeff > detail::d32_max_significand_value) - { - // Since we know that the unsigned coeff is >= 10'000'000 we can use this information to traverse pruned trees - coeff_digits = detail::d32_constructor_num_digits(coeff); - if (coeff_digits > detail::precision + 1) - { - const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif - - coeff /= detail::pow10(static_cast(digits_to_remove)); - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif - - coeff_digits -= digits_to_remove; - exp += static_cast(detail::fenv_round(coeff, sign)) + digits_to_remove; - } - else - { - exp += static_cast(detail::fenv_round(coeff, sign)); - } - } - - auto reduced_coeff {static_cast(coeff)}; - bool big_combination {false}; - - if (reduced_coeff == 0U) - { - // Normalize our handling of zeros - return; - } - - if (reduced_coeff <= detail::d32_biggest_no_combination_significand) - { - // If the coefficient fits directly, we don't need to use the combination field - // bits_.significand = reduced_coeff; - bits_ |= (reduced_coeff & detail::d32_not_11_significand_mask); - } - else - { - // Have to use the full combination field - bits_ |= (detail::d32_comb_11_mask | (reduced_coeff & detail::d32_11_significand_mask)); - big_combination = true; - } - - // If the exponent fits we do not need to use the combination field - const auto biased_exp {static_cast(exp + detail::bias)}; - if (biased_exp <= detail::d32_max_biased_exponent) - { - if (big_combination) - { - bits_ |= (biased_exp << detail::d32_11_exp_shift) & detail::d32_11_exp_mask; - } - else - { - bits_ |= (biased_exp << detail::d32_not_11_exp_shift) & detail::d32_not_11_exp_mask; - } - } - else - { - // If we can fit the extra exponent in the significand, then we can construct the value - // If we can't, the value is either 0 or infinity depending on the sign of exp - - if (coeff_digits == -1) - { - coeff_digits = detail::num_digits(reduced_coeff); - } - - const auto exp_delta {biased_exp - detail::d32_max_biased_exponent}; - const auto digit_delta {coeff_digits - static_cast(exp_delta)}; - if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision) - { - exp -= digit_delta; - reduced_coeff *= detail::pow10(static_cast(digit_delta)); - *this = decimal32_t(reduced_coeff, exp, sign); - } - else - { - bits_ = exp < 0 ? UINT32_C(0) : detail::d32_inf_mask; - } - } -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal32_t::decimal32_t(const T1 coeff, const T2 exp) noexcept : decimal32_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} - -#if defined(__GNUC__) && __GNUC__ >= 6 -# pragma GCC diagnostic pop -#endif - -constexpr decimal32_t::decimal32_t(const bool value) noexcept : decimal32_t(static_cast(value), 0, false) {} - -constexpr auto from_bits(const std::uint32_t bits) noexcept -> decimal32_t -{ - decimal32_t result; - result.bits_ = bits; - - return result; -} - -constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool -{ - return rhs.bits_ & detail::d32_sign_mask; -} - -constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_ & detail::d32_nan_mask) == detail::d32_nan_mask; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_ & detail::d32_snan_mask) == detail::d32_snan_mask; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return ((rhs.bits_ & detail::d32_nan_mask) == detail::d32_inf_mask); - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return ((rhs.bits_ & detail::d32_inf_mask) != detail::d32_inf_mask); - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check for de-normals - const auto sig {rhs.full_significand()}; - const auto exp {rhs.unbiased_exponent()}; - - if (exp <= detail::precision - 1) - { - return false; - } - - return (sig != 0) && isfinite(rhs); - #else - return rhs.full_significand() != 0; - #endif -} - -constexpr auto operator+(const decimal32_t rhs) noexcept -> decimal32_t -{ - return rhs; -} - -constexpr auto operator-(decimal32_t rhs) noexcept-> decimal32_t -{ - rhs.bits_ ^= detail::d32_sign_mask; - return rhs; -} - -// We use kahan summation here where applicable -// https://en.wikipedia.org/wiki/Kahan_summation_algorithm -// NOLINTNEXTLINE: If addition is actually subtraction than change operator and vice versa -constexpr auto operator+(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); - auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); - - return detail::d32_add_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator+(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs)) - { - return lhs; - } - #endif - - // Make the significand type wide enough that it won't overflow during normalization - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - - // Now that the rhs has been normalized, it is guaranteed to fit into the decimal32_t significand type - const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - - return detail::d32_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, (rhs < 0)); -} - -template -constexpr auto operator+(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return rhs + lhs; -} - -constexpr auto decimal32_t::operator++() noexcept -> decimal32_t& -{ - constexpr decimal32_t one(1, 0); - *this = *this + one; - return *this; -} - -constexpr auto decimal32_t::operator++(int) noexcept -> decimal32_t -{ - return ++(*this); -} - -constexpr auto decimal32_t::operator+=(const decimal32_t rhs) noexcept -> decimal32_t& -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator+=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator+=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) -{ - *this = *this + rhs; - return *this; -} - -// NOLINTNEXTLINE: If subtraction is actually addition than use operator+ and vice versa -constexpr auto operator-(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); - auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); - - // a - b = a + (-b) - rhs_components.sign = !rhs_components.sign; - return detail::d32_add_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator-(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - auto final_sig_rhs {static_cast(sig_rhs)}; - - return detail::d32_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, !(rhs < 0)); -} - -template -constexpr auto operator-(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(rhs)) - { - return rhs; - } - #endif - - auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - - exp_type exp_lhs {0}; - detail::normalize(sig_lhs, exp_lhs); - const auto final_sig_lhs {static_cast(sig_lhs)}; - - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d32_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), - sig_rhs, exp_rhs, !rhs.isneg()); -} - -constexpr auto decimal32_t::operator--() noexcept -> decimal32_t& -{ - constexpr decimal32_t one(1, 0); - *this = *this - one; - return *this; -} - -constexpr auto decimal32_t::operator--(int) noexcept -> decimal32_t -{ - return --(*this); -} - -constexpr auto decimal32_t::operator-=(const decimal32_t rhs) noexcept -> decimal32_t& -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator-=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator-=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) -{ - *this = *this - rhs; - return *this; -} - -constexpr auto operator==(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool -{ - return equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(rhs, lhs); -} - -constexpr auto operator!=(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -constexpr auto operator<(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - else if (isfinite(lhs) && isinf(rhs)) - { - return !rhs.isneg(); - } - } - #endif - - return sequential_less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !less_impl(rhs, lhs) && lhs != rhs; -} - -constexpr auto operator<=(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - if (isinf(lhs)) - { - return signbit(lhs); - } - if (isinf(rhs)) - { - return !signbit(rhs); - } - } - #endif - - return !sequential_less_impl(rhs, lhs); -} - -template -constexpr auto operator<=(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs)) - { - if (isnan(lhs)) - { - return false; - } - if (isinf(lhs)) - { - return signbit(lhs); - } - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(rhs)) - { - if (isnan(rhs)) - { - return false; - } - if (isinf(rhs)) - { - return !signbit(rhs); - } - } - #endif - - return !(rhs < lhs); -} - -constexpr auto operator>(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - if (isinf(lhs)) - { - return !signbit(lhs); - } - if (isinf(rhs)) - { - return signbit(rhs); - } - } - #endif - - return sequential_less_impl(rhs, lhs); -} - -template -constexpr auto operator>(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return rhs < lhs; -} - -template -constexpr auto operator>(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return rhs < lhs; -} - -constexpr auto operator>=(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !sequential_less_impl(lhs, rhs); -} - -template -constexpr auto operator>=(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator<=>(const decimal32_t lhs, const decimal32_t rhs) noexcept -> std::partial_ordering -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -#endif - -constexpr auto decimal32_t::unbiased_exponent() const noexcept -> exponent_type -{ - exponent_type expval {}; - - if ((bits_ & detail::d32_comb_11_mask) == detail::d32_comb_11_mask) - { - expval = (bits_ & detail::d32_11_exp_mask) >> detail::d32_11_exp_shift; - } - else - { - expval = (bits_ & detail::d32_not_11_exp_mask) >> detail::d32_not_11_exp_shift; - } - - return expval; -} - -constexpr auto decimal32_t::biased_exponent() const noexcept -> biased_exponent_type -{ - return static_cast(unbiased_exponent()) - detail::bias; -} - -template -constexpr auto decimal32_t::edit_exponent(T expval) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void) -{ - *this = decimal32_t(this->full_significand(), expval, this->isneg()); -} - -constexpr auto decimal32_t::full_significand() const noexcept -> significand_type -{ - significand_type significand {}; - - if ((bits_ & detail::d32_comb_11_mask) == detail::d32_comb_11_mask) - { - constexpr std::uint32_t implied_bit {UINT32_C(0b100000000000000000000000)}; - significand = implied_bit | (bits_ & detail::d32_11_significand_mask); - } - else - { - significand = bits_ & detail::d32_not_11_significand_mask; - } - - return significand; -} - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable : 4127) -#endif - -template -constexpr auto decimal32_t::edit_significand(const T sig) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void) -{ - const auto unsigned_sig {detail::make_positive_unsigned(sig)}; - BOOST_DECIMAL_IF_CONSTEXPR (detail::is_signed_v) - { - *this = decimal32_t(unsigned_sig, this->biased_exponent(), this->isneg() || sig < 0); - } - else - { - *this = decimal32_t(unsigned_sig, this->biased_exponent(), this->isneg()); - } -} - -#ifdef _MSC_VER -# pragma warning(pop) -#endif - -constexpr auto decimal32_t::isneg() const noexcept -> bool -{ - return static_cast(bits_ & detail::d32_sign_mask); -} - -// Allows changing the sign even on nans and infs -constexpr auto decimal32_t::edit_sign(const bool sign) noexcept -> void -{ - if (sign) - { - bits_ |= detail::d32_sign_mask; - } - else - { - bits_ &= ~detail::d32_sign_mask; - } -} - -#if defined(__clang__) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wfloat-equal" -#elif defined(__GNUC__) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wfloat-equal" -#endif - -constexpr auto decimal32_t::to_components() const noexcept -> detail::decimal32_t_components -{ - detail::decimal32_t_components components {}; - - exponent_type expval {}; - significand_type significand {}; - - if ((bits_ & detail::d32_comb_11_mask) == detail::d32_comb_11_mask) - { - constexpr std::uint32_t implied_bit {UINT32_C(0b100000000000000000000000)}; - significand = implied_bit | (bits_ & detail::d32_11_significand_mask); - expval = (bits_ & detail::d32_11_exp_mask) >> detail::d32_11_exp_shift; - } - else - { - significand = bits_ & detail::d32_not_11_significand_mask; - expval = (bits_ & detail::d32_not_11_exp_mask) >> detail::d32_not_11_exp_shift; - } - - components.sig = significand; - components.exp = static_cast(expval) - detail::bias_v; - components.sign = bits_ & detail::d32_sign_mask; - - return components; -} - - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::decimal32_t(const Float val) noexcept -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val != val) - { - *this = boost::decimal::from_bits(boost::decimal::detail::d32_nan_mask); - } - else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) - { - *this = boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask); - } - else - #endif - { - const auto components {detail::ryu::floating_point_to_fd128(val)}; - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "Mant: " << components.mantissa - << "\nExp: " << components.exponent - << "\nSign: " << components.sign << std::endl; - #endif - - #ifndef BOOST_DECIMAL_FAST_MATH - if (components.exponent > detail::emax) - { - *this = boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask); - } - else - #endif - { - *this = decimal32_t {components.mantissa, components.exponent, components.sign}; - } - } -} - -#if defined(__clang__) -# pragma clang diagnostic pop -#elif defined(__GNUC__) -# pragma GCC diagnostic pop -#endif - -template -BOOST_DECIMAL_CXX20_CONSTEXPR auto decimal32_t::operator=(const Float& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal32_t&) -{ - *this = decimal32_t{val}; - return *this; -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal32_t::decimal32_t(const Decimal val) noexcept -{ - *this = to_decimal(val); -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal32_t::decimal32_t(const Integer val) noexcept : decimal32_t{val, 0}// NOLINT : Incorrect parameter is never used -{ -} - -template -constexpr auto decimal32_t::operator=(const Integer& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) -{ - using ConversionType = std::conditional_t::value, std::int32_t, Integer>; - *this = decimal32_t{static_cast(val), 0}; - return *this; -} - -constexpr decimal32_t::operator bool() const noexcept -{ - constexpr decimal32_t zero {0, 0}; - return *this != zero; -} - -constexpr decimal32_t::operator int() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal32_t::operator unsigned() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal32_t::operator long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal32_t::operator unsigned long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal32_t::operator long long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal32_t::operator unsigned long long() const noexcept -{ - return to_integral(*this); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 - -constexpr decimal32_t::operator detail::builtin_int128_t() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal32_t::operator detail::builtin_uint128_t() const noexcept -{ - return to_integral(*this); -} - -#endif - -template , bool>> -constexpr decimal32_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR auto to_bits(const decimal32_t rhs) noexcept -> std::uint32_t -{ - const auto bits {detail::bit_cast(rhs.bits_)}; - return bits; -} - -constexpr auto operator*(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - const auto lhs_components {lhs.to_components()}; - const auto rhs_components {rhs.to_components()}; - - return detail::mul_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator*(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs)) - { - return lhs; - } - #endif - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - const auto final_sig_rhs {static_cast(sig_rhs)}; - - return detail::mul_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, (rhs < 0)); -} - -template -constexpr auto operator*(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return rhs * lhs; -} - -constexpr auto decimal32_t::operator*=(const decimal32_t rhs) noexcept -> decimal32_t& -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator*=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator*=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) -{ - *this = *this * rhs; - return *this; -} - -constexpr auto div_impl(const decimal32_t lhs, const decimal32_t rhs, decimal32_t& q, decimal32_t& r) noexcept -> void -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal32_t zero {0, 0}; - constexpr decimal32_t nan {boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask)}; - constexpr decimal32_t inf {boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask)}; - - const bool sign {lhs.isneg() != rhs.isneg()}; - - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) - { - q = nan; - r = nan; - return; - } - - switch (lhs_fp) - { - case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; - return; - case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; - return; - default: - static_cast(lhs); - } - - switch (rhs_fp) - { - case FP_ZERO: - q = inf; - r = zero; - return; - case FP_INFINITE: - q = sign ? -zero : zero; - r = lhs; - return; - default: - static_cast(rhs); - } - #else - static_cast(r); - #endif - - auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); - - auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "sig lhs: " << sig_lhs - << "\nexp lhs: " << exp_lhs - << "\nsig rhs: " << sig_rhs - << "\nexp rhs: " << exp_rhs << std::endl; - #endif - - q = detail::generic_div_impl(lhs_components, rhs_components); -} - -constexpr auto mod_impl(const decimal32_t lhs, const decimal32_t rhs, const decimal32_t& q, decimal32_t& r) noexcept -> void -{ - constexpr decimal32_t zero {0, 0}; - - // https://en.cppreference.com/w/cpp/numeric/math/fmod - auto q_trunc {q > zero ? floor(q) : ceil(q)}; - r = lhs - (decimal32_t(q_trunc) * rhs); -} - -constexpr auto operator/(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - decimal32_t q {}; - decimal32_t r {}; - div_impl(lhs, rhs, q, r); - - return q; -} - -template -constexpr auto operator/(const decimal32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - using exp_type = decimal32_t::biased_exponent_type; - using sig_type = decimal32_t::significand_type; - using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal32_t zero {0, 0}; - constexpr decimal32_t nan {boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask)}; - constexpr decimal32_t inf {boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask)}; - - const bool sign {lhs.isneg() != (rhs < 0)}; - - const auto lhs_fp {fpclassify(lhs)}; - - switch (lhs_fp) - { - case FP_NAN: - return nan; - case FP_INFINITE: - return inf; - case FP_ZERO: - return sign ? -zero : zero; - default: - static_cast(lhs); - } - - if (rhs == 0) - { - return sign ? -inf : inf; - } - #endif - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - detail::decimal32_t_components lhs_components {sig_lhs, exp_lhs, lhs.isneg()}; - - exp_type exp_rhs {}; - auto unsigned_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - detail::normalize(unsigned_rhs, exp_rhs); - detail::decimal32_t_components rhs_components {static_cast(unsigned_rhs), exp_rhs, rhs < 0}; - - return detail::generic_div_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator/(Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - using exp_type = decimal32_t::biased_exponent_type; - using sig_type = decimal32_t::significand_type; - using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal32_t zero {0, 0}; - constexpr decimal32_t nan {boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask)}; - constexpr decimal32_t inf {boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask)}; - - const bool sign {(lhs < 0) != rhs.isneg()}; - - const auto rhs_fp {fpclassify(rhs)}; - - if (rhs_fp == FP_NAN) - { - return nan; - } - - switch (rhs_fp) - { - case FP_INFINITE: - return sign ? -zero : zero; - case FP_ZERO: - return sign ? -inf : inf; - default: - static_cast(lhs); - } - #endif - - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); - - exp_type lhs_exp {}; - auto unsigned_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - detail::normalize(unsigned_lhs, lhs_exp); - detail::decimal32_t_components lhs_components {static_cast(unsigned_lhs), lhs_exp, lhs < 0}; - detail::decimal32_t_components rhs_components {sig_rhs, exp_rhs, rhs.isneg()}; - - return detail::generic_div_impl(lhs_components, rhs_components); -} - -constexpr auto decimal32_t::operator/=(const decimal32_t rhs) noexcept -> decimal32_t& -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator/=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal32_t::operator/=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) -{ - *this = *this / rhs; - return *this; -} - -constexpr auto operator%(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - decimal32_t q {}; - decimal32_t r {}; - div_impl(lhs, rhs, q, r); - mod_impl(lhs, rhs, q, r); - - return r; -} - -constexpr auto decimal32_t::operator%=(const decimal32_t rhs) noexcept -> decimal32_t& -{ - *this = *this % rhs; - return *this; -} - -// LCOV_EXCL_START -inline auto debug_pattern(const decimal32_t rhs) noexcept -> void -{ - #if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) - std::cerr << "Sig: " << rhs.full_significand() - << "\nExp: " << rhs.biased_exponent() - << "\nNeg: " << rhs.isneg() << std::endl; - #else - static_cast(rhs); - #endif -} -// LCOV_EXCL_STOP - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator float() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator double() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator long double() const noexcept -{ - // Double already has more range and precision than a decimal32_t will ever be able to provide - return static_cast(to_float(*this)); -} - -#ifdef BOOST_DECIMAL_HAS_FLOAT16 -constexpr decimal32_t::operator std::float16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT32 -constexpr decimal32_t::operator std::float32_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT64 -constexpr decimal32_t::operator std::float64_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 -constexpr decimal32_t::operator std::bfloat16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif - -constexpr auto operator&(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - return from_bits(lhs.bits_ & rhs.bits_); -} - -template -constexpr auto operator&(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(lhs.bits_ & static_cast(rhs)); -} - -template -constexpr auto operator&(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(static_cast(lhs) & rhs.bits_); -} - -constexpr auto operator|(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - return from_bits(lhs.bits_ | rhs.bits_); -} - -template -constexpr auto operator|(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(lhs.bits_ | static_cast(rhs)); -} - -template -constexpr auto operator|(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(static_cast(lhs) | rhs.bits_); -} - -constexpr auto operator^(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - return from_bits(lhs.bits_ ^ rhs.bits_); -} - -template -constexpr auto operator^(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(lhs.bits_ ^ static_cast(rhs)); -} - -template -constexpr auto operator^(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(static_cast(lhs) ^ rhs.bits_); -} - -constexpr auto operator<<(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - return from_bits(lhs.bits_ << rhs.bits_); -} - -template -constexpr auto operator<<(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(lhs.bits_ << static_cast(rhs)); -} - -template -constexpr auto operator<<(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(static_cast(lhs) << rhs.bits_); -} - -constexpr auto operator>>(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - return from_bits(lhs.bits_ >> rhs.bits_); -} - -template -constexpr auto operator>>(const decimal32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(lhs.bits_ >> static_cast(rhs)); -} - -template -constexpr auto operator>>(const Integer lhs, const decimal32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) -{ - return from_bits(static_cast(lhs) >> rhs.bits_); -} - -constexpr auto operator~(const decimal32_t lhs) noexcept -> decimal32_t -{ - return from_bits(~lhs.bits_); -} - -// 3.6.4 -// Effects: determines if the quantum exponents of x and y are the same. -// If both x and y are NaN, or infinity, they have the same quantum exponents; -// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. -// The samequantum functions raise no exception. -constexpr auto samequantumd32(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) - { - return true; - } - if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) - { - return false; - } - #endif - - return lhs.unbiased_exponent() == rhs.unbiased_exponent(); -} - -// 3.6.5 -// Effects: if x is finite, returns its quantum exponent. -// Otherwise, a domain error occurs and INT_MIN is returned. -constexpr auto quantexpd32(const decimal32_t x) noexcept -> int -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(x)) - { - return INT_MIN; - } - #endif - - return static_cast(x.unbiased_exponent()); -} - -// 3.6.6 -// Returns: a number that is equal in value (except for any rounding) and sign to x, -// and which has an exponent set to be equal to the exponent of y. -// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; -// if the result does not have the same value as x, the "inexact" floating-point exception is raised. -// If the exponent is being decreased and the significand of the result has more digits than the type would allow, -// the "invalid" floating-point exception is raised and the result is NaN. -// If one or both operands are NaN the result is NaN. -// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. -// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. -// The quantize functions do not signal underflow. -constexpr auto quantized32(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Return the correct type of nan - if (isnan(lhs)) - { - return lhs; - } - if (isnan(rhs)) - { - return rhs; - } - - // If one is infinity then return a signaling NAN - if (isinf(lhs) != isinf(rhs)) - { - return from_bits(detail::d32_snan_mask); - } - if (isinf(lhs) && isinf(rhs)) - { - return lhs; - } - #endif - - return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; -} - -constexpr auto scalblnd32(decimal32_t num, const long exp) noexcept -> decimal32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - constexpr decimal32_t zero {0, 0}; - - if (num == zero || exp == 0 || !isfinite(num)) - { - return num; - } - #endif - - num.edit_exponent(num.biased_exponent() + exp); - - return num; -} - -constexpr auto scalbnd32(const decimal32_t num, const int expval) noexcept -> decimal32_t -{ - return scalblnd32(num, static_cast(expval)); -} - -constexpr auto copysignd32(decimal32_t mag, const decimal32_t sgn) noexcept -> decimal32_t -{ - mag.edit_sign(sgn.isneg()); - return mag; -} - -} // namespace decimal -} // namespace boost - -namespace std { - -template <> -#ifdef _MSC_VER -class numeric_limits -#else -struct numeric_limits -#endif -{ - -#ifdef _MSC_VER -public: -#endif - - static constexpr bool is_specialized = true; - static constexpr bool is_signed = true; - static constexpr bool is_integer = false; - static constexpr bool is_exact = false; - static constexpr bool has_infinity = true; - static constexpr bool has_quiet_NaN = true; - static constexpr bool has_signaling_NaN = true; - - // These members were deprecated in C++23 - #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) - static constexpr std::float_denorm_style has_denorm = std::denorm_present; - static constexpr bool has_denorm_loss = true; - #endif - - static constexpr std::float_round_style round_style = std::round_indeterminate; - static constexpr bool is_iec559 = true; - static constexpr bool is_bounded = true; - static constexpr bool is_modulo = false; - static constexpr int digits = 7; - static constexpr int digits10 = digits; - static constexpr int max_digits10 = digits; - static constexpr int radix = 10; - static constexpr int min_exponent = -95; - static constexpr int min_exponent10 = min_exponent; - static constexpr int max_exponent = 96; - static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; - static constexpr bool tinyness_before = true; - - // Member functions - static constexpr auto (min) () -> boost::decimal::decimal32_t { return {UINT32_C(1), min_exponent}; } - static constexpr auto (max) () -> boost::decimal::decimal32_t { return {boost::decimal::detail::d32_max_significand_value, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal32_t { return {boost::decimal::detail::d32_max_significand_value, max_exponent - digits + 1, true}; } - static constexpr auto epsilon () -> boost::decimal::decimal32_t { return {UINT32_C(1), -digits + 1}; } - static constexpr auto round_error () -> boost::decimal::decimal32_t { return epsilon(); } - static constexpr auto infinity () -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask); } - static constexpr auto quiet_NaN () -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_nan_mask); } - static constexpr auto signaling_NaN() -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask); } - static constexpr auto denorm_min () -> boost::decimal::decimal32_t { return {1, boost::decimal::detail::etiny}; } -}; - -} // Namespace std - -#endif // BOOST_DECIMAL_decimal32_t_HPP diff --git a/include/boost/decimal/decimal32_fast.hpp b/include/boost/decimal/decimal32_fast.hpp deleted file mode 100644 index fe7311633..000000000 --- a/include/boost/decimal/decimal32_fast.hpp +++ /dev/null @@ -1,1510 +0,0 @@ -// Copyright 2023 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_decimal_fast32_t_HPP -#define BOOST_DECIMAL_decimal_fast32_t_HPP - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef BOOST_DECIMAL_BUILD_MODULE -#include -#include -#endif - -namespace boost { -namespace decimal { - -namespace detail { - -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_inf = std::numeric_limits::max() - 3; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_qnan = std::numeric_limits::max() - 2; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_snan = std::numeric_limits::max() - 1; - -} - -BOOST_DECIMAL_EXPORT class decimal_fast32_t final -{ -public: - using significand_type = std::uint32_t; - using exponent_type = std::uint8_t; - using biased_exponent_type = std::int32_t; - -private: - // In regular decimal32_t we have to decode the 24 bits of the significand and the 8 bits of the exp - // Here we just use them directly at the cost of at least 2 extra bytes of internal state - // since the fast integer types will be at least 32 and 8 bits respectively - - significand_type significand_ {}; - exponent_type exponent_ {}; - bool sign_ {}; - - constexpr auto isneg() const noexcept -> bool - { - return sign_; - } - - constexpr auto full_significand() const noexcept -> significand_type - { - return significand_; - } - - constexpr auto unbiased_exponent() const noexcept -> exponent_type - { - return exponent_; - } - - constexpr auto biased_exponent() const noexcept -> biased_exponent_type - { - return static_cast(exponent_) - detail::bias_v; - } - - constexpr auto to_components() const noexcept -> detail::decimal_fast32_t_components - { - return {full_significand(), biased_exponent(), isneg()}; - } - - friend constexpr auto div_impl(decimal_fast32_t lhs, decimal_fast32_t rhs, decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void; - - friend constexpr auto mod_impl(decimal_fast32_t lhs, decimal_fast32_t rhs, const decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void; - - // Attempts conversion to integral type: - // If this is nan sets errno to EINVAL and returns 0 - // If this is not representable sets errno to ERANGE and returns 0 - template - friend constexpr auto to_integral(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); - - template - friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); - - template - friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; - - // Equality template between any integer type and decimal32_t - template - friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - // Template to compare operator< for any integer type and decimal32_t - template - friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - template - friend constexpr auto to_dpd_d32(DecimalType val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint32_t); - - template - friend constexpr auto detail::d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; - - template - friend constexpr auto detail::d32_fast_add_only_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_inequality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - friend constexpr auto not_finite(const decimal_fast32_t& val) noexcept -> bool; - - template - friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; - - template - friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -public: - constexpr decimal_fast32_t() noexcept = default; - - template && detail::is_integral_v, bool> = true> - constexpr decimal_fast32_t(T1 coeff, T2 exp, bool sign = false) noexcept; - - template && detail::is_integral_v, bool> = true> - constexpr decimal_fast32_t(T1 coeff, T2 exp) noexcept; - - explicit constexpr decimal_fast32_t(bool value) noexcept; - - template , bool> = true> - constexpr decimal_fast32_t(Integer coeff) noexcept; - - template , bool> = true> - explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t(Float val) noexcept; - - constexpr decimal_fast32_t(const decimal_fast32_t& val) noexcept = default; - constexpr decimal_fast32_t(decimal_fast32_t&& val) noexcept = default; - constexpr auto operator=(const decimal_fast32_t& val) noexcept -> decimal_fast32_t& = default; - constexpr auto operator=(decimal_fast32_t&& val) noexcept -> decimal_fast32_t& = default; - - // cmath functions that are easier as friends - friend constexpr auto signbit(decimal_fast32_t val) noexcept -> bool; - friend constexpr auto isinf(decimal_fast32_t val) noexcept -> bool; - friend constexpr auto isnan(decimal_fast32_t val) noexcept -> bool; - friend constexpr auto issignaling(decimal_fast32_t val) noexcept -> bool; - friend constexpr auto isnormal(decimal_fast32_t val) noexcept -> bool; - friend constexpr auto isfinite(decimal_fast32_t val) noexcept -> bool; - - // Comparison operators - friend constexpr auto operator==(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; - friend constexpr auto operator!=(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; - friend constexpr auto operator<(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; - friend constexpr auto operator<=(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; - friend constexpr auto operator>(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; - friend constexpr auto operator>=(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; - - // Mixed comparisons - template - friend constexpr auto operator==(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator==(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - - friend constexpr auto operator<=>(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> std::partial_ordering; - - template - friend constexpr auto operator<=>(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - - template - friend constexpr auto operator<=>(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - - #endif - - // Unary operators - friend constexpr auto operator+(decimal_fast32_t rhs) noexcept -> decimal_fast32_t; - friend constexpr auto operator-(decimal_fast32_t lhs) noexcept -> decimal_fast32_t; - - // Binary arithmetic - friend constexpr auto operator+(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; - friend constexpr auto operator-(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; - friend constexpr auto operator*(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; - friend constexpr auto operator/(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; - friend constexpr auto operator%(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; - - // Mixed type binary arithmetic - template - friend constexpr auto operator+(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - template - friend constexpr auto operator+(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - template - friend constexpr auto operator-(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - template - friend constexpr auto operator-(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - template - friend constexpr auto operator*(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - template - friend constexpr auto operator*(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - template - friend constexpr auto operator/(decimal_fast32_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - template - friend constexpr auto operator/(Integer lhs, decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); - - // Compound operators - constexpr auto operator+=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; - constexpr auto operator-=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; - constexpr auto operator*=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; - constexpr auto operator/=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; - constexpr auto operator%=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; - - // Mixed type compound operators - template - constexpr auto operator+=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); - - template - constexpr auto operator-=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); - - template - constexpr auto operator*=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); - - template - constexpr auto operator/=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); - - // Increment and decrement - constexpr auto operator++() noexcept -> decimal_fast32_t&; - constexpr auto operator++(int) noexcept -> decimal_fast32_t&; - constexpr auto operator--() noexcept -> decimal_fast32_t&; - constexpr auto operator--(int) noexcept -> decimal_fast32_t&; - - // 3.2.2.4 Conversion to integral type - explicit constexpr operator bool() const noexcept; - explicit constexpr operator int() const noexcept; - explicit constexpr operator unsigned() const noexcept; - explicit constexpr operator long() const noexcept; - explicit constexpr operator unsigned long() const noexcept; - explicit constexpr operator long long() const noexcept; - explicit constexpr operator unsigned long long() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_INT128 - explicit constexpr operator detail::builtin_int128_t() const noexcept; - explicit constexpr operator detail::builtin_uint128_t() const noexcept; - #endif - - // 3.2.6 Conversion to a floating-point type - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_FLOAT16 - explicit constexpr operator std::float16_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT32 - explicit constexpr operator std::float32_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT64 - explicit constexpr operator std::float64_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 - explicit constexpr operator std::bfloat16_t() const noexcept; - #endif - - - // Conversion to another decimal type - template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> - constexpr operator Decimal() const noexcept; - - template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> - explicit constexpr operator Decimal() const noexcept; - - friend constexpr auto direct_init(significand_type significand, exponent_type exponent, bool sign) noexcept -> decimal_fast32_t; - friend constexpr auto direct_init(const detail::decimal_fast32_t_components& x) noexcept -> decimal_fast32_t; - - // or extensions that need to be friends - template - friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; - - friend constexpr auto copysignd32f(decimal_fast32_t mag, decimal_fast32_t sgn) noexcept -> decimal_fast32_t; - friend constexpr auto scalbnd32f(decimal_fast32_t num, int exp) noexcept -> decimal_fast32_t; - friend constexpr auto scalblnd32f(decimal_fast32_t num, long exp) noexcept -> decimal_fast32_t; - friend constexpr auto fmad32f(decimal_fast32_t x, decimal_fast32_t y, decimal_fast32_t z) noexcept -> decimal_fast32_t; - - template - friend constexpr auto ilogb(T d) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); - - template - friend constexpr auto logb(T num) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); - - // Specific decimal functionality - friend constexpr auto samequantumd32f(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; - friend constexpr auto quantexpd32f(decimal_fast32_t x) noexcept -> int; - friend constexpr auto quantized32f(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; -}; - -BOOST_DECIMAL_EXPORT using decimal32_fast [[deprecated("Use re-named type decimal_fast32_t instead of decimal_fast32_t")]] = decimal_fast32_t; - -template && detail::is_integral_v, bool>> -constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, bool sign) noexcept -{ - using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; - - minimum_coefficient_size min_coeff {coeff}; - - sign_ = sign; - - // Normalize in the constructor, so we never have to worry about it again - detail::normalize(min_coeff, exp, sign); - - significand_ = static_cast(min_coeff); - - const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias}; - - // decimal32_t exponent holds 8 bits - if (biased_exp > detail::max_biased_exp_v) - { - significand_ = detail::d32_fast_inf; - } - else if (biased_exp >= 0) - { - exponent_ = static_cast(biased_exp); - } - else - { - // Flush denorms to zero - significand_ = static_cast(0); - exponent_ = static_cast(detail::bias); - sign_ = false; - } -} - -template && detail::is_integral_v, bool>> -constexpr decimal_fast32_t::decimal_fast32_t(const T1 coeff, const T2 exp) noexcept : decimal_fast32_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} - -constexpr decimal_fast32_t::decimal_fast32_t(const bool value) noexcept : decimal_fast32_t(static_cast(value), 0, false) {} - -template , bool>> -constexpr decimal_fast32_t::decimal_fast32_t(const Integer val) noexcept : decimal_fast32_t{val, 0} {} - -#if defined(__clang__) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wfloat-equal" -#elif defined(__GNUC__) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wfloat-equal" -#endif - -template , bool>> -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::decimal_fast32_t(const Float val) noexcept -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val != val) - { - significand_ = detail::d32_fast_qnan; - } - else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) - { - significand_ = detail::d32_fast_inf; - } - else - #endif - { - const auto components {detail::ryu::floating_point_to_fd128(val)}; - *this = decimal_fast32_t {components.mantissa, components.exponent, components.sign}; - } -} - -#if defined(__clang__) -# pragma clang diagnostic pop -#elif defined(__GNUC__) -# pragma GCC diagnostic pop -#endif - -constexpr auto direct_init(const decimal_fast32_t::significand_type significand, const decimal_fast32_t::exponent_type exponent, const bool sign = false) noexcept -> decimal_fast32_t -{ - decimal_fast32_t val; - val.significand_ = significand; - val.exponent_ = exponent; - val.sign_ = sign; - - return val; -} - -constexpr auto direct_init(const detail::decimal_fast32_t_components& x) noexcept -> decimal_fast32_t -{ - decimal_fast32_t val; - val.significand_ = x.sig; - val.exponent_ = static_cast(static_cast(x.exp) + detail::bias_v); - val.sign_ = x.sign; - - return val; -} - -constexpr auto signbit(const decimal_fast32_t val) noexcept -> bool -{ - return val.sign_; -} - -constexpr auto isinf(const decimal_fast32_t val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ == detail::d32_fast_inf; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto isnan(const decimal_fast32_t val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ >= detail::d32_fast_qnan; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto issignaling(const decimal_fast32_t val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ == detail::d32_fast_snan; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto isnormal(const decimal_fast32_t val) noexcept -> bool -{ - return (val.significand_ != 0) - #ifndef BOOST_DECIMAL_FAST_MATH - && isfinite(val) && (val.exponent_ > static_cast(detail::precision_v - 1)) - #endif - ; -} - -constexpr auto isfinite(const decimal_fast32_t val) noexcept -> bool -{ - return val.significand_ < detail::d32_fast_inf; -} - -BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal_fast32_t& val) noexcept -> bool -{ - return val.significand_ >= detail::d32_fast_inf; -} - -constexpr auto operator==(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool -{ - return fast_equality_impl(lhs, rhs); -} - -constexpr auto operator!=(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool -{ - return fast_inequality_impl(lhs, rhs); -} - -constexpr auto operator<(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool -{ - return fast_less_impl(lhs, rhs); -} - -constexpr auto operator<=(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -constexpr auto operator>(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool -{ - return rhs < lhs; -} - -constexpr auto operator>=(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator==(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(rhs, lhs); -} - -template -constexpr auto operator!=(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator<(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return isnan(rhs) ? false : !less_impl(rhs, lhs) && lhs != rhs; - #else - return !less_impl(rhs, lhs) && lhs != rhs; - #endif -} - -template -constexpr auto operator<=(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return isnan(lhs) ? false : !(rhs < lhs); - #else - return !(rhs < lhs); - #endif -} - -template -constexpr auto operator<=(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return isnan(rhs) ? false : !(rhs < lhs); - #else - return !(rhs < lhs); - #endif -} - -template -constexpr auto operator>(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return isnan(lhs) ? false : rhs < lhs; - #else - return rhs < lhs; - #endif -} - -template -constexpr auto operator>(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return isnan(rhs) ? false : rhs < lhs; - #else - return rhs < lhs; - #endif -} - -template -constexpr auto operator>=(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return isnan(lhs) ? false : !(lhs < rhs); - #else - return !(lhs < rhs); - #endif -} - -template -constexpr auto operator>=(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return isnan(rhs) ? false : !(lhs < rhs); - #else - return !(lhs < rhs); - #endif -} - -#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator<=>(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> std::partial_ordering -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -#endif - -constexpr auto operator+(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t -{ - return rhs; -} - -constexpr auto operator-(decimal_fast32_t lhs) noexcept -> decimal_fast32_t -{ - lhs.sign_ = !lhs.sign_; - return lhs; -} - -constexpr auto operator+(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - if (lhs.isneg() || rhs.isneg()) - { - return detail::d32_add_impl(lhs, rhs); - } - else - { - const auto res {detail::d32_fast_add_only_impl(lhs, rhs)}; - return direct_init(res); - } -} - -template -constexpr auto operator+(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - - return detail::d32_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, (rhs < 0)); -} - -template -constexpr auto operator+(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - return rhs + lhs; -} - -constexpr auto operator-(const decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - rhs.sign_ = !rhs.sign_; - - if (lhs.sign_ || rhs.sign_) - { - return detail::d32_add_impl(lhs, rhs); - } - else - { - const auto res {detail::d32_fast_add_only_impl(lhs, rhs)}; - return direct_init(res); - } -} - -template -constexpr auto operator-(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - - return detail::d32_add_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, !(rhs < 0)); -} - -template -constexpr auto operator-(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(rhs)) - { - return rhs; - } - #endif - - auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - - exp_type exp_lhs {0}; - detail::normalize(sig_lhs, exp_lhs); - auto final_sig_lhs {static_cast(detail::make_positive_unsigned(sig_lhs))}; - - return detail::d32_add_impl( - final_sig_lhs, exp_lhs, (lhs < 0), - rhs.significand_, rhs.biased_exponent(), !rhs.sign_ - ); -} - -constexpr auto operator*(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs) || !isfinite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - using mul_type = std::uint_fast64_t; - - const auto isneg {lhs.sign_ != rhs.sign_}; - constexpr auto ten_pow_seven {detail::pow10(static_cast(6))}; - constexpr auto ten_pow_seven_exp_offset {95}; - constexpr auto ten_pow_six {detail::pow10(static_cast(5))}; - constexpr auto ten_pow_six_exp_offset {96}; - - auto res_sig {(static_cast(lhs.significand_) * static_cast(rhs.significand_))}; - const bool res_sig_14_dig {res_sig > UINT64_C(10000000000000)}; - res_sig /= res_sig_14_dig ? ten_pow_seven : ten_pow_six; - auto res_exp {lhs.exponent_ + rhs.exponent_}; - res_exp -= res_sig_14_dig ? ten_pow_seven_exp_offset : ten_pow_six_exp_offset; - - res_exp += detail::fenv_round(res_sig, isneg); - - BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); - BOOST_DECIMAL_ASSERT(res_exp <= 9'999'999 || res_sig == 0U); - - return direct_init(static_cast(res_sig), static_cast(res_exp) , isneg); -} - -template -constexpr auto operator*(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - - // We don't know if the original value of rhs fits into the decimal_fast32_t significand type - // but once it's normalized it's guaranteed to fit - const auto final_sig_rhs {static_cast(sig_rhs)}; - - return detail::mul_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, (rhs < 0)); -} - -template -constexpr auto operator*(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - return rhs * lhs; -} - -constexpr auto div_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void -{ - constexpr decimal_fast32_t zero {0, 0}; - - #ifndef BOOST_DECIMAL_FAST_MATH - const bool sign {lhs.isneg() != rhs.isneg()}; - constexpr decimal_fast32_t nan {direct_init(detail::d32_fast_qnan, UINT8_C(0), false)}; - constexpr decimal_fast32_t inf {direct_init(detail::d32_fast_inf, UINT8_C(0), false)}; - - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) - { - q = nan; - r = nan; - return; - } - - switch (lhs_fp) - { - case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; - return; - case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; - return; - default: - static_cast(lhs); - } - - switch (rhs_fp) - { - case FP_ZERO: - q = inf; - r = zero; - return; - case FP_INFINITE: - q = sign ? -zero : zero; - r = lhs; - return; - default: - static_cast(rhs); - } - #else - static_cast(r); - #endif - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "sig lhs: " << sig_lhs - << "\nexp lhs: " << exp_lhs - << "\nsig rhs: " << sig_rhs - << "\nexp rhs: " << exp_rhs << std::endl; - #endif - - using local_signed_exponent_type = std::common_type_t; - - static_assert(sizeof(local_signed_exponent_type) >= 4, "Error in local exponent type definition"); - - // We promote to uint64 since the significands are currently 32-bits - // By appending enough zeros to the LHS we end up finding what we need anyway - constexpr auto ten_pow_precision {detail::pow10(static_cast(detail::precision_v))}; - const auto big_sig_lhs {static_cast(lhs.significand_) * ten_pow_precision}; - auto res_sig {big_sig_lhs / static_cast(rhs.significand_)}; - local_signed_exponent_type res_exp {static_cast(lhs.exponent_) - static_cast(rhs.exponent_) + 94}; - const auto isneg {lhs.sign_ != rhs.sign_}; - - // If we have 8 figures round it down to 7 - if (res_sig >= UINT64_C(10'000'000)) - { - res_exp += detail::fenv_round(res_sig, isneg); - } - - BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); - BOOST_DECIMAL_ASSERT(res_exp <= 9'999'999 || res_sig == 0U); - - if (BOOST_DECIMAL_LIKELY(res_exp >= 0)) - { - q = direct_init(static_cast(res_sig), static_cast(res_exp), isneg); - } - else - { - // Flush to zero - q = zero; - } -} - -constexpr auto mod_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, const decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void -{ - constexpr decimal_fast32_t zero {0, 0}; - - // https://en.cppreference.com/w/cpp/numeric/math/fmod - auto q_trunc {q > zero ? floor(q) : ceil(q)}; - r = lhs - (decimal_fast32_t(q_trunc) * rhs); -} - -constexpr auto operator/(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t -{ - decimal_fast32_t q {}; - decimal_fast32_t r {}; - div_impl(lhs, rhs, q, r); - - return q; -} - -template -constexpr auto operator/(const decimal_fast32_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - using exp_type = decimal_fast32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast32_t zero {0, 0}; - constexpr decimal_fast32_t nan {direct_init(detail::d32_fast_qnan, UINT8_C(0), false)}; - constexpr decimal_fast32_t inf {direct_init(detail::d32_fast_inf, UINT8_C(0), false)}; - - const bool sign {lhs.isneg() != (rhs < 0)}; - - const auto lhs_fp {fpclassify(lhs)}; - - switch (lhs_fp) - { - case FP_NAN: - return nan; - case FP_INFINITE: - return inf; - case FP_ZERO: - return sign ? -zero : zero; - default: - static_cast(lhs); - } - - if (rhs == 0) - { - return sign ? -inf : inf; - } - #endif - - const detail::decimal_fast32_t_components lhs_components {lhs.significand_, lhs.biased_exponent(), lhs.sign_}; - exp_type exp_rhs {}; - const detail::decimal_fast32_t_components rhs_components {detail::shrink_significand(detail::make_positive_unsigned(rhs), exp_rhs), exp_rhs, rhs < 0}; - - return detail::generic_div_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator/(const Integer lhs, const decimal_fast32_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) -{ - using exp_type = decimal_fast32_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast32_t zero {0, 0}; - constexpr decimal_fast32_t nan {direct_init(detail::d32_fast_qnan, UINT8_C(0), false)}; - constexpr decimal_fast32_t inf {direct_init(detail::d32_fast_inf, UINT8_C(0), false)}; - - const bool sign {(lhs < 0) != rhs.isneg()}; - - const auto rhs_fp {fpclassify(rhs)}; - - if (rhs_fp == FP_NAN) - { - return nan; - } - - switch (rhs_fp) - { - case FP_INFINITE: - return sign ? -zero : zero; - case FP_ZERO: - return sign ? -inf : inf; - default: - static_cast(lhs); - } - #endif - - exp_type lhs_exp {}; - const auto lhs_sig {detail::make_positive_unsigned(detail::shrink_significand(lhs, lhs_exp))}; - const detail::decimal_fast32_t_components lhs_components {lhs_sig, lhs_exp, lhs < 0}; - const detail::decimal_fast32_t_components rhs_components {rhs.significand_, rhs.biased_exponent(), rhs.isneg()}; - - return detail::generic_div_impl(lhs_components, rhs_components); -} - -constexpr auto operator%(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t -{ - decimal_fast32_t q {}; - decimal_fast32_t r {}; - div_impl(lhs, rhs, q, r); - mod_impl(lhs, rhs, q, r); - - return r; -} - -constexpr auto decimal_fast32_t::operator%=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& -{ - *this = *this % rhs; - return *this; -} - -constexpr auto decimal_fast32_t::operator+=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& -{ - *this = *this + rhs; - return *this; -} - -constexpr auto decimal_fast32_t::operator-=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& -{ - *this = *this - rhs; - return *this; -} - -constexpr auto decimal_fast32_t::operator*=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& -{ - *this = *this * rhs; - return *this; -} - -constexpr auto decimal_fast32_t::operator/=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal_fast32_t::operator+=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal_fast32_t::operator-=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal_fast32_t::operator*=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal_fast32_t::operator/=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) -{ - *this = *this / rhs; - return *this; -} - -constexpr auto decimal_fast32_t::operator++() noexcept -> decimal_fast32_t& -{ - constexpr decimal_fast32_t one(1, 0); - *this = *this + one; - return *this; -} - -constexpr auto decimal_fast32_t::operator++(int) noexcept -> decimal_fast32_t& -{ - return ++(*this); -} - -constexpr auto decimal_fast32_t::operator--() noexcept -> decimal_fast32_t& -{ - constexpr decimal_fast32_t one(1, 0); - *this = *this - one; - return *this; -} - -constexpr auto decimal_fast32_t::operator--(int) noexcept -> decimal_fast32_t& -{ - return --(*this); -} - -constexpr decimal_fast32_t::operator bool() const noexcept -{ - constexpr decimal_fast32_t zero {0, 0}; - return *this != zero; -} - -constexpr decimal_fast32_t::operator int() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast32_t::operator unsigned() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast32_t::operator long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast32_t::operator unsigned long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast32_t::operator long long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast32_t::operator unsigned long long() const noexcept -{ - return to_integral(*this); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 - -constexpr decimal_fast32_t::operator detail::builtin_int128_t() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast32_t::operator detail::builtin_uint128_t() const noexcept -{ - return to_integral(*this); -} - -#endif - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator float() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator double() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator long double() const noexcept -{ - // The precision and range of double already exceeds what decimal_fast32_t can provide - return static_cast(to_float(*this)); -} - -#ifdef BOOST_DECIMAL_HAS_FLOAT16 -constexpr decimal_fast32_t::operator std::float16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT32 -constexpr decimal_fast32_t::operator std::float32_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT64 -constexpr decimal_fast32_t::operator std::float64_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 -constexpr decimal_fast32_t::operator std::bfloat16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif - -template && (detail::decimal_val_v > detail::decimal_val_v), bool>> -constexpr decimal_fast32_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> -constexpr decimal_fast32_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -constexpr auto scalblnd32f(const decimal_fast32_t num, const long exp) noexcept -> decimal_fast32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - constexpr decimal_fast32_t zero {0, 0}; - - if (num == zero || exp == 0 || !isfinite(num)) - { - return num; - } - #endif - - const auto res {decimal_fast32_t(num.significand_, num.biased_exponent() + exp, num.sign_)}; - - return res; -} - -constexpr auto scalbnd32f(const decimal_fast32_t num, const int expval) noexcept -> decimal_fast32_t -{ - return scalblnd32f(num, static_cast(expval)); -} - -constexpr auto copysignd32f(decimal_fast32_t mag, const decimal_fast32_t sgn) noexcept -> decimal_fast32_t -{ - mag.sign_ = sgn.sign_; - return mag; -} - -// Effects: determines if the quantum exponents of x and y are the same. -// If both x and y are NaN, or infinity, they have the same quantum exponents; -// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. -// The samequantum functions raise no exception. -constexpr auto samequantumd32f(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) - { - return true; - } - if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) - { - return false; - } - #endif - - return lhs.unbiased_exponent() == rhs.unbiased_exponent(); -} - -// Effects: if x is finite, returns its quantum exponent. -// Otherwise, a domain error occurs and INT_MIN is returned. -constexpr auto quantexpd32f(const decimal_fast32_t x) noexcept -> int -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (!isfinite(x)) - { - return INT_MIN; - } - #endif - - return static_cast(x.unbiased_exponent()); -} - -// Returns: a number that is equal in value (except for any rounding) and sign to x, -// and which has an exponent set to be equal to the exponent of y. -// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; -// if the result does not have the same value, as x, the "inexact" floating-point exception is raised. -// If the exponent is being decreased and the significand of the result has more digits than the type would allow, -// the "invalid" floating-point exception is raised and the result is NaN. -// If one or both operands are NaN, the result is NaN. -// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. -// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. -// The quantize functions do not signal underflow. -constexpr auto quantized32f(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Return the correct type of nan - if (isnan(lhs)) - { - return lhs; - } - else if (isnan(rhs)) - { - return rhs; - } - - // If one is infinity then return a signaling NAN - if (isinf(lhs) != isinf(rhs)) - { - return direct_init(detail::d32_fast_snan, UINT8_C(0)); - } - else if (isinf(lhs) && isinf(rhs)) - { - return lhs; - } - #endif - - return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; -} - -} // namespace decimal -} // namespace boost - -namespace std { - -template <> -#ifdef _MSC_VER -class numeric_limits -#else -struct numeric_limits -#endif -{ - -#ifdef _MSC_VER - public: -#endif - - static constexpr bool is_specialized = true; - static constexpr bool is_signed = true; - static constexpr bool is_integer = false; - static constexpr bool is_exact = false; - static constexpr bool has_infinity = true; - static constexpr bool has_quiet_NaN = true; - static constexpr bool has_signaling_NaN = true; - - // These members were deprecated in C++23 - #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) - static constexpr std::float_denorm_style has_denorm = std::denorm_absent; - static constexpr bool has_denorm_loss = false; - #endif - - static constexpr std::float_round_style round_style = std::round_indeterminate; - static constexpr bool is_iec559 = false; - static constexpr bool is_bounded = true; - static constexpr bool is_modulo = false; - static constexpr int digits = 7; - static constexpr int digits10 = digits; - static constexpr int max_digits10 = digits; - static constexpr int radix = 10; - static constexpr int min_exponent = -95; - static constexpr int min_exponent10 = min_exponent; - static constexpr int max_exponent = 96; - static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; - static constexpr bool tinyness_before = true; - - // Member functions - static constexpr auto (min) () -> boost::decimal::decimal_fast32_t { return {UINT32_C(1), min_exponent}; } - static constexpr auto (max) () -> boost::decimal::decimal_fast32_t { return {UINT32_C(9'999'999), max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal_fast32_t { return {UINT32_C(9'999'999), max_exponent - digits + 1, true}; } - static constexpr auto epsilon () -> boost::decimal::decimal_fast32_t { return {UINT32_C(1), -digits + 1}; } - static constexpr auto round_error () -> boost::decimal::decimal_fast32_t { return epsilon(); } - static constexpr auto infinity () -> boost::decimal::decimal_fast32_t { return boost::decimal::direct_init(boost::decimal::detail::d32_fast_inf, UINT8_C((0))); } - static constexpr auto quiet_NaN () -> boost::decimal::decimal_fast32_t { return boost::decimal::direct_init(boost::decimal::detail::d32_fast_qnan, UINT8_C((0))); } - static constexpr auto signaling_NaN() -> boost::decimal::decimal_fast32_t { return boost::decimal::direct_init(boost::decimal::detail::d32_fast_snan, UINT8_C((0))); } - - // With denorm absent returns the same value as min - static constexpr auto denorm_min () -> boost::decimal::decimal_fast32_t { return min(); } -}; - -} // Namespace std - -#endif //BOOST_DECIMAL_decimal_fast32_t_HPP diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index e3e7bbfd2..896011f1f 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -1,10 +1,2169 @@ -// Copyright 2025 Matt Borland +// Copyright 2023 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#ifndef BOOST_DECIMAL_DECIMAL32_T_HPP -#define BOOST_DECIMAL_DECIMAL32_T_HPP +#ifndef BOOST_DECIMAL_decimal32_t_HPP +#define BOOST_DECIMAL_decimal32_t_HPP -#include +#include +#include +#include +#include +#include +#include "detail/int128.hpp" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -#endif // BOOST_DECIMAL_DECIMAL32_T_HPP +#ifndef BOOST_DECIMAL_BUILD_MODULE + +#include +#include +#include +#include +#include +#include +#include + +#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) +#include +#include +#endif + +#endif // BOOST_DECIMAL_BUILD_MODULE + +namespace boost { +namespace decimal { + +namespace detail { + +// See IEEE 754 section 3.5.2 +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_inf_mask = UINT32_C(0x78000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_nan_mask = UINT32_C(0x7C000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_snan_mask = UINT32_C(0x7E000000); + +// Comb. Exponent Significand +// s eeeeeeee ttttttttttttttttttttttt - sign + 2 steering bits concatenate to 6 bits of exponent (8 total) + 23 bits of significand like float +// s 11 eeeeeeee [100] + ttttttttttttttttttttt - sign + 2 steering bits + 8 bits of exponent + 21 bits of significand (0b100 + 21 bits) +// +// Only is the type different in steering 11 which yields significand 100 + 21 bits giving us our 24 total bits of precision + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_sign_mask = UINT32_C(0b10000000000000000000000000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_combination_field_mask = UINT32_C(0b01100000000000000000000000000000); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_comb_11_mask = UINT32_C(0b0'11000'000000'0000000000'0000000000); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_mask = UINT32_C(0b01111111100000000000000000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_shift = UINT32_C(23); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_mask = UINT32_C(0b00011111111000000000000000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_shift = UINT32_C(21); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_significand_mask = UINT32_C(0b00000000011111111111111111111111); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_significand_mask = UINT32_C(0b00000000000111111111111111111111); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_biggest_no_combination_significand = UINT32_C(0b11111111111111111111111); // 23 bits + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_max_biased_exponent = UINT32_C(191); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_max_significand_value = UINT32_C(9'999'999); + +template +constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +} // namespace detail + +#if defined(__GNUC__) && __GNUC__ >= 8 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wclass-memaccess" +#endif + + +// ISO/IEC DTR 24733 +// 3.2.2 class decimal32_t +BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions) +{ +public: + using significand_type = std::uint32_t; + using exponent_type = std::uint32_t; + using biased_exponent_type = std::int32_t; + +private: + + std::uint32_t bits_ {}; + + // Returns the un-biased (quantum) exponent + constexpr auto unbiased_exponent() const noexcept -> exponent_type ; + + // Returns the biased exponent + constexpr auto biased_exponent() const noexcept -> biased_exponent_type; + + // Returns the significand complete with the bits implied from the combination field + constexpr auto full_significand() const noexcept -> significand_type ; + constexpr auto isneg() const noexcept -> bool; + + // Returns a complete struct so we don't have to decode the number multiple times if we need everything + constexpr auto to_components() const noexcept -> detail::decimal32_t_components; + + // Attempts conversion to integral type: + // If this is nan sets errno to EINVAL and returns 0 + // If this is not representable sets errno to ERANGE and returns 0 + template + friend constexpr auto to_integral(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); + + template + friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); + + template + friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; + + friend constexpr auto div_impl(decimal32_t lhs, decimal32_t rhs, decimal32_t& q, decimal32_t& r) noexcept -> void; + friend constexpr auto mod_impl(decimal32_t lhs, decimal32_t rhs, const decimal32_t& q, decimal32_t& r) noexcept -> void; + + template + friend constexpr auto ilogb(T d) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); + + template + friend constexpr auto logb(T num) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); + + // Debug bit pattern + friend constexpr auto from_bits(std::uint32_t bits) noexcept -> decimal32_t; + friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_bits(decimal32_t rhs) noexcept -> std::uint32_t; + friend inline auto debug_pattern(decimal32_t rhs) noexcept -> void; + + // Equality template between any integer type and decimal32_t + template + friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + // Template to compare operator< for any integer type and decimal32_t + template + friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + template + friend constexpr auto equality_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; + + template + friend constexpr auto sequential_less_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; + + friend constexpr auto to_bid_d32(decimal32_t val) noexcept -> std::uint32_t; + + friend constexpr auto from_bid_d32(std::uint32_t bits) noexcept -> decimal32_t; + + template + friend constexpr auto to_dpd_d32(DecimalType val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint32_t); + + template + friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; + + template + friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +public: + // 3.2.2.1 construct/copy/destroy: + constexpr decimal32_t() noexcept = default; + + // 3.2.2.2 Conversion from a floating-point type + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS + explicit + #endif + BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t(Float val) noexcept; + + template + BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal32_t&); + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + explicit constexpr decimal32_t(Decimal val) noexcept; + + // 3.2.2.3 Conversion from integral type + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + constexpr decimal32_t(Integer val) noexcept; + + template + constexpr auto operator=(const Integer& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); + + // 3.2.2.4 Conversion to integral type + explicit constexpr operator bool() const noexcept; + explicit constexpr operator int() const noexcept; + explicit constexpr operator unsigned() const noexcept; + explicit constexpr operator long() const noexcept; + explicit constexpr operator unsigned long() const noexcept; + explicit constexpr operator long long() const noexcept; + explicit constexpr operator unsigned long long() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_INT128 + explicit constexpr operator detail::builtin_int128_t() const noexcept; + explicit constexpr operator detail::builtin_uint128_t() const noexcept; + #endif + + // We allow implict promotions to and decimal type with greater or equal precision (e.g. decimal_fast32_t) + template , bool> = true> + constexpr operator Decimal() const noexcept; + + // 3.2.5 initialization from coefficient and exponent: + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal32_t(T1 coeff, T2 exp, bool sign = false) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal32_t(T1 coeff, T2 exp) noexcept; + + explicit constexpr decimal32_t(bool value) noexcept; + + constexpr decimal32_t(const decimal32_t& val) noexcept = default; + constexpr decimal32_t(decimal32_t&& val) noexcept = default; + constexpr auto operator=(const decimal32_t& val) noexcept -> decimal32_t& = default; + constexpr auto operator=(decimal32_t&& val) noexcept -> decimal32_t& = default; + + // 3.2.6 Conversion to floating-point type + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_FLOAT16 + explicit constexpr operator std::float16_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT32 + explicit constexpr operator std::float32_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT64 + explicit constexpr operator std::float64_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 + explicit constexpr operator std::bfloat16_t() const noexcept; + #endif + + // cmath functions that are easier as friends + friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; + friend constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; + friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; + friend constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; + friend constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; + friend constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal32_t rhs) noexcept -> bool; + + // 3.2.7 unary arithmetic operators: + friend constexpr auto operator+(decimal32_t rhs) noexcept -> decimal32_t; + friend constexpr auto operator-(decimal32_t rhs) noexcept -> decimal32_t; + + // 3.2.8 binary arithmetic operators: + friend constexpr auto operator+(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator+(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator+(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator-(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator-(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator-(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator*(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator*(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator*(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator/(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator/(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator/(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator%(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + // 3.2.2.5 Increment and Decrement + constexpr auto operator++() noexcept -> decimal32_t&; + constexpr auto operator++(int) noexcept -> decimal32_t; // NOLINT : C++14 so constexpr implies const + constexpr auto operator--() noexcept -> decimal32_t&; + constexpr auto operator--(int) noexcept -> decimal32_t; // NOLINT : C++14 so constexpr implies const + + // 3.2.2.6 Compound assignment + constexpr auto operator+=(decimal32_t rhs) noexcept -> decimal32_t&; + + template + constexpr auto operator+=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); + + template + constexpr auto operator+=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); + + constexpr auto operator-=(decimal32_t rhs) noexcept -> decimal32_t&; + + template + constexpr auto operator-=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); + + template + constexpr auto operator-=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); + + constexpr auto operator*=(decimal32_t rhs) noexcept -> decimal32_t&; + + template + constexpr auto operator*=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); + + template + constexpr auto operator*=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); + + constexpr auto operator/=(decimal32_t rhs) noexcept -> decimal32_t&; + + template + constexpr auto operator/=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&); + + template + constexpr auto operator/=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&); + + constexpr auto operator%=(decimal32_t rhs) noexcept -> decimal32_t&; + + // 3.2.9 comparison operators: + // Equality + friend constexpr auto operator==(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; + + template + friend constexpr auto operator==(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator==(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Inequality + friend constexpr auto operator!=(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; + + template + friend constexpr auto operator!=(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Less + friend constexpr auto operator<(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; + + template + friend constexpr auto operator<(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Less equal + friend constexpr auto operator<=(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; + + template + friend constexpr auto operator<=(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Greater + friend constexpr auto operator>(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; + + template + friend constexpr auto operator>(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Greater equal + friend constexpr auto operator>=(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; + + template + friend constexpr auto operator>=(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + friend constexpr auto operator<=>(decimal32_t lhs, decimal32_t rhs) noexcept -> std::partial_ordering; + + template + friend constexpr auto operator<=>(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + + template + friend constexpr auto operator<=>(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + #endif + + // Bitwise operators + friend constexpr auto operator&(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator&(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator&(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator|(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator|(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator|(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator^(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator^(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator^(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator<<(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator<<(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator<<(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator>>(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + template + friend constexpr auto operator>>(decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + template + friend constexpr auto operator>>(Integer lhs, decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t); + + friend constexpr auto operator~(decimal32_t lhs) noexcept -> decimal32_t; + + // extensions + // 3.6.4 Same Quantum + friend constexpr auto samequantumd32(decimal32_t lhs, decimal32_t rhs) noexcept -> bool; + + // 3.6.5 Quantum exponent + friend constexpr auto quantexpd32(decimal32_t x) noexcept -> int; + + // 3.6.6 Quantize + friend constexpr auto quantized32(decimal32_t lhs, decimal32_t rhs) noexcept -> decimal32_t; + + // functions that need to be friends + friend constexpr auto copysignd32(decimal32_t mag, decimal32_t sgn) noexcept -> decimal32_t; + friend constexpr auto fmad32(decimal32_t x, decimal32_t y, decimal32_t z) noexcept -> decimal32_t; + + // Related to + template + friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; + + friend constexpr auto scalbnd32(decimal32_t num, int exp) noexcept -> decimal32_t; + friend constexpr auto scalblnd32(decimal32_t num, long exp) noexcept -> decimal32_t; + + // These can be made public only for debugging matters +#ifndef BOOST_DECIMAL_DEBUG_MEMBERS +private: +#endif + // Replaces the biased exponent with the value of exp + template + constexpr auto edit_exponent(T exp) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void); + + // Replaces the value of the significand with sig + template + constexpr auto edit_significand(T sig) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void); + + // Replaces the current sign with the one provided + constexpr auto edit_sign(bool sign) noexcept -> void; +}; + +BOOST_DECIMAL_EXPORT using decimal32 [[deprecated("Use the renamed decimal32_t instead of decimal32")]] = decimal32_t; + +#if defined(__GNUC__) && __GNUC__ >= 8 +# pragma GCC diagnostic pop +#endif + +#if defined(__GNUC__) && __GNUC__ >= 6 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wduplicated-branches" +# pragma GCC diagnostic ignored "-Wbool-compare" +# pragma GCC diagnostic ignored "-Wconversion" +#endif + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) +{ + static_assert(detail::is_integral_v, "Coefficient must be an integer"); + static_assert(detail::is_integral_v, "Exponent must be an integer"); + + bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); + + // If the coeff is not in range, make it so + // Only count the number of digits if we absolutely have to + int coeff_digits {-1}; + if (coeff > detail::d32_max_significand_value) + { + // Since we know that the unsigned coeff is >= 10'000'000 we can use this information to traverse pruned trees + coeff_digits = detail::d32_constructor_num_digits(coeff); + if (coeff_digits > detail::precision + 1) + { + const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; + + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic push + # pragma GCC diagnostic ignored "-Wconversion" + #endif + + coeff /= detail::pow10(static_cast(digits_to_remove)); + + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic pop + #endif + + coeff_digits -= digits_to_remove; + exp += static_cast(detail::fenv_round(coeff, sign)) + digits_to_remove; + } + else + { + exp += static_cast(detail::fenv_round(coeff, sign)); + } + } + + auto reduced_coeff {static_cast(coeff)}; + bool big_combination {false}; + + if (reduced_coeff == 0U) + { + // Normalize our handling of zeros + return; + } + + if (reduced_coeff <= detail::d32_biggest_no_combination_significand) + { + // If the coefficient fits directly, we don't need to use the combination field + // bits_.significand = reduced_coeff; + bits_ |= (reduced_coeff & detail::d32_not_11_significand_mask); + } + else + { + // Have to use the full combination field + bits_ |= (detail::d32_comb_11_mask | (reduced_coeff & detail::d32_11_significand_mask)); + big_combination = true; + } + + // If the exponent fits we do not need to use the combination field + const auto biased_exp {static_cast(exp + detail::bias)}; + if (biased_exp <= detail::d32_max_biased_exponent) + { + if (big_combination) + { + bits_ |= (biased_exp << detail::d32_11_exp_shift) & detail::d32_11_exp_mask; + } + else + { + bits_ |= (biased_exp << detail::d32_not_11_exp_shift) & detail::d32_not_11_exp_mask; + } + } + else + { + // If we can fit the extra exponent in the significand, then we can construct the value + // If we can't, the value is either 0 or infinity depending on the sign of exp + + if (coeff_digits == -1) + { + coeff_digits = detail::num_digits(reduced_coeff); + } + + const auto exp_delta {biased_exp - detail::d32_max_biased_exponent}; + const auto digit_delta {coeff_digits - static_cast(exp_delta)}; + if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision) + { + exp -= digit_delta; + reduced_coeff *= detail::pow10(static_cast(digit_delta)); + *this = decimal32_t(reduced_coeff, exp, sign); + } + else + { + bits_ = exp < 0 ? UINT32_C(0) : detail::d32_inf_mask; + } + } +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal32_t::decimal32_t(const T1 coeff, const T2 exp) noexcept : decimal32_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} + +#if defined(__GNUC__) && __GNUC__ >= 6 +# pragma GCC diagnostic pop +#endif + +constexpr decimal32_t::decimal32_t(const bool value) noexcept : decimal32_t(static_cast(value), 0, false) {} + +constexpr auto from_bits(const std::uint32_t bits) noexcept -> decimal32_t +{ + decimal32_t result; + result.bits_ = bits; + + return result; +} + +constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool +{ + return rhs.bits_ & detail::d32_sign_mask; +} + +constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_ & detail::d32_nan_mask) == detail::d32_nan_mask; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_ & detail::d32_snan_mask) == detail::d32_snan_mask; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return ((rhs.bits_ & detail::d32_nan_mask) == detail::d32_inf_mask); + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return ((rhs.bits_ & detail::d32_inf_mask) != detail::d32_inf_mask); + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check for de-normals + const auto sig {rhs.full_significand()}; + const auto exp {rhs.unbiased_exponent()}; + + if (exp <= detail::precision - 1) + { + return false; + } + + return (sig != 0) && isfinite(rhs); + #else + return rhs.full_significand() != 0; + #endif +} + +constexpr auto operator+(const decimal32_t rhs) noexcept -> decimal32_t +{ + return rhs; +} + +constexpr auto operator-(decimal32_t rhs) noexcept-> decimal32_t +{ + rhs.bits_ ^= detail::d32_sign_mask; + return rhs; +} + +// We use kahan summation here where applicable +// https://en.wikipedia.org/wiki/Kahan_summation_algorithm +// NOLINTNEXTLINE: If addition is actually subtraction than change operator and vice versa +constexpr auto operator+(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + auto lhs_components {lhs.to_components()}; + detail::normalize(lhs_components.sig, lhs_components.exp); + auto rhs_components {rhs.to_components()}; + detail::normalize(rhs_components.sig, rhs_components.exp); + + return detail::d32_add_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator+(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs)) + { + return lhs; + } + #endif + + // Make the significand type wide enough that it won't overflow during normalization + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + + // Now that the rhs has been normalized, it is guaranteed to fit into the decimal32_t significand type + const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; + + return detail::d32_add_impl(sig_lhs, exp_lhs, lhs.isneg(), + final_sig_rhs, exp_rhs, (rhs < 0)); +} + +template +constexpr auto operator+(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return rhs + lhs; +} + +constexpr auto decimal32_t::operator++() noexcept -> decimal32_t& +{ + constexpr decimal32_t one(1, 0); + *this = *this + one; + return *this; +} + +constexpr auto decimal32_t::operator++(int) noexcept -> decimal32_t +{ + return ++(*this); +} + +constexpr auto decimal32_t::operator+=(const decimal32_t rhs) noexcept -> decimal32_t& +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator+=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator+=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) +{ + *this = *this + rhs; + return *this; +} + +// NOLINTNEXTLINE: If subtraction is actually addition than use operator+ and vice versa +constexpr auto operator-(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + auto lhs_components {lhs.to_components()}; + detail::normalize(lhs_components.sig, lhs_components.exp); + auto rhs_components {rhs.to_components()}; + detail::normalize(rhs_components.sig, rhs_components.exp); + + // a - b = a + (-b) + rhs_components.sign = !rhs_components.sign; + return detail::d32_add_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator-(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + auto final_sig_rhs {static_cast(sig_rhs)}; + + return detail::d32_add_impl(sig_lhs, exp_lhs, lhs.isneg(), + final_sig_rhs, exp_rhs, !(rhs < 0)); +} + +template +constexpr auto operator-(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(rhs)) + { + return rhs; + } + #endif + + auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; + + exp_type exp_lhs {0}; + detail::normalize(sig_lhs, exp_lhs); + const auto final_sig_lhs {static_cast(sig_lhs)}; + + auto sig_rhs {rhs.full_significand()}; + auto exp_rhs {rhs.biased_exponent()}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d32_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), + sig_rhs, exp_rhs, !rhs.isneg()); +} + +constexpr auto decimal32_t::operator--() noexcept -> decimal32_t& +{ + constexpr decimal32_t one(1, 0); + *this = *this - one; + return *this; +} + +constexpr auto decimal32_t::operator--(int) noexcept -> decimal32_t +{ + return --(*this); +} + +constexpr auto decimal32_t::operator-=(const decimal32_t rhs) noexcept -> decimal32_t& +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator-=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator-=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) +{ + *this = *this - rhs; + return *this; +} + +constexpr auto operator==(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool +{ + return equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(rhs, lhs); +} + +constexpr auto operator!=(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +constexpr auto operator<(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + else if (isfinite(lhs) && isinf(rhs)) + { + return !rhs.isneg(); + } + } + #endif + + return sequential_less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !less_impl(rhs, lhs) && lhs != rhs; +} + +constexpr auto operator<=(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + if (isinf(lhs)) + { + return signbit(lhs); + } + if (isinf(rhs)) + { + return !signbit(rhs); + } + } + #endif + + return !sequential_less_impl(rhs, lhs); +} + +template +constexpr auto operator<=(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs)) + { + if (isnan(lhs)) + { + return false; + } + if (isinf(lhs)) + { + return signbit(lhs); + } + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(rhs)) + { + if (isnan(rhs)) + { + return false; + } + if (isinf(rhs)) + { + return !signbit(rhs); + } + } + #endif + + return !(rhs < lhs); +} + +constexpr auto operator>(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + if (isinf(lhs)) + { + return !signbit(lhs); + } + if (isinf(rhs)) + { + return signbit(rhs); + } + } + #endif + + return sequential_less_impl(rhs, lhs); +} + +template +constexpr auto operator>(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return rhs < lhs; +} + +template +constexpr auto operator>(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return rhs < lhs; +} + +constexpr auto operator>=(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !sequential_less_impl(lhs, rhs); +} + +template +constexpr auto operator>=(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator<=>(const decimal32_t lhs, const decimal32_t rhs) noexcept -> std::partial_ordering +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +#endif + +constexpr auto decimal32_t::unbiased_exponent() const noexcept -> exponent_type +{ + exponent_type expval {}; + + if ((bits_ & detail::d32_comb_11_mask) == detail::d32_comb_11_mask) + { + expval = (bits_ & detail::d32_11_exp_mask) >> detail::d32_11_exp_shift; + } + else + { + expval = (bits_ & detail::d32_not_11_exp_mask) >> detail::d32_not_11_exp_shift; + } + + return expval; +} + +constexpr auto decimal32_t::biased_exponent() const noexcept -> biased_exponent_type +{ + return static_cast(unbiased_exponent()) - detail::bias; +} + +template +constexpr auto decimal32_t::edit_exponent(T expval) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void) +{ + *this = decimal32_t(this->full_significand(), expval, this->isneg()); +} + +constexpr auto decimal32_t::full_significand() const noexcept -> significand_type +{ + significand_type significand {}; + + if ((bits_ & detail::d32_comb_11_mask) == detail::d32_comb_11_mask) + { + constexpr std::uint32_t implied_bit {UINT32_C(0b100000000000000000000000)}; + significand = implied_bit | (bits_ & detail::d32_11_significand_mask); + } + else + { + significand = bits_ & detail::d32_not_11_significand_mask; + } + + return significand; +} + +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4127) +#endif + +template +constexpr auto decimal32_t::edit_significand(const T sig) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void) +{ + const auto unsigned_sig {detail::make_positive_unsigned(sig)}; + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_signed_v) + { + *this = decimal32_t(unsigned_sig, this->biased_exponent(), this->isneg() || sig < 0); + } + else + { + *this = decimal32_t(unsigned_sig, this->biased_exponent(), this->isneg()); + } +} + +#ifdef _MSC_VER +# pragma warning(pop) +#endif + +constexpr auto decimal32_t::isneg() const noexcept -> bool +{ + return static_cast(bits_ & detail::d32_sign_mask); +} + +// Allows changing the sign even on nans and infs +constexpr auto decimal32_t::edit_sign(const bool sign) noexcept -> void +{ + if (sign) + { + bits_ |= detail::d32_sign_mask; + } + else + { + bits_ &= ~detail::d32_sign_mask; + } +} + +#if defined(__clang__) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wfloat-equal" +#elif defined(__GNUC__) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wfloat-equal" +#endif + +constexpr auto decimal32_t::to_components() const noexcept -> detail::decimal32_t_components +{ + detail::decimal32_t_components components {}; + + exponent_type expval {}; + significand_type significand {}; + + if ((bits_ & detail::d32_comb_11_mask) == detail::d32_comb_11_mask) + { + constexpr std::uint32_t implied_bit {UINT32_C(0b100000000000000000000000)}; + significand = implied_bit | (bits_ & detail::d32_11_significand_mask); + expval = (bits_ & detail::d32_11_exp_mask) >> detail::d32_11_exp_shift; + } + else + { + significand = bits_ & detail::d32_not_11_significand_mask; + expval = (bits_ & detail::d32_not_11_exp_mask) >> detail::d32_not_11_exp_shift; + } + + components.sig = significand; + components.exp = static_cast(expval) - detail::bias_v; + components.sign = bits_ & detail::d32_sign_mask; + + return components; +} + + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::decimal32_t(const Float val) noexcept +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val != val) + { + *this = boost::decimal::from_bits(boost::decimal::detail::d32_nan_mask); + } + else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) + { + *this = boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask); + } + else + #endif + { + const auto components {detail::ryu::floating_point_to_fd128(val)}; + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "Mant: " << components.mantissa + << "\nExp: " << components.exponent + << "\nSign: " << components.sign << std::endl; + #endif + + #ifndef BOOST_DECIMAL_FAST_MATH + if (components.exponent > detail::emax) + { + *this = boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask); + } + else + #endif + { + *this = decimal32_t {components.mantissa, components.exponent, components.sign}; + } + } +} + +#if defined(__clang__) +# pragma clang diagnostic pop +#elif defined(__GNUC__) +# pragma GCC diagnostic pop +#endif + +template +BOOST_DECIMAL_CXX20_CONSTEXPR auto decimal32_t::operator=(const Float& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal32_t&) +{ + *this = decimal32_t{val}; + return *this; +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal32_t::decimal32_t(const Decimal val) noexcept +{ + *this = to_decimal(val); +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal32_t::decimal32_t(const Integer val) noexcept : decimal32_t{val, 0}// NOLINT : Incorrect parameter is never used +{ +} + +template +constexpr auto decimal32_t::operator=(const Integer& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) +{ + using ConversionType = std::conditional_t::value, std::int32_t, Integer>; + *this = decimal32_t{static_cast(val), 0}; + return *this; +} + +constexpr decimal32_t::operator bool() const noexcept +{ + constexpr decimal32_t zero {0, 0}; + return *this != zero; +} + +constexpr decimal32_t::operator int() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal32_t::operator unsigned() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal32_t::operator long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal32_t::operator unsigned long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal32_t::operator long long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal32_t::operator unsigned long long() const noexcept +{ + return to_integral(*this); +} + +#ifdef BOOST_DECIMAL_HAS_INT128 + +constexpr decimal32_t::operator detail::builtin_int128_t() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal32_t::operator detail::builtin_uint128_t() const noexcept +{ + return to_integral(*this); +} + +#endif + +template , bool>> +constexpr decimal32_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR auto to_bits(const decimal32_t rhs) noexcept -> std::uint32_t +{ + const auto bits {detail::bit_cast(rhs.bits_)}; + return bits; +} + +constexpr auto operator*(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + const auto lhs_components {lhs.to_components()}; + const auto rhs_components {rhs.to_components()}; + + return detail::mul_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator*(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs)) + { + return lhs; + } + #endif + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + const auto final_sig_rhs {static_cast(sig_rhs)}; + + return detail::mul_impl(sig_lhs, exp_lhs, lhs.isneg(), + final_sig_rhs, exp_rhs, (rhs < 0)); +} + +template +constexpr auto operator*(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return rhs * lhs; +} + +constexpr auto decimal32_t::operator*=(const decimal32_t rhs) noexcept -> decimal32_t& +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator*=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator*=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) +{ + *this = *this * rhs; + return *this; +} + +constexpr auto div_impl(const decimal32_t lhs, const decimal32_t rhs, decimal32_t& q, decimal32_t& r) noexcept -> void +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal32_t zero {0, 0}; + constexpr decimal32_t nan {boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask)}; + constexpr decimal32_t inf {boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask)}; + + const bool sign {lhs.isneg() != rhs.isneg()}; + + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) + { + q = nan; + r = nan; + return; + } + + switch (lhs_fp) + { + case FP_INFINITE: + q = sign ? -inf : inf; + r = zero; + return; + case FP_ZERO: + q = sign ? -zero : zero; + r = sign ? -zero : zero; + return; + default: + static_cast(lhs); + } + + switch (rhs_fp) + { + case FP_ZERO: + q = inf; + r = zero; + return; + case FP_INFINITE: + q = sign ? -zero : zero; + r = lhs; + return; + default: + static_cast(rhs); + } + #else + static_cast(r); + #endif + + auto lhs_components {lhs.to_components()}; + detail::normalize(lhs_components.sig, lhs_components.exp); + + auto rhs_components {rhs.to_components()}; + detail::normalize(rhs_components.sig, rhs_components.exp); + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "sig lhs: " << sig_lhs + << "\nexp lhs: " << exp_lhs + << "\nsig rhs: " << sig_rhs + << "\nexp rhs: " << exp_rhs << std::endl; + #endif + + q = detail::generic_div_impl(lhs_components, rhs_components); +} + +constexpr auto mod_impl(const decimal32_t lhs, const decimal32_t rhs, const decimal32_t& q, decimal32_t& r) noexcept -> void +{ + constexpr decimal32_t zero {0, 0}; + + // https://en.cppreference.com/w/cpp/numeric/math/fmod + auto q_trunc {q > zero ? floor(q) : ceil(q)}; + r = lhs - (decimal32_t(q_trunc) * rhs); +} + +constexpr auto operator/(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + decimal32_t q {}; + decimal32_t r {}; + div_impl(lhs, rhs, q, r); + + return q; +} + +template +constexpr auto operator/(const decimal32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + using exp_type = decimal32_t::biased_exponent_type; + using sig_type = decimal32_t::significand_type; + using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal32_t zero {0, 0}; + constexpr decimal32_t nan {boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask)}; + constexpr decimal32_t inf {boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask)}; + + const bool sign {lhs.isneg() != (rhs < 0)}; + + const auto lhs_fp {fpclassify(lhs)}; + + switch (lhs_fp) + { + case FP_NAN: + return nan; + case FP_INFINITE: + return inf; + case FP_ZERO: + return sign ? -zero : zero; + default: + static_cast(lhs); + } + + if (rhs == 0) + { + return sign ? -inf : inf; + } + #endif + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + detail::decimal32_t_components lhs_components {sig_lhs, exp_lhs, lhs.isneg()}; + + exp_type exp_rhs {}; + auto unsigned_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + detail::normalize(unsigned_rhs, exp_rhs); + detail::decimal32_t_components rhs_components {static_cast(unsigned_rhs), exp_rhs, rhs < 0}; + + return detail::generic_div_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator/(Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + using exp_type = decimal32_t::biased_exponent_type; + using sig_type = decimal32_t::significand_type; + using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal32_t zero {0, 0}; + constexpr decimal32_t nan {boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask)}; + constexpr decimal32_t inf {boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask)}; + + const bool sign {(lhs < 0) != rhs.isneg()}; + + const auto rhs_fp {fpclassify(rhs)}; + + if (rhs_fp == FP_NAN) + { + return nan; + } + + switch (rhs_fp) + { + case FP_INFINITE: + return sign ? -zero : zero; + case FP_ZERO: + return sign ? -inf : inf; + default: + static_cast(lhs); + } + #endif + + auto sig_rhs {rhs.full_significand()}; + auto exp_rhs {rhs.biased_exponent()}; + detail::normalize(sig_rhs, exp_rhs); + + exp_type lhs_exp {}; + auto unsigned_lhs {static_cast(detail::make_positive_unsigned(lhs))}; + detail::normalize(unsigned_lhs, lhs_exp); + detail::decimal32_t_components lhs_components {static_cast(unsigned_lhs), lhs_exp, lhs < 0}; + detail::decimal32_t_components rhs_components {sig_rhs, exp_rhs, rhs.isneg()}; + + return detail::generic_div_impl(lhs_components, rhs_components); +} + +constexpr auto decimal32_t::operator/=(const decimal32_t rhs) noexcept -> decimal32_t& +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator/=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t&) +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal32_t::operator/=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal32_t&) +{ + *this = *this / rhs; + return *this; +} + +constexpr auto operator%(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + decimal32_t q {}; + decimal32_t r {}; + div_impl(lhs, rhs, q, r); + mod_impl(lhs, rhs, q, r); + + return r; +} + +constexpr auto decimal32_t::operator%=(const decimal32_t rhs) noexcept -> decimal32_t& +{ + *this = *this % rhs; + return *this; +} + +// LCOV_EXCL_START +inline auto debug_pattern(const decimal32_t rhs) noexcept -> void +{ + #if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) + std::cerr << "Sig: " << rhs.full_significand() + << "\nExp: " << rhs.biased_exponent() + << "\nNeg: " << rhs.isneg() << std::endl; + #else + static_cast(rhs); + #endif +} +// LCOV_EXCL_STOP + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator float() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator double() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator long double() const noexcept +{ + // Double already has more range and precision than a decimal32_t will ever be able to provide + return static_cast(to_float(*this)); +} + +#ifdef BOOST_DECIMAL_HAS_FLOAT16 +constexpr decimal32_t::operator std::float16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT32 +constexpr decimal32_t::operator std::float32_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT64 +constexpr decimal32_t::operator std::float64_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 +constexpr decimal32_t::operator std::bfloat16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif + +constexpr auto operator&(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + return from_bits(lhs.bits_ & rhs.bits_); +} + +template +constexpr auto operator&(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(lhs.bits_ & static_cast(rhs)); +} + +template +constexpr auto operator&(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(static_cast(lhs) & rhs.bits_); +} + +constexpr auto operator|(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + return from_bits(lhs.bits_ | rhs.bits_); +} + +template +constexpr auto operator|(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(lhs.bits_ | static_cast(rhs)); +} + +template +constexpr auto operator|(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(static_cast(lhs) | rhs.bits_); +} + +constexpr auto operator^(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + return from_bits(lhs.bits_ ^ rhs.bits_); +} + +template +constexpr auto operator^(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(lhs.bits_ ^ static_cast(rhs)); +} + +template +constexpr auto operator^(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(static_cast(lhs) ^ rhs.bits_); +} + +constexpr auto operator<<(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + return from_bits(lhs.bits_ << rhs.bits_); +} + +template +constexpr auto operator<<(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(lhs.bits_ << static_cast(rhs)); +} + +template +constexpr auto operator<<(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(static_cast(lhs) << rhs.bits_); +} + +constexpr auto operator>>(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + return from_bits(lhs.bits_ >> rhs.bits_); +} + +template +constexpr auto operator>>(const decimal32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(lhs.bits_ >> static_cast(rhs)); +} + +template +constexpr auto operator>>(const Integer lhs, const decimal32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal32_t) +{ + return from_bits(static_cast(lhs) >> rhs.bits_); +} + +constexpr auto operator~(const decimal32_t lhs) noexcept -> decimal32_t +{ + return from_bits(~lhs.bits_); +} + +// 3.6.4 +// Effects: determines if the quantum exponents of x and y are the same. +// If both x and y are NaN, or infinity, they have the same quantum exponents; +// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. +// The samequantum functions raise no exception. +constexpr auto samequantumd32(const decimal32_t lhs, const decimal32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) + { + return true; + } + if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) + { + return false; + } + #endif + + return lhs.unbiased_exponent() == rhs.unbiased_exponent(); +} + +// 3.6.5 +// Effects: if x is finite, returns its quantum exponent. +// Otherwise, a domain error occurs and INT_MIN is returned. +constexpr auto quantexpd32(const decimal32_t x) noexcept -> int +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(x)) + { + return INT_MIN; + } + #endif + + return static_cast(x.unbiased_exponent()); +} + +// 3.6.6 +// Returns: a number that is equal in value (except for any rounding) and sign to x, +// and which has an exponent set to be equal to the exponent of y. +// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; +// if the result does not have the same value as x, the "inexact" floating-point exception is raised. +// If the exponent is being decreased and the significand of the result has more digits than the type would allow, +// the "invalid" floating-point exception is raised and the result is NaN. +// If one or both operands are NaN the result is NaN. +// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. +// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. +// The quantize functions do not signal underflow. +constexpr auto quantized32(const decimal32_t lhs, const decimal32_t rhs) noexcept -> decimal32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Return the correct type of nan + if (isnan(lhs)) + { + return lhs; + } + if (isnan(rhs)) + { + return rhs; + } + + // If one is infinity then return a signaling NAN + if (isinf(lhs) != isinf(rhs)) + { + return from_bits(detail::d32_snan_mask); + } + if (isinf(lhs) && isinf(rhs)) + { + return lhs; + } + #endif + + return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; +} + +constexpr auto scalblnd32(decimal32_t num, const long exp) noexcept -> decimal32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + constexpr decimal32_t zero {0, 0}; + + if (num == zero || exp == 0 || !isfinite(num)) + { + return num; + } + #endif + + num.edit_exponent(num.biased_exponent() + exp); + + return num; +} + +constexpr auto scalbnd32(const decimal32_t num, const int expval) noexcept -> decimal32_t +{ + return scalblnd32(num, static_cast(expval)); +} + +constexpr auto copysignd32(decimal32_t mag, const decimal32_t sgn) noexcept -> decimal32_t +{ + mag.edit_sign(sgn.isneg()); + return mag; +} + +} // namespace decimal +} // namespace boost + +namespace std { + +template <> +#ifdef _MSC_VER +class numeric_limits +#else +struct numeric_limits +#endif +{ + +#ifdef _MSC_VER +public: +#endif + + static constexpr bool is_specialized = true; + static constexpr bool is_signed = true; + static constexpr bool is_integer = false; + static constexpr bool is_exact = false; + static constexpr bool has_infinity = true; + static constexpr bool has_quiet_NaN = true; + static constexpr bool has_signaling_NaN = true; + + // These members were deprecated in C++23 + #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) + static constexpr std::float_denorm_style has_denorm = std::denorm_present; + static constexpr bool has_denorm_loss = true; + #endif + + static constexpr std::float_round_style round_style = std::round_indeterminate; + static constexpr bool is_iec559 = true; + static constexpr bool is_bounded = true; + static constexpr bool is_modulo = false; + static constexpr int digits = 7; + static constexpr int digits10 = digits; + static constexpr int max_digits10 = digits; + static constexpr int radix = 10; + static constexpr int min_exponent = -95; + static constexpr int min_exponent10 = min_exponent; + static constexpr int max_exponent = 96; + static constexpr int max_exponent10 = max_exponent; + static constexpr bool traps = numeric_limits::traps; + static constexpr bool tinyness_before = true; + + // Member functions + static constexpr auto (min) () -> boost::decimal::decimal32_t { return {UINT32_C(1), min_exponent}; } + static constexpr auto (max) () -> boost::decimal::decimal32_t { return {boost::decimal::detail::d32_max_significand_value, max_exponent - digits + 1}; } + static constexpr auto lowest () -> boost::decimal::decimal32_t { return {boost::decimal::detail::d32_max_significand_value, max_exponent - digits + 1, true}; } + static constexpr auto epsilon () -> boost::decimal::decimal32_t { return {UINT32_C(1), -digits + 1}; } + static constexpr auto round_error () -> boost::decimal::decimal32_t { return epsilon(); } + static constexpr auto infinity () -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask); } + static constexpr auto quiet_NaN () -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_nan_mask); } + static constexpr auto signaling_NaN() -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask); } + static constexpr auto denorm_min () -> boost::decimal::decimal32_t { return {1, boost::decimal::detail::etiny}; } +}; + +} // Namespace std + +#endif // BOOST_DECIMAL_decimal32_t_HPP diff --git a/include/boost/decimal/decimal64.hpp b/include/boost/decimal/decimal64.hpp deleted file mode 100644 index 9f0d82857..000000000 --- a/include/boost/decimal/decimal64.hpp +++ /dev/null @@ -1,2073 +0,0 @@ -// Copyright 2023 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_decimal64_t_HPP -#define BOOST_DECIMAL_decimal64_t_HPP - -#include -#include -#include -#include -#include -#include "detail/int128.hpp" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef BOOST_DECIMAL_BUILD_MODULE - -#include -#include -#include -#include -#include -#include -#include -#include - -#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) -#include -#include -#endif - -#endif // BOOST_DECIMAL_BUILD_MODULE - -namespace boost { -namespace decimal { -namespace detail { - -// See IEEE 754 section 3.5.2 -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_inf_mask = UINT64_C(0x7800000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_nan_mask = UINT64_C(0x7C00000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_snan_mask = UINT64_C(0x7E00000000000000); - -// Comb. Exponent Significand -// s eeeeeeeeee [ttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt] -// s 11 eeeeeeeeee [100t][tttttttttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt] - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_sign_mask = UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_mask = UINT64_C(0b0'11'11111111'000'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_shift = UINT64_C(53); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_mask = UINT64_C(0b0'00'1111111111'0'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_shift = UINT64_C(51); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_significand_mask = UINT64_C(0b0'00'00000000'111'1111111111'1111111111'1111111111'1111111111'1111111111); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_significand_mask = UINT64_C(0b0'00'0000000000'1'1111111111'1111111111'1111111111'1111111111'1111111111); - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_biggest_no_combination_significand = d64_not_11_significand_mask; - -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_max_biased_exponent = UINT64_C(767); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_max_significand_value = UINT64_C(9'999'999'999'999'999); - - -template -constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - -template -constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - -template -constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -} //namespace detail - -#if defined(__GNUC__) && __GNUC__ >= 8 -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wclass-memaccess" -#endif - -BOOST_DECIMAL_EXPORT class decimal64_t final -{ -public: - using significand_type = std::uint64_t; - using exponent_type = std::uint64_t; - using biased_exponent_type = std::int32_t; - -private: - - std::uint64_t bits_ {}; - - // Returns the un-biased (quantum) exponent - constexpr auto unbiased_exponent() const noexcept -> exponent_type; - - // Returns the biased exponent - constexpr auto biased_exponent() const noexcept -> biased_exponent_type; - - // Allows direct editing of the exp - template - constexpr auto edit_exponent(T exp) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void); - - // Returns the significand complete with the bits implied from the combination field - constexpr auto full_significand() const noexcept -> significand_type; - constexpr auto isneg() const noexcept -> bool; - constexpr auto edit_sign(bool sign) noexcept -> void; - - constexpr auto to_components() const noexcept -> detail::decimal64_t_components; - - // Attempts conversion to integral type: - // If this is nan sets errno to EINVAL and returns 0 - // If this is not representable sets errno to ERANGE and returns 0 - template - friend constexpr auto to_integral(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); - - template - friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); - - template - friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; - - // Debug bit pattern - friend constexpr auto from_bits(std::uint64_t bits) noexcept -> decimal64_t; - friend constexpr auto to_bits(decimal64_t rhs) noexcept -> std::uint64_t; - - // Equality template between any integer type and decimal64_t - template - friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - // Template to compare operator< for any integer type and decimal64_t - template - friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - friend constexpr auto d64_div_impl(decimal64_t lhs, decimal64_t rhs, decimal64_t& q, decimal64_t& r) noexcept -> void; - - friend constexpr auto d64_mod_impl(decimal64_t lhs, decimal64_t rhs, const decimal64_t& q, decimal64_t& r) noexcept -> void; - - template - friend constexpr auto ilogb(T d) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); - - template - friend constexpr auto logb(T num) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); - - // Micro-optimization: Nearly every call to isfinite in the basic operators is !isfinite. - // We can super easily combine this into a single operation - friend constexpr auto not_finite(decimal64_t rhs) noexcept -> bool; - - template - friend constexpr auto equality_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; - - template - friend constexpr auto sequential_less_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; - - friend constexpr auto to_bid_d64(decimal64_t val) noexcept -> std::uint64_t; - - friend constexpr auto from_bid_d64(std::uint64_t bits) noexcept -> decimal64_t; - - template - friend constexpr auto to_dpd_d64(DecimalType val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint64_t); - - template - friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; - - template - friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -public: - // 3.2.3.1 construct/copy/destroy - constexpr decimal64_t() noexcept = default; - constexpr decimal64_t& operator=(const decimal64_t& rhs) noexcept = default; - constexpr decimal64_t& operator=(decimal64_t&& rhs) noexcept = default; - constexpr decimal64_t(const decimal64_t& rhs) noexcept = default; - constexpr decimal64_t(decimal64_t&& rhs) noexcept = default; - - // 3.2.2.2 Conversion form floating-point type - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS - explicit - #endif - BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t(Float val) noexcept; - - template - BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal64_t&); - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - explicit constexpr decimal64_t(Decimal val) noexcept; - - // 3.2.3.3 Conversion from integral type - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - constexpr decimal64_t(Integer val) noexcept; - - template - constexpr auto operator=(const Integer& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); - - // 3.2.3.4 Conversion to integral type - explicit constexpr operator bool() const noexcept; - explicit constexpr operator int() const noexcept; - explicit constexpr operator unsigned() const noexcept; - explicit constexpr operator long() const noexcept; - explicit constexpr operator unsigned long() const noexcept; - explicit constexpr operator long long() const noexcept; - explicit constexpr operator unsigned long long() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_INT128 - explicit constexpr operator detail::builtin_int128_t() const noexcept; - explicit constexpr operator detail::builtin_uint128_t() const noexcept; - #endif - - - // Conversion to another decimal type - template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> - constexpr operator Decimal() const noexcept; - - template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> - explicit constexpr operator Decimal() const noexcept; - - // 3.2.6 Conversion to a floating-point type - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_FLOAT16 - explicit constexpr operator std::float16_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT32 - explicit constexpr operator std::float32_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT64 - explicit constexpr operator std::float64_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 - explicit constexpr operator std::bfloat16_t() const noexcept; - #endif - - // 3.2.5 initialization from coefficient and exponent: - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal64_t(T1 coeff, T2 exp, bool sign = false) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal64_t(T1 coeff, T2 exp) noexcept; - - explicit constexpr decimal64_t(bool value) noexcept; - - // cmath functions that are easier as friends - friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; - friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; - friend constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; - friend constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; - friend constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; - friend constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; - - // 3.2.7 unary arithmetic operators: - friend constexpr auto operator+(decimal64_t rhs) noexcept -> decimal64_t; - friend constexpr auto operator-(decimal64_t rhs) noexcept -> decimal64_t; - - // 3.2.8 Binary arithmetic operators - friend constexpr auto operator+(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator+(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator+(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator-(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator-(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator-(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator*(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator*(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator*(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator/(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator/(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator/(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator%(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - // 3.2.3.5 Increment and Decrement - constexpr auto operator++() noexcept -> decimal64_t&; - constexpr auto operator++(int) noexcept -> decimal64_t; // NOLINT : C++14 so constexpr implies const - constexpr auto operator--() noexcept -> decimal64_t&; - constexpr auto operator--(int) noexcept -> decimal64_t; // NOLINT : C++14 so constexpr implies const - - // 3.2.3.6 Compound assignment - constexpr auto operator+=(decimal64_t rhs) noexcept -> decimal64_t&; - - template - constexpr auto operator+=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); - - template - constexpr auto operator+=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); - - constexpr auto operator-=(decimal64_t rhs) noexcept -> decimal64_t&; - - template - constexpr auto operator-=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); - - template - constexpr auto operator-=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); - - constexpr auto operator*=(decimal64_t rhs) noexcept -> decimal64_t&; - - template - constexpr auto operator*=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); - - template - constexpr auto operator*=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); - - constexpr auto operator/=(decimal64_t rhs) noexcept -> decimal64_t&; - - template - constexpr auto operator/=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); - - template - constexpr auto operator/=(Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); - - constexpr auto operator%=(decimal64_t rhs) noexcept -> decimal64_t&; - - // 3.2.9 Comparison operators: - // Equality - friend constexpr auto operator==(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; - - template - friend constexpr auto operator==(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator==(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Inequality - friend constexpr auto operator!=(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; - - template - friend constexpr auto operator!=(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Less - friend constexpr auto operator<(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; - - template - friend constexpr auto operator<(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Less equal - friend constexpr auto operator<=(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; - - template - friend constexpr auto operator<=(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Greater - friend constexpr auto operator>(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; - - template - friend constexpr auto operator>(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // Greater equal - friend constexpr auto operator>=(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; - - template - friend constexpr auto operator>=(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // C++20 spaceship - #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - friend constexpr auto operator<=>(decimal64_t lhs, decimal64_t rhs) noexcept -> std::partial_ordering; - - template - friend constexpr auto operator<=>(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - - template - friend constexpr auto operator<=>(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - #endif - - // 3.6.4 Same Quantum - friend constexpr auto samequantumd64(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; - - // 3.6.5 Quantum exponent - friend constexpr auto quantexpd64(decimal64_t x) noexcept -> int; - - // 3.6.6 Quantize - friend constexpr auto quantized64(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - // Bit-wise operators - friend constexpr auto operator&(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator&(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator&(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator|(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator|(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator|(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator^(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator^(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator^(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator<<(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator<<(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator<<(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator>>(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; - - template - friend constexpr auto operator>>(decimal64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - template - friend constexpr auto operator>>(Integer lhs, decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); - - friend constexpr auto operator~(decimal64_t lhs) noexcept -> decimal64_t; - - // functions that need to be friends - template - friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; - - friend constexpr auto copysignd64(decimal64_t mag, decimal64_t sgn) noexcept -> decimal64_t; - friend constexpr auto fmad64(decimal64_t x, decimal64_t y, decimal64_t z) noexcept -> decimal64_t; - friend constexpr auto scalbnd64(decimal64_t num, int exp) noexcept -> decimal64_t; - friend constexpr auto scalblnd64(decimal64_t num, long exp) noexcept -> decimal64_t; -}; - -BOOST_DECIMAL_EXPORT using decimal64 [[deprecated("Use re-named type decimal64_t instead of decimal64")]] = decimal64_t; - -#if defined(__GNUC__) && __GNUC__ >= 8 -# pragma GCC diagnostic pop -#endif - -constexpr auto from_bits(std::uint64_t bits) noexcept -> decimal64_t -{ - decimal64_t result; - result.bits_ = bits; - - return result; -} - -constexpr auto to_bits(decimal64_t rhs) noexcept -> std::uint64_t -{ - return rhs.bits_; -} - -#if defined(__GNUC__) && __GNUC__ >= 6 -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wduplicated-branches" -# pragma GCC diagnostic ignored "-Wbool-compare" -# pragma GCC diagnostic ignored "-Wconversion" -#endif - -// 3.2.5 initialization from coefficient and exponent: -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept -{ - bits_ = sign ? detail::d64_sign_mask : UINT64_C(0); - - // If the coeff is not in range, make it so - int coeff_digits {-1}; - if (coeff > detail::d64_max_significand_value) - { - coeff_digits = detail::d64_constructor_num_digits(coeff); - if (coeff_digits > detail::precision_v + 1) - { - const auto digits_to_remove {coeff_digits - (detail::precision_v + 1)}; - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif - - coeff /= detail::pow10(static_cast(digits_to_remove)); - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif - - coeff_digits -= digits_to_remove; - exp += detail::fenv_round(coeff, sign) + digits_to_remove; - } - else - { - exp += detail::fenv_round(coeff, sign); - } - } - - auto reduced_coeff {static_cast(coeff)}; - bool big_combination {false}; - - if (reduced_coeff == 0U) - { - // Normalize our handling of zeros - return; - } - - if (reduced_coeff <= detail::d64_biggest_no_combination_significand) - { - // If the coefficient fits directly, we don't need to use the combination field - // bits_.significand = reduced_coeff; - bits_ |= (reduced_coeff & detail::d64_not_11_significand_mask); - } - else - { - // Have to use the full combination field - bits_ |= (detail::d64_combination_field_mask | (reduced_coeff & detail::d64_11_significand_mask)); - big_combination = true; - } - - // If the exponent fits, we do not need to use the combination field - const auto biased_exp {static_cast(exp + detail::bias_v)}; - if (biased_exp <= detail::d64_max_biased_exponent) - { - if (big_combination) - { - bits_ |= (biased_exp << detail::d64_11_exp_shift) & detail::d64_11_exp_mask; - } - else - { - bits_ |= (biased_exp << detail::d64_not_11_exp_shift) & detail::d64_not_11_exp_mask; - } - } - else - { - // If we can fit the extra exponent in the significand, then we can construct the value - // If we can't, the value is either 0 or infinity depending on the sign of exp - - if (coeff_digits == -1) - { - coeff_digits = detail::num_digits(reduced_coeff); - } - - const auto exp_delta {biased_exp - detail::d64_max_biased_exponent}; - const auto digit_delta {coeff_digits - static_cast(exp_delta)}; - if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) - { - exp -= digit_delta; - reduced_coeff *= detail::pow10(static_cast(digit_delta)); - *this = decimal64_t(reduced_coeff, exp, sign); - } - else - { - bits_ = exp < 0 ? UINT64_C(0) : detail::d64_inf_mask; - } - } -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal64_t::decimal64_t(const T1 coeff, const T2 exp) noexcept : decimal64_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} - -constexpr decimal64_t::decimal64_t(const bool value) noexcept : decimal64_t(static_cast(value), 0, false) {} - - -#if defined(__GNUC__) && __GNUC__ >= 6 -# pragma GCC diagnostic pop -#endif - -#if defined(__clang__) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wfloat-equal" -#elif defined(__GNUC__) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wfloat-equal" -#endif - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::decimal64_t(const Float val) noexcept -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val != val) - { - *this = from_bits(detail::d64_nan_mask); - } - else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) - { - *this = from_bits(detail::d64_inf_mask); - } - else - #endif - { - const auto components {detail::ryu::floating_point_to_fd128(val)}; - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "Mant: " << components.mantissa - << "\nExp: " << components.exponent - << "\nSign: " << components.sign << std::endl; - #endif - - if (components.exponent > detail::emax_v) - { - *this = from_bits(detail::d64_inf_mask); - } - else - { - *this = decimal64_t {components.mantissa, components.exponent, components.sign}; - } - } -} - -#if defined(__clang__) -# pragma clang diagnostic pop -#elif defined(__GNUC__) -# pragma GCC diagnostic pop -#endif - -template -BOOST_DECIMAL_CXX20_CONSTEXPR auto decimal64_t::operator=(const Float& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal64_t&) -{ - *this = decimal64_t{val}; - return *this; -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal64_t::decimal64_t(const Decimal val) noexcept -{ - *this = to_decimal(val); -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal64_t::decimal64_t(const Integer val) noexcept : decimal64_t{val, 0} {} - -template -constexpr auto decimal64_t::operator=(const Integer& val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) -{ - using ConversionType = std::conditional_t::value, std::int32_t, Integer>; - *this = decimal64_t{static_cast(val), 0}; - return *this; -} - -constexpr decimal64_t::operator bool() const noexcept -{ - constexpr decimal64_t zero {0, 0}; - return *this != zero; -} - -constexpr decimal64_t::operator int() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal64_t::operator unsigned() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal64_t::operator long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal64_t::operator unsigned long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal64_t::operator long long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal64_t::operator unsigned long long() const noexcept -{ - return to_integral(*this); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 - -constexpr decimal64_t::operator detail::builtin_int128_t() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal64_t::operator detail::builtin_uint128_t() const noexcept -{ - return to_integral(*this); -} - -#endif - -template && (detail::decimal_val_v > detail::decimal_val_v), bool>> -constexpr decimal64_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> -constexpr decimal64_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator float() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator double() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator long double() const noexcept -{ - return to_float(*this); -} - -#ifdef BOOST_DECIMAL_HAS_FLOAT16 -constexpr decimal64_t::operator std::float16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT32 -constexpr decimal64_t::operator std::float32_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT64 -constexpr decimal64_t::operator std::float64_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 -constexpr decimal64_t::operator std::bfloat16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif - -constexpr auto decimal64_t::unbiased_exponent() const noexcept -> exponent_type -{ - exponent_type expval {}; - - if ((bits_ & detail::d64_combination_field_mask) == detail::d64_combination_field_mask) - { - expval = (bits_ & detail::d64_11_exp_mask) >> detail::d64_11_exp_shift; - } - else - { - expval = (bits_ & detail::d64_not_11_exp_mask) >> detail::d64_not_11_exp_shift; - } - - return expval; -} - -constexpr auto decimal64_t::biased_exponent() const noexcept -> biased_exponent_type -{ - return static_cast(unbiased_exponent()) - detail::bias_v; -} - -constexpr auto decimal64_t::full_significand() const noexcept -> significand_type -{ - significand_type significand {}; - - if ((bits_ & detail::d64_combination_field_mask) == detail::d64_combination_field_mask) - { - constexpr std::uint64_t implied_bit {UINT64_C(0b1000'0000000000'0000000000'0000000000'0000000000'0000000000)}; - significand = implied_bit | (bits_ & detail::d64_11_significand_mask); - } - else - { - significand = bits_ & detail::d64_not_11_significand_mask; - } - - return significand; -} - -constexpr auto decimal64_t::isneg() const noexcept -> bool -{ - return static_cast(bits_ & detail::d64_sign_mask); -} - -constexpr auto decimal64_t::to_components() const noexcept -> detail::decimal64_t_components -{ - detail::decimal64_t_components components {}; - - exponent_type expval {}; - significand_type significand {}; - - if ((bits_ & detail::d64_combination_field_mask) == detail::d64_combination_field_mask) - { - constexpr std::uint64_t implied_bit {UINT64_C(0b1000'0000000000'0000000000'0000000000'0000000000'0000000000)}; - significand = implied_bit | (bits_ & detail::d64_11_significand_mask); - expval = (bits_ & detail::d64_11_exp_mask) >> detail::d64_11_exp_shift; - } - else - { - significand = bits_ & detail::d64_not_11_significand_mask; - expval = (bits_ & detail::d64_not_11_exp_mask) >> detail::d64_not_11_exp_shift; - } - - components.sig = significand; - components.exp = static_cast(expval) - detail::bias_v; - components.sign = bits_ & detail::d64_sign_mask; - - return components; -} - -template -constexpr auto decimal64_t::edit_exponent(const T expval) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void) -{ - *this = decimal64_t(this->full_significand(), expval, this->isneg()); -} - -constexpr auto decimal64_t::edit_sign(const bool sign) noexcept -> void -{ - if (sign) - { - bits_ |= detail::d64_sign_mask; - } - else - { - bits_ &= ~detail::d64_sign_mask; - } -} - -constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool -{ - return rhs.bits_ & detail::d64_sign_mask; -} - -constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_ & detail::d64_nan_mask) == detail::d64_nan_mask; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return ((rhs.bits_ & detail::d64_nan_mask) == detail::d64_inf_mask); - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return (rhs.bits_ & detail::d64_snan_mask) == detail::d64_snan_mask; - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Check for de-normals - const auto sig {rhs.full_significand()}; - const auto exp {rhs.unbiased_exponent()}; - - if (exp <= detail::precision_v - 1) - { - return false; - } - - return (sig != 0) && isfinite(rhs); - #else - return rhs.full_significand() != 0; - #endif -} - -constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return ((rhs.bits_ & detail::d64_inf_mask) != detail::d64_inf_mask); - #else - static_cast(rhs); - return true; - #endif -} - -BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return ((rhs.bits_ & detail::d64_inf_mask) == detail::d64_inf_mask); - #else - static_cast(rhs); - return false; - #endif -} - -constexpr auto operator+(const decimal64_t rhs) noexcept -> decimal64_t -{ - return rhs; -} - -constexpr auto operator-(decimal64_t rhs) noexcept-> decimal64_t -{ - rhs.bits_ ^= detail::d64_sign_mask; - return rhs; -} - -constexpr auto d64_div_impl(const decimal64_t lhs, const decimal64_t rhs, decimal64_t& q, decimal64_t& r) noexcept -> void -{ - const bool sign {lhs.isneg() != rhs.isneg()}; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal64_t zero {0, 0}; - constexpr decimal64_t nan {boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask)}; - constexpr decimal64_t inf {boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask)}; - - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) - { - q = nan; - r = nan; - return; - } - - switch (lhs_fp) - { - case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; - return; - case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; - return; - default: - static_cast(lhs); - } - - switch (rhs_fp) - { - case FP_ZERO: - q = inf; - r = zero; - return; - case FP_INFINITE: - q = sign ? -zero : zero; - r = lhs; - return; - default: - static_cast(rhs); - } - - #else - static_cast(r); - #endif - - auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "sig lhs: " << sig_lhs - << "\nexp lhs: " << exp_lhs - << "\nsig rhs: " << sig_rhs - << "\nexp rhs: " << exp_rhs << std::endl; - #endif - - q = detail::d64_generic_div_impl(lhs_components, rhs.to_components(), sign); -} - -constexpr auto d64_mod_impl(const decimal64_t lhs, const decimal64_t rhs, const decimal64_t& q, decimal64_t& r) noexcept -> void -{ - constexpr decimal64_t zero {0, 0}; - - // https://en.cppreference.com/w/cpp/numeric/math/fmod - auto q_trunc {q > zero ? floor(q) : ceil(q)}; - r = lhs - (decimal64_t(q_trunc) * rhs); -} - -constexpr auto operator+(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); - auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); - - return detail::d64_add_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator+(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - const auto final_sig_rhs {static_cast(sig_rhs)}; - - return detail::d64_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator+(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return rhs + lhs; -} - -// NOLINTNEXTLINE: If subtraction is actually addition than use operator+ and vice versa -constexpr auto operator-(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); - auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); - rhs_components.sign = !rhs_components.sign; - - return detail::d64_add_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator-(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - const auto final_sig_rhs {static_cast(sig_rhs)}; - - return detail::d64_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, !(rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator-(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(rhs)) - { - return rhs; - } - #endif - - auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; - - exp_type exp_lhs {0}; - detail::normalize(sig_lhs, exp_lhs); - const auto final_sig_lhs {static_cast(detail::make_positive_unsigned(sig_lhs))}; - - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); - - return detail::d64_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), - sig_rhs, exp_rhs, !rhs.isneg(), - abs_lhs_bigger); -} - -constexpr auto operator*(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); - auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); - - return detail::d64_mul_impl(lhs_components, rhs_components); -} - -template -constexpr auto operator*(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto lhs_sig {lhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); - - auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; - exp_type rhs_exp {0}; - detail::normalize(rhs_sig, rhs_exp); - const auto final_rhs_sig {static_cast(rhs_sig)}; - - return detail::d64_mul_impl(lhs_sig, lhs_exp, lhs.isneg(), - final_rhs_sig, rhs_exp, (rhs < 0)); -} - -template -constexpr auto operator*(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return rhs * lhs; -} - -constexpr auto operator/(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - decimal64_t q {}; - decimal64_t r {}; - d64_div_impl(lhs, rhs, q, r); - - return q; -} - -template -constexpr auto operator/(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - using sig_type = decimal64_t::significand_type; - using exp_type = decimal64_t::biased_exponent_type; - using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; - - const bool sign {lhs.isneg() != (rhs < 0)}; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal64_t zero {0, 0}; - constexpr decimal64_t nan {boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask)}; - constexpr decimal64_t inf {boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask)}; - - const auto lhs_fp {fpclassify(lhs)}; - - switch (lhs_fp) - { - case FP_NAN: - return nan; - case FP_INFINITE: - return inf; - case FP_ZERO: - return sign ? -zero : zero; - default: - static_cast(lhs); - } - - if (rhs == 0) - { - return sign ? -inf : inf; - } - #endif - - auto lhs_sig {lhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); - detail::decimal64_t_components lhs_components {lhs_sig, lhs_exp, lhs.isneg()}; - - auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; - exp_type rhs_exp {}; - detail::normalize(rhs_sig, rhs_exp); - detail::decimal64_t_components rhs_components {static_cast(rhs_sig), rhs_exp, rhs < 0}; - - return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); -} - -template -constexpr auto operator/(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - using sig_type = decimal64_t::significand_type; - using exp_type = decimal64_t::biased_exponent_type; - using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; - - const bool sign {(lhs < 0) != rhs.isneg()}; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal64_t zero {0, 0}; - constexpr decimal64_t inf {boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask)}; - constexpr decimal64_t nan {boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask)}; - - const auto rhs_fp {fpclassify(rhs)}; - - if (rhs_fp == FP_NAN) - { - return nan; - } - - switch (rhs_fp) - { - case FP_INFINITE: - return sign ? -zero : zero; - case FP_ZERO: - return sign ? -inf : inf; - default: - static_cast(lhs); - } - #endif - - auto rhs_sig {rhs.full_significand()}; - auto rhs_exp {rhs.biased_exponent()}; - detail::normalize(rhs_sig, rhs_exp); - - exp_type lhs_exp {}; - auto lhs_sig {static_cast(detail::make_positive_unsigned(lhs))}; - detail::normalize(lhs_sig, lhs_exp); - detail::decimal64_t_components lhs_components {static_cast(lhs_sig), lhs_exp, lhs < 0}; - detail::decimal64_t_components rhs_components {rhs_sig, rhs_exp, rhs.isneg()}; - - return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); -} - -constexpr auto operator%(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - decimal64_t q {}; - decimal64_t r {}; - d64_div_impl(lhs, rhs, q, r); - d64_mod_impl(lhs, rhs, q, r); - - return r; -} - -constexpr auto decimal64_t::operator++() noexcept -> decimal64_t& -{ - constexpr decimal64_t one{1, 0}; - *this = *this + one; - return *this; -} - -constexpr auto decimal64_t::operator++(int) noexcept -> decimal64_t -{ - return ++(*this); -} - -constexpr auto decimal64_t::operator--() noexcept -> decimal64_t& -{ - constexpr decimal64_t one{1, 0}; - *this = *this - one; - return *this; -} - -constexpr auto decimal64_t::operator--(int) noexcept -> decimal64_t -{ - return --(*this); -} - -constexpr auto decimal64_t::operator+=(const decimal64_t rhs) noexcept -> decimal64_t& -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator+=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator+=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) -{ - *this = *this + rhs; - return *this; -} - -constexpr auto decimal64_t::operator-=(const decimal64_t rhs) noexcept -> decimal64_t& -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator-=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator-=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) -{ - *this = *this - rhs; - return *this; -} - -constexpr auto decimal64_t::operator*=(const decimal64_t rhs) noexcept -> decimal64_t& -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator*=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator*=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) -{ - *this = *this * rhs; - return *this; -} - -constexpr auto decimal64_t::operator/=(const decimal64_t rhs) noexcept -> decimal64_t& -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator/=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal64_t::operator/=(const Decimal rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) -{ - *this = *this / rhs; - return *this; -} - -constexpr auto decimal64_t::operator%=(const decimal64_t rhs) noexcept -> decimal64_t& -{ - *this = *this % rhs; - return *this; -} - -constexpr auto operator==(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - return equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(rhs, lhs); -} - -constexpr auto operator!=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -constexpr auto operator<(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - if (isnan(lhs) || isnan(rhs) || - (!lhs.isneg() && rhs.isneg())) - { - return false; - } - if (lhs.isneg() && !rhs.isneg()) - { - return true; - } - if (isfinite(lhs) && isinf(rhs)) - { - return !rhs.isneg(); - } - } - #endif - - return sequential_less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !less_impl(rhs, lhs) && lhs != rhs; -} - -constexpr auto operator<=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -constexpr auto operator>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -constexpr auto operator>=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator<=>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> std::partial_ordering -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -#endif - -constexpr auto operator&(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - return from_bits(lhs.bits_ & rhs.bits_); -} - -template -constexpr auto operator&(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(lhs.bits_ & static_cast(rhs)); -} - -template -constexpr auto operator&(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(static_cast(lhs) & rhs.bits_); -} - -constexpr auto operator|(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - return from_bits(lhs.bits_ | rhs.bits_); -} - -template -constexpr auto operator|(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(lhs.bits_ | static_cast(rhs)); -} - -template -constexpr auto operator|(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(static_cast(lhs) | rhs.bits_); -} - -constexpr auto operator^(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - return from_bits(lhs.bits_ ^ rhs.bits_); -} - -template -constexpr auto operator^(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(lhs.bits_ ^ static_cast(rhs)); -} - -template -constexpr auto operator^(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(static_cast(lhs) ^ rhs.bits_); -} - -constexpr auto operator<<(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - return from_bits(lhs.bits_ << rhs.bits_); -} - -template -constexpr auto operator<<(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(lhs.bits_ << static_cast(rhs)); -} - -template -constexpr auto operator<<(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(static_cast(lhs) << rhs.bits_); -} - -constexpr auto operator>>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - return from_bits(lhs.bits_ >> rhs.bits_); -} - -template -constexpr auto operator>>(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(lhs.bits_ >> static_cast(rhs)); -} - -template -constexpr auto operator>>(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) -{ - return from_bits(static_cast(lhs) >> rhs.bits_); -} - -constexpr auto operator~(decimal64_t lhs) noexcept -> decimal64_t -{ - return from_bits(~lhs.bits_); -} - -// 3.6.4 -// Effects: determines if the quantum exponents of x and y are the same. -// If both x and y are NaN, or infinity, they have the same quantum exponents; -// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. -// The samequantum functions raise no exception. -constexpr auto samequantumd64(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) - { - return true; - } - if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) - { - return false; - } - #endif - - return lhs.unbiased_exponent() == rhs.unbiased_exponent(); -} - -// 3.6.5 -// Effects: if x is finite, returns its quantum exponent. -// Otherwise, a domain error occurs and INT_MIN is returned. -constexpr auto quantexpd64(const decimal64_t x) noexcept -> int -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(x)) - { - return INT_MIN; - } - #endif - - return static_cast(x.unbiased_exponent()); -} - -// 3.6.6 -// Returns: a number that is equal in value (except for any rounding) and sign to x, -// and which has an exponent set to be equal to the exponent of y. -// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; -// if the result does not have the same value as x, the "inexact" floating-point exception is raised. -// If the exponent is being decreased and the significand of the result has more digits than the type would allow, -// the "invalid" floating-point exception is raised and the result is NaN. -// If one or both operands are NaN the result is NaN. -// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. -// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. -// The quantize functions do not signal underflow. -constexpr auto quantized64(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - // Return the correct type of nan - if (isnan(lhs)) - { - return lhs; - } - if (isnan(rhs)) - { - return rhs; - } - - // If one is infinity then return a signaling NAN - if (isinf(lhs) != isinf(rhs)) - { - return boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask); - } - if (isinf(lhs) && isinf(rhs)) - { - return lhs; - } - #endif - - return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; -} - -constexpr auto scalblnd64(decimal64_t num, const long exp) noexcept -> decimal64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - constexpr decimal64_t zero {0, 0}; - - if (num == zero || exp == 0 || not_finite(num)) - { - return num; - } - #endif - - num.edit_exponent(num.biased_exponent() + exp); - - return num; -} - -constexpr auto scalbnd64(const decimal64_t num, const int expval) noexcept -> decimal64_t -{ - return scalblnd64(num, static_cast(expval)); -} - -constexpr auto copysignd64(decimal64_t mag, const decimal64_t sgn) noexcept -> decimal64_t -{ - mag.edit_sign(sgn.isneg()); - return mag; -} - -} //namespace decimal -} //namespace boost - -namespace std { - -template <> -#ifdef _MSC_VER -class numeric_limits -#else -struct numeric_limits -#endif -{ - -#ifdef _MSC_VER - public: -#endif - - static constexpr bool is_specialized = true; - static constexpr bool is_signed = true; - static constexpr bool is_integer = false; - static constexpr bool is_exact = false; - static constexpr bool has_infinity = true; - static constexpr bool has_quiet_NaN = true; - static constexpr bool has_signaling_NaN = true; - - // These members were deprecated in C++23 - #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) - static constexpr std::float_denorm_style has_denorm = std::denorm_present; - static constexpr bool has_denorm_loss = true; - #endif - - static constexpr std::float_round_style round_style = std::round_indeterminate; - static constexpr bool is_iec559 = true; - static constexpr bool is_bounded = true; - static constexpr bool is_modulo = false; - static constexpr int digits = 16; - static constexpr int digits10 = digits; - static constexpr int max_digits10 = digits; - static constexpr int radix = 10; - static constexpr int min_exponent = -383; - static constexpr int min_exponent10 = min_exponent; - static constexpr int max_exponent = 384; - static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; - static constexpr bool tinyness_before = true; - - // Member functions - static constexpr auto (min) () -> boost::decimal::decimal64_t { return {UINT32_C(1), min_exponent}; } - static constexpr auto (max) () -> boost::decimal::decimal64_t { return {boost::decimal::detail::d64_max_significand_value, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal64_t { return {boost::decimal::detail::d64_max_significand_value, max_exponent - digits + 1, true}; } - static constexpr auto epsilon () -> boost::decimal::decimal64_t { return {UINT32_C(1), -digits + 1}; } - static constexpr auto round_error () -> boost::decimal::decimal64_t { return epsilon(); } - static constexpr auto infinity () -> boost::decimal::decimal64_t { return boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask); } - static constexpr auto quiet_NaN () -> boost::decimal::decimal64_t { return boost::decimal::from_bits(boost::decimal::detail::d64_nan_mask); } - static constexpr auto signaling_NaN() -> boost::decimal::decimal64_t { return boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask); } - static constexpr auto denorm_min () -> boost::decimal::decimal64_t { return {1, boost::decimal::detail::etiny_v}; } -}; - -} // Namespace std - -#endif //BOOST_DECIMAL_decimal64_t_HPP diff --git a/include/boost/decimal/decimal64_fast.hpp b/include/boost/decimal/decimal64_fast.hpp deleted file mode 100644 index 483cc3966..000000000 --- a/include/boost/decimal/decimal64_fast.hpp +++ /dev/null @@ -1,1406 +0,0 @@ -// Copyright 2023 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_decimal_fast64_t_HPP -#define BOOST_DECIMAL_decimal_fast64_t_HPP - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef BOOST_DECIMAL_BUILD_MODULE - -#include -#include - -#endif - -namespace boost { -namespace decimal { - -namespace detail { - -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_inf = std::numeric_limits::max() - 3; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_qnan = std::numeric_limits::max() - 2; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_snan = std::numeric_limits::max() - 1; - -} // namespace detail - -BOOST_DECIMAL_EXPORT class decimal_fast64_t final -{ -public: - using significand_type = std::uint64_t; - using exponent_type = std::uint16_t; - using biased_exponent_type = std::int32_t; - -private: - // In regular decimal64_t we have to decode the significand end exponent - // Here we will store them directly to avoid the overhead of decoding - - significand_type significand_ {}; - exponent_type exponent_ {}; - bool sign_ {}; - - constexpr auto isneg() const noexcept -> bool - { - return sign_; - } - - constexpr auto full_significand() const noexcept -> significand_type - { - return significand_; - } - - constexpr auto unbiased_exponent() const noexcept -> exponent_type - { - return exponent_; - } - - constexpr auto biased_exponent() const noexcept -> biased_exponent_type - { - return static_cast(exponent_) - detail::bias_v; - } - - constexpr auto to_components() const noexcept -> detail::decimal_fast64_t_components - { - return {full_significand(), biased_exponent(), isneg()}; - } - - // Equality template between any integer type and decimal32_t - template - friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - // Template to compare operator< for any integer type and decimal32_t - template - friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; - - template - friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept - -> std::enable_if_t<(detail::is_decimal_floating_point_v && - detail::is_decimal_floating_point_v), bool>; - - template - friend constexpr auto to_integral(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); - - template - friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept - BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); - - template - friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; - - friend constexpr auto d64_fast_div_impl(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs, decimal_fast64_t& q, decimal_fast64_t& r) noexcept -> void; - - template - friend constexpr auto ilogb(T d) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); - - template - friend constexpr auto logb(T num) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); - - friend constexpr auto not_finite(decimal_fast64_t val) noexcept -> bool; - - template - friend constexpr auto to_dpd_d64(DecimalType val) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint64_t); - - template - friend constexpr auto detail::d64_mul_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_inequality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_equal_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; - - template - friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; - - template - friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - -public: - constexpr decimal_fast64_t() noexcept = default; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal_fast64_t(T1 coeff, T2 exp, bool sign = false) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template && detail::is_integral_v, bool> = true> - #endif - constexpr decimal_fast64_t(T1 coeff, T2 exp) noexcept; - - explicit constexpr decimal_fast64_t(bool value) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - constexpr decimal_fast64_t(Integer val) noexcept; - - #ifdef BOOST_DECIMAL_HAS_CONCEPTS - template - #else - template , bool> = true> - #endif - explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t(Float val) noexcept; - - friend constexpr auto direct_init_d64(decimal_fast64_t::significand_type significand, decimal_fast64_t::exponent_type exponent, bool sign) noexcept -> decimal_fast64_t; - - // Classification functions - friend constexpr auto signbit(decimal_fast64_t val) noexcept -> bool; - friend constexpr auto isinf(decimal_fast64_t val) noexcept -> bool; - friend constexpr auto isnan(decimal_fast64_t val) noexcept -> bool; - friend constexpr auto issignaling(decimal_fast64_t val) noexcept -> bool; - friend constexpr auto isnormal(decimal_fast64_t val) noexcept -> bool; - friend constexpr auto isfinite(decimal_fast64_t val) noexcept -> bool; - - // Comparison operator - friend constexpr auto operator==(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; - friend constexpr auto operator!=(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; - friend constexpr auto operator<(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; - friend constexpr auto operator<=(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; - friend constexpr auto operator>(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; - friend constexpr auto operator>=(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; - - // Mixed type comparison operators - template - friend constexpr auto operator==(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator==(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator!=(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator<=(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - template - friend constexpr auto operator>=(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); - - // C++20 Spaceship operator - #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - friend constexpr auto operator<=>(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> std::partial_ordering; - - template - friend constexpr auto operator<=>(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - - template - friend constexpr auto operator<=>(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); - #endif - - // Conversions - explicit constexpr operator bool() const noexcept; - explicit constexpr operator int() const noexcept; - explicit constexpr operator unsigned() const noexcept; - explicit constexpr operator long() const noexcept; - explicit constexpr operator unsigned long() const noexcept; - explicit constexpr operator long long() const noexcept; - explicit constexpr operator unsigned long long() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_INT128 - explicit constexpr operator detail::builtin_int128_t() const noexcept; - explicit constexpr operator detail::builtin_uint128_t() const noexcept; - #endif - - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; - explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; - - #ifdef BOOST_DECIMAL_HAS_FLOAT16 - explicit constexpr operator std::float16_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT32 - explicit constexpr operator std::float32_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT64 - explicit constexpr operator std::float64_t() const noexcept; - #endif - #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 - explicit constexpr operator std::bfloat16_t() const noexcept; - #endif - - // Conversion to other decimal type - template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> - constexpr operator Decimal() const noexcept; - - template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> - explicit constexpr operator Decimal() const noexcept; - - // Unary Operators - friend constexpr auto operator+(decimal_fast64_t val) noexcept -> decimal_fast64_t; - friend constexpr auto operator-(decimal_fast64_t val) noexcept -> decimal_fast64_t; - - // Basic arithmetic operators - friend constexpr auto operator+(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; - friend constexpr auto operator-(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; - friend constexpr auto operator*(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; - friend constexpr auto operator/(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs) noexcept -> decimal_fast64_t; - friend constexpr auto operator%(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; - - // Mixed type arithmetic operators - template - friend constexpr auto operator+(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - template - friend constexpr auto operator+(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - template - friend constexpr auto operator-(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - template - friend constexpr auto operator-(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - template - friend constexpr auto operator*(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - template - friend constexpr auto operator*(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - template - friend constexpr auto operator/(decimal_fast64_t lhs, Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - template - friend constexpr auto operator/(Integer lhs, decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); - - // Compound Operators - constexpr auto operator+=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; - constexpr auto operator-=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; - constexpr auto operator*=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; - constexpr auto operator/=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; - - // Mixed type compound operators - template - constexpr auto operator+=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); - - template - constexpr auto operator-=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); - - template - constexpr auto operator*=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); - - template - constexpr auto operator/=(Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); - - // Increment and decrement - constexpr auto operator++() noexcept -> decimal_fast64_t&; - constexpr auto operator++(int) noexcept -> decimal_fast64_t&; - constexpr auto operator--() noexcept -> decimal_fast64_t&; - constexpr auto operator--(int) noexcept -> decimal_fast64_t&; - - // Cmath friend functions - template - friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; - - friend constexpr auto copysignd64f(decimal_fast64_t mag, decimal_fast64_t sgn) noexcept -> decimal_fast64_t; - friend constexpr auto fmad64f(decimal_fast64_t x, decimal_fast64_t y, decimal_fast64_t z) noexcept -> decimal_fast64_t; - friend constexpr auto scalbnd64f(decimal_fast64_t num, int exp) noexcept -> decimal_fast64_t; - friend constexpr auto scalblnd64f(decimal_fast64_t num, long exp) noexcept -> decimal_fast64_t; -}; - -BOOST_DECIMAL_EXPORT using decimal64_fast [[deprecated("Use re-named type decimal_fast64_t instead of decimal64_fast")]] = decimal_fast64_t; - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal_fast64_t::decimal_fast64_t(T1 coeff, T2 exp, bool sign) noexcept -{ - using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; - - minimum_coefficient_size min_coeff {coeff}; - - sign_ = sign; - - // Normalize the value, so we don't have to worry about it with operations - detail::normalize(min_coeff, exp, sign); - - significand_ = static_cast(min_coeff); - - const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias_v}; - - if (biased_exp > detail::max_biased_exp_v) - { - significand_ = detail::d64_fast_inf; - } - else if (biased_exp >= 0) - { - exponent_ = static_cast(biased_exp); - } - else - { - // Flush denorms to zero - significand_ = static_cast(0); - exponent_ = static_cast(detail::bias_v); - sign_ = false; - } -} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template && detail::is_integral_v, bool>> -#endif -constexpr decimal_fast64_t::decimal_fast64_t(const T1 coeff, const T2 exp) noexcept : decimal_fast64_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} - -constexpr decimal_fast64_t::decimal_fast64_t(const bool value) noexcept : decimal_fast64_t(static_cast(value), 0, false) {} - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -constexpr decimal_fast64_t::decimal_fast64_t(const Integer val) noexcept : decimal_fast64_t{val, 0} {} - -#if defined(__clang__) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wfloat-equal" -#elif defined(__GNUC__) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wfloat-equal" -#endif - -#ifdef BOOST_DECIMAL_HAS_CONCEPTS -template -#else -template , bool>> -#endif -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::decimal_fast64_t(const Float val) noexcept -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val != val) - { - significand_ = detail::d64_fast_qnan; - } - else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) - { - significand_ = detail::d64_fast_inf; - } - else - #endif - { - const auto components {detail::ryu::floating_point_to_fd128(val)}; - *this = decimal_fast64_t {components.mantissa, components.exponent, components.sign}; - } -} - -#if defined(__clang__) -# pragma clang diagnostic pop -#elif defined(__GNUC__) -# pragma GCC diagnostic pop -#endif - -constexpr auto direct_init_d64(const decimal_fast64_t::significand_type significand, - const decimal_fast64_t::exponent_type exponent, - const bool sign) noexcept -> decimal_fast64_t -{ - decimal_fast64_t val {}; - val.significand_ = significand; - val.exponent_ = exponent; - val.sign_ = sign; - - return val; -} - -constexpr auto signbit(const decimal_fast64_t val) noexcept -> bool -{ - return val.sign_; -} - -constexpr auto isinf(const decimal_fast64_t val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ == detail::d64_fast_inf; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto isnan(const decimal_fast64_t val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ >= detail::d64_fast_qnan; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto issignaling(const decimal_fast64_t val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ == detail::d64_fast_snan; - #else - static_cast(val); - return false; - #endif -} - -constexpr auto isnormal(const decimal_fast64_t val) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (val.exponent_ <= static_cast(detail::precision_v - 1)) - { - return false; - } - - return (val.significand_ != 0) && isfinite(val); - #else - return val.significand_ != 0; - #endif -} - -constexpr auto isfinite(const decimal_fast64_t val) noexcept -> bool -{ - return val.significand_ < detail::d64_fast_inf; -} - -BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal_fast64_t val) noexcept -> bool -{ - return val.significand_ >= detail::d64_fast_inf; -} - -constexpr auto operator==(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool -{ - return fast_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(rhs, lhs); -} - -constexpr auto operator!=(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool -{ - return fast_inequality_impl(lhs, rhs); -} - -template -constexpr auto operator!=(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -constexpr auto operator<(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool -{ - return fast_less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !less_impl(rhs, lhs) && lhs != rhs; -} - -constexpr auto operator<=(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -constexpr auto operator>(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -constexpr auto operator>=(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator<=>(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> std::partial_ordering -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -#endif // BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator+(const decimal_fast64_t val) noexcept -> decimal_fast64_t -{ - return val; -} - -constexpr auto operator-(decimal_fast64_t val) noexcept -> decimal_fast64_t -{ - val.sign_ = !val.sign_; - return val; -} - -constexpr decimal_fast64_t::operator bool() const noexcept -{ - constexpr decimal_fast64_t zero {0, 0}; - return *this != zero; -} - -constexpr decimal_fast64_t::operator int() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast64_t::operator unsigned() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast64_t::operator long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast64_t::operator unsigned long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast64_t::operator long long() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast64_t::operator unsigned long long() const noexcept -{ - return to_integral(*this); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 - -constexpr decimal_fast64_t::operator detail::builtin_int128_t() const noexcept -{ - return to_integral(*this); -} - -constexpr decimal_fast64_t::operator detail::builtin_uint128_t() const noexcept -{ - return to_integral(*this); -} - -#endif // BOOST_DECIMAL_HAS_INT128 - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator float() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator double() const noexcept -{ - return to_float(*this); -} - -BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator long double() const noexcept -{ - return to_float(*this); -} - -#ifdef BOOST_DECIMAL_HAS_FLOAT16 -constexpr decimal_fast64_t::operator std::float16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT32 -constexpr decimal_fast64_t::operator std::float32_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_FLOAT64 -constexpr decimal_fast64_t::operator std::float64_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif -#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 -constexpr decimal_fast64_t::operator std::bfloat16_t() const noexcept -{ - return static_cast(to_float(*this)); -} -#endif - -template && (detail::decimal_val_v > detail::decimal_val_v), bool>> -constexpr decimal_fast64_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> -constexpr decimal_fast64_t::operator Decimal() const noexcept -{ - return to_decimal(*this); -} - -constexpr auto operator+(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - return detail::d64_add_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), rhs.sign_, - (abs(lhs) > abs(rhs))); -} - -template -constexpr auto operator+(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - const auto final_sig_rhs {static_cast(sig_rhs)}; - - return detail::d64_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator+(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - return rhs + lhs; -} - -constexpr auto operator-(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - return detail::d64_add_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), !rhs.sign_, - abs(lhs) > abs(rhs) - ); -} - -template -constexpr auto operator-(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > detail::make_positive_unsigned(rhs)}; - - exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); - const auto final_sig_rhs {static_cast(sig_rhs)}; - - return detail::d64_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, !(rhs < 0), - abs_lhs_bigger); -} - -template -constexpr auto operator-(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(rhs)) - { - return rhs; - } - #endif - - auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; - - exp_type exp_lhs {0}; - detail::normalize(sig_lhs, exp_lhs); - const auto final_sig_lhs {static_cast(sig_lhs)}; - - return detail::d64_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), - rhs.significand_, rhs.biased_exponent(), !rhs.sign_, - abs_lhs_bigger); -} - -constexpr auto operator*(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - return detail::check_non_finite(lhs, rhs); - } - #endif - - return detail::d64_mul_impl(lhs, rhs); -} - -template -constexpr auto operator*(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = decimal_fast64_t::biased_exponent_type; - - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs)) - { - return lhs; - } - #endif - - auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; - exp_type rhs_exp {0}; - detail::normalize(rhs_sig, rhs_exp); - auto final_rhs_sig {static_cast(rhs_sig)}; - - return detail::d64_mul_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_rhs_sig, rhs_exp, (rhs < 0) - ); -} - -template -constexpr auto operator*(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - return rhs * lhs; -} - -constexpr auto d64_fast_div_impl(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs, decimal_fast64_t& q, decimal_fast64_t& r) noexcept -> void -{ - const bool sign {lhs.isneg() != rhs.isneg()}; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast64_t zero {0, 0}; - constexpr decimal_fast64_t nan {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_snan, 0, false)}; - constexpr decimal_fast64_t inf {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_inf, 0, false)}; - - const auto lhs_fp {fpclassify(lhs)}; - const auto rhs_fp {fpclassify(rhs)}; - - if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) - { - q = nan; - r = nan; - return; - } - - switch (lhs_fp) - { - case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; - return; - case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; - return; - default: - static_cast(lhs); - } - - switch (rhs_fp) - { - case FP_ZERO: - q = inf; - r = zero; - return; - case FP_INFINITE: - q = sign ? -zero : zero; - r = lhs; - return; - default: - static_cast(rhs); - } - #else - static_cast(r); - #endif - - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "sig lhs: " << sig_lhs - << "\nexp lhs: " << exp_lhs - << "\nsig rhs: " << sig_rhs - << "\nexp rhs: " << exp_rhs << std::endl; - #endif - - using unsigned_int128_type = boost::int128::uint128_t; - - // If rhs is greater than we need to offset the significands to get the correct values - // e.g. 4/8 is 0 but 40/8 yields 5 in integer maths - constexpr auto tens_needed {detail::pow10(static_cast(detail::precision_v))}; - const auto big_sig_lhs {static_cast(lhs.significand_) * tens_needed}; - - const auto res_sig {big_sig_lhs / static_cast(rhs.significand_)}; - const auto res_exp {(lhs.biased_exponent() - detail::precision_v) - rhs.biased_exponent()}; - - BOOST_DECIMAL_ASSERT(res_sig <= std::numeric_limits::max()); - - q = decimal_fast64_t{static_cast(res_sig), res_exp, sign}; -} - -constexpr auto d64_fast_mod_impl(const decimal_fast64_t lhs, const decimal_fast64_t rhs, const decimal_fast64_t& q, decimal_fast64_t& r) noexcept -> void -{ - constexpr decimal_fast64_t zero {0, 0}; - - // https://en.cppreference.com/w/cpp/numeric/math/fmod - auto q_trunc {q > zero ? floor(q) : ceil(q)}; - r = lhs - (decimal_fast64_t(q_trunc) * rhs); -} - -constexpr auto operator/(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs) noexcept -> decimal_fast64_t -{ - decimal_fast64_t q {}; - decimal_fast64_t r {}; - - d64_fast_div_impl(lhs, rhs, q, r); - - return q; -} - -template -constexpr auto operator/(const decimal_fast64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = detail::decimal_fast64_t_components::biased_exponent_type; - - const bool sign {lhs.isneg() != (rhs < 0)}; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast64_t zero {0, 0}; - constexpr decimal_fast64_t nan {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_snan, 0, false)}; - constexpr decimal_fast64_t inf {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_inf, 0, false)}; - - const auto lhs_fp {fpclassify(lhs)}; - - switch (lhs_fp) - { - case FP_NAN: - return nan; - case FP_INFINITE: - return inf; - case FP_ZERO: - return sign ? -zero : zero; - default: - static_cast(lhs); - } - - if (rhs == 0) - { - return sign ? -inf : inf; - } - #endif - - const detail::decimal_fast64_t_components lhs_components {lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()}; - - auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; - exp_type rhs_exp {}; - detail::decimal_fast64_t_components rhs_components {detail::shrink_significand(rhs_sig, rhs_exp), rhs_exp, rhs < 0}; - - return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); -} - -template -constexpr auto operator/(const Integer lhs, const decimal_fast64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) -{ - using promoted_significand_type = detail::promote_significand_t; - using exp_type = detail::decimal_fast64_t_components::biased_exponent_type; - - const bool sign {(lhs < 0) != rhs.isneg()}; - - #ifndef BOOST_DECIMAL_FAST_MATH - // Check pre-conditions - constexpr decimal_fast64_t zero {0, 0}; - constexpr decimal_fast64_t nan {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_snan, 0, false)}; - constexpr decimal_fast64_t inf {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_inf, 0, false)}; - - const auto rhs_fp {fpclassify(rhs)}; - - switch (rhs_fp) - { - case FP_NAN: - return nan; - case FP_INFINITE: - return sign ? -zero : zero; - case FP_ZERO: - return sign ? -inf : inf; - default: - static_cast(lhs); - } - #endif - - const detail::decimal_fast64_t_components rhs_components {rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; - - auto lhs_sig {static_cast(detail::make_positive_unsigned(lhs))}; - exp_type lhs_exp {}; - const detail::decimal_fast64_t_components lhs_components {detail::shrink_significand(lhs_sig, lhs_exp), lhs_exp, lhs < 0}; - - return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); -} - -constexpr auto operator%(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t -{ - decimal_fast64_t q {}; - decimal_fast64_t r {}; - d64_fast_div_impl(lhs, rhs, q, r); - d64_fast_mod_impl(lhs, rhs, q, r); - - return r; -} - -constexpr auto decimal_fast64_t::operator+=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & -{ - *this = *this + rhs; - return *this; -} - -constexpr auto decimal_fast64_t::operator-=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & -{ - *this = *this - rhs; - return *this; -} - -constexpr auto decimal_fast64_t::operator*=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & -{ - *this = *this * rhs; - return *this; -} - -constexpr auto decimal_fast64_t::operator/=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & -{ - *this = *this / rhs; - return *this; -} - -template -constexpr auto decimal_fast64_t::operator+=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) -{ - *this = *this + rhs; - return *this; -} - -template -constexpr auto decimal_fast64_t::operator-=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) -{ - *this = *this - rhs; - return *this; -} - -template -constexpr auto decimal_fast64_t::operator*=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) -{ - *this = *this * rhs; - return *this; -} - -template -constexpr auto decimal_fast64_t::operator/=(const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) -{ - *this = *this / rhs; - return *this; -} - -constexpr auto decimal_fast64_t::operator++() noexcept -> decimal_fast64_t& -{ - constexpr decimal_fast64_t one {1, 0}; - *this = *this + one; - return *this; -} - -constexpr auto decimal_fast64_t::operator++(int) noexcept -> decimal_fast64_t& -{ - return ++(*this); -} - -constexpr auto decimal_fast64_t::operator--() noexcept -> decimal_fast64_t& -{ - constexpr decimal_fast64_t one {1, 0}; - *this = *this - one; - return *this; -} - -constexpr auto decimal_fast64_t::operator--(int) noexcept -> decimal_fast64_t& -{ - return --(*this); -} - -constexpr auto scalblnd64f(decimal_fast64_t num, const long exp) noexcept -> decimal_fast64_t -{ - #ifndef BOOST_DECIMAL_FAST_MATH - constexpr decimal_fast64_t zero {0, 0}; - - if (num == zero || exp == 0 || not_finite(num)) - { - return num; - } - #endif - - num = decimal_fast64_t(num.significand_, num.biased_exponent() + exp, num.sign_); - - return num; -} - -constexpr auto scalbnd64f(const decimal_fast64_t num, const int expval) noexcept -> decimal_fast64_t -{ - return scalblnd64f(num, static_cast(expval)); -} - -constexpr auto copysignd64f(decimal_fast64_t mag, const decimal_fast64_t sgn) noexcept -> decimal_fast64_t -{ - mag.sign_ = sgn.sign_; - return mag; -} - -} // namespace decimal -} // namespace boost - -namespace std { - -template <> -#ifdef _MSC_VER -class numeric_limits -#else -struct numeric_limits -#endif -{ -#ifdef _MSC_VER - public: -#endif - - static constexpr bool is_specialized = true; - static constexpr bool is_signed = true; - static constexpr bool is_integer = false; - static constexpr bool is_exact = false; - static constexpr bool has_infinity = true; - static constexpr bool has_quiet_NaN = true; - static constexpr bool has_signaling_NaN = true; - - // These members were deprecated in C++23 - #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) - static constexpr std::float_denorm_style has_denorm = std::denorm_present; - static constexpr bool has_denorm_loss = true; - #endif - - static constexpr std::float_round_style round_style = std::round_indeterminate; - static constexpr bool is_iec559 = false; - static constexpr bool is_bounded = true; - static constexpr bool is_modulo = false; - static constexpr int digits = 16; - static constexpr int digits10 = digits; - static constexpr int max_digits10 = digits; - static constexpr int radix = 10; - static constexpr int min_exponent = -383; - static constexpr int min_exponent10 = min_exponent; - static constexpr int max_exponent = 384; - static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; - static constexpr bool tinyness_before = true; - - // Member functions - static constexpr auto (min) () -> boost::decimal::decimal_fast64_t { return {UINT32_C(1), min_exponent}; } - static constexpr auto (max) () -> boost::decimal::decimal_fast64_t { return {UINT64_C(9'999'999'999'999'999), max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal_fast64_t { return {UINT64_C(9'999'999'999'999'999), max_exponent - digits + 1, true}; } - static constexpr auto epsilon () -> boost::decimal::decimal_fast64_t { return {UINT32_C(1), -digits + 1}; } - static constexpr auto round_error () -> boost::decimal::decimal_fast64_t { return epsilon(); } - static constexpr auto infinity () -> boost::decimal::decimal_fast64_t { return boost::decimal::direct_init_d64( - boost::decimal::detail::d64_fast_inf, 0, false); } - static constexpr auto quiet_NaN () -> boost::decimal::decimal_fast64_t { return boost::decimal::direct_init_d64( - boost::decimal::detail::d64_fast_qnan, 0, false); } - static constexpr auto signaling_NaN() -> boost::decimal::decimal_fast64_t { return boost::decimal::direct_init_d64( - boost::decimal::detail::d64_fast_snan, 0, false); } - static constexpr auto denorm_min () -> boost::decimal::decimal_fast64_t { return min(); } -}; - -} // namespace std - -#endif //BOOST_DECIMAL_decimal_fast64_t_HPP diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 1a78474ed..9f0d82857 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1,10 +1,2073 @@ -// Copyright 2025 Matt Borland +// Copyright 2023 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#ifndef BOOST_DECIMAL_DECIMAL64_T_HPP -#define BOOST_DECIMAL_DECIMAL64_T_HPP +#ifndef BOOST_DECIMAL_decimal64_t_HPP +#define BOOST_DECIMAL_decimal64_t_HPP -#include +#include +#include +#include +#include +#include +#include "detail/int128.hpp" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -#endif // BOOST_DECIMAL_DECIMAL64_T_HPP +#ifndef BOOST_DECIMAL_BUILD_MODULE + +#include +#include +#include +#include +#include +#include +#include +#include + +#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) +#include +#include +#endif + +#endif // BOOST_DECIMAL_BUILD_MODULE + +namespace boost { +namespace decimal { +namespace detail { + +// See IEEE 754 section 3.5.2 +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_inf_mask = UINT64_C(0x7800000000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_nan_mask = UINT64_C(0x7C00000000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_snan_mask = UINT64_C(0x7E00000000000000); + +// Comb. Exponent Significand +// s eeeeeeeeee [ttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt] +// s 11 eeeeeeeeee [100t][tttttttttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt] + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_sign_mask = UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_mask = UINT64_C(0b0'11'11111111'000'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_shift = UINT64_C(53); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_mask = UINT64_C(0b0'00'1111111111'0'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_shift = UINT64_C(51); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_significand_mask = UINT64_C(0b0'00'00000000'111'1111111111'1111111111'1111111111'1111111111'1111111111); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_significand_mask = UINT64_C(0b0'00'0000000000'1'1111111111'1111111111'1111111111'1111111111'1111111111); + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_biggest_no_combination_significand = d64_not_11_significand_mask; + +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_max_biased_exponent = UINT64_C(767); +BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_max_significand_value = UINT64_C(9'999'999'999'999'999); + + +template +constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +} //namespace detail + +#if defined(__GNUC__) && __GNUC__ >= 8 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wclass-memaccess" +#endif + +BOOST_DECIMAL_EXPORT class decimal64_t final +{ +public: + using significand_type = std::uint64_t; + using exponent_type = std::uint64_t; + using biased_exponent_type = std::int32_t; + +private: + + std::uint64_t bits_ {}; + + // Returns the un-biased (quantum) exponent + constexpr auto unbiased_exponent() const noexcept -> exponent_type; + + // Returns the biased exponent + constexpr auto biased_exponent() const noexcept -> biased_exponent_type; + + // Allows direct editing of the exp + template + constexpr auto edit_exponent(T exp) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void); + + // Returns the significand complete with the bits implied from the combination field + constexpr auto full_significand() const noexcept -> significand_type; + constexpr auto isneg() const noexcept -> bool; + constexpr auto edit_sign(bool sign) noexcept -> void; + + constexpr auto to_components() const noexcept -> detail::decimal64_t_components; + + // Attempts conversion to integral type: + // If this is nan sets errno to EINVAL and returns 0 + // If this is not representable sets errno to ERANGE and returns 0 + template + friend constexpr auto to_integral(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); + + template + friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); + + template + friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; + + // Debug bit pattern + friend constexpr auto from_bits(std::uint64_t bits) noexcept -> decimal64_t; + friend constexpr auto to_bits(decimal64_t rhs) noexcept -> std::uint64_t; + + // Equality template between any integer type and decimal64_t + template + friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + // Template to compare operator< for any integer type and decimal64_t + template + friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + friend constexpr auto d64_div_impl(decimal64_t lhs, decimal64_t rhs, decimal64_t& q, decimal64_t& r) noexcept -> void; + + friend constexpr auto d64_mod_impl(decimal64_t lhs, decimal64_t rhs, const decimal64_t& q, decimal64_t& r) noexcept -> void; + + template + friend constexpr auto ilogb(T d) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); + + template + friend constexpr auto logb(T num) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); + + // Micro-optimization: Nearly every call to isfinite in the basic operators is !isfinite. + // We can super easily combine this into a single operation + friend constexpr auto not_finite(decimal64_t rhs) noexcept -> bool; + + template + friend constexpr auto equality_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; + + template + friend constexpr auto sequential_less_impl(DecimalType lhs, DecimalType rhs) noexcept -> bool; + + friend constexpr auto to_bid_d64(decimal64_t val) noexcept -> std::uint64_t; + + friend constexpr auto from_bid_d64(std::uint64_t bits) noexcept -> decimal64_t; + + template + friend constexpr auto to_dpd_d64(DecimalType val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint64_t); + + template + friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; + + template + friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +public: + // 3.2.3.1 construct/copy/destroy + constexpr decimal64_t() noexcept = default; + constexpr decimal64_t& operator=(const decimal64_t& rhs) noexcept = default; + constexpr decimal64_t& operator=(decimal64_t&& rhs) noexcept = default; + constexpr decimal64_t(const decimal64_t& rhs) noexcept = default; + constexpr decimal64_t(decimal64_t&& rhs) noexcept = default; + + // 3.2.2.2 Conversion form floating-point type + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS + explicit + #endif + BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t(Float val) noexcept; + + template + BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal64_t&); + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + explicit constexpr decimal64_t(Decimal val) noexcept; + + // 3.2.3.3 Conversion from integral type + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + constexpr decimal64_t(Integer val) noexcept; + + template + constexpr auto operator=(const Integer& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); + + // 3.2.3.4 Conversion to integral type + explicit constexpr operator bool() const noexcept; + explicit constexpr operator int() const noexcept; + explicit constexpr operator unsigned() const noexcept; + explicit constexpr operator long() const noexcept; + explicit constexpr operator unsigned long() const noexcept; + explicit constexpr operator long long() const noexcept; + explicit constexpr operator unsigned long long() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_INT128 + explicit constexpr operator detail::builtin_int128_t() const noexcept; + explicit constexpr operator detail::builtin_uint128_t() const noexcept; + #endif + + + // Conversion to another decimal type + template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> + constexpr operator Decimal() const noexcept; + + template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> + explicit constexpr operator Decimal() const noexcept; + + // 3.2.6 Conversion to a floating-point type + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_FLOAT16 + explicit constexpr operator std::float16_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT32 + explicit constexpr operator std::float32_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT64 + explicit constexpr operator std::float64_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 + explicit constexpr operator std::bfloat16_t() const noexcept; + #endif + + // 3.2.5 initialization from coefficient and exponent: + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal64_t(T1 coeff, T2 exp, bool sign = false) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal64_t(T1 coeff, T2 exp) noexcept; + + explicit constexpr decimal64_t(bool value) noexcept; + + // cmath functions that are easier as friends + friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; + friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; + friend constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; + friend constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; + friend constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; + friend constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; + + // 3.2.7 unary arithmetic operators: + friend constexpr auto operator+(decimal64_t rhs) noexcept -> decimal64_t; + friend constexpr auto operator-(decimal64_t rhs) noexcept -> decimal64_t; + + // 3.2.8 Binary arithmetic operators + friend constexpr auto operator+(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator+(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator+(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator-(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator-(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator-(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator*(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator*(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator*(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator/(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator/(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator/(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator%(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + // 3.2.3.5 Increment and Decrement + constexpr auto operator++() noexcept -> decimal64_t&; + constexpr auto operator++(int) noexcept -> decimal64_t; // NOLINT : C++14 so constexpr implies const + constexpr auto operator--() noexcept -> decimal64_t&; + constexpr auto operator--(int) noexcept -> decimal64_t; // NOLINT : C++14 so constexpr implies const + + // 3.2.3.6 Compound assignment + constexpr auto operator+=(decimal64_t rhs) noexcept -> decimal64_t&; + + template + constexpr auto operator+=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); + + template + constexpr auto operator+=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); + + constexpr auto operator-=(decimal64_t rhs) noexcept -> decimal64_t&; + + template + constexpr auto operator-=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); + + template + constexpr auto operator-=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); + + constexpr auto operator*=(decimal64_t rhs) noexcept -> decimal64_t&; + + template + constexpr auto operator*=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); + + template + constexpr auto operator*=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); + + constexpr auto operator/=(decimal64_t rhs) noexcept -> decimal64_t&; + + template + constexpr auto operator/=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&); + + template + constexpr auto operator/=(Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&); + + constexpr auto operator%=(decimal64_t rhs) noexcept -> decimal64_t&; + + // 3.2.9 Comparison operators: + // Equality + friend constexpr auto operator==(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; + + template + friend constexpr auto operator==(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator==(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Inequality + friend constexpr auto operator!=(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; + + template + friend constexpr auto operator!=(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Less + friend constexpr auto operator<(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; + + template + friend constexpr auto operator<(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Less equal + friend constexpr auto operator<=(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; + + template + friend constexpr auto operator<=(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Greater + friend constexpr auto operator>(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; + + template + friend constexpr auto operator>(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // Greater equal + friend constexpr auto operator>=(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; + + template + friend constexpr auto operator>=(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // C++20 spaceship + #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + friend constexpr auto operator<=>(decimal64_t lhs, decimal64_t rhs) noexcept -> std::partial_ordering; + + template + friend constexpr auto operator<=>(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + + template + friend constexpr auto operator<=>(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + #endif + + // 3.6.4 Same Quantum + friend constexpr auto samequantumd64(decimal64_t lhs, decimal64_t rhs) noexcept -> bool; + + // 3.6.5 Quantum exponent + friend constexpr auto quantexpd64(decimal64_t x) noexcept -> int; + + // 3.6.6 Quantize + friend constexpr auto quantized64(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + // Bit-wise operators + friend constexpr auto operator&(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator&(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator&(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator|(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator|(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator|(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator^(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator^(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator^(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator<<(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator<<(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator<<(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator>>(decimal64_t lhs, decimal64_t rhs) noexcept -> decimal64_t; + + template + friend constexpr auto operator>>(decimal64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + template + friend constexpr auto operator>>(Integer lhs, decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t); + + friend constexpr auto operator~(decimal64_t lhs) noexcept -> decimal64_t; + + // functions that need to be friends + template + friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; + + friend constexpr auto copysignd64(decimal64_t mag, decimal64_t sgn) noexcept -> decimal64_t; + friend constexpr auto fmad64(decimal64_t x, decimal64_t y, decimal64_t z) noexcept -> decimal64_t; + friend constexpr auto scalbnd64(decimal64_t num, int exp) noexcept -> decimal64_t; + friend constexpr auto scalblnd64(decimal64_t num, long exp) noexcept -> decimal64_t; +}; + +BOOST_DECIMAL_EXPORT using decimal64 [[deprecated("Use re-named type decimal64_t instead of decimal64")]] = decimal64_t; + +#if defined(__GNUC__) && __GNUC__ >= 8 +# pragma GCC diagnostic pop +#endif + +constexpr auto from_bits(std::uint64_t bits) noexcept -> decimal64_t +{ + decimal64_t result; + result.bits_ = bits; + + return result; +} + +constexpr auto to_bits(decimal64_t rhs) noexcept -> std::uint64_t +{ + return rhs.bits_; +} + +#if defined(__GNUC__) && __GNUC__ >= 6 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wduplicated-branches" +# pragma GCC diagnostic ignored "-Wbool-compare" +# pragma GCC diagnostic ignored "-Wconversion" +#endif + +// 3.2.5 initialization from coefficient and exponent: +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept +{ + bits_ = sign ? detail::d64_sign_mask : UINT64_C(0); + + // If the coeff is not in range, make it so + int coeff_digits {-1}; + if (coeff > detail::d64_max_significand_value) + { + coeff_digits = detail::d64_constructor_num_digits(coeff); + if (coeff_digits > detail::precision_v + 1) + { + const auto digits_to_remove {coeff_digits - (detail::precision_v + 1)}; + + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic push + # pragma GCC diagnostic ignored "-Wconversion" + #endif + + coeff /= detail::pow10(static_cast(digits_to_remove)); + + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic pop + #endif + + coeff_digits -= digits_to_remove; + exp += detail::fenv_round(coeff, sign) + digits_to_remove; + } + else + { + exp += detail::fenv_round(coeff, sign); + } + } + + auto reduced_coeff {static_cast(coeff)}; + bool big_combination {false}; + + if (reduced_coeff == 0U) + { + // Normalize our handling of zeros + return; + } + + if (reduced_coeff <= detail::d64_biggest_no_combination_significand) + { + // If the coefficient fits directly, we don't need to use the combination field + // bits_.significand = reduced_coeff; + bits_ |= (reduced_coeff & detail::d64_not_11_significand_mask); + } + else + { + // Have to use the full combination field + bits_ |= (detail::d64_combination_field_mask | (reduced_coeff & detail::d64_11_significand_mask)); + big_combination = true; + } + + // If the exponent fits, we do not need to use the combination field + const auto biased_exp {static_cast(exp + detail::bias_v)}; + if (biased_exp <= detail::d64_max_biased_exponent) + { + if (big_combination) + { + bits_ |= (biased_exp << detail::d64_11_exp_shift) & detail::d64_11_exp_mask; + } + else + { + bits_ |= (biased_exp << detail::d64_not_11_exp_shift) & detail::d64_not_11_exp_mask; + } + } + else + { + // If we can fit the extra exponent in the significand, then we can construct the value + // If we can't, the value is either 0 or infinity depending on the sign of exp + + if (coeff_digits == -1) + { + coeff_digits = detail::num_digits(reduced_coeff); + } + + const auto exp_delta {biased_exp - detail::d64_max_biased_exponent}; + const auto digit_delta {coeff_digits - static_cast(exp_delta)}; + if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) + { + exp -= digit_delta; + reduced_coeff *= detail::pow10(static_cast(digit_delta)); + *this = decimal64_t(reduced_coeff, exp, sign); + } + else + { + bits_ = exp < 0 ? UINT64_C(0) : detail::d64_inf_mask; + } + } +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal64_t::decimal64_t(const T1 coeff, const T2 exp) noexcept : decimal64_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} + +constexpr decimal64_t::decimal64_t(const bool value) noexcept : decimal64_t(static_cast(value), 0, false) {} + + +#if defined(__GNUC__) && __GNUC__ >= 6 +# pragma GCC diagnostic pop +#endif + +#if defined(__clang__) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wfloat-equal" +#elif defined(__GNUC__) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wfloat-equal" +#endif + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::decimal64_t(const Float val) noexcept +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val != val) + { + *this = from_bits(detail::d64_nan_mask); + } + else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) + { + *this = from_bits(detail::d64_inf_mask); + } + else + #endif + { + const auto components {detail::ryu::floating_point_to_fd128(val)}; + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "Mant: " << components.mantissa + << "\nExp: " << components.exponent + << "\nSign: " << components.sign << std::endl; + #endif + + if (components.exponent > detail::emax_v) + { + *this = from_bits(detail::d64_inf_mask); + } + else + { + *this = decimal64_t {components.mantissa, components.exponent, components.sign}; + } + } +} + +#if defined(__clang__) +# pragma clang diagnostic pop +#elif defined(__GNUC__) +# pragma GCC diagnostic pop +#endif + +template +BOOST_DECIMAL_CXX20_CONSTEXPR auto decimal64_t::operator=(const Float& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal64_t&) +{ + *this = decimal64_t{val}; + return *this; +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal64_t::decimal64_t(const Decimal val) noexcept +{ + *this = to_decimal(val); +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal64_t::decimal64_t(const Integer val) noexcept : decimal64_t{val, 0} {} + +template +constexpr auto decimal64_t::operator=(const Integer& val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) +{ + using ConversionType = std::conditional_t::value, std::int32_t, Integer>; + *this = decimal64_t{static_cast(val), 0}; + return *this; +} + +constexpr decimal64_t::operator bool() const noexcept +{ + constexpr decimal64_t zero {0, 0}; + return *this != zero; +} + +constexpr decimal64_t::operator int() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal64_t::operator unsigned() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal64_t::operator long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal64_t::operator unsigned long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal64_t::operator long long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal64_t::operator unsigned long long() const noexcept +{ + return to_integral(*this); +} + +#ifdef BOOST_DECIMAL_HAS_INT128 + +constexpr decimal64_t::operator detail::builtin_int128_t() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal64_t::operator detail::builtin_uint128_t() const noexcept +{ + return to_integral(*this); +} + +#endif + +template && (detail::decimal_val_v > detail::decimal_val_v), bool>> +constexpr decimal64_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> +constexpr decimal64_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator float() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator double() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator long double() const noexcept +{ + return to_float(*this); +} + +#ifdef BOOST_DECIMAL_HAS_FLOAT16 +constexpr decimal64_t::operator std::float16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT32 +constexpr decimal64_t::operator std::float32_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT64 +constexpr decimal64_t::operator std::float64_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 +constexpr decimal64_t::operator std::bfloat16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif + +constexpr auto decimal64_t::unbiased_exponent() const noexcept -> exponent_type +{ + exponent_type expval {}; + + if ((bits_ & detail::d64_combination_field_mask) == detail::d64_combination_field_mask) + { + expval = (bits_ & detail::d64_11_exp_mask) >> detail::d64_11_exp_shift; + } + else + { + expval = (bits_ & detail::d64_not_11_exp_mask) >> detail::d64_not_11_exp_shift; + } + + return expval; +} + +constexpr auto decimal64_t::biased_exponent() const noexcept -> biased_exponent_type +{ + return static_cast(unbiased_exponent()) - detail::bias_v; +} + +constexpr auto decimal64_t::full_significand() const noexcept -> significand_type +{ + significand_type significand {}; + + if ((bits_ & detail::d64_combination_field_mask) == detail::d64_combination_field_mask) + { + constexpr std::uint64_t implied_bit {UINT64_C(0b1000'0000000000'0000000000'0000000000'0000000000'0000000000)}; + significand = implied_bit | (bits_ & detail::d64_11_significand_mask); + } + else + { + significand = bits_ & detail::d64_not_11_significand_mask; + } + + return significand; +} + +constexpr auto decimal64_t::isneg() const noexcept -> bool +{ + return static_cast(bits_ & detail::d64_sign_mask); +} + +constexpr auto decimal64_t::to_components() const noexcept -> detail::decimal64_t_components +{ + detail::decimal64_t_components components {}; + + exponent_type expval {}; + significand_type significand {}; + + if ((bits_ & detail::d64_combination_field_mask) == detail::d64_combination_field_mask) + { + constexpr std::uint64_t implied_bit {UINT64_C(0b1000'0000000000'0000000000'0000000000'0000000000'0000000000)}; + significand = implied_bit | (bits_ & detail::d64_11_significand_mask); + expval = (bits_ & detail::d64_11_exp_mask) >> detail::d64_11_exp_shift; + } + else + { + significand = bits_ & detail::d64_not_11_significand_mask; + expval = (bits_ & detail::d64_not_11_exp_mask) >> detail::d64_not_11_exp_shift; + } + + components.sig = significand; + components.exp = static_cast(expval) - detail::bias_v; + components.sign = bits_ & detail::d64_sign_mask; + + return components; +} + +template +constexpr auto decimal64_t::edit_exponent(const T expval) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, T, void) +{ + *this = decimal64_t(this->full_significand(), expval, this->isneg()); +} + +constexpr auto decimal64_t::edit_sign(const bool sign) noexcept -> void +{ + if (sign) + { + bits_ |= detail::d64_sign_mask; + } + else + { + bits_ &= ~detail::d64_sign_mask; + } +} + +constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool +{ + return rhs.bits_ & detail::d64_sign_mask; +} + +constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_ & detail::d64_nan_mask) == detail::d64_nan_mask; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto isinf BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return ((rhs.bits_ & detail::d64_nan_mask) == detail::d64_inf_mask); + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto issignaling BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return (rhs.bits_ & detail::d64_snan_mask) == detail::d64_snan_mask; + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto isnormal BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check for de-normals + const auto sig {rhs.full_significand()}; + const auto exp {rhs.unbiased_exponent()}; + + if (exp <= detail::precision_v - 1) + { + return false; + } + + return (sig != 0) && isfinite(rhs); + #else + return rhs.full_significand() != 0; + #endif +} + +constexpr auto isfinite BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return ((rhs.bits_ & detail::d64_inf_mask) != detail::d64_inf_mask); + #else + static_cast(rhs); + return true; + #endif +} + +BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return ((rhs.bits_ & detail::d64_inf_mask) == detail::d64_inf_mask); + #else + static_cast(rhs); + return false; + #endif +} + +constexpr auto operator+(const decimal64_t rhs) noexcept -> decimal64_t +{ + return rhs; +} + +constexpr auto operator-(decimal64_t rhs) noexcept-> decimal64_t +{ + rhs.bits_ ^= detail::d64_sign_mask; + return rhs; +} + +constexpr auto d64_div_impl(const decimal64_t lhs, const decimal64_t rhs, decimal64_t& q, decimal64_t& r) noexcept -> void +{ + const bool sign {lhs.isneg() != rhs.isneg()}; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal64_t zero {0, 0}; + constexpr decimal64_t nan {boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask)}; + constexpr decimal64_t inf {boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask)}; + + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) + { + q = nan; + r = nan; + return; + } + + switch (lhs_fp) + { + case FP_INFINITE: + q = sign ? -inf : inf; + r = zero; + return; + case FP_ZERO: + q = sign ? -zero : zero; + r = sign ? -zero : zero; + return; + default: + static_cast(lhs); + } + + switch (rhs_fp) + { + case FP_ZERO: + q = inf; + r = zero; + return; + case FP_INFINITE: + q = sign ? -zero : zero; + r = lhs; + return; + default: + static_cast(rhs); + } + + #else + static_cast(r); + #endif + + auto lhs_components {lhs.to_components()}; + detail::normalize(lhs_components.sig, lhs_components.exp); + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "sig lhs: " << sig_lhs + << "\nexp lhs: " << exp_lhs + << "\nsig rhs: " << sig_rhs + << "\nexp rhs: " << exp_rhs << std::endl; + #endif + + q = detail::d64_generic_div_impl(lhs_components, rhs.to_components(), sign); +} + +constexpr auto d64_mod_impl(const decimal64_t lhs, const decimal64_t rhs, const decimal64_t& q, decimal64_t& r) noexcept -> void +{ + constexpr decimal64_t zero {0, 0}; + + // https://en.cppreference.com/w/cpp/numeric/math/fmod + auto q_trunc {q > zero ? floor(q) : ceil(q)}; + r = lhs - (decimal64_t(q_trunc) * rhs); +} + +constexpr auto operator+(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + auto lhs_components {lhs.to_components()}; + detail::normalize(lhs_components.sig, lhs_components.exp); + auto rhs_components {rhs.to_components()}; + detail::normalize(rhs_components.sig, rhs_components.exp); + + return detail::d64_add_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator+(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + bool abs_lhs_bigger {abs(lhs) > sig_rhs}; + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + const auto final_sig_rhs {static_cast(sig_rhs)}; + + return detail::d64_add_impl(sig_lhs, exp_lhs, lhs.isneg(), + final_sig_rhs, exp_rhs, (rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator+(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return rhs + lhs; +} + +// NOLINTNEXTLINE: If subtraction is actually addition than use operator+ and vice versa +constexpr auto operator-(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + auto lhs_components {lhs.to_components()}; + detail::normalize(lhs_components.sig, lhs_components.exp); + auto rhs_components {rhs.to_components()}; + detail::normalize(rhs_components.sig, rhs_components.exp); + rhs_components.sign = !rhs_components.sign; + + return detail::d64_add_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator-(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; + + auto sig_lhs {lhs.full_significand()}; + auto exp_lhs {lhs.biased_exponent()}; + detail::normalize(sig_lhs, exp_lhs); + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + const auto final_sig_rhs {static_cast(sig_rhs)}; + + return detail::d64_add_impl(sig_lhs, exp_lhs, lhs.isneg(), + final_sig_rhs, exp_rhs, !(rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator-(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(rhs)) + { + return rhs; + } + #endif + + auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; + const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; + + exp_type exp_lhs {0}; + detail::normalize(sig_lhs, exp_lhs); + const auto final_sig_lhs {static_cast(detail::make_positive_unsigned(sig_lhs))}; + + auto sig_rhs {rhs.full_significand()}; + auto exp_rhs {rhs.biased_exponent()}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d64_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), + sig_rhs, exp_rhs, !rhs.isneg(), + abs_lhs_bigger); +} + +constexpr auto operator*(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + auto lhs_components {lhs.to_components()}; + detail::normalize(lhs_components.sig, lhs_components.exp); + auto rhs_components {rhs.to_components()}; + detail::normalize(rhs_components.sig, rhs_components.exp); + + return detail::d64_mul_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator*(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto lhs_sig {lhs.full_significand()}; + auto lhs_exp {lhs.biased_exponent()}; + detail::normalize(lhs_sig, lhs_exp); + + auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; + exp_type rhs_exp {0}; + detail::normalize(rhs_sig, rhs_exp); + const auto final_rhs_sig {static_cast(rhs_sig)}; + + return detail::d64_mul_impl(lhs_sig, lhs_exp, lhs.isneg(), + final_rhs_sig, rhs_exp, (rhs < 0)); +} + +template +constexpr auto operator*(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return rhs * lhs; +} + +constexpr auto operator/(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + decimal64_t q {}; + decimal64_t r {}; + d64_div_impl(lhs, rhs, q, r); + + return q; +} + +template +constexpr auto operator/(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + using sig_type = decimal64_t::significand_type; + using exp_type = decimal64_t::biased_exponent_type; + using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; + + const bool sign {lhs.isneg() != (rhs < 0)}; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal64_t zero {0, 0}; + constexpr decimal64_t nan {boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask)}; + constexpr decimal64_t inf {boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask)}; + + const auto lhs_fp {fpclassify(lhs)}; + + switch (lhs_fp) + { + case FP_NAN: + return nan; + case FP_INFINITE: + return inf; + case FP_ZERO: + return sign ? -zero : zero; + default: + static_cast(lhs); + } + + if (rhs == 0) + { + return sign ? -inf : inf; + } + #endif + + auto lhs_sig {lhs.full_significand()}; + auto lhs_exp {lhs.biased_exponent()}; + detail::normalize(lhs_sig, lhs_exp); + detail::decimal64_t_components lhs_components {lhs_sig, lhs_exp, lhs.isneg()}; + + auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; + exp_type rhs_exp {}; + detail::normalize(rhs_sig, rhs_exp); + detail::decimal64_t_components rhs_components {static_cast(rhs_sig), rhs_exp, rhs < 0}; + + return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); +} + +template +constexpr auto operator/(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + using sig_type = decimal64_t::significand_type; + using exp_type = decimal64_t::biased_exponent_type; + using integer_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), detail::make_unsigned_t, sig_type>; + + const bool sign {(lhs < 0) != rhs.isneg()}; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal64_t zero {0, 0}; + constexpr decimal64_t inf {boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask)}; + constexpr decimal64_t nan {boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask)}; + + const auto rhs_fp {fpclassify(rhs)}; + + if (rhs_fp == FP_NAN) + { + return nan; + } + + switch (rhs_fp) + { + case FP_INFINITE: + return sign ? -zero : zero; + case FP_ZERO: + return sign ? -inf : inf; + default: + static_cast(lhs); + } + #endif + + auto rhs_sig {rhs.full_significand()}; + auto rhs_exp {rhs.biased_exponent()}; + detail::normalize(rhs_sig, rhs_exp); + + exp_type lhs_exp {}; + auto lhs_sig {static_cast(detail::make_positive_unsigned(lhs))}; + detail::normalize(lhs_sig, lhs_exp); + detail::decimal64_t_components lhs_components {static_cast(lhs_sig), lhs_exp, lhs < 0}; + detail::decimal64_t_components rhs_components {rhs_sig, rhs_exp, rhs.isneg()}; + + return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); +} + +constexpr auto operator%(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + decimal64_t q {}; + decimal64_t r {}; + d64_div_impl(lhs, rhs, q, r); + d64_mod_impl(lhs, rhs, q, r); + + return r; +} + +constexpr auto decimal64_t::operator++() noexcept -> decimal64_t& +{ + constexpr decimal64_t one{1, 0}; + *this = *this + one; + return *this; +} + +constexpr auto decimal64_t::operator++(int) noexcept -> decimal64_t +{ + return ++(*this); +} + +constexpr auto decimal64_t::operator--() noexcept -> decimal64_t& +{ + constexpr decimal64_t one{1, 0}; + *this = *this - one; + return *this; +} + +constexpr auto decimal64_t::operator--(int) noexcept -> decimal64_t +{ + return --(*this); +} + +constexpr auto decimal64_t::operator+=(const decimal64_t rhs) noexcept -> decimal64_t& +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator+=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator+=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) +{ + *this = *this + rhs; + return *this; +} + +constexpr auto decimal64_t::operator-=(const decimal64_t rhs) noexcept -> decimal64_t& +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator-=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator-=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) +{ + *this = *this - rhs; + return *this; +} + +constexpr auto decimal64_t::operator*=(const decimal64_t rhs) noexcept -> decimal64_t& +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator*=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator*=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) +{ + *this = *this * rhs; + return *this; +} + +constexpr auto decimal64_t::operator/=(const decimal64_t rhs) noexcept -> decimal64_t& +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator/=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t&) +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal64_t::operator/=(const Decimal rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, Decimal, decimal64_t&) +{ + *this = *this / rhs; + return *this; +} + +constexpr auto decimal64_t::operator%=(const decimal64_t rhs) noexcept -> decimal64_t& +{ + *this = *this % rhs; + return *this; +} + +constexpr auto operator==(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + return equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(rhs, lhs); +} + +constexpr auto operator!=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +constexpr auto operator<(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + if (isnan(lhs) || isnan(rhs) || + (!lhs.isneg() && rhs.isneg())) + { + return false; + } + if (lhs.isneg() && !rhs.isneg()) + { + return true; + } + if (isfinite(lhs) && isinf(rhs)) + { + return !rhs.isneg(); + } + } + #endif + + return sequential_less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !less_impl(rhs, lhs) && lhs != rhs; +} + +constexpr auto operator<=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +constexpr auto operator>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +constexpr auto operator>=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator<=>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> std::partial_ordering +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +#endif + +constexpr auto operator&(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + return from_bits(lhs.bits_ & rhs.bits_); +} + +template +constexpr auto operator&(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(lhs.bits_ & static_cast(rhs)); +} + +template +constexpr auto operator&(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(static_cast(lhs) & rhs.bits_); +} + +constexpr auto operator|(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + return from_bits(lhs.bits_ | rhs.bits_); +} + +template +constexpr auto operator|(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(lhs.bits_ | static_cast(rhs)); +} + +template +constexpr auto operator|(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(static_cast(lhs) | rhs.bits_); +} + +constexpr auto operator^(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + return from_bits(lhs.bits_ ^ rhs.bits_); +} + +template +constexpr auto operator^(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(lhs.bits_ ^ static_cast(rhs)); +} + +template +constexpr auto operator^(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(static_cast(lhs) ^ rhs.bits_); +} + +constexpr auto operator<<(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + return from_bits(lhs.bits_ << rhs.bits_); +} + +template +constexpr auto operator<<(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(lhs.bits_ << static_cast(rhs)); +} + +template +constexpr auto operator<<(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(static_cast(lhs) << rhs.bits_); +} + +constexpr auto operator>>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + return from_bits(lhs.bits_ >> rhs.bits_); +} + +template +constexpr auto operator>>(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(lhs.bits_ >> static_cast(rhs)); +} + +template +constexpr auto operator>>(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal64_t) +{ + return from_bits(static_cast(lhs) >> rhs.bits_); +} + +constexpr auto operator~(decimal64_t lhs) noexcept -> decimal64_t +{ + return from_bits(~lhs.bits_); +} + +// 3.6.4 +// Effects: determines if the quantum exponents of x and y are the same. +// If both x and y are NaN, or infinity, they have the same quantum exponents; +// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. +// The samequantum functions raise no exception. +constexpr auto samequantumd64(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) + { + return true; + } + if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) + { + return false; + } + #endif + + return lhs.unbiased_exponent() == rhs.unbiased_exponent(); +} + +// 3.6.5 +// Effects: if x is finite, returns its quantum exponent. +// Otherwise, a domain error occurs and INT_MIN is returned. +constexpr auto quantexpd64(const decimal64_t x) noexcept -> int +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(x)) + { + return INT_MIN; + } + #endif + + return static_cast(x.unbiased_exponent()); +} + +// 3.6.6 +// Returns: a number that is equal in value (except for any rounding) and sign to x, +// and which has an exponent set to be equal to the exponent of y. +// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; +// if the result does not have the same value as x, the "inexact" floating-point exception is raised. +// If the exponent is being decreased and the significand of the result has more digits than the type would allow, +// the "invalid" floating-point exception is raised and the result is NaN. +// If one or both operands are NaN the result is NaN. +// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. +// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. +// The quantize functions do not signal underflow. +constexpr auto quantized64(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Return the correct type of nan + if (isnan(lhs)) + { + return lhs; + } + if (isnan(rhs)) + { + return rhs; + } + + // If one is infinity then return a signaling NAN + if (isinf(lhs) != isinf(rhs)) + { + return boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask); + } + if (isinf(lhs) && isinf(rhs)) + { + return lhs; + } + #endif + + return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; +} + +constexpr auto scalblnd64(decimal64_t num, const long exp) noexcept -> decimal64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + constexpr decimal64_t zero {0, 0}; + + if (num == zero || exp == 0 || not_finite(num)) + { + return num; + } + #endif + + num.edit_exponent(num.biased_exponent() + exp); + + return num; +} + +constexpr auto scalbnd64(const decimal64_t num, const int expval) noexcept -> decimal64_t +{ + return scalblnd64(num, static_cast(expval)); +} + +constexpr auto copysignd64(decimal64_t mag, const decimal64_t sgn) noexcept -> decimal64_t +{ + mag.edit_sign(sgn.isneg()); + return mag; +} + +} //namespace decimal +} //namespace boost + +namespace std { + +template <> +#ifdef _MSC_VER +class numeric_limits +#else +struct numeric_limits +#endif +{ + +#ifdef _MSC_VER + public: +#endif + + static constexpr bool is_specialized = true; + static constexpr bool is_signed = true; + static constexpr bool is_integer = false; + static constexpr bool is_exact = false; + static constexpr bool has_infinity = true; + static constexpr bool has_quiet_NaN = true; + static constexpr bool has_signaling_NaN = true; + + // These members were deprecated in C++23 + #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) + static constexpr std::float_denorm_style has_denorm = std::denorm_present; + static constexpr bool has_denorm_loss = true; + #endif + + static constexpr std::float_round_style round_style = std::round_indeterminate; + static constexpr bool is_iec559 = true; + static constexpr bool is_bounded = true; + static constexpr bool is_modulo = false; + static constexpr int digits = 16; + static constexpr int digits10 = digits; + static constexpr int max_digits10 = digits; + static constexpr int radix = 10; + static constexpr int min_exponent = -383; + static constexpr int min_exponent10 = min_exponent; + static constexpr int max_exponent = 384; + static constexpr int max_exponent10 = max_exponent; + static constexpr bool traps = numeric_limits::traps; + static constexpr bool tinyness_before = true; + + // Member functions + static constexpr auto (min) () -> boost::decimal::decimal64_t { return {UINT32_C(1), min_exponent}; } + static constexpr auto (max) () -> boost::decimal::decimal64_t { return {boost::decimal::detail::d64_max_significand_value, max_exponent - digits + 1}; } + static constexpr auto lowest () -> boost::decimal::decimal64_t { return {boost::decimal::detail::d64_max_significand_value, max_exponent - digits + 1, true}; } + static constexpr auto epsilon () -> boost::decimal::decimal64_t { return {UINT32_C(1), -digits + 1}; } + static constexpr auto round_error () -> boost::decimal::decimal64_t { return epsilon(); } + static constexpr auto infinity () -> boost::decimal::decimal64_t { return boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask); } + static constexpr auto quiet_NaN () -> boost::decimal::decimal64_t { return boost::decimal::from_bits(boost::decimal::detail::d64_nan_mask); } + static constexpr auto signaling_NaN() -> boost::decimal::decimal64_t { return boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask); } + static constexpr auto denorm_min () -> boost::decimal::decimal64_t { return {1, boost::decimal::detail::etiny_v}; } +}; + +} // Namespace std + +#endif //BOOST_DECIMAL_decimal64_t_HPP diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 1830cf0a3..0c5c0a3d8 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1,10 +1,1443 @@ -// Copyright 2025 Matt Borland +// Copyright 2024 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#ifndef BOOST_DECIMAL_DECIMAL_FAST128_T_HPP -#define BOOST_DECIMAL_DECIMAL_FAST128_T_HPP +#ifndef BOOST_DECIMAL_decimal_fast128_t_HPP +#define BOOST_DECIMAL_decimal_fast128_t_HPP -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -#endif // BOOST_DECIMAL_DECIMAL_FAST128_T_HPP +#ifndef BOOST_DECIMAL_BUILD_MODULE + +#include +#include + +#endif + +namespace boost { +namespace decimal { + +namespace detail { + +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_inf = boost::int128::uint128_t {UINT64_MAX - 2, UINT64_MAX}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_qnan = boost::int128::uint128_t {UINT64_MAX - 1, UINT64_MAX}; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_snan = boost::int128::uint128_t {UINT64_MAX, UINT64_MAX}; + +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_inf_high_bits = UINT64_MAX - 2; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_qnan_high_bits = UINT64_MAX - 1; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits = UINT64_MAX; + +} // namespace detail + +BOOST_DECIMAL_EXPORT class decimal_fast128_t final +{ +public: + using significand_type = int128::uint128_t; + using exponent_type = std::uint32_t; + using biased_exponent_type = std::int32_t; + +private: + // Instead of having to encode and decode at every operation + // we store the constituent pieces directly + + significand_type significand_ {}; + exponent_type exponent_ {}; + bool sign_ {}; + + constexpr auto isneg() const noexcept -> bool + { + return sign_; + } + + constexpr auto full_significand() const noexcept -> significand_type + { + return significand_; + } + + constexpr auto unbiased_exponent() const noexcept -> exponent_type + { + return exponent_; + } + + constexpr auto biased_exponent() const noexcept -> biased_exponent_type + { + return static_cast(exponent_) - detail::bias_v; + } + + constexpr auto to_components() const noexcept -> detail::decimal_fast128_t_components + { + return {full_significand(), biased_exponent(), isneg()}; + } + + template + friend constexpr auto to_integral_128(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); + + template + friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); + + template + friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; + + friend constexpr auto d128f_div_impl(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs, decimal_fast128_t& q, decimal_fast128_t& r) noexcept -> void; + + // Equality template between any integer type and decimal128_t + template + friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + // Template to compare operator< for any integer type and decimal128_t + template + friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + template + friend constexpr auto ilogb(T d) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); + + template + friend constexpr auto logb(T num) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); + + friend constexpr auto not_finite(const decimal_fast128_t& val) noexcept -> bool; + + template + friend constexpr auto to_dpd_d128(DecimalType val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, int128::uint128_t); + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_inequality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; + + template + friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +public: + constexpr decimal_fast128_t() noexcept = default; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal_fast128_t(T1 coeff, T2 exp, bool sign = false) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal_fast128_t(T1 coeff, T2 exp) noexcept; + + explicit constexpr decimal_fast128_t(bool value) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + constexpr decimal_fast128_t(Integer val) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(Float val) noexcept; + + friend constexpr auto direct_init_d128(significand_type significand, exponent_type exponent, bool sign) noexcept -> decimal_fast128_t; + + // Classification functions + friend constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool; + friend constexpr auto isinf(const decimal_fast128_t& val) noexcept -> bool; + friend constexpr auto isnan(const decimal_fast128_t& val) noexcept -> bool; + friend constexpr auto issignaling(const decimal_fast128_t& val) noexcept -> bool; + friend constexpr auto isnormal(const decimal_fast128_t& val) noexcept -> bool; + friend constexpr auto isfinite(const decimal_fast128_t& val) noexcept -> bool; + + // Comparison operators + friend constexpr auto operator==(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; + friend constexpr auto operator!=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; + friend constexpr auto operator<(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; + friend constexpr auto operator<=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; + friend constexpr auto operator>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; + friend constexpr auto operator>=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; + + // Mixed comparison operators + template + friend constexpr auto operator==(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator==(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + friend constexpr auto operator<=>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> std::partial_ordering; + + template + friend constexpr auto operator<=>(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + + template + friend constexpr auto operator<=>(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + #endif + + // Unary arithmetic operators + friend constexpr auto operator+(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; + friend constexpr auto operator-(decimal_fast128_t rhs) noexcept -> decimal_fast128_t; + + // Binary arithmetic operators + friend constexpr auto operator+(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; + friend constexpr auto operator-(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; + friend constexpr auto operator*(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; + friend constexpr auto operator/(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; + friend constexpr auto operator%(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; + + // Mixed type binary arithmetic operators + template + friend constexpr auto operator+(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + template + friend constexpr auto operator+(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + template + friend constexpr auto operator-(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + template + friend constexpr auto operator-(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + template + friend constexpr auto operator*(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + template + friend constexpr auto operator*(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + template + friend constexpr auto operator/(const decimal_fast128_t& lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + template + friend constexpr auto operator/(Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t); + + // Compound Arithmetic Operators + constexpr auto operator+=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; + + template + constexpr auto operator+=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); + + constexpr auto operator-=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; + + template + constexpr auto operator-=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); + + constexpr auto operator*=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; + + template + constexpr auto operator*=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); + + constexpr auto operator/=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t&; + + template + constexpr auto operator/=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&); + + // Conversions + explicit constexpr operator bool() const noexcept; + explicit constexpr operator int() const noexcept; + explicit constexpr operator unsigned() const noexcept; + explicit constexpr operator long() const noexcept; + explicit constexpr operator unsigned long() const noexcept; + explicit constexpr operator long long() const noexcept; + explicit constexpr operator unsigned long long() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_INT128 + explicit constexpr operator int128::int128_t() const noexcept; + explicit constexpr operator int128::uint128_t() const noexcept; + #endif + + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_FLOAT16 + explicit constexpr operator std::float16_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT32 + explicit constexpr operator std::float32_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT64 + explicit constexpr operator std::float64_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 + explicit constexpr operator std::bfloat16_t() const noexcept; + #endif + + template , bool> = true> + explicit constexpr operator Decimal() const noexcept; + + // functions that are better as friends + template + friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; + + friend constexpr auto copysignd128f(decimal_fast128_t mag, decimal_fast128_t sgn) noexcept -> decimal_fast128_t; + friend constexpr auto scalblnd128f(decimal_fast128_t num, long exp) noexcept -> decimal_fast128_t; + friend constexpr auto scalbnd128f(decimal_fast128_t num, int exp) noexcept -> decimal_fast128_t; + friend constexpr auto fmad128f(decimal_fast128_t x, decimal_fast128_t y, decimal128_t z) noexcept -> decimal128_t; + + // Decimal functions + // 3.6.4 Same Quantum + friend constexpr auto samequantumd128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool; + + // 3.6.5 Quantum exponent + friend constexpr auto quantexpd128f(const decimal_fast128_t& x) noexcept -> int; + + // 3.6.6 Quantize + friend constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; +}; + +BOOST_DECIMAL_EXPORT using decimal128_fast [[deprecated("Use re-named type decimal_fast128_t instead of decimal128_fast")]] = decimal_fast128_t; + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, bool sign) noexcept +{ + using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; + + minimum_coefficient_size min_coeff {coeff}; + + sign_ = sign; + + // Normalize the significand in the constructor, so we don't have + // to calculate the number of digits for operations + detail::normalize(min_coeff, exp, sign); + + significand_ = static_cast(min_coeff); + + const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias_v}; + + if (biased_exp > detail::max_biased_exp_v) + { + significand_ = detail::d128_fast_inf; + } + else if (biased_exp >= 0) + { + exponent_ = static_cast(biased_exp); + } + else + { + // Flush denorms to zero + significand_ = static_cast(0); + exponent_ = static_cast(detail::bias_v); + sign_ = false; + } +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal_fast128_t::decimal_fast128_t(const T1 coeff, const T2 exp) noexcept : decimal_fast128_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} + +constexpr decimal_fast128_t::decimal_fast128_t(const bool value) noexcept : decimal_fast128_t(static_cast(value), 0, false) {} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal_fast128_t::decimal_fast128_t(const Integer val) noexcept : decimal_fast128_t{val, 0} {} + +#if defined(__clang__) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wfloat-equal" +#elif defined(__GNUC__) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wfloat-equal" +#endif + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::decimal_fast128_t(const Float val) noexcept +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val != val) + { + significand_ = detail::d128_fast_qnan; + } + else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) + { + significand_ = detail::d128_fast_inf; + } + else + #endif + { + const auto components {detail::ryu::floating_point_to_fd128(val)}; + *this = decimal_fast128_t {components.mantissa, components.exponent, components.sign}; + } +} + +#if defined(__clang__) +# pragma clang diagnostic pop +#elif defined(__GNUC__) +# pragma GCC diagnostic pop +#endif + +constexpr auto direct_init_d128(const decimal_fast128_t::significand_type significand, + const decimal_fast128_t::exponent_type exponent, + const bool sign) noexcept -> decimal_fast128_t +{ + decimal_fast128_t val {}; + val.significand_ = significand; + val.exponent_ = exponent; + val.sign_ = sign; + + return val; +} + +constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool +{ + return val.sign_; +} + +constexpr auto isinf(const decimal_fast128_t& val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_.high == detail::d128_fast_inf_high_bits; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto isnan(const decimal_fast128_t& val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_.high >= detail::d128_fast_qnan_high_bits; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto issignaling(const decimal_fast128_t& val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_.high == detail::d128_fast_snan_high_bits; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto isnormal(const decimal_fast128_t& val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val.exponent_ <= static_cast(detail::precision_v - 1)) + { + return false; + } + + return (val.significand_ != 0U) && isfinite(val); + #else + return val.significand_ != 0U; + #endif +} + +constexpr auto isfinite(const decimal_fast128_t& val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_.high < detail::d128_fast_inf_high_bits; + #else + static_cast(val); + return true; + #endif +} + +BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal_fast128_t& val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_.high >= detail::d128_fast_inf_high_bits; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto operator==(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool +{ + return fast_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(rhs, lhs); +} + +constexpr auto operator!=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool +{ + return fast_inequality_impl(lhs, rhs); +} + +template +constexpr auto operator!=(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +constexpr auto operator<(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool +{ + return fast_less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !less_impl(rhs, lhs) && lhs != rhs; +} + +constexpr auto operator<=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +constexpr auto operator>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +constexpr auto operator>=(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const decimal_fast128_t& lhs, const Integer rhs) noexcept +BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const Integer lhs, const decimal_fast128_t& rhs) noexcept +BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator<=>(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> std::partial_ordering +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +#endif + +constexpr auto operator+(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t +{ + return rhs; +} + +constexpr auto operator-(decimal_fast128_t rhs) noexcept -> decimal_fast128_t +{ + rhs.sign_ = !rhs.sign_; + return rhs; +} + +constexpr auto operator+(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + return detail::d128_add_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + rhs.significand_, rhs.biased_exponent(), rhs.sign_, + (abs(lhs) > abs(rhs))); +}; + +template +constexpr auto operator+(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + using exp_type = decimal_fast128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + bool abs_lhs_bigger {abs(lhs) > sig_rhs}; + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d128_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, + sig_rhs, exp_rhs, (rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator+(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + return rhs + lhs; +} + +constexpr auto operator-(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + return detail::d128_sub_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + rhs.significand_, rhs.biased_exponent(), rhs.sign_, + abs(lhs) > abs(rhs)); +} + +template +constexpr auto operator-(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + using exp_type = decimal_fast128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + + return detail::d128_sub_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + sig_rhs, exp_rhs, (rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator-(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + using exp_type = decimal_fast128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(rhs)) + { + return rhs; + } + #endif + + auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; + const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; + + exp_type exp_lhs {0}; + detail::normalize(sig_lhs, exp_lhs); + + return detail::d128_sub_impl( + sig_lhs, exp_lhs, (lhs < 0), + rhs.significand_, rhs.biased_exponent(), rhs.sign_, + abs_lhs_bigger); +} + +constexpr auto operator*(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + return detail::d128_mul_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, + rhs.significand_, rhs.biased_exponent(), rhs.sign_); +} + +template +constexpr auto operator*(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + using exp_type = decimal_fast128_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; + exp_type rhs_exp {0}; + detail::normalize(rhs_sig, rhs_exp); + + return detail::d128_fast_mul_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + rhs_sig, rhs_exp, (rhs < 0)); +} + +template +constexpr auto operator*(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + return rhs * lhs; +} + +constexpr auto d128f_div_impl(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs, decimal_fast128_t& q, decimal_fast128_t& r) noexcept -> void +{ + const bool sign {lhs.isneg() != rhs.isneg()}; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast128_t zero {0, 0}; + constexpr decimal_fast128_t nan {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false)}; + constexpr decimal_fast128_t inf {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false)}; + + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + // NAN has to come first + if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) + { + q = nan; + r = nan; + return; + } + + switch (lhs_fp) + { + case FP_INFINITE: + q = sign ? -inf : inf; + r = zero; + return; + case FP_ZERO: + q = sign ? -zero : zero; + r = sign ? -zero : zero; + return; + default: + static_cast(lhs); + } + + switch (rhs_fp) + { + case FP_ZERO: + q = inf; + r = zero; + return; + case FP_INFINITE: + q = sign ? -zero : zero; + r = lhs; + return; + default: + static_cast(rhs); + } + #else + static_cast(r); + #endif + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "sig lhs: " << sig_lhs + << "\nexp lhs: " << exp_lhs + << "\nsig rhs: " << sig_rhs + << "\nexp rhs: " << exp_rhs << std::endl; + #endif + + constexpr auto ten_pow_precision {detail::pow10(int128::uint128_t(detail::precision_v))}; + const auto big_sig_lhs {detail::umul256(lhs.significand_, ten_pow_precision)}; + + const auto res_sig {big_sig_lhs / rhs.significand_}; + const auto res_exp {lhs.biased_exponent() - rhs.biased_exponent() - detail::precision_v}; + + q = decimal_fast128_t(static_cast(res_sig), res_exp, sign); +} + +constexpr auto d128f_mod_impl(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs, const decimal_fast128_t& q, decimal_fast128_t& r) -> void +{ + constexpr decimal_fast128_t zero {0, 0}; + + auto q_trunc {q > zero ? floor(q) : ceil(q)}; + r = lhs - (decimal_fast128_t(q_trunc) * rhs); +}; + +constexpr auto operator/(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t +{ + decimal_fast128_t q {}; + decimal_fast128_t r {}; + d128f_div_impl(lhs, rhs, q, r); + + return q; +}; + +template +constexpr auto operator/(const decimal_fast128_t& lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast128_t zero {0, 0}; + constexpr decimal_fast128_t nan {direct_init_d128(detail::d128_fast_qnan, 0, false)}; + constexpr decimal_fast128_t inf {direct_init_d128(detail::d128_fast_inf, 0, false)}; + + const bool sign {lhs.isneg() != (rhs < 0)}; + + const auto lhs_fp {fpclassify(lhs)}; + + switch (lhs_fp) + { + case FP_NAN: + return nan; + case FP_INFINITE: + return inf; + case FP_ZERO: + return sign ? -zero : zero; + default: + static_cast(lhs); + } + + if (rhs == 0) + { + return sign ? -inf : inf; + } + #endif + + const detail::decimal_fast128_t_components lhs_components {lhs.significand_, lhs.biased_exponent(), lhs.isneg()}; + + const auto rhs_sig {detail::make_positive_unsigned(rhs)}; + const detail::decimal_fast128_t_components rhs_components {rhs_sig, 0, rhs < 0}; + detail::decimal_fast128_t_components q_components {}; + + detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); + + return {q_components.sig, q_components.exp, q_components.sign}; +} + +template +constexpr auto operator/(const Integer lhs, const decimal_fast128_t& rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast128_t zero {0, 0}; + constexpr decimal_fast128_t nan {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false)}; + constexpr decimal_fast128_t inf {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false)}; + + const bool sign {(lhs < 0) != rhs.isneg()}; + + const auto rhs_fp {fpclassify(rhs)}; + + if (rhs_fp == FP_NAN) + { + return nan; + } + + switch (rhs_fp) + { + case FP_INFINITE: + return sign ? -zero : zero; + case FP_ZERO: + return sign ? -inf : inf; + default: + static_cast(lhs); + } + #endif + + const detail::decimal_fast128_t_components lhs_components {detail::make_positive_unsigned(lhs), 0, lhs < 0}; + const detail::decimal_fast128_t_components rhs_components {rhs.significand_, rhs.biased_exponent(), rhs.isneg()}; + detail::decimal_fast128_t_components q_components {}; + + detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); + + return {q_components.sig, q_components.exp, q_components.sign}; +} + +constexpr auto operator%(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t +{ + decimal_fast128_t q {}; + decimal_fast128_t r {}; + d128f_div_impl(lhs, rhs, q, r); + d128f_mod_impl(lhs, rhs, q, r); + + return r; +}; + +constexpr auto decimal_fast128_t::operator+=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal_fast128_t::operator+=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) +{ + *this = *this + rhs; + return *this; +} + +constexpr auto decimal_fast128_t::operator-=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal_fast128_t::operator-=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) +{ + *this = *this - rhs; + return *this; +} + +constexpr auto decimal_fast128_t::operator*=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal_fast128_t::operator*=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) +{ + *this = *this * rhs; + return *this; +} + +constexpr auto decimal_fast128_t::operator/=(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t& +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal_fast128_t::operator/=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast128_t&) +{ + *this = *this / rhs; + return *this; +} + +constexpr decimal_fast128_t::operator bool() const noexcept +{ + constexpr decimal_fast128_t zero {0, 0}; + return *this != zero; +} + +constexpr decimal_fast128_t::operator int() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal_fast128_t::operator unsigned() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal_fast128_t::operator long() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal_fast128_t::operator unsigned long() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal_fast128_t::operator long long() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal_fast128_t::operator unsigned long long() const noexcept +{ + return to_integral_128(*this); +} + +#ifdef BOOST_DECIMAL_HAS_INT128 + +constexpr decimal_fast128_t::operator boost::int128::int128_t() const noexcept +{ + return to_integral_128(*this); +} + +constexpr decimal_fast128_t::operator boost::int128::uint128_t() const noexcept +{ + return to_integral_128(*this); +} + +#endif // BOOST_DECIMAL_HAS_INT128 + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator float() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator double() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator long double() const noexcept +{ + return to_float(*this); +} + +#ifdef BOOST_DECIMAL_HAS_FLOAT16 +constexpr decimal_fast128_t::operator std::float16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT32 +constexpr decimal_fast128_t::operator std::float32_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT64 +constexpr decimal_fast128_t::operator std::float64_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 +constexpr decimal_fast128_t::operator std::bfloat16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif + +template , bool>> +constexpr decimal_fast128_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +constexpr auto copysignd128f(decimal_fast128_t mag, const decimal_fast128_t sgn) noexcept -> decimal_fast128_t +{ + mag.sign_ = sgn.sign_; + return mag; +} + +constexpr auto scalblnd128f(decimal_fast128_t num, const long exp) noexcept -> decimal_fast128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + constexpr decimal_fast128_t zero {0, 0}; + + if (num == zero || exp == 0 || not_finite(num)) + { + return num; + } + #endif + + num = decimal_fast128_t(num.significand_, num.biased_exponent() + exp, num.sign_); + + return num; +} + +constexpr auto scalbnd128f(const decimal_fast128_t num, const int exp) noexcept -> decimal_fast128_t +{ + return scalblnd128f(num, static_cast(exp)); +} + +// 3.6.4 +// Effects: determines if the quantum exponents of x and y are the same. +// If both x and y are NaN, or infinity, they have the same quantum exponents; +// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. +// The samequantum functions raise no exception. +constexpr auto samequantumd128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) + { + return true; + } + if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) + { + return false; + } + #endif + + return lhs.unbiased_exponent() == rhs.unbiased_exponent(); +} + +// 3.6.5 +// Effects: if x is finite, returns its quantum exponent. +// Otherwise, a domain error occurs and INT_MIN is returned. +constexpr auto quantexpd128f(const decimal_fast128_t& x) noexcept -> int +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(x)) + { + return INT_MIN; + } + #endif + + return static_cast(x.unbiased_exponent()); +} + +// 3.6.6 +// Returns: a number that is equal in value (except for any rounding) and sign to x, +// and which has an exponent set to be equal to the exponent of y. +// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; +// if the result does not have the same value as x, the "inexact" floating-point exception is raised. +// If the exponent is being decreased and the significand of the result has more digits than the type would allow, +// the "invalid" floating-point exception is raised and the result is NaN. +// If one or both operands are NaN the result is NaN. +// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. +// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. +// The quantize functions do not signal underflow. +constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Return the correct type of nan + if (isnan(lhs)) + { + return lhs; + } + else if (isnan(rhs)) + { + return rhs; + } + + // If one is infinity then return a signaling NAN + if (isinf(lhs) != isinf(rhs)) + { + return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false); + } + else if (isinf(lhs) && isinf(rhs)) + { + return lhs; + } + #endif + + return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; +} + +} // namespace decimal +} // namespace boost + +namespace std { + +template<> +#ifdef _MSC_VER +class numeric_limits +#else +struct numeric_limits +#endif +{ + +#ifdef _MSC_VER + public: +#endif + + static constexpr bool is_specialized = true; + static constexpr bool is_signed = true; + static constexpr bool is_integer = false; + static constexpr bool is_exact = false; + static constexpr bool has_infinity = true; + static constexpr bool has_quiet_NaN = true; + static constexpr bool has_signaling_NaN = true; + + // These members were deprecated in C++23 + #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) + static constexpr std::float_denorm_style has_denorm = std::denorm_present; + static constexpr bool has_denorm_loss = true; + #endif + + static constexpr std::float_round_style round_style = std::round_indeterminate; + static constexpr bool is_iec559 = false; + static constexpr bool is_bounded = true; + static constexpr bool is_modulo = false; + static constexpr int digits = 34; + static constexpr int digits10 = digits; + static constexpr int max_digits10 = digits; + static constexpr int radix = 10; + static constexpr int min_exponent = -6143; + static constexpr int min_exponent10 = min_exponent; + static constexpr int max_exponent = 6144; + static constexpr int max_exponent10 = max_exponent; + static constexpr bool traps = numeric_limits::traps; + static constexpr bool tinyness_before = true; + + // Member functions + static constexpr auto (min) () -> boost::decimal::decimal_fast128_t { return {UINT32_C(1), min_exponent}; } + static constexpr auto (max) () -> boost::decimal::decimal_fast128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1}; } + static constexpr auto lowest () -> boost::decimal::decimal_fast128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, true}; } + static constexpr auto epsilon () -> boost::decimal::decimal_fast128_t { return {UINT32_C(1), -digits + 1}; } + static constexpr auto round_error () -> boost::decimal::decimal_fast128_t { return epsilon(); } + static constexpr auto infinity () -> boost::decimal::decimal_fast128_t { return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false); } + static constexpr auto quiet_NaN () -> boost::decimal::decimal_fast128_t { return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false); } + static constexpr auto signaling_NaN() -> boost::decimal::decimal_fast128_t { return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_snan, 0, false); } + static constexpr auto denorm_min () -> boost::decimal::decimal_fast128_t { return min(); } +}; + +} // namspace std + +#endif //BOOST_DECIMAL_decimal_fast128_t_HPP diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index e6d17ac8f..fe7311633 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1,10 +1,1510 @@ -// Copyright 2025 Matt Borland +// Copyright 2023 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#ifndef BOOST_DECIMAL_DECIMAL_FAST32_T_HPP -#define BOOST_DECIMAL_DECIMAL_FAST32_T_HPP +#ifndef BOOST_DECIMAL_decimal_fast32_t_HPP +#define BOOST_DECIMAL_decimal_fast32_t_HPP -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -#endif // BOOST_DECIMAL_DECIMAL_FAST32_T_HPP +#ifndef BOOST_DECIMAL_BUILD_MODULE +#include +#include +#endif + +namespace boost { +namespace decimal { + +namespace detail { + +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_inf = std::numeric_limits::max() - 3; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_qnan = std::numeric_limits::max() - 2; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_snan = std::numeric_limits::max() - 1; + +} + +BOOST_DECIMAL_EXPORT class decimal_fast32_t final +{ +public: + using significand_type = std::uint32_t; + using exponent_type = std::uint8_t; + using biased_exponent_type = std::int32_t; + +private: + // In regular decimal32_t we have to decode the 24 bits of the significand and the 8 bits of the exp + // Here we just use them directly at the cost of at least 2 extra bytes of internal state + // since the fast integer types will be at least 32 and 8 bits respectively + + significand_type significand_ {}; + exponent_type exponent_ {}; + bool sign_ {}; + + constexpr auto isneg() const noexcept -> bool + { + return sign_; + } + + constexpr auto full_significand() const noexcept -> significand_type + { + return significand_; + } + + constexpr auto unbiased_exponent() const noexcept -> exponent_type + { + return exponent_; + } + + constexpr auto biased_exponent() const noexcept -> biased_exponent_type + { + return static_cast(exponent_) - detail::bias_v; + } + + constexpr auto to_components() const noexcept -> detail::decimal_fast32_t_components + { + return {full_significand(), biased_exponent(), isneg()}; + } + + friend constexpr auto div_impl(decimal_fast32_t lhs, decimal_fast32_t rhs, decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void; + + friend constexpr auto mod_impl(decimal_fast32_t lhs, decimal_fast32_t rhs, const decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void; + + // Attempts conversion to integral type: + // If this is nan sets errno to EINVAL and returns 0 + // If this is not representable sets errno to ERANGE and returns 0 + template + friend constexpr auto to_integral(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); + + template + friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); + + template + friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; + + // Equality template between any integer type and decimal32_t + template + friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + // Template to compare operator< for any integer type and decimal32_t + template + friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + template + friend constexpr auto to_dpd_d32(DecimalType val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint32_t); + + template + friend constexpr auto detail::d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + + template + friend constexpr auto detail::d32_fast_add_only_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_inequality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + friend constexpr auto not_finite(const decimal_fast32_t& val) noexcept -> bool; + + template + friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; + + template + friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +public: + constexpr decimal_fast32_t() noexcept = default; + + template && detail::is_integral_v, bool> = true> + constexpr decimal_fast32_t(T1 coeff, T2 exp, bool sign = false) noexcept; + + template && detail::is_integral_v, bool> = true> + constexpr decimal_fast32_t(T1 coeff, T2 exp) noexcept; + + explicit constexpr decimal_fast32_t(bool value) noexcept; + + template , bool> = true> + constexpr decimal_fast32_t(Integer coeff) noexcept; + + template , bool> = true> + explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t(Float val) noexcept; + + constexpr decimal_fast32_t(const decimal_fast32_t& val) noexcept = default; + constexpr decimal_fast32_t(decimal_fast32_t&& val) noexcept = default; + constexpr auto operator=(const decimal_fast32_t& val) noexcept -> decimal_fast32_t& = default; + constexpr auto operator=(decimal_fast32_t&& val) noexcept -> decimal_fast32_t& = default; + + // cmath functions that are easier as friends + friend constexpr auto signbit(decimal_fast32_t val) noexcept -> bool; + friend constexpr auto isinf(decimal_fast32_t val) noexcept -> bool; + friend constexpr auto isnan(decimal_fast32_t val) noexcept -> bool; + friend constexpr auto issignaling(decimal_fast32_t val) noexcept -> bool; + friend constexpr auto isnormal(decimal_fast32_t val) noexcept -> bool; + friend constexpr auto isfinite(decimal_fast32_t val) noexcept -> bool; + + // Comparison operators + friend constexpr auto operator==(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; + friend constexpr auto operator!=(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; + friend constexpr auto operator<(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; + friend constexpr auto operator<=(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; + friend constexpr auto operator>(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; + friend constexpr auto operator>=(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; + + // Mixed comparisons + template + friend constexpr auto operator==(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator==(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + + friend constexpr auto operator<=>(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> std::partial_ordering; + + template + friend constexpr auto operator<=>(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + + template + friend constexpr auto operator<=>(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + + #endif + + // Unary operators + friend constexpr auto operator+(decimal_fast32_t rhs) noexcept -> decimal_fast32_t; + friend constexpr auto operator-(decimal_fast32_t lhs) noexcept -> decimal_fast32_t; + + // Binary arithmetic + friend constexpr auto operator+(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; + friend constexpr auto operator-(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; + friend constexpr auto operator*(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; + friend constexpr auto operator/(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; + friend constexpr auto operator%(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; + + // Mixed type binary arithmetic + template + friend constexpr auto operator+(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + template + friend constexpr auto operator+(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + template + friend constexpr auto operator-(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + template + friend constexpr auto operator-(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + template + friend constexpr auto operator*(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + template + friend constexpr auto operator*(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + template + friend constexpr auto operator/(decimal_fast32_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + template + friend constexpr auto operator/(Integer lhs, decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t); + + // Compound operators + constexpr auto operator+=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; + constexpr auto operator-=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; + constexpr auto operator*=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; + constexpr auto operator/=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; + constexpr auto operator%=(decimal_fast32_t rhs) noexcept -> decimal_fast32_t&; + + // Mixed type compound operators + template + constexpr auto operator+=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); + + template + constexpr auto operator-=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); + + template + constexpr auto operator*=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); + + template + constexpr auto operator/=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&); + + // Increment and decrement + constexpr auto operator++() noexcept -> decimal_fast32_t&; + constexpr auto operator++(int) noexcept -> decimal_fast32_t&; + constexpr auto operator--() noexcept -> decimal_fast32_t&; + constexpr auto operator--(int) noexcept -> decimal_fast32_t&; + + // 3.2.2.4 Conversion to integral type + explicit constexpr operator bool() const noexcept; + explicit constexpr operator int() const noexcept; + explicit constexpr operator unsigned() const noexcept; + explicit constexpr operator long() const noexcept; + explicit constexpr operator unsigned long() const noexcept; + explicit constexpr operator long long() const noexcept; + explicit constexpr operator unsigned long long() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_INT128 + explicit constexpr operator detail::builtin_int128_t() const noexcept; + explicit constexpr operator detail::builtin_uint128_t() const noexcept; + #endif + + // 3.2.6 Conversion to a floating-point type + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_FLOAT16 + explicit constexpr operator std::float16_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT32 + explicit constexpr operator std::float32_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT64 + explicit constexpr operator std::float64_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 + explicit constexpr operator std::bfloat16_t() const noexcept; + #endif + + + // Conversion to another decimal type + template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> + constexpr operator Decimal() const noexcept; + + template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> + explicit constexpr operator Decimal() const noexcept; + + friend constexpr auto direct_init(significand_type significand, exponent_type exponent, bool sign) noexcept -> decimal_fast32_t; + friend constexpr auto direct_init(const detail::decimal_fast32_t_components& x) noexcept -> decimal_fast32_t; + + // or extensions that need to be friends + template + friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; + + friend constexpr auto copysignd32f(decimal_fast32_t mag, decimal_fast32_t sgn) noexcept -> decimal_fast32_t; + friend constexpr auto scalbnd32f(decimal_fast32_t num, int exp) noexcept -> decimal_fast32_t; + friend constexpr auto scalblnd32f(decimal_fast32_t num, long exp) noexcept -> decimal_fast32_t; + friend constexpr auto fmad32f(decimal_fast32_t x, decimal_fast32_t y, decimal_fast32_t z) noexcept -> decimal_fast32_t; + + template + friend constexpr auto ilogb(T d) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); + + template + friend constexpr auto logb(T num) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); + + // Specific decimal functionality + friend constexpr auto samequantumd32f(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> bool; + friend constexpr auto quantexpd32f(decimal_fast32_t x) noexcept -> int; + friend constexpr auto quantized32f(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; +}; + +BOOST_DECIMAL_EXPORT using decimal32_fast [[deprecated("Use re-named type decimal_fast32_t instead of decimal_fast32_t")]] = decimal_fast32_t; + +template && detail::is_integral_v, bool>> +constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, bool sign) noexcept +{ + using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; + + minimum_coefficient_size min_coeff {coeff}; + + sign_ = sign; + + // Normalize in the constructor, so we never have to worry about it again + detail::normalize(min_coeff, exp, sign); + + significand_ = static_cast(min_coeff); + + const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias}; + + // decimal32_t exponent holds 8 bits + if (biased_exp > detail::max_biased_exp_v) + { + significand_ = detail::d32_fast_inf; + } + else if (biased_exp >= 0) + { + exponent_ = static_cast(biased_exp); + } + else + { + // Flush denorms to zero + significand_ = static_cast(0); + exponent_ = static_cast(detail::bias); + sign_ = false; + } +} + +template && detail::is_integral_v, bool>> +constexpr decimal_fast32_t::decimal_fast32_t(const T1 coeff, const T2 exp) noexcept : decimal_fast32_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} + +constexpr decimal_fast32_t::decimal_fast32_t(const bool value) noexcept : decimal_fast32_t(static_cast(value), 0, false) {} + +template , bool>> +constexpr decimal_fast32_t::decimal_fast32_t(const Integer val) noexcept : decimal_fast32_t{val, 0} {} + +#if defined(__clang__) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wfloat-equal" +#elif defined(__GNUC__) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wfloat-equal" +#endif + +template , bool>> +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::decimal_fast32_t(const Float val) noexcept +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val != val) + { + significand_ = detail::d32_fast_qnan; + } + else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) + { + significand_ = detail::d32_fast_inf; + } + else + #endif + { + const auto components {detail::ryu::floating_point_to_fd128(val)}; + *this = decimal_fast32_t {components.mantissa, components.exponent, components.sign}; + } +} + +#if defined(__clang__) +# pragma clang diagnostic pop +#elif defined(__GNUC__) +# pragma GCC diagnostic pop +#endif + +constexpr auto direct_init(const decimal_fast32_t::significand_type significand, const decimal_fast32_t::exponent_type exponent, const bool sign = false) noexcept -> decimal_fast32_t +{ + decimal_fast32_t val; + val.significand_ = significand; + val.exponent_ = exponent; + val.sign_ = sign; + + return val; +} + +constexpr auto direct_init(const detail::decimal_fast32_t_components& x) noexcept -> decimal_fast32_t +{ + decimal_fast32_t val; + val.significand_ = x.sig; + val.exponent_ = static_cast(static_cast(x.exp) + detail::bias_v); + val.sign_ = x.sign; + + return val; +} + +constexpr auto signbit(const decimal_fast32_t val) noexcept -> bool +{ + return val.sign_; +} + +constexpr auto isinf(const decimal_fast32_t val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_ == detail::d32_fast_inf; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto isnan(const decimal_fast32_t val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_ >= detail::d32_fast_qnan; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto issignaling(const decimal_fast32_t val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_ == detail::d32_fast_snan; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto isnormal(const decimal_fast32_t val) noexcept -> bool +{ + return (val.significand_ != 0) + #ifndef BOOST_DECIMAL_FAST_MATH + && isfinite(val) && (val.exponent_ > static_cast(detail::precision_v - 1)) + #endif + ; +} + +constexpr auto isfinite(const decimal_fast32_t val) noexcept -> bool +{ + return val.significand_ < detail::d32_fast_inf; +} + +BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal_fast32_t& val) noexcept -> bool +{ + return val.significand_ >= detail::d32_fast_inf; +} + +constexpr auto operator==(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool +{ + return fast_equality_impl(lhs, rhs); +} + +constexpr auto operator!=(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool +{ + return fast_inequality_impl(lhs, rhs); +} + +constexpr auto operator<(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool +{ + return fast_less_impl(lhs, rhs); +} + +constexpr auto operator<=(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +constexpr auto operator>(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool +{ + return rhs < lhs; +} + +constexpr auto operator>=(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator==(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(rhs, lhs); +} + +template +constexpr auto operator!=(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator<(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return isnan(rhs) ? false : !less_impl(rhs, lhs) && lhs != rhs; + #else + return !less_impl(rhs, lhs) && lhs != rhs; + #endif +} + +template +constexpr auto operator<=(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return isnan(lhs) ? false : !(rhs < lhs); + #else + return !(rhs < lhs); + #endif +} + +template +constexpr auto operator<=(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return isnan(rhs) ? false : !(rhs < lhs); + #else + return !(rhs < lhs); + #endif +} + +template +constexpr auto operator>(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return isnan(lhs) ? false : rhs < lhs; + #else + return rhs < lhs; + #endif +} + +template +constexpr auto operator>(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return isnan(rhs) ? false : rhs < lhs; + #else + return rhs < lhs; + #endif +} + +template +constexpr auto operator>=(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return isnan(lhs) ? false : !(lhs < rhs); + #else + return !(lhs < rhs); + #endif +} + +template +constexpr auto operator>=(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return isnan(rhs) ? false : !(lhs < rhs); + #else + return !(lhs < rhs); + #endif +} + +#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator<=>(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> std::partial_ordering +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +#endif + +constexpr auto operator+(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t +{ + return rhs; +} + +constexpr auto operator-(decimal_fast32_t lhs) noexcept -> decimal_fast32_t +{ + lhs.sign_ = !lhs.sign_; + return lhs; +} + +constexpr auto operator+(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + if (lhs.isneg() || rhs.isneg()) + { + return detail::d32_add_impl(lhs, rhs); + } + else + { + const auto res {detail::d32_fast_add_only_impl(lhs, rhs)}; + return direct_init(res); + } +} + +template +constexpr auto operator+(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; + + return detail::d32_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, + final_sig_rhs, exp_rhs, (rhs < 0)); +} + +template +constexpr auto operator+(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + return rhs + lhs; +} + +constexpr auto operator-(const decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + rhs.sign_ = !rhs.sign_; + + if (lhs.sign_ || rhs.sign_) + { + return detail::d32_add_impl(lhs, rhs); + } + else + { + const auto res {detail::d32_fast_add_only_impl(lhs, rhs)}; + return direct_init(res); + } +} + +template +constexpr auto operator-(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; + + return detail::d32_add_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + final_sig_rhs, exp_rhs, !(rhs < 0)); +} + +template +constexpr auto operator-(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(rhs)) + { + return rhs; + } + #endif + + auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; + + exp_type exp_lhs {0}; + detail::normalize(sig_lhs, exp_lhs); + auto final_sig_lhs {static_cast(detail::make_positive_unsigned(sig_lhs))}; + + return detail::d32_add_impl( + final_sig_lhs, exp_lhs, (lhs < 0), + rhs.significand_, rhs.biased_exponent(), !rhs.sign_ + ); +} + +constexpr auto operator*(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs) || !isfinite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + using mul_type = std::uint_fast64_t; + + const auto isneg {lhs.sign_ != rhs.sign_}; + constexpr auto ten_pow_seven {detail::pow10(static_cast(6))}; + constexpr auto ten_pow_seven_exp_offset {95}; + constexpr auto ten_pow_six {detail::pow10(static_cast(5))}; + constexpr auto ten_pow_six_exp_offset {96}; + + auto res_sig {(static_cast(lhs.significand_) * static_cast(rhs.significand_))}; + const bool res_sig_14_dig {res_sig > UINT64_C(10000000000000)}; + res_sig /= res_sig_14_dig ? ten_pow_seven : ten_pow_six; + auto res_exp {lhs.exponent_ + rhs.exponent_}; + res_exp -= res_sig_14_dig ? ten_pow_seven_exp_offset : ten_pow_six_exp_offset; + + res_exp += detail::fenv_round(res_sig, isneg); + + BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); + BOOST_DECIMAL_ASSERT(res_exp <= 9'999'999 || res_sig == 0U); + + return direct_init(static_cast(res_sig), static_cast(res_exp) , isneg); +} + +template +constexpr auto operator*(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + + // We don't know if the original value of rhs fits into the decimal_fast32_t significand type + // but once it's normalized it's guaranteed to fit + const auto final_sig_rhs {static_cast(sig_rhs)}; + + return detail::mul_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, + final_sig_rhs, exp_rhs, (rhs < 0)); +} + +template +constexpr auto operator*(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + return rhs * lhs; +} + +constexpr auto div_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void +{ + constexpr decimal_fast32_t zero {0, 0}; + + #ifndef BOOST_DECIMAL_FAST_MATH + const bool sign {lhs.isneg() != rhs.isneg()}; + constexpr decimal_fast32_t nan {direct_init(detail::d32_fast_qnan, UINT8_C(0), false)}; + constexpr decimal_fast32_t inf {direct_init(detail::d32_fast_inf, UINT8_C(0), false)}; + + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) + { + q = nan; + r = nan; + return; + } + + switch (lhs_fp) + { + case FP_INFINITE: + q = sign ? -inf : inf; + r = zero; + return; + case FP_ZERO: + q = sign ? -zero : zero; + r = sign ? -zero : zero; + return; + default: + static_cast(lhs); + } + + switch (rhs_fp) + { + case FP_ZERO: + q = inf; + r = zero; + return; + case FP_INFINITE: + q = sign ? -zero : zero; + r = lhs; + return; + default: + static_cast(rhs); + } + #else + static_cast(r); + #endif + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "sig lhs: " << sig_lhs + << "\nexp lhs: " << exp_lhs + << "\nsig rhs: " << sig_rhs + << "\nexp rhs: " << exp_rhs << std::endl; + #endif + + using local_signed_exponent_type = std::common_type_t; + + static_assert(sizeof(local_signed_exponent_type) >= 4, "Error in local exponent type definition"); + + // We promote to uint64 since the significands are currently 32-bits + // By appending enough zeros to the LHS we end up finding what we need anyway + constexpr auto ten_pow_precision {detail::pow10(static_cast(detail::precision_v))}; + const auto big_sig_lhs {static_cast(lhs.significand_) * ten_pow_precision}; + auto res_sig {big_sig_lhs / static_cast(rhs.significand_)}; + local_signed_exponent_type res_exp {static_cast(lhs.exponent_) - static_cast(rhs.exponent_) + 94}; + const auto isneg {lhs.sign_ != rhs.sign_}; + + // If we have 8 figures round it down to 7 + if (res_sig >= UINT64_C(10'000'000)) + { + res_exp += detail::fenv_round(res_sig, isneg); + } + + BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); + BOOST_DECIMAL_ASSERT(res_exp <= 9'999'999 || res_sig == 0U); + + if (BOOST_DECIMAL_LIKELY(res_exp >= 0)) + { + q = direct_init(static_cast(res_sig), static_cast(res_exp), isneg); + } + else + { + // Flush to zero + q = zero; + } +} + +constexpr auto mod_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, const decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void +{ + constexpr decimal_fast32_t zero {0, 0}; + + // https://en.cppreference.com/w/cpp/numeric/math/fmod + auto q_trunc {q > zero ? floor(q) : ceil(q)}; + r = lhs - (decimal_fast32_t(q_trunc) * rhs); +} + +constexpr auto operator/(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t +{ + decimal_fast32_t q {}; + decimal_fast32_t r {}; + div_impl(lhs, rhs, q, r); + + return q; +} + +template +constexpr auto operator/(const decimal_fast32_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + using exp_type = decimal_fast32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast32_t zero {0, 0}; + constexpr decimal_fast32_t nan {direct_init(detail::d32_fast_qnan, UINT8_C(0), false)}; + constexpr decimal_fast32_t inf {direct_init(detail::d32_fast_inf, UINT8_C(0), false)}; + + const bool sign {lhs.isneg() != (rhs < 0)}; + + const auto lhs_fp {fpclassify(lhs)}; + + switch (lhs_fp) + { + case FP_NAN: + return nan; + case FP_INFINITE: + return inf; + case FP_ZERO: + return sign ? -zero : zero; + default: + static_cast(lhs); + } + + if (rhs == 0) + { + return sign ? -inf : inf; + } + #endif + + const detail::decimal_fast32_t_components lhs_components {lhs.significand_, lhs.biased_exponent(), lhs.sign_}; + exp_type exp_rhs {}; + const detail::decimal_fast32_t_components rhs_components {detail::shrink_significand(detail::make_positive_unsigned(rhs), exp_rhs), exp_rhs, rhs < 0}; + + return detail::generic_div_impl(lhs_components, rhs_components); +} + +template +constexpr auto operator/(const Integer lhs, const decimal_fast32_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t) +{ + using exp_type = decimal_fast32_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast32_t zero {0, 0}; + constexpr decimal_fast32_t nan {direct_init(detail::d32_fast_qnan, UINT8_C(0), false)}; + constexpr decimal_fast32_t inf {direct_init(detail::d32_fast_inf, UINT8_C(0), false)}; + + const bool sign {(lhs < 0) != rhs.isneg()}; + + const auto rhs_fp {fpclassify(rhs)}; + + if (rhs_fp == FP_NAN) + { + return nan; + } + + switch (rhs_fp) + { + case FP_INFINITE: + return sign ? -zero : zero; + case FP_ZERO: + return sign ? -inf : inf; + default: + static_cast(lhs); + } + #endif + + exp_type lhs_exp {}; + const auto lhs_sig {detail::make_positive_unsigned(detail::shrink_significand(lhs, lhs_exp))}; + const detail::decimal_fast32_t_components lhs_components {lhs_sig, lhs_exp, lhs < 0}; + const detail::decimal_fast32_t_components rhs_components {rhs.significand_, rhs.biased_exponent(), rhs.isneg()}; + + return detail::generic_div_impl(lhs_components, rhs_components); +} + +constexpr auto operator%(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t +{ + decimal_fast32_t q {}; + decimal_fast32_t r {}; + div_impl(lhs, rhs, q, r); + mod_impl(lhs, rhs, q, r); + + return r; +} + +constexpr auto decimal_fast32_t::operator%=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& +{ + *this = *this % rhs; + return *this; +} + +constexpr auto decimal_fast32_t::operator+=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& +{ + *this = *this + rhs; + return *this; +} + +constexpr auto decimal_fast32_t::operator-=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& +{ + *this = *this - rhs; + return *this; +} + +constexpr auto decimal_fast32_t::operator*=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& +{ + *this = *this * rhs; + return *this; +} + +constexpr auto decimal_fast32_t::operator/=(const decimal_fast32_t rhs) noexcept -> decimal_fast32_t& +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal_fast32_t::operator+=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal_fast32_t::operator-=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal_fast32_t::operator*=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal_fast32_t::operator/=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) +{ + *this = *this / rhs; + return *this; +} + +constexpr auto decimal_fast32_t::operator++() noexcept -> decimal_fast32_t& +{ + constexpr decimal_fast32_t one(1, 0); + *this = *this + one; + return *this; +} + +constexpr auto decimal_fast32_t::operator++(int) noexcept -> decimal_fast32_t& +{ + return ++(*this); +} + +constexpr auto decimal_fast32_t::operator--() noexcept -> decimal_fast32_t& +{ + constexpr decimal_fast32_t one(1, 0); + *this = *this - one; + return *this; +} + +constexpr auto decimal_fast32_t::operator--(int) noexcept -> decimal_fast32_t& +{ + return --(*this); +} + +constexpr decimal_fast32_t::operator bool() const noexcept +{ + constexpr decimal_fast32_t zero {0, 0}; + return *this != zero; +} + +constexpr decimal_fast32_t::operator int() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast32_t::operator unsigned() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast32_t::operator long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast32_t::operator unsigned long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast32_t::operator long long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast32_t::operator unsigned long long() const noexcept +{ + return to_integral(*this); +} + +#ifdef BOOST_DECIMAL_HAS_INT128 + +constexpr decimal_fast32_t::operator detail::builtin_int128_t() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast32_t::operator detail::builtin_uint128_t() const noexcept +{ + return to_integral(*this); +} + +#endif + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator float() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator double() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator long double() const noexcept +{ + // The precision and range of double already exceeds what decimal_fast32_t can provide + return static_cast(to_float(*this)); +} + +#ifdef BOOST_DECIMAL_HAS_FLOAT16 +constexpr decimal_fast32_t::operator std::float16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT32 +constexpr decimal_fast32_t::operator std::float32_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT64 +constexpr decimal_fast32_t::operator std::float64_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 +constexpr decimal_fast32_t::operator std::bfloat16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif + +template && (detail::decimal_val_v > detail::decimal_val_v), bool>> +constexpr decimal_fast32_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> +constexpr decimal_fast32_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +constexpr auto scalblnd32f(const decimal_fast32_t num, const long exp) noexcept -> decimal_fast32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + constexpr decimal_fast32_t zero {0, 0}; + + if (num == zero || exp == 0 || !isfinite(num)) + { + return num; + } + #endif + + const auto res {decimal_fast32_t(num.significand_, num.biased_exponent() + exp, num.sign_)}; + + return res; +} + +constexpr auto scalbnd32f(const decimal_fast32_t num, const int expval) noexcept -> decimal_fast32_t +{ + return scalblnd32f(num, static_cast(expval)); +} + +constexpr auto copysignd32f(decimal_fast32_t mag, const decimal_fast32_t sgn) noexcept -> decimal_fast32_t +{ + mag.sign_ = sgn.sign_; + return mag; +} + +// Effects: determines if the quantum exponents of x and y are the same. +// If both x and y are NaN, or infinity, they have the same quantum exponents; +// if exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. +// The samequantum functions raise no exception. +constexpr auto samequantumd32f(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if ((lhs_fp == FP_NAN && rhs_fp == FP_NAN) || (lhs_fp == FP_INFINITE && rhs_fp == FP_INFINITE)) + { + return true; + } + if ((lhs_fp == FP_NAN || rhs_fp == FP_INFINITE) || (rhs_fp == FP_NAN || lhs_fp == FP_INFINITE)) + { + return false; + } + #endif + + return lhs.unbiased_exponent() == rhs.unbiased_exponent(); +} + +// Effects: if x is finite, returns its quantum exponent. +// Otherwise, a domain error occurs and INT_MIN is returned. +constexpr auto quantexpd32f(const decimal_fast32_t x) noexcept -> int +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(x)) + { + return INT_MIN; + } + #endif + + return static_cast(x.unbiased_exponent()); +} + +// Returns: a number that is equal in value (except for any rounding) and sign to x, +// and which has an exponent set to be equal to the exponent of y. +// If the exponent is being increased, the value is correctly rounded according to the current rounding mode; +// if the result does not have the same value, as x, the "inexact" floating-point exception is raised. +// If the exponent is being decreased and the significand of the result has more digits than the type would allow, +// the "invalid" floating-point exception is raised and the result is NaN. +// If one or both operands are NaN, the result is NaN. +// Otherwise, if only one operand is infinity, the "invalid" floating-point exception is raised and the result is NaN. +// If both operands are infinity, the result is DEC_INFINITY, with the same sign as x, converted to the type of x. +// The quantize functions do not signal underflow. +constexpr auto quantized32f(const decimal_fast32_t lhs, const decimal_fast32_t rhs) noexcept -> decimal_fast32_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + // Return the correct type of nan + if (isnan(lhs)) + { + return lhs; + } + else if (isnan(rhs)) + { + return rhs; + } + + // If one is infinity then return a signaling NAN + if (isinf(lhs) != isinf(rhs)) + { + return direct_init(detail::d32_fast_snan, UINT8_C(0)); + } + else if (isinf(lhs) && isinf(rhs)) + { + return lhs; + } + #endif + + return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; +} + +} // namespace decimal +} // namespace boost + +namespace std { + +template <> +#ifdef _MSC_VER +class numeric_limits +#else +struct numeric_limits +#endif +{ + +#ifdef _MSC_VER + public: +#endif + + static constexpr bool is_specialized = true; + static constexpr bool is_signed = true; + static constexpr bool is_integer = false; + static constexpr bool is_exact = false; + static constexpr bool has_infinity = true; + static constexpr bool has_quiet_NaN = true; + static constexpr bool has_signaling_NaN = true; + + // These members were deprecated in C++23 + #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) + static constexpr std::float_denorm_style has_denorm = std::denorm_absent; + static constexpr bool has_denorm_loss = false; + #endif + + static constexpr std::float_round_style round_style = std::round_indeterminate; + static constexpr bool is_iec559 = false; + static constexpr bool is_bounded = true; + static constexpr bool is_modulo = false; + static constexpr int digits = 7; + static constexpr int digits10 = digits; + static constexpr int max_digits10 = digits; + static constexpr int radix = 10; + static constexpr int min_exponent = -95; + static constexpr int min_exponent10 = min_exponent; + static constexpr int max_exponent = 96; + static constexpr int max_exponent10 = max_exponent; + static constexpr bool traps = numeric_limits::traps; + static constexpr bool tinyness_before = true; + + // Member functions + static constexpr auto (min) () -> boost::decimal::decimal_fast32_t { return {UINT32_C(1), min_exponent}; } + static constexpr auto (max) () -> boost::decimal::decimal_fast32_t { return {UINT32_C(9'999'999), max_exponent - digits + 1}; } + static constexpr auto lowest () -> boost::decimal::decimal_fast32_t { return {UINT32_C(9'999'999), max_exponent - digits + 1, true}; } + static constexpr auto epsilon () -> boost::decimal::decimal_fast32_t { return {UINT32_C(1), -digits + 1}; } + static constexpr auto round_error () -> boost::decimal::decimal_fast32_t { return epsilon(); } + static constexpr auto infinity () -> boost::decimal::decimal_fast32_t { return boost::decimal::direct_init(boost::decimal::detail::d32_fast_inf, UINT8_C((0))); } + static constexpr auto quiet_NaN () -> boost::decimal::decimal_fast32_t { return boost::decimal::direct_init(boost::decimal::detail::d32_fast_qnan, UINT8_C((0))); } + static constexpr auto signaling_NaN() -> boost::decimal::decimal_fast32_t { return boost::decimal::direct_init(boost::decimal::detail::d32_fast_snan, UINT8_C((0))); } + + // With denorm absent returns the same value as min + static constexpr auto denorm_min () -> boost::decimal::decimal_fast32_t { return min(); } +}; + +} // Namespace std + +#endif //BOOST_DECIMAL_decimal_fast32_t_HPP diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 72ed77f79..483cc3966 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1,10 +1,1406 @@ -// Copyright 2025 Matt Borland +// Copyright 2023 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#ifndef BOOST_DECIMAL_DECIMAL_FAST64_T_HPP -#define BOOST_DECIMAL_DECIMAL_FAST64_T_HPP +#ifndef BOOST_DECIMAL_decimal_fast64_t_HPP +#define BOOST_DECIMAL_decimal_fast64_t_HPP -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -#endif // BOOST_DECIMAL_DECIMAL_FAST64_T_HPP +#ifndef BOOST_DECIMAL_BUILD_MODULE + +#include +#include + +#endif + +namespace boost { +namespace decimal { + +namespace detail { + +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_inf = std::numeric_limits::max() - 3; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_qnan = std::numeric_limits::max() - 2; +BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_snan = std::numeric_limits::max() - 1; + +} // namespace detail + +BOOST_DECIMAL_EXPORT class decimal_fast64_t final +{ +public: + using significand_type = std::uint64_t; + using exponent_type = std::uint16_t; + using biased_exponent_type = std::int32_t; + +private: + // In regular decimal64_t we have to decode the significand end exponent + // Here we will store them directly to avoid the overhead of decoding + + significand_type significand_ {}; + exponent_type exponent_ {}; + bool sign_ {}; + + constexpr auto isneg() const noexcept -> bool + { + return sign_; + } + + constexpr auto full_significand() const noexcept -> significand_type + { + return significand_; + } + + constexpr auto unbiased_exponent() const noexcept -> exponent_type + { + return exponent_; + } + + constexpr auto biased_exponent() const noexcept -> biased_exponent_type + { + return static_cast(exponent_) - detail::bias_v; + } + + constexpr auto to_components() const noexcept -> detail::decimal_fast64_t_components + { + return {full_significand(), biased_exponent(), isneg()}; + } + + // Equality template between any integer type and decimal32_t + template + friend constexpr auto mixed_equality_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_equality_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + // Template to compare operator< for any integer type and decimal32_t + template + friend constexpr auto less_impl(Decimal lhs, Integer rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && detail::is_integral_v), bool>; + + template + friend constexpr auto mixed_decimal_less_impl(Decimal1 lhs, Decimal2 rhs) noexcept + -> std::enable_if_t<(detail::is_decimal_floating_point_v && + detail::is_decimal_floating_point_v), bool>; + + template + friend constexpr auto to_integral(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_integral_v, TargetType, TargetType); + + template + friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_float(Decimal val) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, Decimal, detail::is_floating_point_v, TargetType, TargetType); + + template + friend constexpr auto to_decimal(Decimal val) noexcept -> TargetType; + + friend constexpr auto d64_fast_div_impl(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs, decimal_fast64_t& q, decimal_fast64_t& r) noexcept -> void; + + template + friend constexpr auto ilogb(T d) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, int); + + template + friend constexpr auto logb(T num) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T); + + friend constexpr auto not_finite(decimal_fast64_t val) noexcept -> bool; + + template + friend constexpr auto to_dpd_d64(DecimalType val) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint64_t); + + template + friend constexpr auto detail::d64_mul_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_inequality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_less_equal_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; + + template + friend constexpr auto detail::nextafter_impl(DecimalType val, bool direction) noexcept -> DecimalType; + + template + friend constexpr auto detail::to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +public: + constexpr decimal_fast64_t() noexcept = default; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal_fast64_t(T1 coeff, T2 exp, bool sign = false) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal_fast64_t(T1 coeff, T2 exp) noexcept; + + explicit constexpr decimal_fast64_t(bool value) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + constexpr decimal_fast64_t(Integer val) noexcept; + + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template , bool> = true> + #endif + explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t(Float val) noexcept; + + friend constexpr auto direct_init_d64(decimal_fast64_t::significand_type significand, decimal_fast64_t::exponent_type exponent, bool sign) noexcept -> decimal_fast64_t; + + // Classification functions + friend constexpr auto signbit(decimal_fast64_t val) noexcept -> bool; + friend constexpr auto isinf(decimal_fast64_t val) noexcept -> bool; + friend constexpr auto isnan(decimal_fast64_t val) noexcept -> bool; + friend constexpr auto issignaling(decimal_fast64_t val) noexcept -> bool; + friend constexpr auto isnormal(decimal_fast64_t val) noexcept -> bool; + friend constexpr auto isfinite(decimal_fast64_t val) noexcept -> bool; + + // Comparison operator + friend constexpr auto operator==(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; + friend constexpr auto operator!=(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; + friend constexpr auto operator<(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; + friend constexpr auto operator<=(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; + friend constexpr auto operator>(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; + friend constexpr auto operator>=(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> bool; + + // Mixed type comparison operators + template + friend constexpr auto operator==(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator==(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator!=(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator<=(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + template + friend constexpr auto operator>=(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool); + + // C++20 Spaceship operator + #ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + friend constexpr auto operator<=>(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> std::partial_ordering; + + template + friend constexpr auto operator<=>(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + + template + friend constexpr auto operator<=>(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); + #endif + + // Conversions + explicit constexpr operator bool() const noexcept; + explicit constexpr operator int() const noexcept; + explicit constexpr operator unsigned() const noexcept; + explicit constexpr operator long() const noexcept; + explicit constexpr operator unsigned long() const noexcept; + explicit constexpr operator long long() const noexcept; + explicit constexpr operator unsigned long long() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_INT128 + explicit constexpr operator detail::builtin_int128_t() const noexcept; + explicit constexpr operator detail::builtin_uint128_t() const noexcept; + #endif + + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + + #ifdef BOOST_DECIMAL_HAS_FLOAT16 + explicit constexpr operator std::float16_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT32 + explicit constexpr operator std::float32_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_FLOAT64 + explicit constexpr operator std::float64_t() const noexcept; + #endif + #ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 + explicit constexpr operator std::bfloat16_t() const noexcept; + #endif + + // Conversion to other decimal type + template && (detail::decimal_val_v > detail::decimal_val_v), bool> = true> + constexpr operator Decimal() const noexcept; + + template && (detail::decimal_val_v <= detail::decimal_val_v), bool> = true> + explicit constexpr operator Decimal() const noexcept; + + // Unary Operators + friend constexpr auto operator+(decimal_fast64_t val) noexcept -> decimal_fast64_t; + friend constexpr auto operator-(decimal_fast64_t val) noexcept -> decimal_fast64_t; + + // Basic arithmetic operators + friend constexpr auto operator+(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; + friend constexpr auto operator-(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; + friend constexpr auto operator*(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; + friend constexpr auto operator/(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs) noexcept -> decimal_fast64_t; + friend constexpr auto operator%(decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t; + + // Mixed type arithmetic operators + template + friend constexpr auto operator+(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + template + friend constexpr auto operator+(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + template + friend constexpr auto operator-(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + template + friend constexpr auto operator-(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + template + friend constexpr auto operator*(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + template + friend constexpr auto operator*(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + template + friend constexpr auto operator/(decimal_fast64_t lhs, Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + template + friend constexpr auto operator/(Integer lhs, decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t); + + // Compound Operators + constexpr auto operator+=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; + constexpr auto operator-=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; + constexpr auto operator*=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; + constexpr auto operator/=(decimal_fast64_t rhs) noexcept -> decimal_fast64_t&; + + // Mixed type compound operators + template + constexpr auto operator+=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); + + template + constexpr auto operator-=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); + + template + constexpr auto operator*=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); + + template + constexpr auto operator/=(Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&); + + // Increment and decrement + constexpr auto operator++() noexcept -> decimal_fast64_t&; + constexpr auto operator++(int) noexcept -> decimal_fast64_t&; + constexpr auto operator--() noexcept -> decimal_fast64_t&; + constexpr auto operator--(int) noexcept -> decimal_fast64_t&; + + // Cmath friend functions + template + friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; + + friend constexpr auto copysignd64f(decimal_fast64_t mag, decimal_fast64_t sgn) noexcept -> decimal_fast64_t; + friend constexpr auto fmad64f(decimal_fast64_t x, decimal_fast64_t y, decimal_fast64_t z) noexcept -> decimal_fast64_t; + friend constexpr auto scalbnd64f(decimal_fast64_t num, int exp) noexcept -> decimal_fast64_t; + friend constexpr auto scalblnd64f(decimal_fast64_t num, long exp) noexcept -> decimal_fast64_t; +}; + +BOOST_DECIMAL_EXPORT using decimal64_fast [[deprecated("Use re-named type decimal_fast64_t instead of decimal64_fast")]] = decimal_fast64_t; + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal_fast64_t::decimal_fast64_t(T1 coeff, T2 exp, bool sign) noexcept +{ + using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; + + minimum_coefficient_size min_coeff {coeff}; + + sign_ = sign; + + // Normalize the value, so we don't have to worry about it with operations + detail::normalize(min_coeff, exp, sign); + + significand_ = static_cast(min_coeff); + + const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias_v}; + + if (biased_exp > detail::max_biased_exp_v) + { + significand_ = detail::d64_fast_inf; + } + else if (biased_exp >= 0) + { + exponent_ = static_cast(biased_exp); + } + else + { + // Flush denorms to zero + significand_ = static_cast(0); + exponent_ = static_cast(detail::bias_v); + sign_ = false; + } +} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template && detail::is_integral_v, bool>> +#endif +constexpr decimal_fast64_t::decimal_fast64_t(const T1 coeff, const T2 exp) noexcept : decimal_fast64_t(detail::make_positive_unsigned(coeff), exp, coeff < 0) {} + +constexpr decimal_fast64_t::decimal_fast64_t(const bool value) noexcept : decimal_fast64_t(static_cast(value), 0, false) {} + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +constexpr decimal_fast64_t::decimal_fast64_t(const Integer val) noexcept : decimal_fast64_t{val, 0} {} + +#if defined(__clang__) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wfloat-equal" +#elif defined(__GNUC__) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wfloat-equal" +#endif + +#ifdef BOOST_DECIMAL_HAS_CONCEPTS +template +#else +template , bool>> +#endif +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::decimal_fast64_t(const Float val) noexcept +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val != val) + { + significand_ = detail::d64_fast_qnan; + } + else if (val == std::numeric_limits::infinity() || val == -std::numeric_limits::infinity()) + { + significand_ = detail::d64_fast_inf; + } + else + #endif + { + const auto components {detail::ryu::floating_point_to_fd128(val)}; + *this = decimal_fast64_t {components.mantissa, components.exponent, components.sign}; + } +} + +#if defined(__clang__) +# pragma clang diagnostic pop +#elif defined(__GNUC__) +# pragma GCC diagnostic pop +#endif + +constexpr auto direct_init_d64(const decimal_fast64_t::significand_type significand, + const decimal_fast64_t::exponent_type exponent, + const bool sign) noexcept -> decimal_fast64_t +{ + decimal_fast64_t val {}; + val.significand_ = significand; + val.exponent_ = exponent; + val.sign_ = sign; + + return val; +} + +constexpr auto signbit(const decimal_fast64_t val) noexcept -> bool +{ + return val.sign_; +} + +constexpr auto isinf(const decimal_fast64_t val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_ == detail::d64_fast_inf; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto isnan(const decimal_fast64_t val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_ >= detail::d64_fast_qnan; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto issignaling(const decimal_fast64_t val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + return val.significand_ == detail::d64_fast_snan; + #else + static_cast(val); + return false; + #endif +} + +constexpr auto isnormal(const decimal_fast64_t val) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (val.exponent_ <= static_cast(detail::precision_v - 1)) + { + return false; + } + + return (val.significand_ != 0) && isfinite(val); + #else + return val.significand_ != 0; + #endif +} + +constexpr auto isfinite(const decimal_fast64_t val) noexcept -> bool +{ + return val.significand_ < detail::d64_fast_inf; +} + +BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal_fast64_t val) noexcept -> bool +{ + return val.significand_ >= detail::d64_fast_inf; +} + +constexpr auto operator==(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool +{ + return fast_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(rhs, lhs); +} + +constexpr auto operator!=(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool +{ + return fast_inequality_impl(lhs, rhs); +} + +template +constexpr auto operator!=(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +constexpr auto operator<(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool +{ + return fast_less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !less_impl(rhs, lhs) && lhs != rhs; +} + +constexpr auto operator<=(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +constexpr auto operator>(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +constexpr auto operator>=(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator<=>(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> std::partial_ordering +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +#endif // BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator+(const decimal_fast64_t val) noexcept -> decimal_fast64_t +{ + return val; +} + +constexpr auto operator-(decimal_fast64_t val) noexcept -> decimal_fast64_t +{ + val.sign_ = !val.sign_; + return val; +} + +constexpr decimal_fast64_t::operator bool() const noexcept +{ + constexpr decimal_fast64_t zero {0, 0}; + return *this != zero; +} + +constexpr decimal_fast64_t::operator int() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast64_t::operator unsigned() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast64_t::operator long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast64_t::operator unsigned long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast64_t::operator long long() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast64_t::operator unsigned long long() const noexcept +{ + return to_integral(*this); +} + +#ifdef BOOST_DECIMAL_HAS_INT128 + +constexpr decimal_fast64_t::operator detail::builtin_int128_t() const noexcept +{ + return to_integral(*this); +} + +constexpr decimal_fast64_t::operator detail::builtin_uint128_t() const noexcept +{ + return to_integral(*this); +} + +#endif // BOOST_DECIMAL_HAS_INT128 + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator float() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator double() const noexcept +{ + return to_float(*this); +} + +BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator long double() const noexcept +{ + return to_float(*this); +} + +#ifdef BOOST_DECIMAL_HAS_FLOAT16 +constexpr decimal_fast64_t::operator std::float16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT32 +constexpr decimal_fast64_t::operator std::float32_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_FLOAT64 +constexpr decimal_fast64_t::operator std::float64_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif +#ifdef BOOST_DECIMAL_HAS_BRAINFLOAT16 +constexpr decimal_fast64_t::operator std::bfloat16_t() const noexcept +{ + return static_cast(to_float(*this)); +} +#endif + +template && (detail::decimal_val_v > detail::decimal_val_v), bool>> +constexpr decimal_fast64_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +template && (detail::decimal_val_v <= detail::decimal_val_v), bool>> +constexpr decimal_fast64_t::operator Decimal() const noexcept +{ + return to_decimal(*this); +} + +constexpr auto operator+(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + return detail::d64_add_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + rhs.significand_, rhs.biased_exponent(), rhs.sign_, + (abs(lhs) > abs(rhs))); +} + +template +constexpr auto operator+(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + const auto final_sig_rhs {static_cast(sig_rhs)}; + + return detail::d64_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, + final_sig_rhs, exp_rhs, (rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator+(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + return rhs + lhs; +} + +constexpr auto operator-(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + return detail::d64_add_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + rhs.significand_, rhs.biased_exponent(), !rhs.sign_, + abs(lhs) > abs(rhs) + ); +} + +template +constexpr auto operator-(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; + const bool abs_lhs_bigger {abs(lhs) > detail::make_positive_unsigned(rhs)}; + + exp_type exp_rhs {0}; + detail::normalize(sig_rhs, exp_rhs); + const auto final_sig_rhs {static_cast(sig_rhs)}; + + return detail::d64_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, + final_sig_rhs, exp_rhs, !(rhs < 0), + abs_lhs_bigger); +} + +template +constexpr auto operator-(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(rhs)) + { + return rhs; + } + #endif + + auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; + const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; + + exp_type exp_lhs {0}; + detail::normalize(sig_lhs, exp_lhs); + const auto final_sig_lhs {static_cast(sig_lhs)}; + + return detail::d64_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), + rhs.significand_, rhs.biased_exponent(), !rhs.sign_, + abs_lhs_bigger); +} + +constexpr auto operator*(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + return detail::check_non_finite(lhs, rhs); + } + #endif + + return detail::d64_mul_impl(lhs, rhs); +} + +template +constexpr auto operator*(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = decimal_fast64_t::biased_exponent_type; + + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs)) + { + return lhs; + } + #endif + + auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; + exp_type rhs_exp {0}; + detail::normalize(rhs_sig, rhs_exp); + auto final_rhs_sig {static_cast(rhs_sig)}; + + return detail::d64_mul_impl( + lhs.significand_, lhs.biased_exponent(), lhs.sign_, + final_rhs_sig, rhs_exp, (rhs < 0) + ); +} + +template +constexpr auto operator*(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + return rhs * lhs; +} + +constexpr auto d64_fast_div_impl(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs, decimal_fast64_t& q, decimal_fast64_t& r) noexcept -> void +{ + const bool sign {lhs.isneg() != rhs.isneg()}; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast64_t zero {0, 0}; + constexpr decimal_fast64_t nan {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_snan, 0, false)}; + constexpr decimal_fast64_t inf {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_inf, 0, false)}; + + const auto lhs_fp {fpclassify(lhs)}; + const auto rhs_fp {fpclassify(rhs)}; + + if (lhs_fp == FP_NAN || rhs_fp == FP_NAN) + { + q = nan; + r = nan; + return; + } + + switch (lhs_fp) + { + case FP_INFINITE: + q = sign ? -inf : inf; + r = zero; + return; + case FP_ZERO: + q = sign ? -zero : zero; + r = sign ? -zero : zero; + return; + default: + static_cast(lhs); + } + + switch (rhs_fp) + { + case FP_ZERO: + q = inf; + r = zero; + return; + case FP_INFINITE: + q = sign ? -zero : zero; + r = lhs; + return; + default: + static_cast(rhs); + } + #else + static_cast(r); + #endif + + #ifdef BOOST_DECIMAL_DEBUG + std::cerr << "sig lhs: " << sig_lhs + << "\nexp lhs: " << exp_lhs + << "\nsig rhs: " << sig_rhs + << "\nexp rhs: " << exp_rhs << std::endl; + #endif + + using unsigned_int128_type = boost::int128::uint128_t; + + // If rhs is greater than we need to offset the significands to get the correct values + // e.g. 4/8 is 0 but 40/8 yields 5 in integer maths + constexpr auto tens_needed {detail::pow10(static_cast(detail::precision_v))}; + const auto big_sig_lhs {static_cast(lhs.significand_) * tens_needed}; + + const auto res_sig {big_sig_lhs / static_cast(rhs.significand_)}; + const auto res_exp {(lhs.biased_exponent() - detail::precision_v) - rhs.biased_exponent()}; + + BOOST_DECIMAL_ASSERT(res_sig <= std::numeric_limits::max()); + + q = decimal_fast64_t{static_cast(res_sig), res_exp, sign}; +} + +constexpr auto d64_fast_mod_impl(const decimal_fast64_t lhs, const decimal_fast64_t rhs, const decimal_fast64_t& q, decimal_fast64_t& r) noexcept -> void +{ + constexpr decimal_fast64_t zero {0, 0}; + + // https://en.cppreference.com/w/cpp/numeric/math/fmod + auto q_trunc {q > zero ? floor(q) : ceil(q)}; + r = lhs - (decimal_fast64_t(q_trunc) * rhs); +} + +constexpr auto operator/(const decimal_fast64_t& lhs, const decimal_fast64_t& rhs) noexcept -> decimal_fast64_t +{ + decimal_fast64_t q {}; + decimal_fast64_t r {}; + + d64_fast_div_impl(lhs, rhs, q, r); + + return q; +} + +template +constexpr auto operator/(const decimal_fast64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = detail::decimal_fast64_t_components::biased_exponent_type; + + const bool sign {lhs.isneg() != (rhs < 0)}; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast64_t zero {0, 0}; + constexpr decimal_fast64_t nan {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_snan, 0, false)}; + constexpr decimal_fast64_t inf {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_inf, 0, false)}; + + const auto lhs_fp {fpclassify(lhs)}; + + switch (lhs_fp) + { + case FP_NAN: + return nan; + case FP_INFINITE: + return inf; + case FP_ZERO: + return sign ? -zero : zero; + default: + static_cast(lhs); + } + + if (rhs == 0) + { + return sign ? -inf : inf; + } + #endif + + const detail::decimal_fast64_t_components lhs_components {lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()}; + + auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; + exp_type rhs_exp {}; + detail::decimal_fast64_t_components rhs_components {detail::shrink_significand(rhs_sig, rhs_exp), rhs_exp, rhs < 0}; + + return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); +} + +template +constexpr auto operator/(const Integer lhs, const decimal_fast64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t) +{ + using promoted_significand_type = detail::promote_significand_t; + using exp_type = detail::decimal_fast64_t_components::biased_exponent_type; + + const bool sign {(lhs < 0) != rhs.isneg()}; + + #ifndef BOOST_DECIMAL_FAST_MATH + // Check pre-conditions + constexpr decimal_fast64_t zero {0, 0}; + constexpr decimal_fast64_t nan {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_snan, 0, false)}; + constexpr decimal_fast64_t inf {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_inf, 0, false)}; + + const auto rhs_fp {fpclassify(rhs)}; + + switch (rhs_fp) + { + case FP_NAN: + return nan; + case FP_INFINITE: + return sign ? -zero : zero; + case FP_ZERO: + return sign ? -inf : inf; + default: + static_cast(lhs); + } + #endif + + const detail::decimal_fast64_t_components rhs_components {rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; + + auto lhs_sig {static_cast(detail::make_positive_unsigned(lhs))}; + exp_type lhs_exp {}; + const detail::decimal_fast64_t_components lhs_components {detail::shrink_significand(lhs_sig, lhs_exp), lhs_exp, lhs < 0}; + + return detail::d64_generic_div_impl(lhs_components, rhs_components, sign); +} + +constexpr auto operator%(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t +{ + decimal_fast64_t q {}; + decimal_fast64_t r {}; + d64_fast_div_impl(lhs, rhs, q, r); + d64_fast_mod_impl(lhs, rhs, q, r); + + return r; +} + +constexpr auto decimal_fast64_t::operator+=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & +{ + *this = *this + rhs; + return *this; +} + +constexpr auto decimal_fast64_t::operator-=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & +{ + *this = *this - rhs; + return *this; +} + +constexpr auto decimal_fast64_t::operator*=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & +{ + *this = *this * rhs; + return *this; +} + +constexpr auto decimal_fast64_t::operator/=(const decimal_fast64_t rhs) noexcept -> decimal_fast64_t & +{ + *this = *this / rhs; + return *this; +} + +template +constexpr auto decimal_fast64_t::operator+=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) +{ + *this = *this + rhs; + return *this; +} + +template +constexpr auto decimal_fast64_t::operator-=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) +{ + *this = *this - rhs; + return *this; +} + +template +constexpr auto decimal_fast64_t::operator*=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) +{ + *this = *this * rhs; + return *this; +} + +template +constexpr auto decimal_fast64_t::operator/=(const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast64_t&) +{ + *this = *this / rhs; + return *this; +} + +constexpr auto decimal_fast64_t::operator++() noexcept -> decimal_fast64_t& +{ + constexpr decimal_fast64_t one {1, 0}; + *this = *this + one; + return *this; +} + +constexpr auto decimal_fast64_t::operator++(int) noexcept -> decimal_fast64_t& +{ + return ++(*this); +} + +constexpr auto decimal_fast64_t::operator--() noexcept -> decimal_fast64_t& +{ + constexpr decimal_fast64_t one {1, 0}; + *this = *this - one; + return *this; +} + +constexpr auto decimal_fast64_t::operator--(int) noexcept -> decimal_fast64_t& +{ + return --(*this); +} + +constexpr auto scalblnd64f(decimal_fast64_t num, const long exp) noexcept -> decimal_fast64_t +{ + #ifndef BOOST_DECIMAL_FAST_MATH + constexpr decimal_fast64_t zero {0, 0}; + + if (num == zero || exp == 0 || not_finite(num)) + { + return num; + } + #endif + + num = decimal_fast64_t(num.significand_, num.biased_exponent() + exp, num.sign_); + + return num; +} + +constexpr auto scalbnd64f(const decimal_fast64_t num, const int expval) noexcept -> decimal_fast64_t +{ + return scalblnd64f(num, static_cast(expval)); +} + +constexpr auto copysignd64f(decimal_fast64_t mag, const decimal_fast64_t sgn) noexcept -> decimal_fast64_t +{ + mag.sign_ = sgn.sign_; + return mag; +} + +} // namespace decimal +} // namespace boost + +namespace std { + +template <> +#ifdef _MSC_VER +class numeric_limits +#else +struct numeric_limits +#endif +{ +#ifdef _MSC_VER + public: +#endif + + static constexpr bool is_specialized = true; + static constexpr bool is_signed = true; + static constexpr bool is_integer = false; + static constexpr bool is_exact = false; + static constexpr bool has_infinity = true; + static constexpr bool has_quiet_NaN = true; + static constexpr bool has_signaling_NaN = true; + + // These members were deprecated in C++23 + #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) + static constexpr std::float_denorm_style has_denorm = std::denorm_present; + static constexpr bool has_denorm_loss = true; + #endif + + static constexpr std::float_round_style round_style = std::round_indeterminate; + static constexpr bool is_iec559 = false; + static constexpr bool is_bounded = true; + static constexpr bool is_modulo = false; + static constexpr int digits = 16; + static constexpr int digits10 = digits; + static constexpr int max_digits10 = digits; + static constexpr int radix = 10; + static constexpr int min_exponent = -383; + static constexpr int min_exponent10 = min_exponent; + static constexpr int max_exponent = 384; + static constexpr int max_exponent10 = max_exponent; + static constexpr bool traps = numeric_limits::traps; + static constexpr bool tinyness_before = true; + + // Member functions + static constexpr auto (min) () -> boost::decimal::decimal_fast64_t { return {UINT32_C(1), min_exponent}; } + static constexpr auto (max) () -> boost::decimal::decimal_fast64_t { return {UINT64_C(9'999'999'999'999'999), max_exponent - digits + 1}; } + static constexpr auto lowest () -> boost::decimal::decimal_fast64_t { return {UINT64_C(9'999'999'999'999'999), max_exponent - digits + 1, true}; } + static constexpr auto epsilon () -> boost::decimal::decimal_fast64_t { return {UINT32_C(1), -digits + 1}; } + static constexpr auto round_error () -> boost::decimal::decimal_fast64_t { return epsilon(); } + static constexpr auto infinity () -> boost::decimal::decimal_fast64_t { return boost::decimal::direct_init_d64( + boost::decimal::detail::d64_fast_inf, 0, false); } + static constexpr auto quiet_NaN () -> boost::decimal::decimal_fast64_t { return boost::decimal::direct_init_d64( + boost::decimal::detail::d64_fast_qnan, 0, false); } + static constexpr auto signaling_NaN() -> boost::decimal::decimal_fast64_t { return boost::decimal::direct_init_d64( + boost::decimal::detail::d64_fast_snan, 0, false); } + static constexpr auto denorm_min () -> boost::decimal::decimal_fast64_t { return min(); } +}; + +} // namespace std + +#endif //BOOST_DECIMAL_decimal_fast64_t_HPP From d8d2ecbfbd62fc3257473beddb6bc3ed6a99ab13 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 14:07:17 +0200 Subject: [PATCH 024/967] Remove deprecated types --- include/boost/decimal/decimal128_t.hpp | 2 -- include/boost/decimal/decimal32_t.hpp | 2 -- include/boost/decimal/decimal64_t.hpp | 2 -- include/boost/decimal/decimal_fast128_t.hpp | 2 -- include/boost/decimal/decimal_fast32_t.hpp | 2 -- include/boost/decimal/decimal_fast64_t.hpp | 2 -- 6 files changed, 12 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 619876a53..3cfd93ff8 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -564,8 +564,6 @@ BOOST_DECIMAL_EXPORT class decimal128_t final friend constexpr auto fmad128(decimal128_t x, decimal128_t y, decimal128_t z) noexcept -> decimal128_t; }; -BOOST_DECIMAL_EXPORT using decimal128 [[deprecated("Use re-named type decimal128_t instead of decimal128")]] = decimal128_t; - #if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) inline std::string bit_string(decimal128_t rhs) noexcept { diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 896011f1f..85d884b3d 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -583,8 +583,6 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special constexpr auto edit_sign(bool sign) noexcept -> void; }; -BOOST_DECIMAL_EXPORT using decimal32 [[deprecated("Use the renamed decimal32_t instead of decimal32")]] = decimal32_t; - #if defined(__GNUC__) && __GNUC__ >= 8 # pragma GCC diagnostic pop #endif diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 9f0d82857..1c8df2639 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -572,8 +572,6 @@ BOOST_DECIMAL_EXPORT class decimal64_t final friend constexpr auto scalblnd64(decimal64_t num, long exp) noexcept -> decimal64_t; }; -BOOST_DECIMAL_EXPORT using decimal64 [[deprecated("Use re-named type decimal64_t instead of decimal64")]] = decimal64_t; - #if defined(__GNUC__) && __GNUC__ >= 8 # pragma GCC diagnostic pop #endif diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 0c5c0a3d8..721026a03 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -383,8 +383,6 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; }; -BOOST_DECIMAL_EXPORT using decimal128_fast [[deprecated("Use re-named type decimal_fast128_t instead of decimal128_fast")]] = decimal_fast128_t; - #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index fe7311633..ad2632963 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -388,8 +388,6 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final friend constexpr auto quantized32f(decimal_fast32_t lhs, decimal_fast32_t rhs) noexcept -> decimal_fast32_t; }; -BOOST_DECIMAL_EXPORT using decimal32_fast [[deprecated("Use re-named type decimal_fast32_t instead of decimal_fast32_t")]] = decimal_fast32_t; - template && detail::is_integral_v, bool>> constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, bool sign) noexcept { diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 483cc3966..b48def458 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -387,8 +387,6 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto scalblnd64f(decimal_fast64_t num, long exp) noexcept -> decimal_fast64_t; }; -BOOST_DECIMAL_EXPORT using decimal64_fast [[deprecated("Use re-named type decimal_fast64_t instead of decimal64_fast")]] = decimal_fast64_t; - #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else From bba002ee8369343529ff0056c439334ecf7f1ce9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 14:07:38 +0200 Subject: [PATCH 025/967] Remove fenv header --- include/boost/decimal/fenv.hpp | 21 --------------------- 1 file changed, 21 deletions(-) delete mode 100644 include/boost/decimal/fenv.hpp diff --git a/include/boost/decimal/fenv.hpp b/include/boost/decimal/fenv.hpp deleted file mode 100644 index c7e0d8661..000000000 --- a/include/boost/decimal/fenv.hpp +++ /dev/null @@ -1,21 +0,0 @@ -// Copyright 2025 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_FENV_HPP -#define BOOST_DECIMAL_FENV_HPP - -#ifdef _MSC_VER -// Expands to "This header is deprecated; use expr instead." -# define BOOST_DECIMAL_HEADER_DEPRECATED(expr) __pragma("This header is deprecated; use " expr " instead.") -#else // GNU, Clang, Intel, IBM, etc. -// Expands to "This header is deprecated use expr instead" -# define BOOST_DECIMAL_HEADER_DEPRECATED_MESSAGE(expr) _Pragma(#expr) -# define BOOST_DECIMAL_HEADER_DEPRECATED(expr) BOOST_DECIMAL_HEADER_DEPRECATED_MESSAGE(message "This header is deprecated use " expr " instead") -#endif - -BOOST_DECIMAL_HEADER_DEPRECATED(""); - -#include - -#endif //BOOST_DECIMAL_FENV_HPP From 641f87fc2a6abd1c7ecabe50a4944f419c44bfe0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 3 Sep 2025 14:21:26 +0200 Subject: [PATCH 026/967] Add doc notes about deprecations and removals --- doc/modules/ROOT/pages/cfenv.adoc | 3 ++- doc/modules/ROOT/pages/decimal128_t.adoc | 3 +++ doc/modules/ROOT/pages/decimal32_t.adoc | 3 +++ doc/modules/ROOT/pages/decimal64_t.adoc | 3 +++ doc/modules/ROOT/pages/decimal_fast128_t.adoc | 5 ++++- doc/modules/ROOT/pages/decimal_fast32_t.adoc | 5 ++++- doc/modules/ROOT/pages/decimal_fast64_t.adoc | 5 ++++- 7 files changed, 23 insertions(+), 4 deletions(-) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index fe86304eb..3bad679d1 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -24,7 +24,7 @@ IMPORTANT: The rounding mode can only be changed at runtime. All `constexpr` cal [source, c++] ---- -#include +#include namespace boost { namespace decimal { @@ -46,3 +46,4 @@ rounding_mode fesetround(rounding_mode round) noexcept; } //namespace boost ---- +Prior to v5.2.0 this header was ``, but has been changed to `` for consistency with the STL. diff --git a/doc/modules/ROOT/pages/decimal128_t.adoc b/doc/modules/ROOT/pages/decimal128_t.adoc index 6cc18da6d..468bdbbef 100644 --- a/doc/modules/ROOT/pages/decimal128_t.adoc +++ b/doc/modules/ROOT/pages/decimal128_t.adoc @@ -22,6 +22,9 @@ https://www.boost.org/LICENSE_1_0.txt | Smallest Subnormal Value | 1e-6176 |=== +IMPORTANT: Prior to v5.0.0 this type was known as `decimal32`. +This support has been removed in v6.0.0. + The encoding of decimal128_t is in the `xref:conversions.adoc[BID format]`. [source, c++] diff --git a/doc/modules/ROOT/pages/decimal32_t.adoc b/doc/modules/ROOT/pages/decimal32_t.adoc index fb3b7aebe..18ec19387 100644 --- a/doc/modules/ROOT/pages/decimal32_t.adoc +++ b/doc/modules/ROOT/pages/decimal32_t.adoc @@ -22,6 +22,9 @@ https://www.boost.org/LICENSE_1_0.txt | Smallest Subnormal Value | 1e-101 |=== +IMPORTANT: Prior to v5.0.0 this type was known as `decimal32`. +This support has been removed in v6.0.0. + The encoding of decimal32_t is in the `xref:conversions.adoc[BID format]`. [source, c++] diff --git a/doc/modules/ROOT/pages/decimal64_t.adoc b/doc/modules/ROOT/pages/decimal64_t.adoc index 380b6bd79..485beefbc 100644 --- a/doc/modules/ROOT/pages/decimal64_t.adoc +++ b/doc/modules/ROOT/pages/decimal64_t.adoc @@ -22,6 +22,9 @@ https://www.boost.org/LICENSE_1_0.txt | Smallest Subnormal Value | 1e-398 |=== +IMPORTANT: Prior to v5.0.0 this type was known as `decimal64`. +This support has been removed in v6.0.0. + The encoding of decimal64_t is in the `xref:conversions.adoc[BID format]`. [source, c++] diff --git a/doc/modules/ROOT/pages/decimal_fast128_t.adoc b/doc/modules/ROOT/pages/decimal_fast128_t.adoc index b5d5a2acd..70f96c4d9 100644 --- a/doc/modules/ROOT/pages/decimal_fast128_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast128_t.adoc @@ -24,7 +24,10 @@ As is often the case this trades space for time by having greater storage width | Smallest Subnormal Value | Flushed to 0 |=== -*IMPORTANT* `decimal_fast32_t` does not support subnormal values +IMPORTANT: `decimal_fast128_t` does not support subnormal values + +IMPORTANT: Prior to v5.0.0 this type was known as `decimal128_fast`. +This support has been removed in v6.0.0. [source, c++] ---- diff --git a/doc/modules/ROOT/pages/decimal_fast32_t.adoc b/doc/modules/ROOT/pages/decimal_fast32_t.adoc index 47953a5df..25e647a05 100644 --- a/doc/modules/ROOT/pages/decimal_fast32_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast32_t.adoc @@ -24,7 +24,10 @@ As is often the case this trades space for time by having greater storage width | Smallest Subnormal Value | Flushed to 0 |=== -*IMPORTANT* `decimal_fast32_t` does not support subnormal values +IMPORTANT: `decimal_fast32_t` does not support subnormal values + +IMPORTANT: Prior to v5.0.0 this type was known as `decimal32_fast`. +This support has been removed in v6.0.0. [source, c++] ---- diff --git a/doc/modules/ROOT/pages/decimal_fast64_t.adoc b/doc/modules/ROOT/pages/decimal_fast64_t.adoc index 7794b01b7..ec18db93c 100644 --- a/doc/modules/ROOT/pages/decimal_fast64_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast64_t.adoc @@ -24,7 +24,10 @@ As is often the case this trades space for time by having greater storage width | Smallest Subnormal Value | Flushed to 0 |=== -*IMPORTANT* `decimal_fast64_t` does not support subnormal values +IMPORTANT: `decimal_fast64_t` does not support subnormal values + +IMPORTANT: Prior to v5.0.0 this type was known as `decimal64_fast`. +This support has been removed in v6.0.0. [source, c++] ---- From 64c6300714b8e431c32a0021af7fb976e321eff2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 08:31:18 +0200 Subject: [PATCH 027/967] Replace bulleted lists with tables --- doc/modules/ROOT/pages/api_reference.adoc | 59 ++++++++++------------- 1 file changed, 25 insertions(+), 34 deletions(-) diff --git a/doc/modules/ROOT/pages/api_reference.adoc b/doc/modules/ROOT/pages/api_reference.adoc index 1ab16bd3c..d57f1e507 100644 --- a/doc/modules/ROOT/pages/api_reference.adoc +++ b/doc/modules/ROOT/pages/api_reference.adoc @@ -14,53 +14,44 @@ enums, constants and macros that are provided in this library. [#api_ref_types] == Types -=== IEEE 754 Compliant Types - -- xref:decimal32_t.adoc[decimal32_t] -- xref:decimal64_t.adoc[decimal64_t] -- xref:decimal128_t.adoc[decima128_t] - -=== Non-IEEE 754 Compliant Types - -- xref:decimal_fast32_t.adoc[decimal_fast32_t] -- xref:decimal_fast64_t.adoc[decimal_fast64_t] -- xref:decimal_fast128_t.adoc[decimal_fast128_t] +|=== +| IEEE 754 Compliant | Non-IEEE 754 Compliant +| xref:decimal32_t.adoc[`decimal32_t`] | xref:decimal_fast32_t.adoc[`decimal_fast32_t`] +| xref:decimal64_t.adoc[`decimal64_t`] | xref:decimal_fast64_t.adoc[`decimal_fast64_t`] +| xref:decimal128_t.adoc[`decima128_t`] | xref:decimal_fast128_t.adoc[`decimal_fast128_t`] +|=== [#api_ref_structs] == Structures -- xref:charconv.adoc#to_chars_result[to_chars_result] -- xref:charconv.adoc#from_chars_result[from_chars_result] +|=== +| xref:charconv.adoc#to_chars_result[to_chars_result] | xref:charconv.adoc#from_chars_result[from_chars_result] +|=== [#api_ref_enums] == Enums -- xref:charconv.adoc#chars_format[chars_format] -- xref:cfenv.adoc[rounding_mode] +|=== +| xref:charconv.adoc#chars_format[chars_format] | xref:cfenv.adoc[rounding_mode] +|=== [#api_ref_constants] == Constants -- xref:charconv.adoc#charconv_limits[limits] -- xref:numbers.adoc[numbers] +|=== +| xref:charconv.adoc#charconv_limits[limits] | xref:numbers.adoc[numbers] +|=== [#api_ref_macros] == Macros -=== User Configuration - -- xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CASSERT`] -- xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_IOSTREAM`] -- xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CLIB`] -- xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_EXCEPTIONS`] -- xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`] -- xref:config.adoc#configuration_user[`BOOST_DECIMAL_FAST_MATH`] -- xref:config.adoc#configuration_user[`BOOST_DECIMAL_DEC_EVAL_METHOD`] - -=== Automatic Configuration - -- xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_CXX20_CONSTEXPR`] -- xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_CONSTEXPR`] -- xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_CHARCONV`] -- xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_STRING_VIEW`] - +|=== +| User Configuration | Automatic Configuration +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CASSERT`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_CXX20_CONSTEXPR`] +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_IOSTREAM`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_CONSTEXPR`] +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CLIB`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_CHARCONV`] +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_EXCEPTIONS`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_STRING_VIEW`] +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`] | +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_FAST_MATH`] | +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_DEC_EVAL_METHOD`] | +|=== From b747b3505db674d2c496501d47996734f389ffbb Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 09:18:04 +0200 Subject: [PATCH 028/967] Add test set from issue --- test/Jamfile | 1 + test/github_issue_1026.cpp | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) create mode 100644 test/github_issue_1026.cpp diff --git a/test/Jamfile b/test/Jamfile index 43b3fa67b..0a1d2daec 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -62,6 +62,7 @@ run github_issue_893.cpp ; run github_issue_900.cpp ; run github_issue_911.cpp ; run github_issue_988.cpp ; +run github_issue_1026.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; run random_decimal32_comp.cpp ; diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp new file mode 100644 index 000000000..7dc874172 --- /dev/null +++ b/test/github_issue_1026.cpp @@ -0,0 +1,28 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1026 + +#include +#include +#include + +using namespace boost::decimal; +using namespace boost::decimal::literals; + +int main() +{ + // Round ties to even + + BOOST_TEST_EQ("1234567.49"_DF, "1234567"_DF); + BOOST_TEST_EQ("1234567.50"_DF, "1234568"_DF); + BOOST_TEST_EQ("1234567.51"_DF, "1234568"_DF); + + BOOST_TEST_EQ("2345678.49"_DF, "2345678"_DF); + BOOST_TEST_EQ("2345678.50"_DF, "2345678"_DF); + BOOST_TEST_EQ("2345678.51"_DF, "2345679"_DF); + + return boost::report_errors(); +} + From 26a7f75258009371e67d278002bd0d9fd2b79818 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 09:22:46 +0200 Subject: [PATCH 029/967] Add diffs from issue --- include/boost/decimal/decimal32_t.hpp | 44 ++++++++++++++++++- .../boost/decimal/detail/fenv_rounding.hpp | 8 ++-- 2 files changed, 46 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 85d884b3d..4051bd672 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -606,6 +606,42 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); + bool sticky {false}; + if (exp + detail::bias < 0) + { + const auto shift {-(exp + detail::bias)}; + for (int i = 0; i < shift - 1; ++i) + { + int d = coeff % 10u; + if (d != 0) + { + sticky = true; + } + exp += 1; + coeff /= 10u; + } + + int g_digit = coeff % 10u; + exp += 1; + coeff /= 10u; + + if (g_digit > 5) + { + ++coeff; + } + if (g_digit == 5 && sticky) + { + ++coeff; + } + if (g_digit == 5 && !sticky) + { + if (coeff % 10u % 2u == 1u) + { + ++coeff; + } + } + } + // If the coeff is not in range, make it so // Only count the number of digits if we absolutely have to int coeff_digits {-1}; @@ -622,6 +658,10 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI # pragma GCC diagnostic ignored "-Wconversion" #endif + if (coeff % detail::pow10(static_cast(digits_to_remove)) != 0u) + { + sticky = true; + } coeff /= detail::pow10(static_cast(digits_to_remove)); #if defined(__GNUC__) && !defined(__clang__) @@ -629,11 +669,11 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI #endif coeff_digits -= digits_to_remove; - exp += static_cast(detail::fenv_round(coeff, sign)) + digits_to_remove; + exp += static_cast(detail::fenv_round(coeff, sign, sticky)) + digits_to_remove; } else { - exp += static_cast(detail::fenv_round(coeff, sign)); + exp += static_cast(detail::fenv_round(coeff, sign, sticky)); } } diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 4b2e80d4b..d8cb3a18b 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -26,7 +26,7 @@ constexpr auto fenv_round(T& val, bool = false) noexcept -> int val /= 10U; int exp_delta {1}; - if (trailing_num > 5U || (trailing_num == 5U && val % 2U == 0U)) + if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && val % 2U == 1U)) { ++val; } @@ -43,7 +43,7 @@ constexpr auto fenv_round(T& val, bool = false) noexcept -> int #else template , bool> = true> -constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT(readability-function-cognitive-complexity) +constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noexcept -> int // NOLINT(readability-function-cognitive-complexity) { using significand_type = std::conditional_t >= 128, int128::uint128_t, std::int64_t>; @@ -53,7 +53,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT val /= 10U; int exp_delta {1}; - if (trailing_num > 5U || (trailing_num == 5U && val % 2U == 0U)) + if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && val % 2U == 1U)) { ++val; } @@ -94,7 +94,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false) noexcept -> int // NOLINT break; case rounding_mode::fe_dec_to_nearest: // Round to even or nearest - if (trailing_num > 5U || (trailing_num == 5U && val % 2U == 0U)) + if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && val % 2U == 1U)) { ++val; } From 18702238f32abab4f21ad2e3e87b0d21078fddb8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 11:00:21 +0200 Subject: [PATCH 030/967] Reduce constexpr code duplication --- .../boost/decimal/detail/fenv_rounding.hpp | 46 ++++++++----------- 1 file changed, 19 insertions(+), 27 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index d8cb3a18b..450fdff02 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -14,14 +14,11 @@ namespace boost { namespace decimal { namespace detail { -#ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION +namespace impl { -// Rounds the value provided and returns an offset of exponent values as required -template , bool> = true> -constexpr auto fenv_round(T& val, bool = false) noexcept -> int +template +constexpr auto fenv_round_constexpr_impl(T& val, const U max_sig, const bool, const bool sticky) noexcept { - using significand_type = std::conditional_t >= 128, int128::uint128_t, std::int64_t>; - const auto trailing_num {val % 10U}; val /= 10U; int exp_delta {1}; @@ -31,7 +28,10 @@ constexpr auto fenv_round(T& val, bool = false) noexcept -> int ++val; } - if (static_cast(val) > max_significand_v) + // If the significand was e.g. 99'999'999 rounding up + // would put it out of range again + + if (static_cast(val) > max_sig) { val /= 10U; ++exp_delta; @@ -40,6 +40,17 @@ constexpr auto fenv_round(T& val, bool = false) noexcept -> int return exp_delta; } +} + +#ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + +// Rounds the value provided and returns an offset of exponent values as required +template , bool> = true> +constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noexcept -> int +{ + return impl::fenv_round_constexpr_impl(val, max_significand_v, is_neg, sticky); +} + #else template , bool> = true> @@ -49,25 +60,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex if (BOOST_DECIMAL_IS_CONSTANT_EVALUATED(coeff)) { - const auto trailing_num {val % 10U}; - val /= 10U; - int exp_delta {1}; - - if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && val % 2U == 1U)) - { - ++val; - } - - // If the significand was e.g. 99'999'999 rounding up - // would put it out of range again - - if (static_cast(val) > static_cast(max_significand_v)) - { - val /= 10U; - ++exp_delta; - } - - return exp_delta; + return impl::fenv_round_constexpr_impl(val, max_significand_v, is_neg, sticky); } else { @@ -114,7 +107,6 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex // LCOV_EXCL_STOP } - // If the significand was e.g. 99'999'999 rounding up // would put it out of range again From d49529205b93fdf0d1dfaac65851f43df858beb8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 11:15:07 +0200 Subject: [PATCH 031/967] Move finding sticky bit to a function for reuse --- include/boost/decimal/decimal32_t.hpp | 38 +--------------- .../boost/decimal/detail/fenv_rounding.hpp | 44 +++++++++++++++++++ 2 files changed, 46 insertions(+), 36 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 4051bd672..c1210364a 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -606,47 +606,13 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); - bool sticky {false}; - if (exp + detail::bias < 0) - { - const auto shift {-(exp + detail::bias)}; - for (int i = 0; i < shift - 1; ++i) - { - int d = coeff % 10u; - if (d != 0) - { - sticky = true; - } - exp += 1; - coeff /= 10u; - } - - int g_digit = coeff % 10u; - exp += 1; - coeff /= 10u; - - if (g_digit > 5) - { - ++coeff; - } - if (g_digit == 5 && sticky) - { - ++coeff; - } - if (g_digit == 5 && !sticky) - { - if (coeff % 10u % 2u == 1u) - { - ++coeff; - } - } - } - // If the coeff is not in range, make it so // Only count the number of digits if we absolutely have to int coeff_digits {-1}; if (coeff > detail::d32_max_significand_value) { + bool sticky {detail::find_sticky_bit(coeff, exp, detail::bias_v)}; + // Since we know that the unsigned coeff is >= 10'000'000 we can use this information to traverse pruned trees coeff_digits = detail::d32_constructor_num_digits(coeff); if (coeff_digits > detail::precision + 1) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 450fdff02..6a373c9ac 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -122,6 +122,50 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex #endif +template +BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, const int exp_bias) noexcept +{ + bool sticky {false}; + const auto biased_exp {exp + exp_bias}; + + if (biased_exp < 0) + { + const auto shift {-biased_exp}; + for (int i = 0; i < shift - 1; ++i) + { + int d = coeff % 10u; + if (d != 0) + { + sticky = true; + } + exp += 1; + coeff /= 10u; + } + + int g_digit = coeff % 10u; + exp += 1; + coeff /= 10u; + + if (g_digit > 5) + { + ++coeff; + } + if (g_digit == 5 && sticky) + { + ++coeff; + } + if (g_digit == 5 && !sticky) + { + if (coeff % 10u % 2u == 1u) + { + ++coeff; + } + } + } + + return sticky; +} + } // namespace detail } // namespace decimal } // namespace boost From af32aa0f9c2a47d7c924a8ecde11bfa575afb399 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 11:16:03 +0200 Subject: [PATCH 032/967] Apply sticky bit to downward and upward rounding modes --- include/boost/decimal/detail/fenv_rounding.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 6a373c9ac..bcf89278e 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -80,7 +80,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex } break; case rounding_mode::fe_dec_downward: - if (is_neg && trailing_num != 0U) + if (is_neg && (trailing_num != 0U || sticky)) { ++val; } @@ -96,7 +96,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex // Do nothing break; case rounding_mode::fe_dec_upward: - if (!is_neg && trailing_num != 0U) + if (!is_neg && (trailing_num != 0U || sticky)) { ++val; } From e5f7d1edaead5f11d8df1b1cf8fe272144f6da87 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 11:18:56 +0200 Subject: [PATCH 033/967] Use 64 bit bitwise op --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index bcf89278e..fc6b90480 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -87,7 +87,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex break; case rounding_mode::fe_dec_to_nearest: // Round to even or nearest - if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && val % 2U == 1U)) + if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && (static_cast(val) & 1U) == 1U)) { ++val; } From 0363f703641b4a5e4ce8b601e2ed48c6c3e9421d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 11:40:17 +0200 Subject: [PATCH 034/967] Significantly reduce branches --- .../boost/decimal/detail/fenv_rounding.hpp | 55 ++++++++++--------- 1 file changed, 29 insertions(+), 26 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index fc6b90480..378ddd658 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -9,6 +9,7 @@ #include #include #include +#include namespace boost { namespace decimal { @@ -126,41 +127,43 @@ template BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, const int exp_bias) noexcept { bool sticky {false}; - const auto biased_exp {exp + exp_bias}; - if (biased_exp < 0) + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(coeff)) { - const auto shift {-biased_exp}; - for (int i = 0; i < shift - 1; ++i) + // If we are in a rounding mode that does not depend on the sticky bit opt out early + // Unlikely that the user sets the global rounding mode anyway + if (BOOST_DECIMAL_UNLIKELY(_boost_decimal_global_rounding_mode == rounding_mode::fe_dec_to_nearest_from_zero || + _boost_decimal_global_rounding_mode == rounding_mode::fe_dec_toward_zero)) { - int d = coeff % 10u; - if (d != 0) - { - sticky = true; - } - exp += 1; - coeff /= 10u; + return sticky; } + } - int g_digit = coeff % 10u; - exp += 1; - coeff /= 10u; + #endif - if (g_digit > 5) - { - ++coeff; - } - if (g_digit == 5 && sticky) + const auto biased_exp {exp + exp_bias}; + + if (biased_exp < 0) + { + const auto shift {static_cast(-biased_exp)}; + const auto shift_p10 {detail::pow10(shift)}; + const auto shift_p10_min_1 {shift_p10 / 10U}; + + const auto q {coeff / shift_p10}; + const auto rem {coeff % shift_p10}; + + auto guard_digits {rem / shift_p10_min_1}; + sticky = (rem % shift_p10) != 0U; + + coeff = q; + exp += static_cast(shift); + + if (guard_digits > 5U || (guard_digits == 5U && (sticky || (coeff % 10U) & 1U))) { ++coeff; } - if (g_digit == 5 && !sticky) - { - if (coeff % 10u % 2u == 1u) - { - ++coeff; - } - } } return sticky; From 0aea6d905ad59efd734902724bdb083d2afb3b9c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 11:52:32 +0200 Subject: [PATCH 035/967] Avoid overflow --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 378ddd658..e62c15da9 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -148,7 +148,7 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, co if (biased_exp < 0) { const auto shift {static_cast(-biased_exp)}; - const auto shift_p10 {detail::pow10(shift)}; + const auto shift_p10 {detail::pow10(shift)}; const auto shift_p10_min_1 {shift_p10 / 10U}; const auto q {coeff / shift_p10}; From 5450338b6625b3aaeafb9aaf42ad93a9807a9ded Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 11:52:41 +0200 Subject: [PATCH 036/967] Skip another modulo step --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index e62c15da9..2256ccc2f 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -160,7 +160,7 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, co coeff = q; exp += static_cast(shift); - if (guard_digits > 5U || (guard_digits == 5U && (sticky || (coeff % 10U) & 1U))) + if (guard_digits > 5U || (guard_digits == 5U && (sticky || (static_cast(coeff) & 1U)))) { ++coeff; } From e6d76fb55aa3c952e994025a7f8a59c1691727b4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 12:14:21 +0200 Subject: [PATCH 037/967] Fix digit counting --- include/boost/decimal/decimal32_t.hpp | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index c1210364a..edcf36b28 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -613,8 +613,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI { bool sticky {detail::find_sticky_bit(coeff, exp, detail::bias_v)}; - // Since we know that the unsigned coeff is >= 10'000'000 we can use this information to traverse pruned trees - coeff_digits = detail::d32_constructor_num_digits(coeff); + coeff_digits = detail::num_digits(coeff); if (coeff_digits > detail::precision + 1) { const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; From 60202cfcd3ed9f2d78c5f058d71ea58163fb1d98 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 12:16:50 +0200 Subject: [PATCH 038/967] Collected test fixes --- test/random_decimal32_fast_math.cpp | 2 +- test/random_decimal32_math.cpp | 3 +++ test/test_fenv.cpp | 6 +++--- test/test_fixed_width_trunc.cpp | 2 +- test/test_to_chars.cpp | 3 +++ 5 files changed, 11 insertions(+), 5 deletions(-) diff --git a/test/random_decimal32_fast_math.cpp b/test/random_decimal32_fast_math.cpp index e9b4d081b..9ba45139e 100644 --- a/test/random_decimal32_fast_math.cpp +++ b/test/random_decimal32_fast_math.cpp @@ -397,7 +397,7 @@ void random_mixed_division(T lower, T upper) if (isinf(res) && isinf(res_int)) { } - else if (!BOOST_TEST(abs(res - res_int) < decimal_fast32_t(1, -3))) + else if (!BOOST_TEST(abs(res - res_int) < decimal_fast32_t(1, -2))) { // LCOV_EXCL_START std::cerr << "Val 1: " << val1 diff --git a/test/random_decimal32_math.cpp b/test/random_decimal32_math.cpp index aaf65a725..164834be8 100644 --- a/test/random_decimal32_math.cpp +++ b/test/random_decimal32_math.cpp @@ -941,6 +941,9 @@ void spot_mixed_division(T val1, T val2) int main() { + // Match the rounding mode of integers + fesetround(rounding_mode::fe_dec_to_nearest_from_zero); + // Values that won't exceed the range of the significand // Only positive values random_addition(0, 5'000'000); diff --git a/test/test_fenv.cpp b/test/test_fenv.cpp index db02c4dfa..67a952562 100644 --- a/test/test_fenv.cpp +++ b/test/test_fenv.cpp @@ -42,9 +42,9 @@ void test_constructor_rounding() BOOST_TEST(boost::decimal::fegetround() == rounding_mode::fe_dec_to_nearest); BOOST_TEST_EQ(decimal32_t(1, 0), decimal32_t(1, 0)); - BOOST_TEST_EQ(decimal32_t(12'345'675, 0), decimal32_t(1'234'567, 1)); - BOOST_TEST_EQ(decimal32_t(-12'345'675, 0), decimal32_t(-1'234'567, 1)); - BOOST_TEST_EQ(decimal32_t(55'555'555, 0), decimal32_t(5'555'555, 1)); + BOOST_TEST_EQ(decimal32_t(12'345'675, 0), decimal32_t(1'234'568, 1)); + BOOST_TEST_EQ(decimal32_t(-12'345'675, 0), decimal32_t(-1'234'568, 1)); + BOOST_TEST_EQ(decimal32_t(55'555'555, 0), decimal32_t(5'555'556, 1)); BOOST_TEST_EQ(decimal32_t(55'555'556, 0), decimal32_t(5'555'556, 1)); // Toward zero diff --git a/test/test_fixed_width_trunc.cpp b/test/test_fixed_width_trunc.cpp index 44f50b097..27c46de4f 100644 --- a/test/test_fixed_width_trunc.cpp +++ b/test/test_fixed_width_trunc.cpp @@ -15,7 +15,7 @@ void test() constexpr T validation_val_1 {UINT32_C(1), 5}; constexpr T validation_val_2 {UINT32_C(12), 4}; constexpr T validation_val_3 {UINT32_C(123), 3}; - constexpr T validation_val_4 {UINT32_C(1235), 2}; + constexpr T validation_val_4 {UINT32_C(1234), 2}; constexpr T validation_val_5 {UINT32_C(12346), 1}; BOOST_TEST_EQ(rescale(test_val, 0), rescale(test_val)); diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index b841f04a5..c9c067089 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -999,6 +999,9 @@ consteval int consteval_zero_test() int main() { + // TODO(mborland): While building out sticky bits this is the best way to synchronize results across types + fesetround(rounding_mode::fe_dec_to_nearest_from_zero); + test_non_finite_values(); test_non_finite_values(); From e057198b6935ac174cbe0342d68b47125d6b475e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 12:43:49 +0200 Subject: [PATCH 039/967] Add TODO --- include/boost/decimal/detail/fenv_rounding.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 2256ccc2f..2c5e34d5d 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -151,6 +151,7 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, co const auto shift_p10 {detail::pow10(shift)}; const auto shift_p10_min_1 {shift_p10 / 10U}; + // TODO(mborland): in the uint128_t case we should expose a div_mod since the mod is already available const auto q {coeff / shift_p10}; const auto rem {coeff % shift_p10}; From c84f4d70c4211a3b96e1f298e25a77451d46e323 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 12:59:35 +0200 Subject: [PATCH 040/967] Convert coeff to unsigned type --- include/boost/decimal/decimal32_t.hpp | 49 +++++++++++++++++++-------- 1 file changed, 35 insertions(+), 14 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index edcf36b28..93258c1de 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -583,6 +583,11 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special constexpr auto edit_sign(bool sign) noexcept -> void; }; +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4127) +#endif + #if defined(__GNUC__) && __GNUC__ >= 8 # pragma GCC diagnostic pop #endif @@ -599,11 +604,23 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) +constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) { static_assert(detail::is_integral_v, "Coefficient must be an integer"); static_assert(detail::is_integral_v, "Exponent must be an integer"); + using unsigned_coeff_type = detail::make_unsigned_t; + + unsigned_coeff_type coeff {}; + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_signed_v) + { + coeff = static_cast(coeff_init < 0 ? -coeff_init : coeff_init); + } + else + { + coeff = static_cast(coeff_init); + } + bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); // If the coeff is not in range, make it so @@ -616,22 +633,22 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI coeff_digits = detail::num_digits(coeff); if (coeff_digits > detail::precision + 1) { - const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; + const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic push + # pragma GCC diagnostic ignored "-Wconversion" + #endif - if (coeff % detail::pow10(static_cast(digits_to_remove)) != 0u) - { - sticky = true; - } - coeff /= detail::pow10(static_cast(digits_to_remove)); + if (coeff % detail::pow10(static_cast(digits_to_remove)) != 0u) + { + sticky = true; + } + coeff /= detail::pow10(static_cast(digits_to_remove)); - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic pop + #endif coeff_digits -= digits_to_remove; exp += static_cast(detail::fenv_round(coeff, sign, sticky)) + digits_to_remove; @@ -702,6 +719,10 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI } } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else From 12146ed9d0211f4095a51007d88e9e5df62aa759 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 13:11:36 +0200 Subject: [PATCH 041/967] Add fast path when we know we have a sticky bit --- include/boost/decimal/decimal32_t.hpp | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 93258c1de..0280e9ba7 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -630,9 +630,11 @@ constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // { bool sticky {detail::find_sticky_bit(coeff, exp, detail::bias_v)}; - coeff_digits = detail::num_digits(coeff); - if (coeff_digits > detail::precision + 1) + if (!sticky) { + coeff_digits = detail::num_digits(coeff); + if (coeff_digits > detail::precision + 1) + { const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; #if defined(__GNUC__) && !defined(__clang__) @@ -650,11 +652,18 @@ constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // # pragma GCC diagnostic pop #endif - coeff_digits -= digits_to_remove; - exp += static_cast(detail::fenv_round(coeff, sign, sticky)) + digits_to_remove; + coeff_digits -= digits_to_remove; + exp += static_cast(detail::fenv_round(coeff, sign, sticky)) + digits_to_remove; + } + else + { + exp += static_cast(detail::fenv_round(coeff, sign, sticky)); + } } else { + // This should already be handled in find_sticky_bit + BOOST_DECIMAL_ASSERT((coeff >= 1'000'000U && coeff <= 9'999'999U) || coeff == 0U); exp += static_cast(detail::fenv_round(coeff, sign, sticky)); } } From f783344de6579c076372d0b30ccabff69bace032 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 13:12:48 +0200 Subject: [PATCH 042/967] Refactor name --- include/boost/decimal/decimal32_t.hpp | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 0280e9ba7..c2126c646 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -628,9 +628,9 @@ constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // int coeff_digits {-1}; if (coeff > detail::d32_max_significand_value) { - bool sticky {detail::find_sticky_bit(coeff, exp, detail::bias_v)}; + bool sticky_bit {detail::find_sticky_bit(coeff, exp, detail::bias_v)}; - if (!sticky) + if (!sticky_bit) { coeff_digits = detail::num_digits(coeff); if (coeff_digits > detail::precision + 1) @@ -644,7 +644,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // if (coeff % detail::pow10(static_cast(digits_to_remove)) != 0u) { - sticky = true; + sticky_bit = true; } coeff /= detail::pow10(static_cast(digits_to_remove)); @@ -653,18 +653,18 @@ constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // #endif coeff_digits -= digits_to_remove; - exp += static_cast(detail::fenv_round(coeff, sign, sticky)) + digits_to_remove; + exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)) + digits_to_remove; } else { - exp += static_cast(detail::fenv_round(coeff, sign, sticky)); + exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)); } } else { // This should already be handled in find_sticky_bit BOOST_DECIMAL_ASSERT((coeff >= 1'000'000U && coeff <= 9'999'999U) || coeff == 0U); - exp += static_cast(detail::fenv_round(coeff, sign, sticky)); + exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)); } } From 70fc611bc8ffe9d0f1bb02e976c4f2465cd44816 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 13:45:02 +0200 Subject: [PATCH 043/967] Add unsigned __int128 trailing zero removal function --- .../decimal/detail/remove_trailing_zeros.hpp | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/include/boost/decimal/detail/remove_trailing_zeros.hpp b/include/boost/decimal/detail/remove_trailing_zeros.hpp index a9df54b36..0cf1e93c1 100644 --- a/include/boost/decimal/detail/remove_trailing_zeros.hpp +++ b/include/boost/decimal/detail/remove_trailing_zeros.hpp @@ -132,6 +132,49 @@ constexpr auto remove_trailing_zeros(boost::int128::uint128_t n) noexcept -> rem return {n, s}; } +#ifdef BOOST_DECIMAL_DETAIL_INT128_HAS_INT128 + +constexpr auto remove_trailing_zeros(boost::int128::detail::builtin_u128 n) noexcept -> remove_trailing_zeros_return +{ + using u128 = boost::int128::detail::builtin_u128; + + std::size_t s {}; + + auto r = rotr<128>(n * static_cast(boost::int128::uint128_t(UINT64_C(0x62B42691AD836EB1), UINT64_C(0x16590F420A835081))), 32); + auto b = r < static_cast(boost::int128::uint128_t {UINT64_C(0x0), UINT64_C(0x33EC48)}); + s = s * 2U + static_cast(b); + n = b ? r : n; + + r = rotr<128>(n * static_cast(boost::int128::uint128_t{UINT64_C(0x3275305C1066), UINT64_C(0xE4A4D1417CD9A041)}), 16); + b = r < static_cast(boost::int128::uint128_t {UINT64_C(0x734), UINT64_C(0xACA5F6226F0ADA62)}); + s = s * 2U + static_cast(b); + n = b ? r : n; + + r = rotr<128>(n * static_cast(boost::int128::uint128_t {UINT64_C(0x6B7213EE9F5A78), UINT64_C(0xC767074B22E90E21)}), 8); + b = r < static_cast(boost::int128::uint128_t {UINT64_C(0x2AF31DC461), UINT64_C(0x1873BF3F70834ACE)}); + s = s * 2U + static_cast(b); + n = b ? r : n; + + r = rotr<128>(n * static_cast(boost::int128::uint128_t {UINT64_C(0x95182A9930BE0DE), UINT64_C(0xD288CE703AFB7E91)}), 4); + b = r < static_cast(boost::int128::uint128_t {UINT64_C(0x68DB8BAC710CB), UINT64_C(0x295E9E1B089A0276)}); + s = s * 2U + static_cast(b); + n = b ? r : n; + + r = rotr<128>(n * static_cast(boost::int128::uint128_t {UINT64_C(0x28F5C28F5C28F5C2), UINT64_C(0x8F5C28F5C28F5C29)}), 2); + b = r < static_cast(boost::int128::uint128_t {UINT64_C(0x28F5C28F5C28F5C), UINT64_C(0x28F5C28F5C28F5C3)}); + s = s * 2U + static_cast(b); + n = b ? r : n; + + r = rotr<128>(n * static_cast(boost::int128::uint128_t {UINT64_C(0xCCCCCCCCCCCCCCCC), UINT64_C(0xCCCCCCCCCCCCCCCD)}), 1); + b = r < static_cast(boost::int128::uint128_t {UINT64_C(0x1999999999999999), UINT64_C(0x999999999999999A)}); + s = s * 2U + static_cast(b); + n = b ? r : n; + + return {n, s}; +} + +#endif + } // namespace detail } // namespace decimal } // namespace boost From ed3d6e26eb022e8830dea14a19f963d7c85632a8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 14:11:13 +0200 Subject: [PATCH 044/967] Add test of addition for near subnormal --- test/github_issue_1026.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index 7dc874172..f1a21281f 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -23,6 +23,8 @@ int main() BOOST_TEST_EQ("2345678.50"_DF, "2345678"_DF); BOOST_TEST_EQ("2345678.51"_DF, "2345679"_DF); + BOOST_TEST_EQ(("0"_DF + "8.4e-96"_DF), "8.4e-96"_DF); + return boost::report_errors(); } From 9092fbc7dd33f60c8cab2b289a6d45fe2a0cbe51 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 14:26:49 +0200 Subject: [PATCH 045/967] Add testing at the denorms --- test/github_issue_1026.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index f1a21281f..fe327133a 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -6,7 +6,7 @@ #include #include -#include +#include using namespace boost::decimal; using namespace boost::decimal::literals; @@ -24,6 +24,8 @@ int main() BOOST_TEST_EQ("2345678.51"_DF, "2345679"_DF); BOOST_TEST_EQ(("0"_DF + "8.4e-96"_DF), "8.4e-96"_DF); + BOOST_TEST_EQ(("0"_DF + std::numeric_limits::denorm_min()), std::numeric_limits::denorm_min()); + BOOST_TEST_EQ((std::numeric_limits::denorm_min() + std::numeric_limits::denorm_min()), 2*std::numeric_limits::denorm_min()); return boost::report_errors(); } From ae61fb624d66c7c740d18882c45bd6cc005f0d37 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 14:27:07 +0200 Subject: [PATCH 046/967] Fix handling of denorms that can be represented --- include/boost/decimal/decimal32_t.hpp | 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index c2126c646..224242b81 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -604,23 +604,11 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) +constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) { static_assert(detail::is_integral_v, "Coefficient must be an integer"); static_assert(detail::is_integral_v, "Exponent must be an integer"); - using unsigned_coeff_type = detail::make_unsigned_t; - - unsigned_coeff_type coeff {}; - BOOST_DECIMAL_IF_CONSTEXPR (detail::is_signed_v) - { - coeff = static_cast(coeff_init < 0 ? -coeff_init : coeff_init); - } - else - { - coeff = static_cast(coeff_init); - } - bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); // If the coeff is not in range, make it so @@ -691,8 +679,8 @@ constexpr decimal32_t::decimal32_t(T1 coeff_init, T2 exp, bool sign) noexcept // } // If the exponent fits we do not need to use the combination field - const auto biased_exp {static_cast(exp + detail::bias)}; - if (biased_exp <= detail::d32_max_biased_exponent) + const auto biased_exp {static_cast(exp + detail::bias)}; + if (BOOST_DECIMAL_LIKELY(biased_exp > 0) && biased_exp <= detail::d32_max_biased_exponent) { if (big_combination) { From 69db8cb64ed3784470c00b7d08408e8a1e4942d5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 15:36:05 +0200 Subject: [PATCH 047/967] Fix construction of subnormals --- include/boost/decimal/decimal32_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 224242b81..a805ba47e 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -680,7 +680,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI // If the exponent fits we do not need to use the combination field const auto biased_exp {static_cast(exp + detail::bias)}; - if (BOOST_DECIMAL_LIKELY(biased_exp > 0) && biased_exp <= detail::d32_max_biased_exponent) + if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= detail::d32_max_biased_exponent)) { if (big_combination) { From 1481375234ae4db8a2e513a1f04d4a58601e998f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 16:33:27 +0200 Subject: [PATCH 048/967] Apply diffs --- include/boost/decimal/decimal32_t.hpp | 45 ++++++++----------- .../boost/decimal/detail/fenv_rounding.hpp | 11 +---- 2 files changed, 20 insertions(+), 36 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index a805ba47e..ecfe68ff6 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -614,44 +614,35 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI // If the coeff is not in range, make it so // Only count the number of digits if we absolutely have to int coeff_digits {-1}; - if (coeff > detail::d32_max_significand_value) + if (coeff > detail::d32_max_significand_value || (exp + detail::bias < 0)) { bool sticky_bit {detail::find_sticky_bit(coeff, exp, detail::bias_v)}; - if (!sticky_bit) + coeff_digits = detail::num_digits(coeff); + if (coeff_digits > detail::precision + 1) { - coeff_digits = detail::num_digits(coeff); - if (coeff_digits > detail::precision + 1) - { - const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif - - if (coeff % detail::pow10(static_cast(digits_to_remove)) != 0u) - { - sticky_bit = true; - } - coeff /= detail::pow10(static_cast(digits_to_remove)); + const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic push + # pragma GCC diagnostic ignored "-Wconversion" + #endif - coeff_digits -= digits_to_remove; - exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)) + digits_to_remove; - } - else + if (coeff % detail::pow10(static_cast(digits_to_remove)) != 0u) { - exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)); + sticky_bit = true; } + coeff /= detail::pow10(static_cast(digits_to_remove)); + + #if defined(__GNUC__) && !defined(__clang__) + # pragma GCC diagnostic pop + #endif + + coeff_digits -= digits_to_remove; + exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)) + digits_to_remove; } else { - // This should already be handled in find_sticky_bit - BOOST_DECIMAL_ASSERT((coeff >= 1'000'000U && coeff <= 9'999'999U) || coeff == 0U); exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)); } } diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 2c5e34d5d..f22ed680e 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -147,24 +147,17 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, co if (biased_exp < 0) { - const auto shift {static_cast(-biased_exp)}; + const auto shift {static_cast(-biased_exp) - 1}; const auto shift_p10 {detail::pow10(shift)}; - const auto shift_p10_min_1 {shift_p10 / 10U}; // TODO(mborland): in the uint128_t case we should expose a div_mod since the mod is already available const auto q {coeff / shift_p10}; const auto rem {coeff % shift_p10}; - auto guard_digits {rem / shift_p10_min_1}; - sticky = (rem % shift_p10) != 0U; + sticky = (rem != 0); coeff = q; exp += static_cast(shift); - - if (guard_digits > 5U || (guard_digits == 5U && (sticky || (static_cast(coeff) & 1U)))) - { - ++coeff; - } } return sticky; From bf4e32a33cdeedafa530400ce1970e07882ae644 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 16:45:47 +0200 Subject: [PATCH 049/967] Fix sign compare error --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index f22ed680e..cebab7079 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -154,7 +154,7 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, co const auto q {coeff / shift_p10}; const auto rem {coeff % shift_p10}; - sticky = (rem != 0); + sticky = (rem != 0U); coeff = q; exp += static_cast(shift); From e3bdd587d60cd8fcb183f16e4762193f7fa95f8b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 17:06:12 +0200 Subject: [PATCH 050/967] Add additional test cases from issue --- test/github_issue_1026.cpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index fe327133a..fc3eabc7d 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -27,6 +27,12 @@ int main() BOOST_TEST_EQ(("0"_DF + std::numeric_limits::denorm_min()), std::numeric_limits::denorm_min()); BOOST_TEST_EQ((std::numeric_limits::denorm_min() + std::numeric_limits::denorm_min()), 2*std::numeric_limits::denorm_min()); + BOOST_TEST_EQ("0"_DF + "8.4e-100"_DF, "8.4e-100"_DF); + BOOST_TEST_EQ("1"_DF * "1e-101"_DF, "1e-101"_DF); + BOOST_TEST_EQ("1e-101"_DF / "1"_DF, "1e-101"_DF); + + BOOST_TEST_EQ("5.24289e-96"_DF / "1"_DF, "5.24289e-96"_DF); + return boost::report_errors(); } From bc5973d32f3a72101cdc21dc55ad0f8b80928611 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 4 Sep 2025 17:32:01 +0200 Subject: [PATCH 051/967] Fix another sign compare error --- include/boost/decimal/decimal32_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index ecfe68ff6..27cbb6598 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -671,7 +671,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI // If the exponent fits we do not need to use the combination field const auto biased_exp {static_cast(exp + detail::bias)}; - if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= detail::d32_max_biased_exponent)) + if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= static_cast(detail::d32_max_biased_exponent))) { if (big_combination) { From 8481b0725c3b440e965afeeec44e36e4e70f8a3a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 09:41:05 +0200 Subject: [PATCH 052/967] Increase number of fractional digits retained from division --- include/boost/decimal/detail/div_impl.hpp | 27 +++++++++++------------ 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/include/boost/decimal/detail/div_impl.hpp b/include/boost/decimal/detail/div_impl.hpp index 688d936f1..ce269fb62 100644 --- a/include/boost/decimal/detail/div_impl.hpp +++ b/include/boost/decimal/detail/div_impl.hpp @@ -21,25 +21,24 @@ namespace detail { template BOOST_DECIMAL_FORCE_INLINE constexpr auto generic_div_impl(const T& lhs, const T& rhs) noexcept -> DecimalType { - bool sign {lhs.sign != rhs.sign}; - // If rhs is greater than we need to offset the significands to get the correct values // e.g. 4/8 is 0 but 40/8 yields 5 in integer maths - constexpr auto ten_pow_precision {detail::pow10(static_cast(detail::precision))}; - const auto big_sig_lhs {static_cast(lhs.sig) * ten_pow_precision}; + // + // By expanding the offset to all the way to the value of numeric_limits::digits10 + // we can recover more of what would become the fraction to achieve better rounding - auto res_sig {big_sig_lhs / static_cast(rhs.sig)}; - auto res_exp {(lhs.exp - detail::precision) - rhs.exp}; + using div_type = std::uint64_t; - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "\nres sig: " << res_sig_32 - << "\nres exp: " << res_exp << std::endl; - #endif + constexpr auto precision_offset {std::numeric_limits::digits10 - precision}; + constexpr auto ten_pow_offset {detail::pow10(static_cast(precision_offset))}; - if (res_sig == 0U) - { - sign = false; - } + const bool sign {lhs.sign != rhs.sign}; + + const auto big_sig_lhs {lhs.sig * ten_pow_offset}; + BOOST_DECIMAL_ASSERT(big_sig_lhs != 0U); // This case should have been filtered out by fpclassify + + const auto res_sig {big_sig_lhs / rhs.sig}; + const auto res_exp {(lhs.exp - precision_offset) - rhs.exp}; // Let the constructor handle shrinking it back down and rounding correctly return DecimalType{res_sig, res_exp, sign}; From 8146c651be3087882bd54ccd2d78e17b94656a3a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 09:41:12 +0200 Subject: [PATCH 053/967] Add test case --- test/github_issue_1026.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index fc3eabc7d..015047eef 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -33,6 +33,8 @@ int main() BOOST_TEST_EQ("5.24289e-96"_DF / "1"_DF, "5.24289e-96"_DF); + BOOST_TEST_EQ("1"_DF / "5.24289e-96"_DF, "1.907345e+95"_DF); + return boost::report_errors(); } From 23421c049b3c93b8fa60e234013be57405e49e47 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 09:46:55 +0200 Subject: [PATCH 054/967] Normalize sign handling --- include/boost/decimal/detail/div_impl.hpp | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/detail/div_impl.hpp b/include/boost/decimal/detail/div_impl.hpp index ce269fb62..74ae5ccd7 100644 --- a/include/boost/decimal/detail/div_impl.hpp +++ b/include/boost/decimal/detail/div_impl.hpp @@ -32,14 +32,18 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto generic_div_impl(const T& lhs, const T constexpr auto precision_offset {std::numeric_limits::digits10 - precision}; constexpr auto ten_pow_offset {detail::pow10(static_cast(precision_offset))}; - const bool sign {lhs.sign != rhs.sign}; - const auto big_sig_lhs {lhs.sig * ten_pow_offset}; - BOOST_DECIMAL_ASSERT(big_sig_lhs != 0U); // This case should have been filtered out by fpclassify const auto res_sig {big_sig_lhs / rhs.sig}; const auto res_exp {(lhs.exp - precision_offset) - rhs.exp}; + // Normalizes sign handling + bool sign {lhs.sign != rhs.sign}; + if (BOOST_DECIMAL_UNLIKELY(res_sig == 0U)) + { + sign = false; + } + // Let the constructor handle shrinking it back down and rounding correctly return DecimalType{res_sig, res_exp, sign}; } From 3ae5be630da5c5761c803335cbb57543bf601a77 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 12:10:37 +0200 Subject: [PATCH 055/967] Reduce complexity --- include/boost/decimal/decimal32_t.hpp | 52 ++++++++++++--------------- 1 file changed, 23 insertions(+), 29 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 27cbb6598..b2757bc02 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -614,37 +614,32 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI // If the coeff is not in range, make it so // Only count the number of digits if we absolutely have to int coeff_digits {-1}; - if (coeff > detail::d32_max_significand_value || (exp + detail::bias < 0)) + auto biased_exp {static_cast(exp + detail::bias)}; + if (coeff > detail::d32_max_significand_value || biased_exp < 0) { - bool sticky_bit {detail::find_sticky_bit(coeff, exp, detail::bias_v)}; - coeff_digits = detail::num_digits(coeff); - if (coeff_digits > detail::precision + 1) - { - const auto digits_to_remove {coeff_digits - (detail::precision + 1)}; - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif - - if (coeff % detail::pow10(static_cast(digits_to_remove)) != 0u) - { - sticky_bit = true; - } - coeff /= detail::pow10(static_cast(digits_to_remove)); - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif - coeff_digits -= digits_to_remove; - exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)) + digits_to_remove; - } - else - { - exp += static_cast(detail::fenv_round(coeff, sign, sticky_bit)); - } + // How many digits need to be shifted? + const auto shift_for_small_exp {(-biased_exp) - 1}; + const auto shift_for_large_coeff {(coeff_digits - detail::precision) - 1}; + const auto shift {std::max(shift_for_small_exp, shift_for_large_coeff)}; + + // Do shifting + const auto shift_pow_ten {detail::pow10(static_cast(shift))}; + const auto shifted_coeff {coeff / shift_pow_ten}; + const auto trailing_digits {coeff % shift_pow_ten}; + + coeff = shifted_coeff; + const auto sticky {trailing_digits != 0u}; + exp += shift; + biased_exp += shift; + coeff_digits -= shift; + + // Do rounding + auto removed_digits = detail::fenv_round(coeff, sign, sticky); + exp += removed_digits; + biased_exp += removed_digits; + coeff_digits -= removed_digits; } auto reduced_coeff {static_cast(coeff)}; @@ -670,7 +665,6 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI } // If the exponent fits we do not need to use the combination field - const auto biased_exp {static_cast(exp + detail::bias)}; if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= static_cast(detail::d32_max_biased_exponent))) { if (big_combination) From e2ed30f351dba481b102edfb971c17c7a077a08a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 12:11:45 +0200 Subject: [PATCH 056/967] Delete now unused function --- .../boost/decimal/detail/fenv_rounding.hpp | 40 ------------------- 1 file changed, 40 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index cebab7079..ec304a935 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -123,46 +123,6 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex #endif -template -BOOST_DECIMAL_FORCE_INLINE constexpr auto find_sticky_bit(T1& coeff, T2& exp, const int exp_bias) noexcept -{ - bool sticky {false}; - - #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION - - if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(coeff)) - { - // If we are in a rounding mode that does not depend on the sticky bit opt out early - // Unlikely that the user sets the global rounding mode anyway - if (BOOST_DECIMAL_UNLIKELY(_boost_decimal_global_rounding_mode == rounding_mode::fe_dec_to_nearest_from_zero || - _boost_decimal_global_rounding_mode == rounding_mode::fe_dec_toward_zero)) - { - return sticky; - } - } - - #endif - - const auto biased_exp {exp + exp_bias}; - - if (biased_exp < 0) - { - const auto shift {static_cast(-biased_exp) - 1}; - const auto shift_p10 {detail::pow10(shift)}; - - // TODO(mborland): in the uint128_t case we should expose a div_mod since the mod is already available - const auto q {coeff / shift_p10}; - const auto rem {coeff % shift_p10}; - - sticky = (rem != 0U); - - coeff = q; - exp += static_cast(shift); - } - - return sticky; -} - } // namespace detail } // namespace decimal } // namespace boost From 2737e00da2c33e5f5f2c4c13a17618e1cbaa4335 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 12:18:10 +0200 Subject: [PATCH 057/967] Add additional test from discussion --- test/github_issue_1026.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index 015047eef..ccde74b20 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -35,6 +35,10 @@ int main() BOOST_TEST_EQ("1"_DF / "5.24289e-96"_DF, "1.907345e+95"_DF); + const auto new_rounding_mode = fesetround(rounding_mode::fe_dec_to_nearest_from_zero); + BOOST_TEST(new_rounding_mode == rounding_mode::fe_dec_to_nearest_from_zero); + BOOST_TEST_EQ(decimal32_t(100000, -105), "1e-100"_df); + return boost::report_errors(); } From 0428801b3deaf66f8981718e4903f0b48b7e5852 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 12:38:59 +0200 Subject: [PATCH 058/967] Move rounding method into its own function for easier resuse --- include/boost/decimal/decimal32_t.hpp | 24 +------------- .../boost/decimal/detail/fenv_rounding.hpp | 31 +++++++++++++++++++ 2 files changed, 32 insertions(+), 23 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index b2757bc02..21a96c750 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -617,29 +617,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI auto biased_exp {static_cast(exp + detail::bias)}; if (coeff > detail::d32_max_significand_value || biased_exp < 0) { - coeff_digits = detail::num_digits(coeff); - - // How many digits need to be shifted? - const auto shift_for_small_exp {(-biased_exp) - 1}; - const auto shift_for_large_coeff {(coeff_digits - detail::precision) - 1}; - const auto shift {std::max(shift_for_small_exp, shift_for_large_coeff)}; - - // Do shifting - const auto shift_pow_ten {detail::pow10(static_cast(shift))}; - const auto shifted_coeff {coeff / shift_pow_ten}; - const auto trailing_digits {coeff % shift_pow_ten}; - - coeff = shifted_coeff; - const auto sticky {trailing_digits != 0u}; - exp += shift; - biased_exp += shift; - coeff_digits -= shift; - - // Do rounding - auto removed_digits = detail::fenv_round(coeff, sign, sticky); - exp += removed_digits; - biased_exp += removed_digits; - coeff_digits -= removed_digits; + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign); } auto reduced_coeff {static_cast(coeff)}; diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index ec304a935..797a542f4 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -10,6 +10,7 @@ #include #include #include +#include namespace boost { namespace decimal { @@ -123,6 +124,36 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex #endif +template +BOOST_DECIMAL_FORCE_INLINE constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bool sign) noexcept +{ + auto coeff_digits {detail::num_digits(coeff)}; + + // How many digits need to be shifted? + const auto shift_for_small_exp {(-biased_exp) - 1}; + const auto shift_for_large_coeff {(coeff_digits - detail::precision_v) - 1}; + const auto shift {std::max(shift_for_small_exp, shift_for_large_coeff)}; + + // Do shifting + const auto shift_pow_ten {detail::pow10(static_cast(shift))}; + const auto shifted_coeff {coeff / shift_pow_ten}; + const auto trailing_digits {coeff % shift_pow_ten}; + + coeff = shifted_coeff; + const auto sticky {trailing_digits != 0u}; + exp += shift; + biased_exp += shift; + coeff_digits -= shift; + + // Do rounding + const auto removed_digits {detail::fenv_round(coeff, sign, sticky)}; + exp += removed_digits; + biased_exp += removed_digits; + coeff_digits -= removed_digits; + + return coeff_digits; +} + } // namespace detail } // namespace decimal } // namespace boost From 67342d65fa5ae4f4ff906240c8f35d3252dc60ea Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 13:05:30 +0200 Subject: [PATCH 059/967] Add bounds check resulting in a coefficient being shifted to 0 --- include/boost/decimal/detail/fenv_rounding.hpp | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 797a542f4..d6b144e72 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -134,6 +134,13 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto coefficient_rounding(T1& coeff, T2& ex const auto shift_for_large_coeff {(coeff_digits - detail::precision_v) - 1}; const auto shift {std::max(shift_for_small_exp, shift_for_large_coeff)}; + if (BOOST_DECIMAL_UNLIKELY(shift > std::numeric_limits::digits10)) + { + // Bounds check for our tables in pow10 + coeff = 0; + return 1; + } + // Do shifting const auto shift_pow_ten {detail::pow10(static_cast(shift))}; const auto shifted_coeff {coeff / shift_pow_ten}; From 0bd7dcd585712b834e3dee4e0a3dd9c9cce187b5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 15:10:08 +0200 Subject: [PATCH 060/967] Slightly loosen tol --- test/test_cosh.cpp | 4 ++-- test/test_expm1.cpp | 4 ++-- test/test_sinh.cpp | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/test/test_cosh.cpp b/test/test_cosh.cpp index 6ea567867..71e611cfc 100644 --- a/test/test_cosh.cpp +++ b/test/test_cosh.cpp @@ -339,8 +339,8 @@ auto main() -> int { auto result_is_ok = true; - const auto result_pos_is_ok = local::test_cosh(96, false, 0.03125L, 32.0L); - const auto result_neg_is_ok = local::test_cosh(96, true, 0.03125L, 32.0L); + const auto result_pos_is_ok = local::test_cosh(128, false, 0.03125L, 32.0L); + const auto result_neg_is_ok = local::test_cosh(128, true, 0.03125L, 32.0L); const auto result_pos_narrow_is_ok = local::test_cosh(24, false, 0.125L, 8.0L); const auto result_neg_narrow_is_ok = local::test_cosh(24, true, 0.125L, 8.0L); diff --git a/test/test_expm1.cpp b/test/test_expm1.cpp index da22e8bb7..573c762b6 100644 --- a/test/test_expm1.cpp +++ b/test/test_expm1.cpp @@ -326,8 +326,8 @@ auto main() -> int { auto result_is_ok = true; - const auto result_pos_is_ok = local::test_expm1(96, false, 0.03125L, 32.0L); - const auto result_neg_is_ok = local::test_expm1(96, true, 0.03125L, 32.0L); + const auto result_pos_is_ok = local::test_expm1(128, false, 0.03125L, 32.0L); + const auto result_neg_is_ok = local::test_expm1(128, true, 0.03125L, 32.0L); const auto result_pos_narrow_is_ok = local::test_expm1(24, false, 0.125L, 8.0L); const auto result_neg_narrow_is_ok = local::test_expm1(24, true, 0.125L, 8.0L); diff --git a/test/test_sinh.cpp b/test/test_sinh.cpp index 8113f929e..9d8d5fcf2 100644 --- a/test/test_sinh.cpp +++ b/test/test_sinh.cpp @@ -338,8 +338,8 @@ auto main() -> int { auto result_is_ok = true; - const auto result_pos_is_ok = local::test_sinh(96, false, 0.03125L, 32.0L); - const auto result_neg_is_ok = local::test_sinh(96, true, 0.03125L, 32.0L); + const auto result_pos_is_ok = local::test_sinh(128, false, 0.03125L, 32.0L); + const auto result_neg_is_ok = local::test_sinh(128, true, 0.03125L, 32.0L); const auto result_pos_narrow_is_ok = local::test_sinh(24, false, 0.125L, 8.0L); const auto result_neg_narrow_is_ok = local::test_sinh(24, true, 0.125L, 8.0L); From 89c91ae73f479befa47cc32a17d369539825309f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 15:14:18 +0200 Subject: [PATCH 061/967] Disable rounding mode dependent tests on platforms without consteval --- test/random_decimal32_math.cpp | 6 +++++- test/test_to_chars.cpp | 4 ++++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/test/random_decimal32_math.cpp b/test/random_decimal32_math.cpp index 164834be8..03656427d 100644 --- a/test/random_decimal32_math.cpp +++ b/test/random_decimal32_math.cpp @@ -942,8 +942,11 @@ void spot_mixed_division(T val1, T val2) int main() { // Match the rounding mode of integers - fesetround(rounding_mode::fe_dec_to_nearest_from_zero); + #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + return 0; + #else + fesetround(rounding_mode::fe_dec_to_nearest_from_zero); // Values that won't exceed the range of the significand // Only positive values random_addition(0, 5'000'000); @@ -1077,6 +1080,7 @@ int main() spot_mixed_division(-20902, -2810); return boost::report_errors(); + #endif } #ifdef _MSC_VER diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index c9c067089..4d6e0605b 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -1000,6 +1000,9 @@ consteval int consteval_zero_test() int main() { // TODO(mborland): While building out sticky bits this is the best way to synchronize results across types + #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + return 0; + #else fesetround(rounding_mode::fe_dec_to_nearest_from_zero); test_non_finite_values(); @@ -1166,6 +1169,7 @@ int main() #endif return boost::report_errors(); + #endif } #else From 06f26ee7e0fdf577ec9577a1768916099ec8bc64 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 15:43:37 +0200 Subject: [PATCH 062/967] Fix GCC conversion warnings --- include/boost/decimal/decimal32_t.hpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 21a96c750..90239e301 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -647,11 +647,11 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI { if (big_combination) { - bits_ |= (biased_exp << detail::d32_11_exp_shift) & detail::d32_11_exp_mask; + bits_ |= (static_cast(biased_exp) << detail::d32_11_exp_shift) & detail::d32_11_exp_mask; } else { - bits_ |= (biased_exp << detail::d32_not_11_exp_shift) & detail::d32_not_11_exp_mask; + bits_ |= (static_cast(biased_exp) << detail::d32_not_11_exp_shift) & detail::d32_not_11_exp_mask; } } else @@ -664,8 +664,8 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI coeff_digits = detail::num_digits(reduced_coeff); } - const auto exp_delta {biased_exp - detail::d32_max_biased_exponent}; - const auto digit_delta {coeff_digits - static_cast(exp_delta)}; + const auto exp_delta {biased_exp - static_cast(detail::d32_max_biased_exponent)}; + const auto digit_delta {coeff_digits - exp_delta}; if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision) { exp -= digit_delta; From 7751e29b9811b8d13263aad1e537756b82630b11 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 15:52:21 +0200 Subject: [PATCH 063/967] Increase precision of big argument --- include/boost/decimal/detail/add_impl.hpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index d18bf667f..57902462d 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -37,7 +37,7 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType // Align to larger exponent if (lhs_exp != rhs_exp) { - constexpr auto max_shift {detail::make_positive_unsigned(detail::precision_v + 1)}; + constexpr auto max_shift {detail::make_positive_unsigned(std::numeric_limits::digits10 - detail::precision_v)}; const auto shift {detail::make_positive_unsigned(lhs_exp - rhs_exp)}; if (shift > max_shift) @@ -46,7 +46,8 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; } - else if (lhs_exp < rhs_exp) + + if (lhs_exp < rhs_exp) { big_rhs *= detail::pow10(shift); lhs_exp = rhs_exp - static_cast(shift); From 9eb1c6d0a9a2437f25a0c58e39219545b54dfa73 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 16:21:23 +0200 Subject: [PATCH 064/967] Add test set from issue --- test/Jamfile | 1 + test/github_issue_1035.cpp | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) create mode 100644 test/github_issue_1035.cpp diff --git a/test/Jamfile b/test/Jamfile index 0a1d2daec..49cebddfb 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -63,6 +63,7 @@ run github_issue_900.cpp ; run github_issue_911.cpp ; run github_issue_988.cpp ; run github_issue_1026.cpp ; +run github_issue_1035.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; run random_decimal32_comp.cpp ; diff --git a/test/github_issue_1035.cpp b/test/github_issue_1035.cpp new file mode 100644 index 000000000..01e82d079 --- /dev/null +++ b/test/github_issue_1035.cpp @@ -0,0 +1,28 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1035 + +#include +#include + +using namespace boost::decimal; +using namespace boost::decimal::literals; + +int main() +{ + #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + return 0; + #else + + fesetround(rounding_mode::fe_dec_downward); + BOOST_TEST_EQ("5e+50"_DF - "4e+40"_DF, "4.999999e+50"_DF); + + fesetround(rounding_mode::fe_dec_upward); + BOOST_TEST_EQ("5e+50"_DF + "4e+40"_DF, "5.000001e+50"_DF); + + return boost::report_errors(); + + #endif +} From af34964dea71b8cdc25ac6bacb11da5e2efd2f34 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 16:21:44 +0200 Subject: [PATCH 065/967] Remove optimized, but incorrect impl --- include/boost/decimal/decimal_fast32_t.hpp | 23 +------- include/boost/decimal/detail/add_impl.hpp | 65 ---------------------- 2 files changed, 2 insertions(+), 86 deletions(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index ad2632963..7a1e8c26d 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -121,9 +121,6 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template friend constexpr auto detail::d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; - template - friend constexpr auto detail::d32_fast_add_only_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; - template BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; @@ -776,15 +773,7 @@ constexpr auto operator+(const decimal_fast32_t lhs, const decimal_fast32_t rhs) } #endif - if (lhs.isneg() || rhs.isneg()) - { - return detail::d32_add_impl(lhs, rhs); - } - else - { - const auto res {detail::d32_fast_add_only_impl(lhs, rhs)}; - return direct_init(res); - } + return detail::d32_add_impl(lhs, rhs); } template @@ -829,15 +818,7 @@ constexpr auto operator-(const decimal_fast32_t lhs, decimal_fast32_t rhs) noexc rhs.sign_ = !rhs.sign_; - if (lhs.sign_ || rhs.sign_) - { - return detail::d32_add_impl(lhs, rhs); - } - else - { - const auto res {detail::d32_fast_add_only_impl(lhs, rhs)}; - return direct_init(res); - } + return detail::d32_add_impl(lhs, rhs); } template diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 57902462d..76204bf5e 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -68,71 +68,6 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType return ReturnType{new_sig, lhs_exp}; } -template -constexpr auto d32_fast_add_only_impl(const T& lhs, const T& rhs) noexcept -> ReturnType -{ - // Each of the significands is maximally 23 bits. - // Rather than doing division to get proper alignment we will promote to 64 bits - // And do a single mul followed by an add - using promoted_sig_type = std::uint_fast64_t; - - int max_result_digits_overage {1}; - - promoted_sig_type big_lhs {lhs.full_significand()}; - promoted_sig_type big_rhs {rhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - const auto rhs_exp {rhs.biased_exponent()}; - - // Align to larger exponent - if (lhs_exp != rhs_exp) - { - constexpr auto max_shift {detail::make_positive_unsigned(detail::precision_v + 1)}; - const auto shift {detail::make_positive_unsigned(lhs_exp - rhs_exp)}; - - if (shift > max_shift) - { - return big_lhs != 0U && (lhs_exp > rhs_exp) ? - ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : - ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; - } - - if (lhs_exp < rhs_exp) - { - big_rhs *= detail::pow10(shift); - lhs_exp = rhs_exp - static_cast(shift); - } - else - { - big_lhs *= detail::pow10(shift); - lhs_exp -= static_cast(shift); - } - - max_result_digits_overage = static_cast(shift); - } - - auto res_sig {big_lhs + big_rhs}; - - constexpr promoted_sig_type max_non_normalized_value {9'999'999U}; - if (res_sig > max_non_normalized_value) - { - constexpr promoted_sig_type max_non_compensated_value {99'999'999U}; - if (res_sig > max_non_compensated_value) - { - const auto offset_power {max_result_digits_overage == 1 ? 1 : max_result_digits_overage - 1}; - const auto offset {detail::pow10(static_cast(offset_power))}; - res_sig /= offset; - lhs_exp += offset_power; - } - - lhs_exp += detail::fenv_round(res_sig, false); - } - - BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000U || res_sig == 0U); - BOOST_DECIMAL_ASSERT(res_sig <= max_non_normalized_value || res_sig == 0U); - - return ReturnType{static_cast(res_sig), lhs_exp, false}; -} - template constexpr auto d32_add_impl(T lhs_sig, U lhs_exp, bool lhs_sign, T rhs_sig, U rhs_exp, bool rhs_sign) noexcept -> ReturnType From 8a69d2a76629197af92feb7038958b7a3050aa2f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 5 Sep 2025 16:34:09 +0200 Subject: [PATCH 066/967] Reduce code duplication --- include/boost/decimal/decimal32_t.hpp | 27 +++++++------ include/boost/decimal/decimal_fast32_t.hpp | 12 +++--- include/boost/decimal/detail/add_impl.hpp | 45 ---------------------- include/boost/decimal/detail/cmath/fma.hpp | 4 +- 4 files changed, 23 insertions(+), 65 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 90239e301..0893a2750 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -815,8 +815,9 @@ constexpr auto operator+(const decimal32_t lhs, const Integer rhs) noexcept // Make the significand type wide enough that it won't overflow during normalization auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; + const auto components {lhs.to_components()}; + auto sig_lhs {components.sig}; + auto exp_lhs {components.exp}; detail::normalize(sig_lhs, exp_lhs); exp_type exp_rhs {0}; @@ -825,8 +826,8 @@ constexpr auto operator+(const decimal32_t lhs, const Integer rhs) noexcept // Now that the rhs has been normalized, it is guaranteed to fit into the decimal32_t significand type const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - return detail::d32_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, (rhs < 0)); + return detail::d32_add_impl(detail::decimal32_t_components{sig_lhs, exp_lhs, components.sign}, + detail::decimal32_t_components{final_sig_rhs, exp_rhs, (rhs < 0)}); } template @@ -906,16 +907,17 @@ constexpr auto operator-(const decimal32_t lhs, const Integer rhs) noexcept auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; + const auto components {lhs.to_components()}; + auto sig_lhs {components.sig}; + auto exp_lhs {components.exp}; detail::normalize(sig_lhs, exp_lhs); exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d32_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, !(rhs < 0)); + return detail::d32_add_impl(detail::decimal32_t_components{sig_lhs, exp_lhs, components.sign}, + detail::decimal32_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)}); } template @@ -938,12 +940,13 @@ constexpr auto operator-(const Integer lhs, const decimal32_t rhs) noexcept detail::normalize(sig_lhs, exp_lhs); const auto final_sig_lhs {static_cast(sig_lhs)}; - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; + const auto components {rhs.to_components()}; + auto sig_rhs {components.sig}; + auto exp_rhs {components.exp}; detail::normalize(sig_rhs, exp_rhs); - return detail::d32_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), - sig_rhs, exp_rhs, !rhs.isneg()); + return detail::d32_add_impl(detail::decimal32_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, + detail::decimal32_t_components{sig_rhs, exp_rhs, !components.sign}); } constexpr auto decimal32_t::operator--() noexcept -> decimal32_t& diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 7a1e8c26d..c97ca79cc 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -796,8 +796,8 @@ constexpr auto operator+(const decimal_fast32_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - return detail::d32_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, (rhs < 0)); + return detail::d32_add_impl(detail::decimal_fast32_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, + detail::decimal_fast32_t_components{final_sig_rhs, exp_rhs, (rhs < 0)}); } template @@ -842,8 +842,8 @@ constexpr auto operator-(const decimal_fast32_t lhs, const Integer rhs) noexcept auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; return detail::d32_add_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, !(rhs < 0)); + detail::decimal_fast32_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, + detail::decimal_fast32_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)}); } template @@ -867,8 +867,8 @@ constexpr auto operator-(const Integer lhs, const decimal_fast32_t rhs) noexcept auto final_sig_lhs {static_cast(detail::make_positive_unsigned(sig_lhs))}; return detail::d32_add_impl( - final_sig_lhs, exp_lhs, (lhs < 0), - rhs.significand_, rhs.biased_exponent(), !rhs.sign_ + detail::decimal_fast32_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, + detail::decimal_fast32_t_components{rhs.significand_, rhs.biased_exponent(), !rhs.sign_} ); } diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 76204bf5e..d4af361c3 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -68,51 +68,6 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType return ReturnType{new_sig, lhs_exp}; } -template -constexpr auto d32_add_impl(T lhs_sig, U lhs_exp, bool lhs_sign, - T rhs_sig, U rhs_exp, bool rhs_sign) noexcept -> ReturnType -{ - // Each of the significands is maximally 23 bits. - // Rather than doing division to get proper alignment we will promote to 64 bits - // And do a single mul followed by an add - using add_type = std::int_fast64_t; - using promoted_sig_type = std::uint_fast64_t; - - promoted_sig_type big_lhs {lhs_sig}; - promoted_sig_type big_rhs {rhs_sig}; - - // Align to larger exponent - if (lhs_exp != rhs_exp) - { - constexpr auto max_shift {detail::make_positive_unsigned(detail::precision_v + 1)}; - const auto shift {detail::make_positive_unsigned(lhs_exp - rhs_exp)}; - - if (shift > max_shift) - { - return lhs_sig != 0U && (lhs_exp > rhs_exp) ? ReturnType{lhs_sig, lhs_exp, lhs_sign} : ReturnType{rhs_sig, rhs_exp, rhs_sign}; - } - - if (lhs_exp < rhs_exp) - { - big_rhs *= detail::pow10(shift); - lhs_exp = rhs_exp - static_cast(shift); - } - else - { - big_lhs *= detail::pow10(shift); - lhs_exp -= static_cast(shift); - } - } - - // Perform signed addition with overflow protection - const auto signed_lhs {detail::make_signed_value(static_cast(big_lhs), lhs_sign)}; - const auto signed_rhs {detail::make_signed_value(static_cast(big_rhs), rhs_sign)}; - - const auto new_sig {signed_lhs + signed_rhs}; - - return {new_sig, lhs_exp}; -} - template constexpr auto d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType { diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index 5b30fc340..22bd14311 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -76,8 +76,8 @@ constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T auto sig_z = frexp10(z, &exp_z); detail::normalize(first_res.sig, first_res.exp); - return detail::d32_add_impl(first_res.sig, first_res.exp, first_res.sign, - sig_z, static_cast(exp_z), z < 0); + return detail::d32_add_impl(T_components_type{first_res.sig, first_res.exp, first_res.sign}, + T_components_type{sig_z, static_cast(exp_z), z < 0}); } template From 2e73155e2767e4760b27d4a793ce45bd013ff3f3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 10:36:48 +0200 Subject: [PATCH 067/967] Combine issue 1036 --- test/github_issue_1035.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/test/github_issue_1035.cpp b/test/github_issue_1035.cpp index 01e82d079..48c4e05a5 100644 --- a/test/github_issue_1035.cpp +++ b/test/github_issue_1035.cpp @@ -12,15 +12,20 @@ using namespace boost::decimal::literals; int main() { + const auto previously_inf {"5e+95"_DF}; + BOOST_TEST_EQ(previously_inf, "500000e+90"_DF); + #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION - return 0; + return boost::report_errors();; #else fesetround(rounding_mode::fe_dec_downward); BOOST_TEST_EQ("5e+50"_DF - "4e+40"_DF, "4.999999e+50"_DF); + BOOST_TEST_EQ("5e+95"_DF - "4e-100"_DF, "4.999999e+95"_DF); fesetround(rounding_mode::fe_dec_upward); BOOST_TEST_EQ("5e+50"_DF + "4e+40"_DF, "5.000001e+50"_DF); + BOOST_TEST_EQ("5e+95"_DF + "4e-100"_DF, "5.000001e+95"_DF); return boost::report_errors(); From 44392059b924024a78e94c11059bf5ba19147c11 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 10:43:02 +0200 Subject: [PATCH 068/967] Expand the significand to offset exp if possible --- include/boost/decimal/decimal32_t.hpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 0893a2750..c42e1d82b 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -672,6 +672,14 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI reduced_coeff *= detail::pow10(static_cast(digit_delta)); *this = decimal32_t(reduced_coeff, exp, sign); } + else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision) + { + // We can expand the coefficient to use the maximum number of digits + const auto offset {detail::precision - coeff_digits}; + exp -= offset; + reduced_coeff *= detail::pow10(static_cast(offset)); + *this = decimal32_t(reduced_coeff, exp, sign); + } else { bits_ = exp < 0 ? UINT32_C(0) : detail::d32_inf_mask; From 38056e3c7935b4ed1d2d9390d5f5d678e1851d6a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 10:55:08 +0200 Subject: [PATCH 069/967] Add the negative cases --- test/github_issue_1035.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/test/github_issue_1035.cpp b/test/github_issue_1035.cpp index 48c4e05a5..cd085d22d 100644 --- a/test/github_issue_1035.cpp +++ b/test/github_issue_1035.cpp @@ -16,16 +16,18 @@ int main() BOOST_TEST_EQ(previously_inf, "500000e+90"_DF); #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION - return boost::report_errors();; + return boost::report_errors(); #else fesetround(rounding_mode::fe_dec_downward); BOOST_TEST_EQ("5e+50"_DF - "4e+40"_DF, "4.999999e+50"_DF); BOOST_TEST_EQ("5e+95"_DF - "4e-100"_DF, "4.999999e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DF + "4e-100"_DF, "-4.999999e+95"_DF); fesetround(rounding_mode::fe_dec_upward); BOOST_TEST_EQ("5e+50"_DF + "4e+40"_DF, "5.000001e+50"_DF); BOOST_TEST_EQ("5e+95"_DF + "4e-100"_DF, "5.000001e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DF - "4e-100"_DF, "-5.000001e+95"_DF); return boost::report_errors(); From ac4be9ef6868c7fddec636703c31a36a74faf3f7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 11:03:02 +0200 Subject: [PATCH 070/967] Add rounding while adding depending on the mode --- include/boost/decimal/detail/add_impl.hpp | 52 ++++++++++++++++++++++- 1 file changed, 50 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index d4af361c3..ff3cd888b 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -20,6 +20,11 @@ namespace boost { namespace decimal { namespace detail { +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4127) // Conditional expression is constant +#endif + template constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType { @@ -42,9 +47,48 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType if (shift > max_shift) { + #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + return big_lhs != 0U && (lhs_exp > rhs_exp) ? - ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : - ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; + ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : + ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; + + #else + + auto round {rounding_mode::fe_dec_default}; + + if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(lhs)) + { + round = fegetround(); + } + + if (BOOST_DECIMAL_LIKELY(round != rounding_mode::fe_dec_downward && round != rounding_mode::fe_dec_upward)) + { + return big_lhs != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : + ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; + } + else if (round == rounding_mode::fe_dec_downward) + { + // If we are subtracting even disparate numbers we need to round down + // E.g. "5e+95"_DF - "4e-100"_DF == "4.999999e+95"_DF + + using sig_type = typename T::significand_type; + + return big_lhs != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs.full_significand() - static_cast(lhs.isneg() != rhs.isneg()), lhs.biased_exponent(), lhs.isneg()} : + ReturnType{rhs.full_significand() - static_cast(lhs.isneg() != rhs.isneg()), rhs.biased_exponent(), rhs.isneg()}; + } + else + { + // rounding mode == fe_dec_upward + // Unconditionally round up. Could be 5e+95 + 4e-100 -> 5.000001e+95 + return big_lhs != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs.full_significand() + 1U, lhs.biased_exponent(), lhs.isneg()} : + ReturnType{rhs.full_significand() + 1U, rhs.biased_exponent(), rhs.isneg()}; + } + + #endif // BOOST_DECIMAL_NO_CONSTEVAL_DETECTION } if (lhs_exp < rhs_exp) @@ -68,6 +112,10 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType return ReturnType{new_sig, lhs_exp}; } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + template constexpr auto d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType { From a4aea3d12ed393b10c8773fdf83820bda13370a5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 11:34:24 +0200 Subject: [PATCH 071/967] Avoid wraparound --- include/boost/decimal/detail/add_impl.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index ff3cd888b..f98958af9 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -42,7 +42,7 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType // Align to larger exponent if (lhs_exp != rhs_exp) { - constexpr auto max_shift {detail::make_positive_unsigned(std::numeric_limits::digits10 - detail::precision_v)}; + constexpr auto max_shift {detail::make_positive_unsigned(std::numeric_limits::digits10 - detail::precision_v - 1)}; const auto shift {detail::make_positive_unsigned(lhs_exp - rhs_exp)}; if (shift > max_shift) From edc4c6f538b3261c4e23b7631039c6a7346fff6d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 12:03:04 +0200 Subject: [PATCH 072/967] Fix rounding and construction for decimal64_t --- include/boost/decimal/decimal64_t.hpp | 37 ++++++++------------------- 1 file changed, 11 insertions(+), 26 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 1c8df2639..b0033a8c4 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -608,31 +608,10 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept // If the coeff is not in range, make it so int coeff_digits {-1}; - if (coeff > detail::d64_max_significand_value) + auto biased_exp {static_cast(exp) + detail::bias_v}; + if (coeff > detail::d64_max_significand_value || biased_exp < 0) { - coeff_digits = detail::d64_constructor_num_digits(coeff); - if (coeff_digits > detail::precision_v + 1) - { - const auto digits_to_remove {coeff_digits - (detail::precision_v + 1)}; - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif - - coeff /= detail::pow10(static_cast(digits_to_remove)); - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif - - coeff_digits -= digits_to_remove; - exp += detail::fenv_round(coeff, sign) + digits_to_remove; - } - else - { - exp += detail::fenv_round(coeff, sign); - } + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign); } auto reduced_coeff {static_cast(coeff)}; @@ -658,8 +637,7 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept } // If the exponent fits, we do not need to use the combination field - const auto biased_exp {static_cast(exp + detail::bias_v)}; - if (biased_exp <= detail::d64_max_biased_exponent) + if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= detail::d64_max_biased_exponent)) { if (big_combination) { @@ -688,6 +666,13 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept reduced_coeff *= detail::pow10(static_cast(digit_delta)); *this = decimal64_t(reduced_coeff, exp, sign); } + else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision_v) + { + const auto offset {detail::precision_v - coeff_digits}; + exp -= offset; + reduced_coeff *= detail::pow10(static_cast(offset)); + *this = decimal64_t(reduced_coeff, exp, sign); + } else { bits_ = exp < 0 ? UINT64_C(0) : detail::d64_inf_mask; From 4dc3e6f92832a9bba8d45b5bf0acef092677043d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 12:08:37 +0200 Subject: [PATCH 073/967] Pass type to fenv_round --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index d6b144e72..be12a9282 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -153,7 +153,7 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto coefficient_rounding(T1& coeff, T2& ex coeff_digits -= shift; // Do rounding - const auto removed_digits {detail::fenv_round(coeff, sign, sticky)}; + const auto removed_digits {detail::fenv_round(coeff, sign, sticky)}; exp += removed_digits; biased_exp += removed_digits; coeff_digits -= removed_digits; From 65dd952f2a13df4378952f4a02a6695ac83e1170 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 12:08:55 +0200 Subject: [PATCH 074/967] Cast biased exp to bit type --- include/boost/decimal/decimal64_t.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index b0033a8c4..a7001697f 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -641,11 +641,11 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept { if (big_combination) { - bits_ |= (biased_exp << detail::d64_11_exp_shift) & detail::d64_11_exp_mask; + bits_ |= (static_cast(biased_exp) << detail::d64_11_exp_shift) & detail::d64_11_exp_mask; } else { - bits_ |= (biased_exp << detail::d64_not_11_exp_shift) & detail::d64_not_11_exp_mask; + bits_ |= (static_cast(biased_exp) << detail::d64_not_11_exp_shift) & detail::d64_not_11_exp_mask; } } else From 57586ada54e309e4bc29440ee43f22a27bfb1cf8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 12:10:48 +0200 Subject: [PATCH 075/967] Add analogous test values --- test/github_issue_1026.cpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index ccde74b20..78e12d313 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -19,18 +19,34 @@ int main() BOOST_TEST_EQ("1234567.50"_DF, "1234568"_DF); BOOST_TEST_EQ("1234567.51"_DF, "1234568"_DF); + BOOST_TEST_EQ("9999999991234567.49"_DD, "9999999991234567"_DD); + BOOST_TEST_EQ("9999999991234567.50"_DD, "9999999991234568"_DD); + BOOST_TEST_EQ("9999999991234567.51"_DD, "9999999991234568"_DD); + BOOST_TEST_EQ("2345678.49"_DF, "2345678"_DF); BOOST_TEST_EQ("2345678.50"_DF, "2345678"_DF); BOOST_TEST_EQ("2345678.51"_DF, "2345679"_DF); + BOOST_TEST_EQ("9999999992345678.49"_DD, "9999999992345678"_DD); + BOOST_TEST_EQ("9999999992345678.50"_DD, "9999999992345678"_DD); + BOOST_TEST_EQ("9999999992345678.51"_DD, "9999999992345679"_DD); + BOOST_TEST_EQ(("0"_DF + "8.4e-96"_DF), "8.4e-96"_DF); BOOST_TEST_EQ(("0"_DF + std::numeric_limits::denorm_min()), std::numeric_limits::denorm_min()); BOOST_TEST_EQ((std::numeric_limits::denorm_min() + std::numeric_limits::denorm_min()), 2*std::numeric_limits::denorm_min()); + BOOST_TEST_EQ(("0"_DD + "8.4e-96"_DD), "8.4e-96"_DD); + BOOST_TEST_EQ(("0"_DD + std::numeric_limits::denorm_min()), std::numeric_limits::denorm_min()); + BOOST_TEST_EQ((std::numeric_limits::denorm_min() + std::numeric_limits::denorm_min()), 2*std::numeric_limits::denorm_min()); + BOOST_TEST_EQ("0"_DF + "8.4e-100"_DF, "8.4e-100"_DF); BOOST_TEST_EQ("1"_DF * "1e-101"_DF, "1e-101"_DF); BOOST_TEST_EQ("1e-101"_DF / "1"_DF, "1e-101"_DF); + BOOST_TEST_EQ("0"_DD + "8.4e-100"_DD, "8.4e-100"_DD); + BOOST_TEST_EQ("1"_DD * "1e-101"_DD, "1e-101"_DD); + BOOST_TEST_EQ("1e-101"_DD / "1"_DD, "1e-101"_DD); + BOOST_TEST_EQ("5.24289e-96"_DF / "1"_DF, "5.24289e-96"_DF); BOOST_TEST_EQ("1"_DF / "5.24289e-96"_DF, "1.907345e+95"_DF); From 2ec3601eb56e3e893a3994a957bc68eb51cea15d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 14:32:35 +0200 Subject: [PATCH 076/967] Fix rounding in addition --- include/boost/decimal/detail/add_impl.hpp | 40 ++++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index f98958af9..37b913b33 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -138,9 +138,47 @@ constexpr auto d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType if (shift > max_shift) { - return lhs.full_significand() != 0U && (lhs_exp > rhs_exp) ? + #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + return big_lhs != 0U && (lhs_exp > rhs_exp) ? ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; + + #else + + auto round {rounding_mode::fe_dec_default}; + + if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(lhs)) + { + round = fegetround(); + } + + if (BOOST_DECIMAL_LIKELY(round != rounding_mode::fe_dec_downward && round != rounding_mode::fe_dec_upward)) + { + return big_lhs != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : + ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; + } + else if (round == rounding_mode::fe_dec_downward) + { + // If we are subtracting even disparate numbers we need to round down + + using sig_type = typename T::significand_type; + + return big_lhs != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs.full_significand() - static_cast(lhs.isneg() != rhs.isneg()), lhs.biased_exponent(), lhs.isneg()} : + ReturnType{rhs.full_significand() - static_cast(lhs.isneg() != rhs.isneg()), rhs.biased_exponent(), rhs.isneg()}; + } + else + { + // rounding mode == fe_dec_upward + + return big_lhs != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs.full_significand() + 1U, lhs.biased_exponent(), lhs.isneg()} : + ReturnType{rhs.full_significand() + 1U, rhs.biased_exponent(), rhs.isneg()}; + } + + #endif // BOOST_DECIMAL_NO_CONSTEVAL_DETECTION } if (lhs_exp < rhs_exp) From 7e3d960a69c431dbf0456c4502025ea475b9ebb7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 15:06:19 +0200 Subject: [PATCH 077/967] Fix sign compare warning on GCC --- include/boost/decimal/decimal64_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index a7001697f..2bc40fe54 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -637,7 +637,7 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept } // If the exponent fits, we do not need to use the combination field - if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= detail::d64_max_biased_exponent)) + if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= static_cast(detail::d64_max_biased_exponent))) { if (big_combination) { From 04d2791b2f3e1df1fa7cb71a58c5e7021d8923f9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 15:14:07 +0200 Subject: [PATCH 078/967] Increase precision of division --- include/boost/decimal/detail/div_impl.hpp | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/detail/div_impl.hpp b/include/boost/decimal/detail/div_impl.hpp index 74ae5ccd7..a7fd2b829 100644 --- a/include/boost/decimal/detail/div_impl.hpp +++ b/include/boost/decimal/detail/div_impl.hpp @@ -55,21 +55,15 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto d64_generic_div_impl(const T& lhs, con // If rhs is greater than we need to offset the significands to get the correct values // e.g. 4/8 is 0 but 40/8 yields 5 in integer maths - constexpr auto tens_needed {detail::pow10(static_cast(detail::precision_v))}; + constexpr auto offset {std::numeric_limits::digits10 - detail::precision_v}; + constexpr auto tens_needed {detail::pow10(static_cast(offset))}; const auto big_sig_lhs {static_cast(lhs.sig) * tens_needed}; const auto res_sig {big_sig_lhs / rhs.sig}; - const auto res_exp {(lhs.exp - detail::precision_v) - rhs.exp}; + const auto res_exp {(lhs.exp - offset) - rhs.exp}; // Let the constructor handle shrinking it back down and rounding correctly - if (res_sig < std::numeric_limits::max()) - { - return DecimalType{static_cast(res_sig), res_exp, sign}; - } - else - { - return DecimalType{res_sig, res_exp, sign}; - } + return DecimalType{res_sig, res_exp, sign}; } template From ecffb990dd72779021205bb95f2fb5947f1f975b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 19:18:42 +0200 Subject: [PATCH 079/967] Fix old GCC conversion error --- include/boost/decimal/decimal64_t.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 2bc40fe54..858b3e06b 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -658,8 +658,8 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept coeff_digits = detail::num_digits(reduced_coeff); } - const auto exp_delta {biased_exp - detail::d64_max_biased_exponent}; - const auto digit_delta {coeff_digits - static_cast(exp_delta)}; + const auto exp_delta {biased_exp - static_cast(detail::d64_max_biased_exponent)}; + const auto digit_delta {coeff_digits - exp_delta}; if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) { exp -= digit_delta; From 01a0c5ecb6e78ce0ee2832afb4e0fb473565aa6c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 15:50:28 +0200 Subject: [PATCH 080/967] Fix constructor rounding in sticky bit case --- include/boost/decimal/decimal128_t.hpp | 34 ++++---------------------- 1 file changed, 5 insertions(+), 29 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 3cfd93ff8..828f7c2af 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -710,35 +710,12 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept // We use sizeof instead of std::numeric_limits since __int128 on GCC prior to 14 without GNU mode does not overload // numeric_limits int coeff_digits {-1}; + auto biased_exp {static_cast(exp + detail::bias_v)}; BOOST_DECIMAL_IF_CONSTEXPR (sizeof(T1) >= sizeof(significand_type)) { - if (coeff > detail::d128_max_significand_value) + if (coeff > detail::d128_max_significand_value || biased_exp < 0) { - constexpr auto precision_plus_one {detail::precision_v + 1}; - coeff_digits = detail::d128_constructor_num_digits(coeff); - if (coeff_digits > precision_plus_one) - { - const auto digits_to_remove {coeff_digits - precision_plus_one}; - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic push - # pragma GCC diagnostic ignored "-Wconversion" - #endif - - coeff /= detail::pow10(static_cast(digits_to_remove)); - - #if defined(__GNUC__) && !defined(__clang__) - # pragma GCC diagnostic pop - #endif - - coeff_digits -= digits_to_remove; - exp += detail::fenv_round(coeff, sign) + digits_to_remove; - } - // Round as required - else - { - exp += detail::fenv_round(coeff, sign); - } + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign); } } @@ -757,10 +734,9 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept bits_ |= (reduced_coeff & detail::d128_not_11_significand_mask); // If the exponent fits we do not need to use the combination field - const auto biased_exp {static_cast(exp + detail::bias_v)}; - if (biased_exp <= detail::d128_max_biased_exponent) + if (biased_exp <= static_cast(detail::d128_max_biased_exponent)) { - bits_.high |= (biased_exp << detail::d128_not_11_exp_high_word_shift) & detail::d128_not_11_exp_mask; + bits_.high |= (static_cast(biased_exp) << detail::d128_not_11_exp_high_word_shift) & detail::d128_not_11_exp_mask; } else { From 64abf51bfa9772118a100a7235eb53e88a736468 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 15:52:42 +0200 Subject: [PATCH 081/967] Fix spurious infinities --- include/boost/decimal/decimal128_t.hpp | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 828f7c2af..4ce6931bf 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -734,7 +734,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept bits_ |= (reduced_coeff & detail::d128_not_11_significand_mask); // If the exponent fits we do not need to use the combination field - if (biased_exp <= static_cast(detail::d128_max_biased_exponent)) + if (BOOST_DECIMAL_LIKELY(biased_exp >= 0 && biased_exp <= static_cast(detail::d128_max_biased_exponent))) { bits_.high |= (static_cast(biased_exp) << detail::d128_not_11_exp_high_word_shift) & detail::d128_not_11_exp_mask; } @@ -756,6 +756,13 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept reduced_coeff *= detail::pow10(static_cast(digit_delta)); *this = decimal128_t(reduced_coeff, exp, sign); } + else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision_v) + { + const auto offset {detail::precision_v - coeff_digits}; + exp -= offset; + reduced_coeff *= detail::pow10(static_cast(offset)); + *this = decimal128_t(reduced_coeff, exp, sign); + } else { bits_ = exp < 0 ? zero : detail::d128_inf_mask; From fdaa15a54a29bf013c57604842d2e0aca7e068be Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 16:02:19 +0200 Subject: [PATCH 082/967] Fix the value of max significand --- include/boost/decimal/detail/attributes.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/attributes.hpp b/include/boost/decimal/detail/attributes.hpp index 6f1aefe83..d8883bda6 100644 --- a/include/boost/decimal/detail/attributes.hpp +++ b/include/boost/decimal/detail/attributes.hpp @@ -89,8 +89,8 @@ constexpr auto max_significand_v() noexcept template >= 128, bool> = true> constexpr auto max_significand_v() noexcept { - return decimal_val_v == 128 ? boost::int128::uint128_t{UINT64_C(0b1111111111'1111111111'1111111111'1111111111'111111), UINT64_MAX} : - boost::int128::uint128_t{UINT64_C(542101086242752), UINT64_C(4003012203950112767)}; + // 34x 9s + return BOOST_DECIMAL_DETAIL_INT128_UINT128_C(9999999999999999999999999999999999); } template From bff0f03649437e32d0bbad9339fda422aad0860c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 8 Sep 2025 16:02:28 +0200 Subject: [PATCH 083/967] Add decimal128_t test set --- test/github_issue_1026.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index 78e12d313..22dea9154 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -23,6 +23,10 @@ int main() BOOST_TEST_EQ("9999999991234567.50"_DD, "9999999991234568"_DD); BOOST_TEST_EQ("9999999991234567.51"_DD, "9999999991234568"_DD); + BOOST_TEST_EQ("9999999999999999999999999991234567.49"_DL, "9999999999999999999999999991234567"_DL); + BOOST_TEST_EQ("9999999999999999999999999991234567.50"_DL, "9999999999999999999999999991234568"_DL); + BOOST_TEST_EQ("9999999999999999999999999991234567.51"_DL, "9999999999999999999999999991234568"_DL); + BOOST_TEST_EQ("2345678.49"_DF, "2345678"_DF); BOOST_TEST_EQ("2345678.50"_DF, "2345678"_DF); BOOST_TEST_EQ("2345678.51"_DF, "2345679"_DF); @@ -31,6 +35,10 @@ int main() BOOST_TEST_EQ("9999999992345678.50"_DD, "9999999992345678"_DD); BOOST_TEST_EQ("9999999992345678.51"_DD, "9999999992345679"_DD); + BOOST_TEST_EQ("9999999999999999999999999992345678.49"_DL, "9999999999999999999999999992345678"_DL); + BOOST_TEST_EQ("9999999999999999999999999992345678.50"_DL, "9999999999999999999999999992345678"_DL); + BOOST_TEST_EQ("9999999999999999999999999992345678.51"_DL, "9999999999999999999999999992345679"_DL); + BOOST_TEST_EQ(("0"_DF + "8.4e-96"_DF), "8.4e-96"_DF); BOOST_TEST_EQ(("0"_DF + std::numeric_limits::denorm_min()), std::numeric_limits::denorm_min()); BOOST_TEST_EQ((std::numeric_limits::denorm_min() + std::numeric_limits::denorm_min()), 2*std::numeric_limits::denorm_min()); From 8d257da7ec40eab958288eca63d79305433ba086 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 11:42:02 +0200 Subject: [PATCH 084/967] Fix GCC7 warning --- include/boost/decimal/decimal128_t.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 4ce6931bf..e7f5ddc12 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -748,8 +748,8 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept coeff_digits = detail::num_digits(reduced_coeff); } - const auto exp_delta {biased_exp - detail::d128_max_biased_exponent}; - const auto digit_delta {coeff_digits - static_cast(exp_delta)}; + const auto exp_delta {biased_exp - static_cast(detail::d128_max_biased_exponent)}; + const auto digit_delta {coeff_digits - exp_delta}; if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) { exp -= digit_delta; From 5ea8d60baa1d02936b79ed62d43f8a8462860c3b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 12:22:54 +0200 Subject: [PATCH 085/967] Increase precision of constants for better rounding --- test/test_constants.cpp | 33 +++++++++++++++++++-------------- 1 file changed, 19 insertions(+), 14 deletions(-) diff --git a/test/test_constants.cpp b/test/test_constants.cpp index f9d9c0538..17b698966 100644 --- a/test/test_constants.cpp +++ b/test/test_constants.cpp @@ -109,20 +109,25 @@ int main() test_defaults(); #ifdef BOOST_DECIMAL_GENERATE_CONSTANT_SIGS - print_value("2.718281828459045235360287471352662"_DL, "e"); - print_value("1.4426950408889634073599246810018921"_DL, "log2"); - print_value("0.43429448190325182765112891891660508"_DL, "log10"); - print_value("3.1415926535897932384626433832795029"_DL, "pi"); - print_value("0.31830988618379067153776752674502872"_DL, "inv_pi"); - print_value("0.56418958354775628694807945156077259"_DL, "inv_sqrt_pi"); - print_value("0.69314718055994530941723212145817657"_DL, "ln2"); - print_value("2.3025850929940456840179914546843642"_DL, "ln10"); - print_value("1.4142135623730950488016887242096981"_DL, "sqrt(2)"); - print_value("1.7320508075688772935274463415058724"_DL, "sqrt(3)"); - print_value("0.70710678118654752440084436210484904"_DL, "1/sqrt(2)"); - print_value("0.57735026918962576450914878050195746"_DL, "1/sqrt(3)"); - print_value("0.57721566490153286060651209008240243"_DL, "egamma"); - print_value("1.6180339887498948482045868343656381"_DL, "phi"); + print_value("2.7182818284590452353602874713526624977572470937000"_DL, "e"); + print_value("1.4426950408889634073599246810018921374266459541530"_DL, "log2e"); + print_value("0.43429448190325182765112891891660508229439700580367"_DL, "log10e"); + print_value("0.30102999566398119521373889472449302676818988146211"_DL, "log10_2"); + print_value("3.1415926535897932384626433832795028841971693993751"_DL, "pi"); + print_value("0.78539816339744830961566084581987572104929234984378"_DL, "pi_over_four"); + print_value("0.31830988618379067153776752674502872406891929148091"_DL, "inv_pi"); + print_value("0.56418958354775628694807945156077258584405062932900"_DL, "inv_sqrt_pi"); + print_value("0.69314718055994530941723212145817656807550013436026"_DL, "ln2"); + print_value("2.3025850929940456840179914546843642076011014886288"_DL, "ln10"); + print_value("1.4142135623730950488016887242096980785696718753769"_DL, "sqrt(2)"); + print_value("1.7320508075688772935274463415058723669428052538104"_DL, "sqrt(3)"); + print_value("3.1622776601683793319988935444327185337195551393252"_DL, "sqrt(10)"); + print_value("1.2599210498948731647672106072782283505702514647015"_DL, "cbrt(2)"); + print_value("2.1544346900318837217592935665193504952593449421921"_DL, "cbrt(10)"); + print_value("0.70710678118654752440084436210484903928483593768847"_DL, "1/sqrt(2)"); + print_value("0.57735026918962576450914878050195745564760175127013"_DL, "1/sqrt(3)"); + print_value("0.57721566490153286060651209008240243104215933593992"_DL, "egamma"); + print_value("1.6180339887498948482045868343656381177203091798058"_DL, "phi"); #endif return boost::report_errors(); From 801ff2487b9e158b5cb2e30622baa6e342f58c91 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 12:31:17 +0200 Subject: [PATCH 086/967] Increase precision of tested values, and adjust bit values --- include/boost/decimal/numbers.hpp | 28 ++++++++++++++-------------- test/test_constants.cpp | 28 ++++++++++++++-------------- 2 files changed, 28 insertions(+), 28 deletions(-) diff --git a/include/boost/decimal/numbers.hpp b/include/boost/decimal/numbers.hpp index 554f6813e..25ac9d1d5 100644 --- a/include/boost/decimal/numbers.hpp +++ b/include/boost/decimal/numbers.hpp @@ -43,7 +43,7 @@ constexpr auto log2e_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto log2e_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(78208654878293), UINT64_C(16395798456599530402)}, -33}; + return DecimalType{boost::int128::uint128_t{UINT64_C(78208654878293), UINT64_C(16395798456599530404)}, -33}; } template < 128, bool> = true> @@ -55,7 +55,7 @@ constexpr auto log10e_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto log10e_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(235431510388986), UINT64_C(2047877485384264674)}, -34}; + return DecimalType{boost::int128::uint128_t{UINT64_C(235431510388986), UINT64_C(2047877485384264675)}, -34}; } template < 128, bool> = true> @@ -79,7 +79,7 @@ constexpr auto pi_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto pi_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(170306079004327), UINT64_C(13456286628489437068)}, -33}; + return DecimalType{boost::int128::uint128_t{UINT64_C(170306079004327), UINT64_C(13456286628489437071)}, -33}; } template < 128, bool> = true> @@ -91,7 +91,7 @@ constexpr auto pi_over_four_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto pi_over_four_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(42576519751081932), UINT64_C(6764235707220873609)}, -38}; + return DecimalType{boost::int128::uint128_t{UINT64_C(42576519751081932), UINT64_C(5970600460659265253)}, -38}; } template < 128, bool> = true> @@ -103,7 +103,7 @@ constexpr auto inv_pi_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto inv_pi_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(172556135062039), UINT64_C(13820348844234745256)}, -34}; + return DecimalType{boost::int128::uint128_t{UINT64_C(172556135062039), UINT64_C(13820348844234745263)}, -34}; } template < 128, bool> = true> @@ -115,7 +115,7 @@ constexpr auto inv_sqrtpi_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto inv_sqrtpi_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(305847786088084), UINT64_C(12695685840195063976)}, -34}; + return DecimalType{boost::int128::uint128_t{UINT64_C(305847786088084), UINT64_C(12695685840195063982)}, -34}; } template < 128, bool> = true> @@ -127,7 +127,7 @@ constexpr auto ln2_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto ln2_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(375755839507647), UINT64_C(8395602002641374208)}, -34}; + return DecimalType{boost::int128::uint128_t{UINT64_C(375755839507647), UINT64_C(8395602002641374214)}, -34}; } template < 128, bool> = true> @@ -139,7 +139,7 @@ constexpr auto ln10_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto ln10_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(124823388007844), UINT64_C(1462833818723808456)}, -33}; + return DecimalType{boost::int128::uint128_t{UINT64_C(124823388007844), UINT64_C(1462833818723808460)}, -33}; } template < 128, bool> = true> @@ -151,7 +151,7 @@ constexpr auto sqrt2_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto sqrt2_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(76664670834168), UINT64_C(12987834932751794202)}, -33}; + return DecimalType{boost::int128::uint128_t{UINT64_C(76664670834168), UINT64_C(12987834932751794210)}, -33}; } template < 128, bool> = true> @@ -163,7 +163,7 @@ constexpr auto sqrt3_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto sqrt3_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(93894662421072), UINT64_C(8437766544231453518)}, -33}; + return DecimalType{boost::int128::uint128_t{UINT64_C(93894662421072), UINT64_C(8437766544231453520)}, -33}; } template < 128, bool> = true> @@ -175,7 +175,7 @@ constexpr auto sqrt10_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto sqrt10_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(171427415457846), UINT64_C(13450487317535253574)}, -33}; + return DecimalType{boost::int128::uint128_t{UINT64_C(171427415457846), UINT64_C(13450487317535253583)}, -33}; } template < 128, bool> = true> @@ -223,7 +223,7 @@ constexpr auto inv_sqrt3_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto inv_sqrt3_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(312982208070241), UINT64_C(9679144407061960114)}, -34}; + return DecimalType{boost::int128::uint128_t{UINT64_C(312982208070241), UINT64_C(9679144407061960119)}, -34}; } template < 128, bool> = true> @@ -235,7 +235,7 @@ constexpr auto egamma_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto egamma_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(312909238939453), UINT64_C(7916302232898517972)}, -34}; + return DecimalType{boost::int128::uint128_t{UINT64_C(312909238939453), UINT64_C(7916302232898517976)}, -34}; } template < 128, bool> = true> @@ -247,7 +247,7 @@ constexpr auto phi_v() noexcept -> DecimalType template >= 128, bool> = true> constexpr auto phi_v() noexcept -> DecimalType { - return DecimalType{boost::int128::uint128_t{UINT64_C(87713798287901), UINT64_C(2061523135646567614)}, -33}; + return DecimalType{boost::int128::uint128_t{UINT64_C(87713798287901), UINT64_C(2061523135646567622)}, -33}; } } // Namespace detail diff --git a/test/test_constants.cpp b/test/test_constants.cpp index 17b698966..6c4a0b344 100644 --- a/test/test_constants.cpp +++ b/test/test_constants.cpp @@ -51,20 +51,20 @@ void print_value(T value, const char* str) template <> void test_constants() { - BOOST_TEST_EQ("2.718281828459045235360287471352662"_DL, e_v); - BOOST_TEST_EQ("1.4426950408889634073599246810018921"_DL, log2e_v); - BOOST_TEST_EQ("0.43429448190325182765112891891660508"_DL, log10e_v); - BOOST_TEST_EQ("3.1415926535897932384626433832795029"_DL, pi_v); - BOOST_TEST_EQ("0.31830988618379067153776752674502872"_DL, inv_pi_v); - BOOST_TEST_EQ("0.56418958354775628694807945156077259"_DL, inv_sqrtpi_v); - BOOST_TEST_EQ("0.69314718055994530941723212145817657"_DL, ln2_v); - BOOST_TEST_EQ("2.3025850929940456840179914546843642"_DL, ln10_v); - BOOST_TEST_EQ("1.4142135623730950488016887242096981"_DL, sqrt2_v); - BOOST_TEST_EQ("1.7320508075688772935274463415058724"_DL, sqrt3_v); - BOOST_TEST_EQ("0.70710678118654752440084436210484904"_DL, inv_sqrt2_v); - BOOST_TEST_EQ("0.57735026918962576450914878050195746"_DL, inv_sqrt3_v); - BOOST_TEST_EQ("0.57721566490153286060651209008240243"_DL, egamma_v); - BOOST_TEST_EQ("1.6180339887498948482045868343656381"_DL, phi_v); + BOOST_TEST_EQ("2.7182818284590452353602874713526624977572470937000"_DL, e_v); + BOOST_TEST_EQ("1.4426950408889634073599246810018921374266459541530"_DL, log2e_v); + BOOST_TEST_EQ("0.43429448190325182765112891891660508229439700580367"_DL, log10e_v); + BOOST_TEST_EQ("3.1415926535897932384626433832795028841971693993751"_DL, pi_v); + BOOST_TEST_EQ("0.31830988618379067153776752674502872406891929148091"_DL, inv_pi_v); + BOOST_TEST_EQ("0.56418958354775628694807945156077258584405062932900"_DL, inv_sqrtpi_v); + BOOST_TEST_EQ("0.69314718055994530941723212145817656807550013436026"_DL, ln2_v); + BOOST_TEST_EQ("2.3025850929940456840179914546843642076011014886288"_DL, ln10_v); + BOOST_TEST_EQ("1.4142135623730950488016887242096980785696718753769"_DL, sqrt2_v); + BOOST_TEST_EQ("1.7320508075688772935274463415058723669428052538104"_DL, sqrt3_v); + BOOST_TEST_EQ("0.70710678118654752440084436210484903928483593768847"_DL, inv_sqrt2_v); + BOOST_TEST_EQ("0.57735026918962576450914878050195745564760175127013"_DL, inv_sqrt3_v); + BOOST_TEST_EQ("0.57721566490153286060651209008240243104215933593992"_DL, egamma_v); + BOOST_TEST_EQ("1.6180339887498948482045868343656381177203091798058"_DL, phi_v); BOOST_TEST_EQ(static_cast(e_v), e_v); BOOST_TEST_EQ(static_cast(log2e_v), log2e_v); From 67d965b6541a4bf71d88867d6dcb22ed3dfb95d6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 13:04:16 +0200 Subject: [PATCH 087/967] Add note about not being correctly rounded --- doc/modules/ROOT/pages/cmath.adoc | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index fb7f66a94..872b20c9a 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -13,6 +13,11 @@ They are also all constexpr with C\\++14 unlike the built-in floating point type Additionally, all functions are marked `noexcept`. All of these functions are impacted by the global rounding mode as described in xref:cfenv.adoc[rounding modes] as well as the `DEC_FLT_EVAL_METHOD` from xref:cfloat.adoc[evaluation methods]. +IEEE 754 specifies for correct rounding: "This standard’s method of converting an infinitely precise result to a floating-point number, as determined by the applicable rounding direction. A floating-point number so obtained is said to be correctly rounded." +None of these functions meet the definition of correctly rounded (which would imply precision of https://en.wikipedia.org/wiki/Unit_in_the_last_place[0.5 ULP]). +From the https://www.netlib.org/misc/intel/README.txt[Intel libdfp README]: "binary floating-point mathematical functions +implemented for example in C or other compiler math libraries are in general +not correctly rounded either". == Basic Operations From 0c6f184cab5809ec827da7208cffb0ed8e3dd929 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 11:38:49 +0200 Subject: [PATCH 088/967] Fix division for decimal_fast64_t --- include/boost/decimal/decimal_fast64_t.hpp | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index b48def458..0915a821f 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -401,7 +401,7 @@ constexpr decimal_fast64_t::decimal_fast64_t(T1 coeff, T2 exp, bool sign) noexce sign_ = sign; // Normalize the value, so we don't have to worry about it with operations - detail::normalize(min_coeff, exp, sign); + detail::normalize(min_coeff, exp, sign); significand_ = static_cast(min_coeff); @@ -1109,15 +1109,14 @@ constexpr auto d64_fast_div_impl(const decimal_fast64_t& lhs, const decimal_fast // If rhs is greater than we need to offset the significands to get the correct values // e.g. 4/8 is 0 but 40/8 yields 5 in integer maths - constexpr auto tens_needed {detail::pow10(static_cast(detail::precision_v))}; + constexpr auto offset {std::numeric_limits::digits10 - detail::precision_v}; + constexpr auto tens_needed {detail::pow10(static_cast(offset))}; const auto big_sig_lhs {static_cast(lhs.significand_) * tens_needed}; - const auto res_sig {big_sig_lhs / static_cast(rhs.significand_)}; - const auto res_exp {(lhs.biased_exponent() - detail::precision_v) - rhs.biased_exponent()}; + const auto res_sig {big_sig_lhs / rhs.significand_}; + const auto res_exp {(lhs.biased_exponent() - offset) - rhs.biased_exponent()}; - BOOST_DECIMAL_ASSERT(res_sig <= std::numeric_limits::max()); - - q = decimal_fast64_t{static_cast(res_sig), res_exp, sign}; + q = decimal_fast64_t{res_sig, res_exp, sign}; } constexpr auto d64_fast_mod_impl(const decimal_fast64_t lhs, const decimal_fast64_t rhs, const decimal_fast64_t& q, decimal_fast64_t& r) noexcept -> void From 7bf618680d66895cee11f8ae28b3d8d7314da6fc Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 11:39:01 +0200 Subject: [PATCH 089/967] Apply rounding correction to integer test --- test/random_decimal32_fast_math.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/test/random_decimal32_fast_math.cpp b/test/random_decimal32_fast_math.cpp index 9ba45139e..0b6a956ef 100644 --- a/test/random_decimal32_fast_math.cpp +++ b/test/random_decimal32_fast_math.cpp @@ -475,6 +475,13 @@ void random_spot_division(T val1, T val2) int main() { + // Match the rounding mode of integers + #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + return 0; + #else + + fesetround(rounding_mode::fe_dec_to_nearest_from_zero); + // Values that won't exceed the range of the significand // Only positive values random_addition(0, 5'000'000); @@ -598,6 +605,7 @@ int main() random_mixed_division(-sqrt_int_max, sqrt_int_max); return boost::report_errors(); + #endif } #ifdef _MSC_VER From 698045f02d96973596255ffd4da4c89cd0b10d2c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 11:39:20 +0200 Subject: [PATCH 090/967] Use new coefficient rounding for normalization --- include/boost/decimal/detail/normalize.hpp | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/normalize.hpp b/include/boost/decimal/detail/normalize.hpp index 0f73c091b..ce3dac979 100644 --- a/include/boost/decimal/detail/normalize.hpp +++ b/include/boost/decimal/detail/normalize.hpp @@ -30,10 +30,8 @@ constexpr auto normalize(T1& significand, T2& exp, bool sign = false) noexcept - } else if (digits > target_precision) { - const auto excess_digits {digits - (target_precision + 1)}; - significand /= pow10(static_cast(excess_digits)); - // Perform final rounding according to the fenv rounding mode - exp += detail::fenv_round(significand, sign || significand < 0U) + excess_digits; + auto biased_exp {static_cast(exp) + detail::bias_v}; + detail::coefficient_rounding(significand, exp, biased_exp, sign); } } From 28373a3029666b51364c099a905c1fa4de30b09b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 11:40:06 +0200 Subject: [PATCH 091/967] When rounding fast types ensure the result has precision_v digits left --- .../boost/decimal/detail/fenv_rounding.hpp | 23 +++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index be12a9282..3a7ae9d0e 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -124,15 +124,30 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex #endif +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4127) +#endif + template BOOST_DECIMAL_FORCE_INLINE constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bool sign) noexcept { auto coeff_digits {detail::num_digits(coeff)}; // How many digits need to be shifted? - const auto shift_for_small_exp {(-biased_exp) - 1}; const auto shift_for_large_coeff {(coeff_digits - detail::precision_v) - 1}; - const auto shift {std::max(shift_for_small_exp, shift_for_large_coeff)}; + int shift {}; + BOOST_DECIMAL_IF_CONSTEXPR (is_fast_type_v) + { + // For fast types we never want to reduce past precision digits + // otherwise we could potentially end up incorrectly normalized + shift = shift_for_large_coeff; + } + else + { + const auto shift_for_small_exp {(-biased_exp) - 1}; + shift = std::max(shift_for_small_exp, shift_for_large_coeff); + } if (BOOST_DECIMAL_UNLIKELY(shift > std::numeric_limits::digits10)) { @@ -161,6 +176,10 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto coefficient_rounding(T1& coeff, T2& ex return coeff_digits; } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + } // namespace detail } // namespace decimal } // namespace boost From da348d8397061491a6857637eecf1c6cf8abd4cb Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 14:20:16 +0200 Subject: [PATCH 092/967] Test sqrt to 8 ULPs instead of 16-96 --- test/test_sqrt.cpp | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/test/test_sqrt.cpp b/test/test_sqrt.cpp index f82885a0d..6d4d2dd8a 100644 --- a/test/test_sqrt.cpp +++ b/test/test_sqrt.cpp @@ -352,9 +352,9 @@ auto main() -> int using decimal_type = boost::decimal::decimal32_t; using float_type = float; - const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E-26L, 1.0E-01L); - const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 0.9E-01L, 1.1E+01L); - const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E+01L, 1.0E+26L); + const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E-26L, 1.0E-01L); + const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 0.9E-01L, 1.1E+01L); + const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E+01L, 1.0E+26L); BOOST_TEST(result_small_is_ok); BOOST_TEST(result_medium_is_ok); @@ -375,9 +375,9 @@ auto main() -> int using decimal_type = boost::decimal::decimal64_t; using float_type = double; - const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E-76L, 1.0E-01L); - const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 0.9E-01L, 1.1E+01L); - const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E+01L, 1.0E+76L); + const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E-76L, 1.0E-01L); + const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 0.9E-01L, 1.1E+01L); + const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E+01L, 1.0E+76L); BOOST_TEST(result_small_is_ok); BOOST_TEST(result_medium_is_ok); @@ -395,7 +395,7 @@ auto main() -> int } { - const auto result_sqrt128_is_ok = local::test_sqrt_128(96); + const auto result_sqrt128_is_ok = local::test_sqrt_128(8); BOOST_TEST(result_sqrt128_is_ok); From 1ad30a20992e399927fc5d406c2bb7b5546bd79d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 14:20:33 +0200 Subject: [PATCH 093/967] Increase loop iterations by 1 for tighter tol --- include/boost/decimal/detail/cmath/sqrt.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/cmath/sqrt.hpp b/include/boost/decimal/detail/cmath/sqrt.hpp index 418cecbf5..e68dcb36d 100644 --- a/include/boost/decimal/detail/cmath/sqrt.hpp +++ b/include/boost/decimal/detail/cmath/sqrt.hpp @@ -129,8 +129,8 @@ constexpr auto sqrt_impl(const T x) noexcept constexpr int iter_loops { - std::numeric_limits::digits10 < 10 ? 2 - : std::numeric_limits::digits10 < 20 ? 3 : 4 + std::numeric_limits::digits10 < 10 ? 3 + : std::numeric_limits::digits10 < 20 ? 4 : 5 }; for (int idx = 0; idx < iter_loops; ++idx) From a507fcb614a458266b5599254d0e8c7fc4d51da5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 16:03:54 +0200 Subject: [PATCH 094/967] Revert 32 and 64 tol, keep 128 --- test/test_sqrt.cpp | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/test/test_sqrt.cpp b/test/test_sqrt.cpp index 6d4d2dd8a..597841c67 100644 --- a/test/test_sqrt.cpp +++ b/test/test_sqrt.cpp @@ -352,9 +352,9 @@ auto main() -> int using decimal_type = boost::decimal::decimal32_t; using float_type = float; - const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E-26L, 1.0E-01L); - const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 0.9E-01L, 1.1E+01L); - const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E+01L, 1.0E+26L); + const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E-26L, 1.0E-01L); + const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 0.9E-01L, 1.1E+01L); + const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E+01L, 1.0E+26L); BOOST_TEST(result_small_is_ok); BOOST_TEST(result_medium_is_ok); @@ -375,9 +375,9 @@ auto main() -> int using decimal_type = boost::decimal::decimal64_t; using float_type = double; - const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E-76L, 1.0E-01L); - const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 0.9E-01L, 1.1E+01L); - const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(8)), 1.0E+01L, 1.0E+76L); + const auto result_small_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E-76L, 1.0E-01L); + const auto result_medium_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 0.9E-01L, 1.1E+01L); + const auto result_large_is_ok = local::test_sqrt(static_cast(INT32_C(16)), 1.0E+01L, 1.0E+76L); BOOST_TEST(result_small_is_ok); BOOST_TEST(result_medium_is_ok); From 4f32381b9f77f3bbfa0159bb7ea9378376c43b35 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 14:53:19 +0200 Subject: [PATCH 095/967] Improve macro variable name --- include/boost/decimal/decimal128_t.hpp | 28 +++---- include/boost/decimal/decimal32_t.hpp | 30 ++++---- include/boost/decimal/decimal64_t.hpp | 28 +++---- include/boost/decimal/decimal_fast128_t.hpp | 12 +-- include/boost/decimal/decimal_fast32_t.hpp | 6 +- include/boost/decimal/decimal_fast64_t.hpp | 6 +- include/boost/decimal/detail/attributes.hpp | 44 +++++------ include/boost/decimal/detail/config.hpp | 6 +- .../detail/fast_float/compute_float64.hpp | 2 +- .../detail/fast_float/compute_float80_128.hpp | 2 +- .../detail/fast_float/significand_tables.hpp | 4 +- .../detail/from_chars_integer_impl.hpp | 2 +- .../decimal/detail/int128/detail/clz.hpp | 4 +- .../detail/int128/detail/constants.hpp | 4 +- .../detail/int128/detail/conversions.hpp | 2 +- .../decimal/detail/int128/detail/ctz.hpp | 2 +- .../detail/int128/detail/mini_from_chars.hpp | 2 +- .../detail/int128/detail/mini_to_chars.hpp | 4 +- .../decimal/detail/int128/detail/traits.hpp | 6 +- .../boost/decimal/detail/int128/iostream.hpp | 2 +- .../boost/decimal/detail/int128/numeric.hpp | 2 +- include/boost/decimal/detail/power_tables.hpp | 10 +-- .../boost/decimal/detail/ryu/generic_128.hpp | 10 +-- .../decimal/detail/ryu/ryu_generic_128.hpp | 4 +- .../decimal/detail/to_chars_integer_impl.hpp | 4 +- include/boost/decimal/detail/type_traits.hpp | 2 +- include/boost/decimal/numbers.hpp | 74 +++++++++---------- 27 files changed, 151 insertions(+), 151 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index e7f5ddc12..6e20104dc 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -66,29 +66,29 @@ namespace decimal { namespace detail { // See IEEE 754 section 3.5.2 -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_inf_mask {UINT64_C(0x7800000000000000), UINT64_C(0)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_nan_mask {UINT64_C(0x7C00000000000000), UINT64_C(0)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_snan_mask {UINT64_C(0x7E00000000000000), UINT64_C(0)}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int128::uint128_t d128_inf_mask {UINT64_C(0x7800000000000000), UINT64_C(0)}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int128::uint128_t d128_nan_mask {UINT64_C(0x7C00000000000000), UINT64_C(0)}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int128::uint128_t d128_snan_mask {UINT64_C(0x7E00000000000000), UINT64_C(0)}; // Comb. Exponent Significand // s eeeeeeeeeeeeee (0TTT) 110-bits // s 11 eeeeeeeeeeeeee (100T) 110-bits -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_sign_mask {UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d128_sign_mask {UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000)}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d128_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_mask = UINT64_C(0b0'11111111111111'000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_high_word_shift {49U}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_mask {UINT64_C(0b0'00'11111111111111'0000000'0000000000'0000000000'0000000000'0000000000)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_high_word_shift {47U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_mask = UINT64_C(0b0'11111111111111'000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d128_not_11_exp_high_word_shift {49U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_mask {UINT64_C(0b0'00'11111111111111'0000000'0000000000'0000000000'0000000000'0000000000)}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d128_11_exp_high_word_shift {47U}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_not_11_significand_mask {UINT64_C(0b0'00000000000000'111111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_11_significand_mask {UINT64_C(0b0'00'00000000000000'1111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int128::uint128_t d128_not_11_significand_mask {UINT64_C(0b0'00000000000000'111111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int128::uint128_t d128_11_significand_mask {UINT64_C(0b0'00'00000000000000'1111111'1111111111'1111111111'1111111111'1111111111), UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_biggest_no_combination_significand {d128_not_11_significand_mask}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int128::uint128_t d128_biggest_no_combination_significand {d128_not_11_significand_mask}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d128_max_biased_exponent {UINT64_C(12287)}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE int128::uint128_t d128_max_significand_value {UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d128_max_biased_exponent {UINT64_C(12287)}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int128::uint128_t d128_max_significand_value {UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}; template constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index c42e1d82b..ea8ad4e84 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -65,9 +65,9 @@ namespace decimal { namespace detail { // See IEEE 754 section 3.5.2 -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_inf_mask = UINT32_C(0x78000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_nan_mask = UINT32_C(0x7C000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_snan_mask = UINT32_C(0x7E000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_inf_mask = UINT32_C(0x78000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_nan_mask = UINT32_C(0x7C000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_snan_mask = UINT32_C(0x7E000000); // Comb. Exponent Significand // s eeeeeeee ttttttttttttttttttttttt - sign + 2 steering bits concatenate to 6 bits of exponent (8 total) + 23 bits of significand like float @@ -75,23 +75,23 @@ BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_snan_mask = UINT32_C(0x7E0000 // // Only is the type different in steering 11 which yields significand 100 + 21 bits giving us our 24 total bits of precision -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_sign_mask = UINT32_C(0b10000000000000000000000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_combination_field_mask = UINT32_C(0b01100000000000000000000000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_sign_mask = UINT32_C(0b10000000000000000000000000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_combination_field_mask = UINT32_C(0b01100000000000000000000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_comb_11_mask = UINT32_C(0b0'11000'000000'0000000000'0000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_comb_11_mask = UINT32_C(0b0'11000'000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_mask = UINT32_C(0b01111111100000000000000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_shift = UINT32_C(23); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_mask = UINT32_C(0b00011111111000000000000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_shift = UINT32_C(21); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_mask = UINT32_C(0b01111111100000000000000000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_exp_shift = UINT32_C(23); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_mask = UINT32_C(0b00011111111000000000000000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_11_exp_shift = UINT32_C(21); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_significand_mask = UINT32_C(0b00000000011111111111111111111111); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_11_significand_mask = UINT32_C(0b00000000000111111111111111111111); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_not_11_significand_mask = UINT32_C(0b00000000011111111111111111111111); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_11_significand_mask = UINT32_C(0b00000000000111111111111111111111); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_biggest_no_combination_significand = UINT32_C(0b11111111111111111111111); // 23 bits +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_biggest_no_combination_significand = UINT32_C(0b11111111111111111111111); // 23 bits -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_max_biased_exponent = UINT32_C(191); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t d32_max_significand_value = UINT32_C(9'999'999); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_max_biased_exponent = UINT32_C(191); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t d32_max_significand_value = UINT32_C(9'999'999); template constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 858b3e06b..3229d7af1 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -67,29 +67,29 @@ namespace decimal { namespace detail { // See IEEE 754 section 3.5.2 -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_inf_mask = UINT64_C(0x7800000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_nan_mask = UINT64_C(0x7C00000000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_snan_mask = UINT64_C(0x7E00000000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_inf_mask = UINT64_C(0x7800000000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_nan_mask = UINT64_C(0x7C00000000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_snan_mask = UINT64_C(0x7E00000000000000); // Comb. Exponent Significand // s eeeeeeeeee [ttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt] // s 11 eeeeeeeeee [100t][tttttttttt][tttttttttt][tttttttttt][tttttttttt][tttttttttt] -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_sign_mask = UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_sign_mask = UINT64_C(0b1'00000'00000000'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_combination_field_mask = UINT64_C(0b0'11'00000000'000'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_mask = UINT64_C(0b0'11'11111111'000'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_shift = UINT64_C(53); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_mask = UINT64_C(0b0'00'1111111111'0'0000000000'0000000000'0000000000'0000000000'0000000000); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_shift = UINT64_C(51); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_mask = UINT64_C(0b0'11'11111111'000'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_exp_shift = UINT64_C(53); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_mask = UINT64_C(0b0'00'1111111111'0'0000000000'0000000000'0000000000'0000000000'0000000000); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_11_exp_shift = UINT64_C(51); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_significand_mask = UINT64_C(0b0'00'00000000'111'1111111111'1111111111'1111111111'1111111111'1111111111); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_11_significand_mask = UINT64_C(0b0'00'0000000000'1'1111111111'1111111111'1111111111'1111111111'1111111111); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_not_11_significand_mask = UINT64_C(0b0'00'00000000'111'1111111111'1111111111'1111111111'1111111111'1111111111); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_11_significand_mask = UINT64_C(0b0'00'0000000000'1'1111111111'1111111111'1111111111'1111111111'1111111111); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_biggest_no_combination_significand = d64_not_11_significand_mask; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_biggest_no_combination_significand = d64_not_11_significand_mask; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_max_biased_exponent = UINT64_C(767); -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t d64_max_significand_value = UINT64_C(9'999'999'999'999'999); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_max_biased_exponent = UINT64_C(767); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t d64_max_significand_value = UINT64_C(9'999'999'999'999'999); template diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 721026a03..93899a662 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -30,13 +30,13 @@ namespace decimal { namespace detail { -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_inf = boost::int128::uint128_t {UINT64_MAX - 2, UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_qnan = boost::int128::uint128_t {UINT64_MAX - 1, UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_snan = boost::int128::uint128_t {UINT64_MAX, UINT64_MAX}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_inf = boost::int128::uint128_t {UINT64_MAX - 2, UINT64_MAX}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_qnan = boost::int128::uint128_t {UINT64_MAX - 1, UINT64_MAX}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan = boost::int128::uint128_t {UINT64_MAX, UINT64_MAX}; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_inf_high_bits = UINT64_MAX - 2; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_qnan_high_bits = UINT64_MAX - 1; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits = UINT64_MAX; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_inf_high_bits = UINT64_MAX - 2; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_qnan_high_bits = UINT64_MAX - 1; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits = UINT64_MAX; } // namespace detail diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index c97ca79cc..699310dd1 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -29,9 +29,9 @@ namespace decimal { namespace detail { -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_inf = std::numeric_limits::max() - 3; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_qnan = std::numeric_limits::max() - 2; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d32_fast_snan = std::numeric_limits::max() - 1; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_inf = std::numeric_limits::max() - 3; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_qnan = std::numeric_limits::max() - 2; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_snan = std::numeric_limits::max() - 1; } diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 0915a821f..0c8ec4a5b 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -33,9 +33,9 @@ namespace decimal { namespace detail { -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_inf = std::numeric_limits::max() - 3; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_qnan = std::numeric_limits::max() - 2; -BOOST_DECIMAL_CONSTEXPR_VARIABLE auto d64_fast_snan = std::numeric_limits::max() - 1; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_inf = std::numeric_limits::max() - 3; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_qnan = std::numeric_limits::max() - 2; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_snan = std::numeric_limits::max() - 1; } // namespace detail diff --git a/include/boost/decimal/detail/attributes.hpp b/include/boost/decimal/detail/attributes.hpp index d8883bda6..4f979905a 100644 --- a/include/boost/decimal/detail/attributes.hpp +++ b/include/boost/decimal/detail/attributes.hpp @@ -110,49 +110,49 @@ constexpr auto is_fast_type_v() noexcept -> bool } // namespace impl template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto storage_width_v = impl::storage_width_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto storage_width_v = impl::storage_width_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto precision_v = impl::precision_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto precision_v = impl::precision_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto bias_v = impl::bias_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto bias_v = impl::bias_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto max_biased_exp_v = impl::max_biased_exp_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto max_biased_exp_v = impl::max_biased_exp_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto emax_v = impl::emax_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto emax_v = impl::emax_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto emin_v = impl::emin_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto emin_v = impl::emin_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto etiny_v = -impl::bias_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto etiny_v = -impl::bias_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto combination_field_width_v = impl::combination_field_width_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto combination_field_width_v = impl::combination_field_width_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto trailing_significand_field_width_v = impl::trailing_significand_field_width_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto trailing_significand_field_width_v = impl::trailing_significand_field_width_v(); template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto max_significand_v = impl::max_significand_v(); +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto max_significand_v = impl::max_significand_v(); // sign + decimal digits + '.' + 'e' + '+/-' + max digits of exponent + null term template , bool> = true> -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto max_string_length_v = impl::max_string_length_v(); - -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto storage_width {storage_width_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto precision {precision_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto bias {bias_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto max_biased_exp {max_biased_exp_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto emax {emax_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto emin {emin_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto etiny {etiny_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto combination_field_width {combination_field_width_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto max_significand {max_significand_v}; -BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_CONSTEXPR_VARIABLE auto max_string_length {max_string_length_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto max_string_length_v = impl::max_string_length_v(); + +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto storage_width {storage_width_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto precision {precision_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto bias {bias_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto max_biased_exp {max_biased_exp_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto emax {emax_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto emin {emin_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto etiny {etiny_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto combination_field_width {combination_field_width_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto max_significand {max_significand_v}; +BOOST_DECIMAL_ATTRIBUTE_UNUSED BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto max_string_length {max_string_length_v}; } //namespace detail } //namespace decimal diff --git a/include/boost/decimal/detail/config.hpp b/include/boost/decimal/detail/config.hpp index 850960098..312922667 100644 --- a/include/boost/decimal/detail/config.hpp +++ b/include/boost/decimal/detail/config.hpp @@ -291,11 +291,11 @@ typedef unsigned __int128 builtin_uint128_t; #endif #if defined(__cpp_inline_variables) && __cpp_inline_variables >= 201606L -# define BOOST_DECIMAL_CONSTEXPR_VARIABLE inline constexpr -# define BOOST_DECIMAL_CONSTEXPR_VARIABLE_SPECIALIZATION BOOST_DECIMAL_CONSTEXPR_VARIABLE +# define BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE inline constexpr +# define BOOST_DECIMAL_CONSTEXPR_VARIABLE_SPECIALIZATION BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE # define BOOST_DECIMAL_INLINE_VARIABLE inline #else -# define BOOST_DECIMAL_CONSTEXPR_VARIABLE static constexpr +# define BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE static constexpr # define BOOST_DECIMAL_CONSTEXPR_VARIABLE_SPECIALIZATION BOOST_DECIMAL_CLANG_STATIC constexpr # define BOOST_DECIMAL_INLINE_VARIABLE static #endif diff --git a/include/boost/decimal/detail/fast_float/compute_float64.hpp b/include/boost/decimal/detail/fast_float/compute_float64.hpp index 8cd7f8cb8..dc454a36d 100644 --- a/include/boost/decimal/detail/fast_float/compute_float64.hpp +++ b/include/boost/decimal/detail/fast_float/compute_float64.hpp @@ -24,7 +24,7 @@ namespace decimal { namespace detail { namespace fast_float { -BOOST_DECIMAL_CONSTEXPR_VARIABLE double double_powers_of_ten[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE double double_powers_of_ten[] = { 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, 1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22 }; diff --git a/include/boost/decimal/detail/fast_float/compute_float80_128.hpp b/include/boost/decimal/detail/fast_float/compute_float80_128.hpp index a00957918..258fa5041 100644 --- a/include/boost/decimal/detail/fast_float/compute_float80_128.hpp +++ b/include/boost/decimal/detail/fast_float/compute_float80_128.hpp @@ -23,7 +23,7 @@ namespace decimal { namespace detail { namespace fast_float { -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::array powers_of_ten_ld = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::array powers_of_ten_ld = { 1e0L, 1e1L, 1e2L, 1e3L, 1e4L, 1e5L, 1e6L, 1e7L, 1e8L, 1e9L, 1e10L, 1e11L, 1e12L, 1e13L, 1e14L, 1e15L, 1e16L, 1e17L, 1e18L, 1e19L, 1e20L, diff --git a/include/boost/decimal/detail/fast_float/significand_tables.hpp b/include/boost/decimal/detail/fast_float/significand_tables.hpp index cad6cb993..afafa06ff 100644 --- a/include/boost/decimal/detail/fast_float/significand_tables.hpp +++ b/include/boost/decimal/detail/fast_float/significand_tables.hpp @@ -26,7 +26,7 @@ namespace fast_float { // 10^BOOST_DECIMAL_FASTFLOAT_LARGEST_POWER (inclusively). // The significand is truncated, and never rounded up. // Uses about 5KB. -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t significand_64[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t significand_64[] = { UINT64_C(0xa5ced43b7e3e9188), UINT64_C(0xcf42894a5dce35ea), UINT64_C(0x818995ce7aa0e1b2), UINT64_C(0xa1ebfb4219491a1f), UINT64_C(0xca66fa129f9b60a6), UINT64_C(0xfd00b897478238d0), @@ -349,7 +349,7 @@ BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t significand_64[] = { // A complement to significand_64 // complete to a 128-bit significand. // Uses about 5KB but is rarely accessed. -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t significand_128[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t significand_128[] = { UINT64_C(0x419ea3bd35385e2d), UINT64_C(0x52064cac828675b9), UINT64_C(0x7343efebd1940993), UINT64_C(0x1014ebe6c5f90bf8), UINT64_C(0xd41a26e077774ef6), UINT64_C(0x8920b098955522b4), diff --git a/include/boost/decimal/detail/from_chars_integer_impl.hpp b/include/boost/decimal/detail/from_chars_integer_impl.hpp index 6a5642e29..4164db103 100644 --- a/include/boost/decimal/detail/from_chars_integer_impl.hpp +++ b/include/boost/decimal/detail/from_chars_integer_impl.hpp @@ -26,7 +26,7 @@ namespace boost { namespace decimal { namespace detail { -BOOST_DECIMAL_CONSTEXPR_VARIABLE unsigned char uchar_values[] = +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE unsigned char uchar_values[] = {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, diff --git a/include/boost/decimal/detail/int128/detail/clz.hpp b/include/boost/decimal/detail/int128/detail/clz.hpp index be9c9bbf6..61d609702 100644 --- a/include/boost/decimal/detail/int128/detail/clz.hpp +++ b/include/boost/decimal/detail/int128/detail/clz.hpp @@ -16,7 +16,7 @@ namespace detail { namespace impl { // See: http://graphics.stanford.edu/~seander/bithacks.html#IntegerLogDeBruijn -BOOST_DECIMAL_CONSTEXPR_VARIABLE int index64[64] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int index64[64] = { 0, 47, 1, 56, 48, 27, 2, 60, 57, 49, 41, 37, 28, 16, 3, 61, 54, 58, 35, 52, 50, 42, 21, 44, @@ -43,7 +43,7 @@ constexpr int bit_scan_reverse(std::uint64_t bb) noexcept return index64[(bb * debruijn64) >> 58]; } -BOOST_DECIMAL_CONSTEXPR_VARIABLE int countl_mod37[37] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int countl_mod37[37] = { 32, 31, 6, 30, 9, 5, 0, 29, 16, 8, 2, 4, 21, 0, 19, 28, 25, 15, 0, 7, 10, 1, 17, 3, diff --git a/include/boost/decimal/detail/int128/detail/constants.hpp b/include/boost/decimal/detail/int128/detail/constants.hpp index a59b6b9d1..9e2024d4a 100644 --- a/include/boost/decimal/detail/int128/detail/constants.hpp +++ b/include/boost/decimal/detail/int128/detail/constants.hpp @@ -12,10 +12,10 @@ namespace boost { namespace int128 { namespace detail { -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t low_word_mask {(std::numeric_limits::max)()}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t low_word_mask {(std::numeric_limits::max)()}; template -BOOST_DECIMAL_CONSTEXPR_VARIABLE T offset_value_v = static_cast((std::numeric_limits::max)()); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE T offset_value_v = static_cast((std::numeric_limits::max)()); } // namespace detail } // namespace int128 diff --git a/include/boost/decimal/detail/int128/detail/conversions.hpp b/include/boost/decimal/detail/int128/detail/conversions.hpp index 27c65df82..c9d45528a 100644 --- a/include/boost/decimal/detail/int128/detail/conversions.hpp +++ b/include/boost/decimal/detail/int128/detail/conversions.hpp @@ -20,7 +20,7 @@ struct valid_overload }; template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool is_valid_overload_v = valid_overload::value; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_valid_overload_v = valid_overload::value; } // namespace detail diff --git a/include/boost/decimal/detail/int128/detail/ctz.hpp b/include/boost/decimal/detail/int128/detail/ctz.hpp index f83be5dd3..84c74a160 100644 --- a/include/boost/decimal/detail/int128/detail/ctz.hpp +++ b/include/boost/decimal/detail/int128/detail/ctz.hpp @@ -34,7 +34,7 @@ constexpr int countr_impl(unsigned long long x) noexcept #endif -BOOST_DECIMAL_CONSTEXPR_VARIABLE int countr_mod37[37] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int countr_mod37[37] = { 32, 0, 1, 26, 2, 23, 27, 0, 3, 16, 24, 30, 28, 11, 0, 13, 4, 7, 17, 0, 25, 22, 31, 15, diff --git a/include/boost/decimal/detail/int128/detail/mini_from_chars.hpp b/include/boost/decimal/detail/int128/detail/mini_from_chars.hpp index d12b2a1f0..ffb92a9a5 100644 --- a/include/boost/decimal/detail/int128/detail/mini_from_chars.hpp +++ b/include/boost/decimal/detail/int128/detail/mini_from_chars.hpp @@ -17,7 +17,7 @@ namespace int128 { namespace detail { namespace impl { -BOOST_DECIMAL_CONSTEXPR_VARIABLE unsigned char uchar_values[] = +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE unsigned char uchar_values[] = {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, diff --git a/include/boost/decimal/detail/int128/detail/mini_to_chars.hpp b/include/boost/decimal/detail/int128/detail/mini_to_chars.hpp index d58e1d7e6..76659d8c2 100644 --- a/include/boost/decimal/detail/int128/detail/mini_to_chars.hpp +++ b/include/boost/decimal/detail/int128/detail/mini_to_chars.hpp @@ -13,14 +13,14 @@ namespace boost { namespace int128 { namespace detail { -BOOST_DECIMAL_CONSTEXPR_VARIABLE char lower_case_digit_table[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE char lower_case_digit_table[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; static_assert(sizeof(lower_case_digit_table) == sizeof(char) * 16, "10 numbers, and 6 letters"); -BOOST_DECIMAL_CONSTEXPR_VARIABLE char upper_case_digit_table[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE char upper_case_digit_table[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; diff --git a/include/boost/decimal/detail/int128/detail/traits.hpp b/include/boost/decimal/detail/int128/detail/traits.hpp index f0d72df1c..f7a35044a 100644 --- a/include/boost/decimal/detail/int128/detail/traits.hpp +++ b/include/boost/decimal/detail/int128/detail/traits.hpp @@ -25,7 +25,7 @@ struct signed_integer }; template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool is_signed_integer_v = signed_integer::value; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_signed_integer_v = signed_integer::value; template struct unsigned_integer @@ -39,10 +39,10 @@ struct unsigned_integer }; template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool is_unsigned_integer_v = unsigned_integer::value; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_unsigned_integer_v = unsigned_integer::value; template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool is_any_integer_v = signed_integer::value || unsigned_integer::value; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_any_integer_v = signed_integer::value || unsigned_integer::value; // Decides if we can use a u32 or u64 implementation for some operations diff --git a/include/boost/decimal/detail/int128/iostream.hpp b/include/boost/decimal/detail/int128/iostream.hpp index 157dfe171..8dc094a06 100644 --- a/include/boost/decimal/detail/int128/iostream.hpp +++ b/include/boost/decimal/detail/int128/iostream.hpp @@ -26,7 +26,7 @@ struct streamable_overload }; template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool is_streamable_overload_v = streamable_overload::value; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_streamable_overload_v = streamable_overload::value; } // namespace detail diff --git a/include/boost/decimal/detail/int128/numeric.hpp b/include/boost/decimal/detail/int128/numeric.hpp index 36932b614..2bde6a794 100644 --- a/include/boost/decimal/detail/int128/numeric.hpp +++ b/include/boost/decimal/detail/int128/numeric.hpp @@ -35,7 +35,7 @@ struct reduced_integers #if defined(BOOST_DECIMAL_DETAIL_INT128_HAS_INT128) || defined(BOOST_DECIMAL_DETAIL_INT128_HAS_MSVC_INT128) template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool is_reduced_integer_v {reduced_integers::value || +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_reduced_integer_v {reduced_integers::value || std::is_same::value || std::is_same::value}; diff --git a/include/boost/decimal/detail/power_tables.hpp b/include/boost/decimal/detail/power_tables.hpp index d496c642c..3e0e9f83c 100644 --- a/include/boost/decimal/detail/power_tables.hpp +++ b/include/boost/decimal/detail/power_tables.hpp @@ -20,13 +20,13 @@ namespace detail { namespace impl { -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint32_t powers_of_10_u32[10] = +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint32_t powers_of_10_u32[10] = { UINT32_C(1), UINT32_C(10), UINT32_C(100), UINT32_C(1000), UINT32_C(10000), UINT32_C(100000), UINT32_C(1000000), UINT32_C(10000000), UINT32_C(100000000), UINT32_C(1000000000), }; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t powers_of_10[20] = +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t powers_of_10[20] = { UINT64_C(1), UINT64_C(10), UINT64_C(100), UINT64_C(1000), UINT64_C(10000), UINT64_C(100000), UINT64_C(1000000), UINT64_C(10000000), UINT64_C(100000000), UINT64_C(1000000000), UINT64_C(10000000000), UINT64_C(100000000000), @@ -35,7 +35,7 @@ BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t powers_of_10[20] = UINT64_C(10000000000000000000) }; -BOOST_DECIMAL_CONSTEXPR_VARIABLE boost::int128::uint128_t BOOST_DECIMAL_DETAIL_INT128_pow10[] = +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE boost::int128::uint128_t BOOST_DECIMAL_DETAIL_INT128_pow10[] = { boost::int128::uint128_t {UINT64_C(0), UINT64_C(1)}, boost::int128::uint128_t {UINT64_C(0), UINT64_C(10)}, @@ -81,7 +81,7 @@ BOOST_DECIMAL_CONSTEXPR_VARIABLE boost::int128::uint128_t BOOST_DECIMAL_DETAIL_I #ifdef BOOST_DECIMAL_HAS_INT128 -BOOST_DECIMAL_CONSTEXPR_VARIABLE detail::builtin_uint128_t builtin_128_pow10[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE detail::builtin_uint128_t builtin_128_pow10[] = { detail::builtin_uint128_t(1), detail::builtin_uint128_t(10), detail::builtin_uint128_t(100), @@ -128,7 +128,7 @@ static_assert(sizeof(builtin_128_pow10) == sizeof(boost::decimal::detail::builti #endif -BOOST_DECIMAL_CONSTEXPR_VARIABLE u256 u256_pow_10[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE u256 u256_pow_10[] = { u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1)}}, u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10)}}, u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(100)}}, diff --git a/include/boost/decimal/detail/ryu/generic_128.hpp b/include/boost/decimal/detail/ryu/generic_128.hpp index 5e396f0d4..0253c83e0 100644 --- a/include/boost/decimal/detail/ryu/generic_128.hpp +++ b/include/boost/decimal/detail/ryu/generic_128.hpp @@ -30,7 +30,7 @@ using unsigned_128_type = boost::int128::uint128_t; // There's no way to define 128-bit constants in C, so we use little-endian // pairs of 64-bit constants. -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_TABLE[BOOST_DECIMAL_POW5_TABLE_SIZE][2] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_TABLE[BOOST_DECIMAL_POW5_TABLE_SIZE][2] = { { UINT64_C( 1), UINT64_C( 0) }, { UINT64_C( 5), UINT64_C( 0) }, { UINT64_C( 25), UINT64_C( 0) }, @@ -89,7 +89,7 @@ BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_TABLE[BOOST_DECIMAL_ { UINT64_C(18443565265187884909), UINT64_C(15046327690525280101) } }; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_SPLIT[89][4] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_SPLIT[89][4] = { { UINT64_C( 0), UINT64_C( 0), UINT64_C( 0), UINT64_C( 72057594037927936) }, { UINT64_C( 0), UINT64_C( 5206161169240293376), UINT64_C( 4575641699882439235), UINT64_C( 73468396926392969) }, { UINT64_C( 3360510775605221349), UINT64_C( 6983200512169538081), UINT64_C( 4325643253124434363), UINT64_C( 74906821675075173) }, @@ -183,7 +183,7 @@ BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_SPLIT[89][4] = { // Unfortunately, the results are sometimes off by one or two. We use an additional // lookup table to store those cases and adjust the result. -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t POW5_ERRORS[156] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t POW5_ERRORS[156] = { UINT64_C(0x0000000000000000), UINT64_C(0x0000000000000000), UINT64_C(0x0000000000000000), UINT64_C(0x9555596400000000), UINT64_C(0x65a6569525565555), UINT64_C(0x4415551445449655), UINT64_C(0x5105015504144541), UINT64_C(0x65a69969a6965964), UINT64_C(0x5054955969959656), UINT64_C(0x5105154515554145), UINT64_C(0x4055511051591555), UINT64_C(0x5500514455550115), @@ -225,7 +225,7 @@ UINT64_C(0x5554655255559545), UINT64_C(0x9555455441155556), UINT64_C(0x000000005 UINT64_C(0x5044044040000000), UINT64_C(0x1045040440010500), UINT64_C(0x0000400000040000), UINT64_C(0x0000000000000000) }; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_INV_SPLIT[89][4] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_INV_SPLIT[89][4] = { { UINT64_C( 0), UINT64_C( 0), UINT64_C( 0), UINT64_C(144115188075855872) }, { UINT64_C( 1573859546583440065), UINT64_C( 2691002611772552616), UINT64_C( 6763753280790178510), UINT64_C(141347765182270746) }, { UINT64_C(12960290449513840412), UINT64_C(12345512957918226762), UINT64_C(18057899791198622765), UINT64_C(138633484706040742) }, @@ -317,7 +317,7 @@ BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t GENERIC_POW5_INV_SPLIT[89][4] = { { UINT64_C( 7184427196661305643), UINT64_C(14332510582433188173), UINT64_C(14230167953789677901), UINT64_C(104649889046128358) } }; -BOOST_DECIMAL_CONSTEXPR_VARIABLE std::uint64_t POW5_INV_ERRORS[154] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t POW5_INV_ERRORS[154] = { UINT64_C(0x1144155514145504), UINT64_C(0x0000541555401141), UINT64_C(0x0000000000000000), UINT64_C(0x0154454000000000), UINT64_C(0x4114105515544440), UINT64_C(0x0001001111500415), UINT64_C(0x4041411410011000), UINT64_C(0x5550114515155014), UINT64_C(0x1404100041554551), UINT64_C(0x0515000450404410), UINT64_C(0x5054544401140004), UINT64_C(0x5155501005555105), diff --git a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp index b3a7a3b8a..ce4b3b4d5 100644 --- a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp +++ b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp @@ -28,8 +28,8 @@ namespace decimal { namespace detail { namespace ryu { -BOOST_DECIMAL_CONSTEXPR_VARIABLE int32_t fd128_exceptional_exponent = 0x7FFFFFFF; -BOOST_DECIMAL_CONSTEXPR_VARIABLE unsigned_128_type one = 1; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int32_t fd128_exceptional_exponent = 0x7FFFFFFF; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE unsigned_128_type one = 1; struct floating_decimal_128 { diff --git a/include/boost/decimal/detail/to_chars_integer_impl.hpp b/include/boost/decimal/detail/to_chars_integer_impl.hpp index 2feedf043..d2bd6e9c0 100644 --- a/include/boost/decimal/detail/to_chars_integer_impl.hpp +++ b/include/boost/decimal/detail/to_chars_integer_impl.hpp @@ -31,7 +31,7 @@ namespace boost { namespace decimal { namespace detail { -BOOST_DECIMAL_CONSTEXPR_VARIABLE char digit_table[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE char digit_table[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', @@ -106,7 +106,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_integer_impl(char* first, char* last, Inte // Specialization for base-10 -BOOST_DECIMAL_CONSTEXPR_VARIABLE char radix_table[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE char radix_table[] = { '0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '0', '8', '0', '9', '1', '0', '1', '1', '1', '2', '1', '3', '1', '4', diff --git a/include/boost/decimal/detail/type_traits.hpp b/include/boost/decimal/detail/type_traits.hpp index 025016f48..269ca2f12 100644 --- a/include/boost/decimal/detail/type_traits.hpp +++ b/include/boost/decimal/detail/type_traits.hpp @@ -197,7 +197,7 @@ struct conjunction : std::conditional_t(B1::value), conjunction, B1> {}; template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool conjunction_v = conjunction::value; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool conjunction_v = conjunction::value; } // namespace detail } // namespace decimal diff --git a/include/boost/decimal/numbers.hpp b/include/boost/decimal/numbers.hpp index 25ac9d1d5..f61fc0d6c 100644 --- a/include/boost/decimal/numbers.hpp +++ b/include/boost/decimal/numbers.hpp @@ -253,82 +253,82 @@ constexpr auto phi_v() noexcept -> DecimalType } // Namespace detail BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec e_v = detail::e_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec e_v = detail::e_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec log2e_v = detail::log2e_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec log2e_v = detail::log2e_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec log10e_v = detail::log10e_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec log10e_v = detail::log10e_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec log10_2_v = detail::log10_2_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec log10_2_v = detail::log10_2_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec pi_v = detail::pi_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec pi_v = detail::pi_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec pi_over_four_v = detail::pi_over_four_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec pi_over_four_v = detail::pi_over_four_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec inv_pi_v = detail::inv_pi_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec inv_pi_v = detail::inv_pi_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec inv_sqrtpi_v = detail::inv_sqrtpi_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec inv_sqrtpi_v = detail::inv_sqrtpi_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec ln2_v = detail::ln2_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec ln2_v = detail::ln2_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec ln10_v = detail::ln10_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec ln10_v = detail::ln10_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec sqrt2_v = detail::sqrt2_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec sqrt2_v = detail::sqrt2_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec sqrt3_v = detail::sqrt3_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec sqrt3_v = detail::sqrt3_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec sqrt10_v = detail::sqrt10_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec sqrt10_v = detail::sqrt10_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec cbrt2_v = detail::cbrt2_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec cbrt2_v = detail::cbrt2_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec cbrt10_v = detail::cbrt10_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec cbrt10_v = detail::cbrt10_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec inv_sqrt2_v = detail::inv_sqrt2_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec inv_sqrt2_v = detail::inv_sqrt2_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec inv_sqrt3_v = detail::inv_sqrt3_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec inv_sqrt3_v = detail::inv_sqrt3_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec egamma_v = detail::egamma_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec egamma_v = detail::egamma_v(); BOOST_DECIMAL_EXPORT template , bool> = true> -BOOST_DECIMAL_CONSTEXPR_VARIABLE Dec phi_v = detail::phi_v(); +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE Dec phi_v = detail::phi_v(); // Explicitly defaulted variables like the STL provides -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto e {e_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto log10_2 {log10_2_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto log10e {log10e_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto log2e {log2e_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto pi {pi_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto inv_pi {inv_pi_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto inv_sqrtpi {inv_sqrtpi_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto ln2 {ln2_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto ln10 {ln10_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto sqrt2 {sqrt2_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto sqrt3 {sqrt3_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto sqrt10 {sqrt10_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto cbrt2 {cbrt2_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto cbrt10 {cbrt10_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto inv_sqrt2 {inv_sqrt2_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto inv_sqrt3 {inv_sqrt3_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto egamma {egamma_v}; -BOOST_DECIMAL_EXPORT BOOST_DECIMAL_CONSTEXPR_VARIABLE auto phi {phi_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto e {e_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto log10_2 {log10_2_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto log10e {log10e_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto log2e {log2e_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto pi {pi_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto inv_pi {inv_pi_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto inv_sqrtpi {inv_sqrtpi_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto ln2 {ln2_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto ln10 {ln10_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto sqrt2 {sqrt2_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto sqrt3 {sqrt3_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto sqrt10 {sqrt10_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto cbrt2 {cbrt2_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto cbrt10 {cbrt10_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto inv_sqrt2 {inv_sqrt2_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto inv_sqrt3 {inv_sqrt3_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto egamma {egamma_v}; +BOOST_DECIMAL_EXPORT BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto phi {phi_v}; } // namespace numbers } // namespace decimal From 4bd0f498fce9984209e8f7239731708ae3a2c485 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 9 Sep 2025 16:17:01 +0200 Subject: [PATCH 096/967] Add both a constexpr and runtime rounding mode option --- include/boost/decimal/cfenv.hpp | 56 ++++++++++++++++++++++++++++----- 1 file changed, 49 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/cfenv.hpp b/include/boost/decimal/cfenv.hpp index 072755bcf..60243ff89 100644 --- a/include/boost/decimal/cfenv.hpp +++ b/include/boost/decimal/cfenv.hpp @@ -24,22 +24,64 @@ BOOST_DECIMAL_EXPORT enum class rounding_mode : unsigned fe_dec_default = fe_dec_to_nearest }; -BOOST_DECIMAL_INLINE_VARIABLE rounding_mode _boost_decimal_global_rounding_mode {rounding_mode::fe_dec_default}; +#ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto _boost_decimal_global_rounding_mode { + #ifdef BOOST_DECIMAL_FE_DEC_DOWNWARD + rounding_mode::fe_dec_downward + #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST) + rounding_mode::fe_dec_to_nearest + #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST_FROM_ZERO) + rounding_mode::fe_dec_to_nearest_from_zero + #elif defined (BOOST_DECIMAL_FE_DEC_TOWARD_ZERO) + rounding_mde::fe_dec_toward_zero + #elif defined(BOOST_DECIMAL_FE_DEC_UPWARD) + rounding_mode::fe_dec_upward + #else + rounding_mode::fe_dec_default + #endif +}; + +BOOST_DECIMAL_INLINE_VARIABLE auto _boost_decimal_global_runtime_rounding_mode {_boost_decimal_global_rounding_mode}; BOOST_DECIMAL_EXPORT inline auto fegetround() noexcept -> rounding_mode { - return _boost_decimal_global_rounding_mode; + return _boost_decimal_global_runtime_rounding_mode; } -// If we can't support constexpr and non-constexpr code paths we won't honor the updated rounding-mode, -// since it will not be used anyway. -// Return the default rounding mode -BOOST_DECIMAL_EXPORT inline auto fesetround(const rounding_mode round) noexcept -> rounding_mode +// We can only apply updates to the runtime rounding mode +// Return the current rounding mode to the user +// NOTE: This is only updated when we have the ability to make consteval branches, +// otherwise we don't update and still let the user know what the currently applied rounding mode is +BOOST_DECIMAL_EXPORT inline auto fesetround(BOOST_DECIMAL_ATTRIBUTE_UNUSED const rounding_mode round) noexcept -> rounding_mode { - _boost_decimal_global_rounding_mode = round; + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + _boost_decimal_global_runtime_rounding_mode = round; + #endif + return round; } +#else + +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto _boost_decimal_global_rounding_mode { + #ifdef BOOST_DECIMAL_FE_DEC_DOWNWARD + rounding_mode::fe_dec_downward + #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST) + rounding_mode::fe_dec_to_nearest + #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST_FROM_ZERO) + rounding_mode::fe_dec_to_nearest_from_zero + #elif defined (BOOST_DECIMAL_FE_DEC_TOWARD_ZERO) + rounding_mde::fe_dec_toward_zero + #elif defined(BOOST_DECIMAL_FE_DEC_UPWARD) + rounding_mode::fe_dec_upward + #else + rounding_mode::fe_dec_default + #endif +}; + +#endif + } // namespace decimal } // namespace boost From f9b84c3f4b3595b91e929350feea9086c0828a9b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 10:42:31 +0200 Subject: [PATCH 097/967] Fix modular inclusion of bit --- include/boost/decimal/detail/config.hpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/config.hpp b/include/boost/decimal/detail/config.hpp index 312922667..848ccca92 100644 --- a/include/boost/decimal/detail/config.hpp +++ b/include/boost/decimal/detail/config.hpp @@ -32,7 +32,9 @@ #if __has_include() # if __cplusplus >= 201806L || (defined(_MSVC_LANG) && (_MSVC_LANG >= 201806L)) -# include +# ifndef BOOST_DECIMAL_BUILD_MODULE +# include +# endif # define BOOST_DECIMAL_HAS_STDBIT # if defined(__cpp_lib_bit_cast) && (__cpp_lib_bit_cast >= 201806L) # define BOOST_DECIMAL_HAS_CONSTEXPR_BITCAST From aac4204fdbc109a96a65431b5e8e3d0814130d4d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 11:06:19 +0200 Subject: [PATCH 098/967] Prepare for removal of defaulted template parameter --- include/boost/decimal/charconv.hpp | 4 ++-- include/boost/decimal/decimal_fast32_t.hpp | 4 ++-- include/boost/decimal/detail/cmath/rescale.hpp | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index fbd5a7fe8..9a49b94e3 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -407,7 +407,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_scientific_impl(char* first, char* last, c significand /= pow10(static_cast(digits_to_remove)); significand_digits -= digits_to_remove; const auto original_sig {significand}; - fenv_round(significand); + fenv_round(significand); if (remove_trailing_zeros(original_sig + 1U).trimmed_number == 1U) { ++exp; @@ -428,7 +428,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_scientific_impl(char* first, char* last, c else if (significand_digits > local_precision + 1) { const auto original_sig = significand; - fenv_round(significand); + fenv_round(significand); if (remove_trailing_zeros(original_sig + 1U).trimmed_number == 1U) { ++exp; diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 699310dd1..b814233eb 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -895,7 +895,7 @@ constexpr auto operator*(const decimal_fast32_t lhs, const decimal_fast32_t rhs) auto res_exp {lhs.exponent_ + rhs.exponent_}; res_exp -= res_sig_14_dig ? ten_pow_seven_exp_offset : ten_pow_six_exp_offset; - res_exp += detail::fenv_round(res_sig, isneg); + res_exp += detail::fenv_round(res_sig, isneg); BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); BOOST_DECIMAL_ASSERT(res_exp <= 9'999'999 || res_sig == 0U); @@ -1008,7 +1008,7 @@ constexpr auto div_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, // If we have 8 figures round it down to 7 if (res_sig >= UINT64_C(10'000'000)) { - res_exp += detail::fenv_round(res_sig, isneg); + res_exp += detail::fenv_round(res_sig, isneg); } BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); diff --git a/include/boost/decimal/detail/cmath/rescale.hpp b/include/boost/decimal/detail/cmath/rescale.hpp index 292bce565..c2f5e3c78 100644 --- a/include/boost/decimal/detail/cmath/rescale.hpp +++ b/include/boost/decimal/detail/cmath/rescale.hpp @@ -58,7 +58,7 @@ constexpr auto rescale(const T val, const int precision = 0) noexcept if (sig_dig > precision) { - exp += detail::fenv_round(sig, isneg); + exp += detail::fenv_round(sig, isneg); } return {sig, exp, isneg}; From 1fd2b3e6b5f51d7f75076d8e7f73f217457c65cb Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 11:06:40 +0200 Subject: [PATCH 099/967] Unify impl for both constexpr and runtime rounding mode changes --- .../boost/decimal/detail/fenv_rounding.hpp | 120 ++++++++---------- 1 file changed, 50 insertions(+), 70 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 3a7ae9d0e..07a9a79f3 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -18,107 +18,87 @@ namespace detail { namespace impl { -template -constexpr auto fenv_round_constexpr_impl(T& val, const U max_sig, const bool, const bool sticky) noexcept +template +constexpr auto fenv_round_impl(T& val, const bool is_neg, const bool sticky, const rounding_mode round = _boost_decimal_global_rounding_mode) noexcept -> int { - const auto trailing_num {val % 10U}; + using significand_type = std::conditional_t >= 128, int128::uint128_t, std::int64_t>; + + int exp {1}; + + const auto trailing_num {static_cast(val % 10U)}; val /= 10U; - int exp_delta {1}; - if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && val % 2U == 1U)) + // Default rounding mode + switch (round) { - ++val; + case rounding_mode::fe_dec_to_nearest_from_zero: + if (trailing_num >= 5U) + { + ++val; + } + break; + case rounding_mode::fe_dec_downward: + if (is_neg && (trailing_num != 0U || sticky)) + { + ++val; + } + break; + case rounding_mode::fe_dec_to_nearest: + // Round to even or nearest + if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && (static_cast(val) & 1U) == 1U)) + { + ++val; + } + break; + case rounding_mode::fe_dec_toward_zero: + // Do nothing + break; + case rounding_mode::fe_dec_upward: + if (!is_neg && (trailing_num != 0U || sticky)) + { + ++val; + } + break; + // LCOV_EXCL_START + default: + BOOST_DECIMAL_UNREACHABLE; + // LCOV_EXCL_STOP } // If the significand was e.g. 99'999'999 rounding up // would put it out of range again - - if (static_cast(val) > max_sig) + if (BOOST_DECIMAL_UNLIKELY(static_cast(val) > max_significand_v())) { val /= 10U; - ++exp_delta; + ++exp; } - return exp_delta; + return exp; } } #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION -// Rounds the value provided and returns an offset of exponent values as required -template , bool> = true> +template , bool> = true> constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noexcept -> int { - return impl::fenv_round_constexpr_impl(val, max_significand_v, is_neg, sticky); + return impl::fenv_round_impl(val, is_neg, sticky); } #else -template , bool> = true> +template , bool> = true> constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noexcept -> int // NOLINT(readability-function-cognitive-complexity) { - using significand_type = std::conditional_t >= 128, int128::uint128_t, std::int64_t>; - if (BOOST_DECIMAL_IS_CONSTANT_EVALUATED(coeff)) { - return impl::fenv_round_constexpr_impl(val, max_significand_v, is_neg, sticky); + return impl::fenv_round_impl(val, is_neg, sticky); } else { const auto round {fegetround()}; - int exp {1}; - - const auto trailing_num {static_cast(val % 10U)}; - val /= 10U; - - // Default rounding mode - switch (round) - { - case rounding_mode::fe_dec_to_nearest_from_zero: - if (trailing_num >= 5U) - { - ++val; - } - break; - case rounding_mode::fe_dec_downward: - if (is_neg && (trailing_num != 0U || sticky)) - { - ++val; - } - break; - case rounding_mode::fe_dec_to_nearest: - // Round to even or nearest - if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && (static_cast(val) & 1U) == 1U)) - { - ++val; - } - break; - case rounding_mode::fe_dec_toward_zero: - // Do nothing - break; - case rounding_mode::fe_dec_upward: - if (!is_neg && (trailing_num != 0U || sticky)) - { - ++val; - } - break; - // LCOV_EXCL_START - default: - BOOST_DECIMAL_UNREACHABLE; - // LCOV_EXCL_STOP - } - - // If the significand was e.g. 99'999'999 rounding up - // would put it out of range again - - if (BOOST_DECIMAL_UNLIKELY(static_cast(val) > max_significand_v)) - { - val /= 10U; - ++exp; - } - - return exp; + return impl::fenv_round_impl(val, is_neg, sticky, round); } } @@ -130,7 +110,7 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex #endif template -BOOST_DECIMAL_FORCE_INLINE constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bool sign) noexcept +constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bool sign) noexcept { auto coeff_digits {detail::num_digits(coeff)}; From 43bdd0e68430ec65470cdac64e9179404031a541 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 11:22:03 +0200 Subject: [PATCH 100/967] Add documentation on the new compile time rounding mode --- doc/modules/ROOT/pages/api_reference.adoc | 2 +- doc/modules/ROOT/pages/cfenv.adoc | 37 +++++++++++++++++++++-- doc/modules/ROOT/pages/config.adoc | 6 ++-- 3 files changed, 39 insertions(+), 6 deletions(-) diff --git a/doc/modules/ROOT/pages/api_reference.adoc b/doc/modules/ROOT/pages/api_reference.adoc index d57f1e507..3fd590be3 100644 --- a/doc/modules/ROOT/pages/api_reference.adoc +++ b/doc/modules/ROOT/pages/api_reference.adoc @@ -51,7 +51,7 @@ enums, constants and macros that are provided in this library. | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_IOSTREAM`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_CONSTEXPR`] | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CLIB`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_CHARCONV`] | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_EXCEPTIONS`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_STRING_VIEW`] -| xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`] | +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_NO_CONSTEVAL_DETECTION`] | xref:config.adoc#configuration_user[`BOOST_DECIMAL_FAST_MATH`] | | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DEC_EVAL_METHOD`] | |=== diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 3bad679d1..213085011 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -20,7 +20,7 @@ IEEE 754 defines 5 rounding modes for Decimal Floating Point Types. NOTE: The default rounding mode is to nearest with ties to even (#2) as specified in IEEE 754 Section 4.3.3 -IMPORTANT: The rounding mode can only be changed at runtime. All `constexpr` calculations will use the default of to nearest from zero. +Using the following `enum class` and functions you can change the rounding mode from the default at *RUNTIME* only if xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_NO_CONSTEVAL_DETECTION`] is not defined. [source, c++] ---- @@ -46,4 +46,37 @@ rounding_mode fesetround(rounding_mode round) noexcept; } //namespace boost ---- -Prior to v5.2.0 this header was ``, but has been changed to `` for consistency with the STL. +You can similarly change the default rounding mode at compile time with any compiler (unlike at runtime) using similarly named macros: + +[source, c++] +---- + +namespace boost { +namespace decimal { + +static constexpr rounding_mode _boost_decimal_global_rounding_mode { + #if defined(BOOST_DECIMAL_FE_DEC_DOWNWARD) + rounding_mode::fe_dec_downward + #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST) + rounding_mode::fe_dec_to_nearest + #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST_FROM_ZERO) + rounding_mode::fe_dec_to_nearest_from_zero + #elif defined (BOOST_DECIMAL_FE_DEC_TOWARD_ZERO) + rounding_mde::fe_dec_toward_zero + #elif defined(BOOST_DECIMAL_FE_DEC_UPWARD) + rounding_mode::fe_dec_upward + #else + rounding_mode::fe_dec_default + #endif +}; + +} // namespace decimal +} // namespace boost + +---- + +The default rounding mode for compile time is the same as the default run-time. + +NOTE: There is no requirement to explicitly define a compile-time nor run-time rounding mode + +IMPORTANT: Prior to v5.2.0 this header was ``, but has been changed to `` for consistency with the STL. diff --git a/doc/modules/ROOT/pages/config.adoc b/doc/modules/ROOT/pages/config.adoc index 4194cd3b6..3b0e9e754 100644 --- a/doc/modules/ROOT/pages/config.adoc +++ b/doc/modules/ROOT/pages/config.adoc @@ -53,9 +53,9 @@ Again, it must be defined before inclusion of decimal headers like so: - `BOOST_DECIMAL_CXX20_CONSTEXPR`: This is defined to `constexpr` when compiling with C++20 or greater, otherwise it expands to nothing. -- `BOOST_DECIMAL_CONSTEXPR`: This is defined to `constexpr` when any of the following are met: - * _MSC_FULL_VER >= 192528326 - * __GNUC__ >= 9 +- `BOOST_DECIMAL_CONSTEXPR`: This is defined to `constexpr` when any of the following are met, or `BOOST_DECIMAL_NO_CONSTEVAL_DETECTION` is when they are not met : + * pass:[_MSC_FULL_VER] >= 192528326 + * pass:[__GNUC__] >= 9 * Compiler has: __builtin_is_constant_evaluated() * C++20 support with: std::is_constant_evaluated() From fd33791548c38cab6ef56b308a735b98e903cb33 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 11:23:53 +0200 Subject: [PATCH 101/967] Add note on return of fesetround --- doc/modules/ROOT/pages/cfenv.adoc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 213085011..9feeb8b83 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -40,6 +40,12 @@ enum class rounding_mode : unsigned }; rounding_mode fegetround() noexcept; + +// Returns the rounding mode that has been set +// +// If your compiler defines BOOST_DECIMAL_NO_CONSTEVAL_DETECTION, +// this function will return the default rounding mode +// to alert you that the rounding mode has NOT changed rounding_mode fesetround(rounding_mode round) noexcept; } //namespace decimal From 032b4677d93b5425a73120e5db4d1ea42d29fe58 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 11:27:14 +0200 Subject: [PATCH 102/967] Remove un needed path --- include/boost/decimal/cfenv.hpp | 22 ---------------------- 1 file changed, 22 deletions(-) diff --git a/include/boost/decimal/cfenv.hpp b/include/boost/decimal/cfenv.hpp index 60243ff89..6acba7ad4 100644 --- a/include/boost/decimal/cfenv.hpp +++ b/include/boost/decimal/cfenv.hpp @@ -24,8 +24,6 @@ BOOST_DECIMAL_EXPORT enum class rounding_mode : unsigned fe_dec_default = fe_dec_to_nearest }; -#ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION - BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto _boost_decimal_global_rounding_mode { #ifdef BOOST_DECIMAL_FE_DEC_DOWNWARD rounding_mode::fe_dec_downward @@ -62,26 +60,6 @@ BOOST_DECIMAL_EXPORT inline auto fesetround(BOOST_DECIMAL_ATTRIBUTE_UNUSED const return round; } -#else - -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto _boost_decimal_global_rounding_mode { - #ifdef BOOST_DECIMAL_FE_DEC_DOWNWARD - rounding_mode::fe_dec_downward - #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST) - rounding_mode::fe_dec_to_nearest - #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST_FROM_ZERO) - rounding_mode::fe_dec_to_nearest_from_zero - #elif defined (BOOST_DECIMAL_FE_DEC_TOWARD_ZERO) - rounding_mde::fe_dec_toward_zero - #elif defined(BOOST_DECIMAL_FE_DEC_UPWARD) - rounding_mode::fe_dec_upward - #else - rounding_mode::fe_dec_default - #endif -}; - -#endif - } // namespace decimal } // namespace boost From 1a9255d09d7e682ce989f36d731a4d6639e6f720 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 11:42:26 +0200 Subject: [PATCH 103/967] Add test set for setting and changing compile and runtime rounding mode --- test/Jamfile | 1 + test/test_constexpr_rounding_mode.cpp | 28 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) create mode 100644 test/test_constexpr_rounding_mode.cpp diff --git a/test/Jamfile b/test/Jamfile index 49cebddfb..15caa50a6 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -102,6 +102,7 @@ run test_boost_math_univariate_stats.cpp ; run test_cbrt.cpp ; run test_cmath.cpp ; run test_constants.cpp ; +run test_constexpr_rounding_mode.cpp ; run test_cosh.cpp ; #run test_decimal32.cpp ; run test_decimal32_fast_basis.cpp ; diff --git a/test/test_constexpr_rounding_mode.cpp b/test/test_constexpr_rounding_mode.cpp new file mode 100644 index 000000000..a69154e61 --- /dev/null +++ b/test/test_constexpr_rounding_mode.cpp @@ -0,0 +1,28 @@ +// Copyright 2023 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + + +#define BOOST_DECIMAL_FE_DEC_DOWNWARD +#include +#include + +using namespace boost::decimal; + +int main() +{ + BOOST_TEST(_boost_decimal_global_rounding_mode == rounding_mode::fe_dec_downward); + BOOST_TEST(_boost_decimal_global_rounding_mode == _boost_decimal_global_runtime_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == rounding_mode::fe_dec_downward); + + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + BOOST_TEST(boost::decimal::fesetround(rounding_mode::fe_dec_default) == rounding_mode::fe_dec_default); + BOOST_TEST(_boost_decimal_global_rounding_mode == rounding_mode::fe_dec_downward); + BOOST_TEST(_boost_decimal_global_rounding_mode != _boost_decimal_global_runtime_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == rounding_mode::fe_dec_default); + + #endif + + return boost::report_errors(); +} From 86a3017eb7cb0117714c89e94d9f3dc79fb2d021 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 12:00:06 +0200 Subject: [PATCH 104/967] Fix renaming not automatically done by IDE --- include/boost/decimal/detail/countl.hpp | 2 +- include/boost/decimal/detail/int128/numeric.hpp | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/countl.hpp b/include/boost/decimal/detail/countl.hpp index 9b4f0a0e2..21bb76360 100644 --- a/include/boost/decimal/detail/countl.hpp +++ b/include/boost/decimal/detail/countl.hpp @@ -51,7 +51,7 @@ constexpr int countl_impl(unsigned long long x) noexcept #else -BOOST_DECIMAL_CONSTEXPR_VARIABLE int index64[64] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int index64[64] = { 0, 47, 1, 56, 48, 27, 2, 60, 57, 49, 41, 37, 28, 16, 3, 61, 54, 58, 35, 52, 50, 42, 21, 44, diff --git a/include/boost/decimal/detail/int128/numeric.hpp b/include/boost/decimal/detail/int128/numeric.hpp index 2bde6a794..ceecb660c 100644 --- a/include/boost/decimal/detail/int128/numeric.hpp +++ b/include/boost/decimal/detail/int128/numeric.hpp @@ -42,7 +42,7 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_reduced_integer_v {reduced_integ #else template -BOOST_DECIMAL_CONSTEXPR_VARIABLE bool is_reduced_integer_v {reduced_integers::value}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE bool is_reduced_integer_v {reduced_integers::value}; #endif // 128-bit From 5d0088531cddcbe8450770a9e41228fd5932a0aa Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 12:15:51 +0200 Subject: [PATCH 105/967] Add note on renaming --- doc/modules/ROOT/pages/cmath.adoc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 872b20c9a..ad73c4edf 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -679,3 +679,5 @@ constexpr Decimal rescale(Decimal val, int precision = 0); The function returns the decimal type with number of fractional digits equal to the value of precision. `rescale` is similar to https://en.cppreference.com/w/cpp/numeric/math/trunc[trunc], and with the default precision argument of 0 it is identical. + +NOTE: This function was previously known as `trunc_to` which was deprecated in v5.0.0 and removed in v6.0.0 From 80d66d23b1f68d098b1c2a7b4f0060d2f35279b6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 12:16:18 +0200 Subject: [PATCH 106/967] Remove deprecated function --- include/boost/decimal/detail/cmath/rescale.hpp | 8 -------- 1 file changed, 8 deletions(-) diff --git a/include/boost/decimal/detail/cmath/rescale.hpp b/include/boost/decimal/detail/cmath/rescale.hpp index 292bce565..e31205799 100644 --- a/include/boost/decimal/detail/cmath/rescale.hpp +++ b/include/boost/decimal/detail/cmath/rescale.hpp @@ -64,14 +64,6 @@ constexpr auto rescale(const T val, const int precision = 0) noexcept return {sig, exp, isneg}; } -BOOST_DECIMAL_EXPORT template -[[deprecated("Renamed to rescale to match existing literature")]] -constexpr auto trunc_to(T val, int precision = 0) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) -{ - return rescale(val, precision); -} - } // namespace decimal } // namespace boost From 80e5aa5cd6cfcb80272a07232cd8ec24395061f7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 10 Sep 2025 12:54:58 +0200 Subject: [PATCH 107/967] Behavior was changed for non constexpr platforms --- test/test_fenv.cpp | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/test/test_fenv.cpp b/test/test_fenv.cpp index 67a952562..a093eed61 100644 --- a/test/test_fenv.cpp +++ b/test/test_fenv.cpp @@ -69,9 +69,8 @@ void test_constructor_rounding() int main() { - test_environment(); - #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + test_environment(); test_constructor_rounding(); #endif From 51f91c2b75f3a59f539e8d41c049f7bbbe8c03d3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 08:51:46 +0200 Subject: [PATCH 108/967] Remove incorrectly rounded 64-bit addition --- include/boost/decimal/detail/add_impl.hpp | 79 ----------------------- 1 file changed, 79 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 37b913b33..67b033327 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -202,85 +202,6 @@ constexpr auto d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType return ReturnType{new_sig, lhs_exp}; } -template -constexpr auto d64_add_impl(T lhs_sig, U lhs_exp, bool lhs_sign, - T rhs_sig, U rhs_exp, bool rhs_sign, - bool abs_lhs_bigger) noexcept -> ReturnType -{ - using add_type = std::int_fast64_t; - - auto delta_exp {lhs_exp > rhs_exp ? lhs_exp - rhs_exp : rhs_exp - lhs_exp}; - auto signed_sig_lhs {static_cast(detail::make_signed_value(lhs_sig, lhs_sign))}; - auto signed_sig_rhs {static_cast(detail::make_signed_value(rhs_sig, rhs_sign))}; - - #ifdef BOOST_DECIMAL_DEBUG_ADD - std::cerr << "Starting sig lhs: " << lhs_sig - << "\nStarting exp lhs: " << lhs_exp - << "\nStarting sig rhs: " << rhs_sig - << "\nStarting exp rhs: " << rhs_exp << std::endl; - #endif - - if (delta_exp > detail::precision_v + 1) - { - // If the difference in exponents is more than the digits of accuracy - // we return the larger of the two - // - // e.g. 1e20 + 1e-20 = 1e20 - - return abs_lhs_bigger ? ReturnType{lhs_sig, lhs_exp, lhs_sign} : - ReturnType{rhs_sig, rhs_exp, rhs_sign}; - } - - // The two numbers can be added together without special handling - // - // If we can add to the lhs sig rather than dividing we can save some precision - // 32-bit signed int can have 9 digits and our normalized significand has 7 - - auto& sig_bigger {abs_lhs_bigger ? signed_sig_lhs : signed_sig_rhs}; - auto& exp_bigger {abs_lhs_bigger ? lhs_exp : rhs_exp}; - auto& sig_smaller {abs_lhs_bigger ? signed_sig_rhs : signed_sig_lhs}; - auto& sign_smaller {abs_lhs_bigger ? rhs_sign : lhs_sign}; - - if (delta_exp <= 2) - { - sig_bigger *= pow10(static_cast(delta_exp)); - exp_bigger -= delta_exp; - delta_exp = 0; - } - else - { - sig_bigger *= 100; - delta_exp -= 2; - exp_bigger -= 2; - - if (delta_exp > 1) - { - sig_smaller /= pow10(static_cast(delta_exp - 1)); - delta_exp = 1; - } - - if (delta_exp == 1) - { - detail::fenv_round(sig_smaller, sign_smaller); - } - } - - // Cast the results to signed types so that we can apply a sign at the end if necessary - // Both of the significands are maximally 24 bits, so they fit into a 32-bit signed type just fine - const auto new_sig {sig_bigger + sig_smaller}; - const auto new_exp {exp_bigger}; - const auto new_sign {new_sig < 0}; - const auto res_sig {detail::make_positive_unsigned(new_sig)}; - - #ifdef BOOST_DECIMAL_DEBUG_ADD - std::cerr << "Final sig lhs: " << lhs_sig - << "\nFinal sig rhs: " << rhs_sig - << "\nResult sig: " << new_sig << std::endl; - #endif - - return {res_sig, new_exp, new_sign}; -} - #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable: 4127) // If constexpr macro only works for C++17 and above From 78b08ef7253c4b19ca31a176889f54132ccfa898 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 08:51:57 +0200 Subject: [PATCH 109/967] Use only correctly rounded addition impl --- include/boost/decimal/decimal64_t.hpp | 31 ++++++++-------- include/boost/decimal/decimal_fast64_t.hpp | 42 +++++++++++----------- include/boost/decimal/detail/cmath/fma.hpp | 9 +++-- 3 files changed, 38 insertions(+), 44 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 3229d7af1..8ce8288fc 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1159,20 +1159,19 @@ constexpr auto operator+(const decimal64_t lhs, const Integer rhs) noexcept } #endif - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; detail::normalize(sig_lhs, exp_lhs); + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); + return detail::d64_add_impl( + detail::decimal64_t_components{sig_lhs, exp_lhs, lhs.isneg()}, + detail::decimal64_t_components{final_sig_rhs, exp_rhs, (rhs < 0)} + ); } template @@ -1215,20 +1214,19 @@ constexpr auto operator-(const decimal64_t lhs, const Integer rhs) noexcept } #endif - auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; - auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; detail::normalize(sig_lhs, exp_lhs); + auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl(sig_lhs, exp_lhs, lhs.isneg(), - final_sig_rhs, exp_rhs, !(rhs < 0), - abs_lhs_bigger); + return detail::d64_add_impl( + detail::decimal64_t_components{sig_lhs, exp_lhs, lhs.isneg()}, + detail::decimal64_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)} + ); } template @@ -1246,8 +1244,6 @@ constexpr auto operator-(const Integer lhs, const decimal64_t rhs) noexcept #endif auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; - exp_type exp_lhs {0}; detail::normalize(sig_lhs, exp_lhs); const auto final_sig_lhs {static_cast(detail::make_positive_unsigned(sig_lhs))}; @@ -1256,9 +1252,10 @@ constexpr auto operator-(const Integer lhs, const decimal64_t rhs) noexcept auto exp_rhs {rhs.biased_exponent()}; detail::normalize(sig_rhs, exp_rhs); - return detail::d64_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), - sig_rhs, exp_rhs, !rhs.isneg(), - abs_lhs_bigger); + return detail::d64_add_impl( + detail::decimal64_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, + detail::decimal64_t_components{sig_rhs, exp_rhs, !rhs.isneg()} + ); } constexpr auto operator*(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 0c8ec4a5b..3cfe4b520 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -126,6 +126,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto to_dpd_d64(DecimalType val) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint64_t); + template + friend constexpr auto detail::d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + template friend constexpr auto detail::d64_mul_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; @@ -896,10 +899,7 @@ constexpr auto operator+(const decimal_fast64_t lhs, const decimal_fast64_t rhs) } #endif - return detail::d64_add_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), rhs.sign_, - (abs(lhs) > abs(rhs))); + return detail::d64_add_impl(lhs, rhs); } template @@ -917,15 +917,15 @@ constexpr auto operator+(const decimal_fast64_t lhs, const Integer rhs) noexcept #endif auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, (rhs < 0), - abs_lhs_bigger); + return detail::d64_add_impl( + detail::decimal_fast64_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, + detail::decimal_fast64_t_components{final_sig_rhs, exp_rhs, (rhs < 0)} + ); } template @@ -935,7 +935,7 @@ constexpr auto operator+(const Integer lhs, const decimal_fast64_t rhs) noexcept return rhs + lhs; } -constexpr auto operator-(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t +constexpr auto operator-(const decimal_fast64_t lhs, decimal_fast64_t rhs) noexcept -> decimal_fast64_t { #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) @@ -944,11 +944,9 @@ constexpr auto operator-(const decimal_fast64_t lhs, const decimal_fast64_t rhs) } #endif - return detail::d64_add_impl( - lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), !rhs.sign_, - abs(lhs) > abs(rhs) - ); + rhs.sign_ = !rhs.sign_; + + return detail::d64_add_impl(lhs, rhs); } template @@ -966,15 +964,15 @@ constexpr auto operator-(const decimal_fast64_t lhs, const Integer rhs) noexcept #endif auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; - const bool abs_lhs_bigger {abs(lhs) > detail::make_positive_unsigned(rhs)}; exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, - final_sig_rhs, exp_rhs, !(rhs < 0), - abs_lhs_bigger); + return detail::d64_add_impl( + detail::decimal_fast64_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, + detail::decimal_fast64_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)} + ); } template @@ -992,15 +990,15 @@ constexpr auto operator-(const Integer lhs, const decimal_fast64_t rhs) noexcept #endif auto sig_lhs {static_cast(detail::make_positive_unsigned(lhs))}; - const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; exp_type exp_lhs {0}; detail::normalize(sig_lhs, exp_lhs); const auto final_sig_lhs {static_cast(sig_lhs)}; - return detail::d64_add_impl(final_sig_lhs, exp_lhs, (lhs < 0), - rhs.significand_, rhs.biased_exponent(), !rhs.sign_, - abs_lhs_bigger); + return detail::d64_add_impl( + detail::decimal_fast64_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, + detail::decimal_fast64_t_components{rhs.significand_, rhs.biased_exponent(), !rhs.sign_} + ); } constexpr auto operator*(const decimal_fast64_t lhs, const decimal_fast64_t rhs) noexcept -> decimal_fast64_t diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index 22bd14311..f0a186707 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -121,15 +121,14 @@ constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T } #endif - const bool abs_lhs_bigger {abs(complete_lhs) > abs(z)}; - int exp_z {}; auto sig_z = frexp10(z, &exp_z); detail::normalize(first_res.sig, first_res.exp); - return detail::d64_add_impl(first_res.sig, first_res.exp, first_res.sign, - sig_z, static_cast(exp_z), z < 0, - abs_lhs_bigger); + return detail::d64_add_impl( + first_res, + decimal64_t_components{sig_z, static_cast(exp_z), z < 0} + ); } template From 4e6f11d6fbdb07555180febeb25c83afd940f457 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 09:54:30 +0200 Subject: [PATCH 110/967] Add expand significand function --- include/boost/decimal/detail/normalize.hpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/boost/decimal/detail/normalize.hpp b/include/boost/decimal/detail/normalize.hpp index ce3dac979..a6c87cb0e 100644 --- a/include/boost/decimal/detail/normalize.hpp +++ b/include/boost/decimal/detail/normalize.hpp @@ -35,6 +35,19 @@ constexpr auto normalize(T1& significand, T2& exp, bool sign = false) noexcept - } } +// This is a branchless version of the above which is used for implementing basic operations, +// since we know that the values in the decimal type are never larger than target_precision +template +constexpr auto expand_significand(T1& significand, T2& exp) noexcept -> void +{ + constexpr auto target_precision {detail::precision_v}; + const auto digits {num_digits(exp)}; + + const auto zeros_needed {target_precision - digits}; + significand *= pow10(static_cast(zeros_needed)); + exp -= zeros_needed; +} + } //namespace detail } //namespace decimal } //namespace boost From c58e200c7dd6f2db963e1e86607aebd1daa91d26 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 10:28:48 +0200 Subject: [PATCH 111/967] Replace in operations --- include/boost/decimal/decimal64_t.hpp | 12 ++++++------ include/boost/decimal/detail/normalize.hpp | 2 +- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 8ce8288fc..c3442c7df 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1138,9 +1138,9 @@ constexpr auto operator+(const decimal64_t lhs, const decimal64_t rhs) noexcept #endif auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); + detail::expand_significand(lhs_components.sig, lhs_components.exp); auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); + detail::expand_significand(rhs_components.sig, rhs_components.exp); return detail::d64_add_impl(lhs_components, rhs_components); } @@ -1192,9 +1192,9 @@ constexpr auto operator-(const decimal64_t lhs, const decimal64_t rhs) noexcept #endif auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); + detail::expand_significand(lhs_components.sig, lhs_components.exp); auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); + detail::expand_significand(rhs_components.sig, rhs_components.exp); rhs_components.sign = !rhs_components.sign; return detail::d64_add_impl(lhs_components, rhs_components); @@ -1268,9 +1268,9 @@ constexpr auto operator*(const decimal64_t lhs, const decimal64_t rhs) noexcept #endif auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); + detail::expand_significand(lhs_components.sig, lhs_components.exp); auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); + detail::expand_significand(rhs_components.sig, rhs_components.exp); return detail::d64_mul_impl(lhs_components, rhs_components); } diff --git a/include/boost/decimal/detail/normalize.hpp b/include/boost/decimal/detail/normalize.hpp index a6c87cb0e..a2f1f35e7 100644 --- a/include/boost/decimal/detail/normalize.hpp +++ b/include/boost/decimal/detail/normalize.hpp @@ -41,7 +41,7 @@ template constexpr auto expand_significand(T1& significand, T2& exp) noexcept -> void { constexpr auto target_precision {detail::precision_v}; - const auto digits {num_digits(exp)}; + const auto digits {num_digits(significand)}; const auto zeros_needed {target_precision - digits}; significand *= pow10(static_cast(zeros_needed)); From c881abd83766d6673cab0166503da85eff2c4c49 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 10:30:16 +0200 Subject: [PATCH 112/967] Use in mixed type ops --- include/boost/decimal/decimal64_t.hpp | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index c3442c7df..ce8c379da 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1107,7 +1107,7 @@ constexpr auto d64_div_impl(const decimal64_t lhs, const decimal64_t rhs, decima #endif auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); + detail::expand_significand(lhs_components.sig, lhs_components.exp); #ifdef BOOST_DECIMAL_DEBUG std::cerr << "sig lhs: " << sig_lhs @@ -1161,7 +1161,7 @@ constexpr auto operator+(const decimal64_t lhs, const Integer rhs) noexcept auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; exp_type exp_rhs {0}; @@ -1216,7 +1216,7 @@ constexpr auto operator-(const decimal64_t lhs, const Integer rhs) noexcept auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; exp_type exp_rhs {0}; @@ -1250,7 +1250,7 @@ constexpr auto operator-(const Integer lhs, const decimal64_t rhs) noexcept auto sig_rhs {rhs.full_significand()}; auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); + detail::expand_significand(sig_rhs, exp_rhs); return detail::d64_add_impl( detail::decimal64_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, @@ -1291,7 +1291,7 @@ constexpr auto operator*(const decimal64_t lhs, const Integer rhs) noexcept auto lhs_sig {lhs.full_significand()}; auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); + detail::expand_significand(lhs_sig, lhs_exp); auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; exp_type rhs_exp {0}; @@ -1356,7 +1356,7 @@ constexpr auto operator/(const decimal64_t lhs, const Integer rhs) noexcept auto lhs_sig {lhs.full_significand()}; auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); + detail::expand_significand(lhs_sig, lhs_exp); detail::decimal64_t_components lhs_components {lhs_sig, lhs_exp, lhs.isneg()}; auto rhs_sig {static_cast(detail::make_positive_unsigned(rhs))}; @@ -1403,7 +1403,7 @@ constexpr auto operator/(const Integer lhs, const decimal64_t rhs) noexcept auto rhs_sig {rhs.full_significand()}; auto rhs_exp {rhs.biased_exponent()}; - detail::normalize(rhs_sig, rhs_exp); + detail::expand_significand(rhs_sig, rhs_exp); exp_type lhs_exp {}; auto lhs_sig {static_cast(detail::make_positive_unsigned(lhs))}; From b5d66276f3c2a5f932f8cd2079ef27a0bfe7635f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 10:31:45 +0200 Subject: [PATCH 113/967] Use expansion function for decimal32_t --- include/boost/decimal/decimal32_t.hpp | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index ea8ad4e84..38a019e2c 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -799,9 +799,9 @@ constexpr auto operator+(const decimal32_t lhs, const decimal32_t rhs) noexcept #endif auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); + detail::expand_significand(lhs_components.sig, lhs_components.exp); auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); + detail::expand_significand(rhs_components.sig, rhs_components.exp); return detail::d32_add_impl(lhs_components, rhs_components); } @@ -826,7 +826,7 @@ constexpr auto operator+(const decimal32_t lhs, const Integer rhs) noexcept const auto components {lhs.to_components()}; auto sig_lhs {components.sig}; auto exp_lhs {components.exp}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); @@ -890,9 +890,9 @@ constexpr auto operator-(const decimal32_t lhs, const decimal32_t rhs) noexcept #endif auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); + detail::expand_significand(lhs_components.sig, lhs_components.exp); auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); + detail::expand_significand(rhs_components.sig, rhs_components.exp); // a - b = a + (-b) rhs_components.sign = !rhs_components.sign; @@ -918,7 +918,7 @@ constexpr auto operator-(const decimal32_t lhs, const Integer rhs) noexcept const auto components {lhs.to_components()}; auto sig_lhs {components.sig}; auto exp_lhs {components.exp}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); @@ -951,7 +951,7 @@ constexpr auto operator-(const Integer lhs, const decimal32_t rhs) noexcept const auto components {rhs.to_components()}; auto sig_rhs {components.sig}; auto exp_rhs {components.exp}; - detail::normalize(sig_rhs, exp_rhs); + detail::expand_significand(sig_rhs, exp_rhs); return detail::d32_add_impl(detail::decimal32_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, detail::decimal32_t_components{sig_rhs, exp_rhs, !components.sign}); @@ -1584,7 +1584,7 @@ constexpr auto operator*(const decimal32_t lhs, const Integer rhs) noexcept auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); auto sig_rhs {static_cast(detail::make_positive_unsigned(rhs))}; exp_type exp_rhs {0}; @@ -1676,10 +1676,10 @@ constexpr auto div_impl(const decimal32_t lhs, const decimal32_t rhs, decimal32_ #endif auto lhs_components {lhs.to_components()}; - detail::normalize(lhs_components.sig, lhs_components.exp); + detail::expand_significand(lhs_components.sig, lhs_components.exp); auto rhs_components {rhs.to_components()}; - detail::normalize(rhs_components.sig, rhs_components.exp); + detail::expand_significand(rhs_components.sig, rhs_components.exp); #ifdef BOOST_DECIMAL_DEBUG std::cerr << "sig lhs: " << sig_lhs @@ -1747,7 +1747,7 @@ constexpr auto operator/(const decimal32_t lhs, Integer rhs) noexcept auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); detail::decimal32_t_components lhs_components {sig_lhs, exp_lhs, lhs.isneg()}; exp_type exp_rhs {}; @@ -1794,7 +1794,7 @@ constexpr auto operator/(Integer lhs, const decimal32_t rhs) noexcept auto sig_rhs {rhs.full_significand()}; auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); + detail::expand_significand(sig_rhs, exp_rhs); exp_type lhs_exp {}; auto unsigned_lhs {static_cast(detail::make_positive_unsigned(lhs))}; From ee4e3b0c5336a8c75e267fd031f64736a444d6db Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 10:33:31 +0200 Subject: [PATCH 114/967] Use expansion in decimal128_t --- include/boost/decimal/decimal128_t.hpp | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 6e20104dc..b7813d94d 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -1401,11 +1401,11 @@ constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, d auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); auto sig_rhs {rhs.full_significand()}; auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); + detail::expand_significand(sig_rhs, exp_rhs); #ifdef BOOST_DECIMAL_DEBUG std::cerr << "sig lhs: " << sig_lhs @@ -1446,11 +1446,11 @@ constexpr auto operator+(const decimal128_t& lhs, const decimal128_t& rhs) noexc auto lhs_sig {lhs.full_significand()}; auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); + detail::expand_significand(lhs_sig, lhs_exp); auto rhs_sig {rhs.full_significand()}; auto rhs_exp {rhs.biased_exponent()}; - detail::normalize(rhs_sig, rhs_exp); + detail::expand_significand(rhs_sig, rhs_exp); return detail::d128_add_impl(lhs_sig, lhs_exp, lhs.isneg(), rhs_sig, rhs_exp, rhs.isneg(), @@ -1475,7 +1475,7 @@ constexpr auto operator+(const decimal128_t lhs, const Integer rhs) noexcept auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); @@ -1504,11 +1504,11 @@ constexpr auto operator-(const decimal128_t& lhs, const decimal128_t& rhs) noexc auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); auto sig_rhs {rhs.full_significand()}; auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); + detail::expand_significand(sig_rhs, exp_rhs); return detail::d128_sub_impl( sig_lhs, exp_lhs, lhs.isneg(), @@ -1534,7 +1534,7 @@ constexpr auto operator-(const decimal128_t lhs, const Integer rhs) noexcept auto sig_lhs {lhs.full_significand()}; auto exp_lhs {lhs.biased_exponent()}; - detail::normalize(sig_lhs, exp_lhs); + detail::expand_significand(sig_lhs, exp_lhs); exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); @@ -1566,7 +1566,7 @@ constexpr auto operator-(const Integer lhs, const decimal128_t rhs) noexcept auto sig_rhs {rhs.full_significand()}; auto exp_rhs {rhs.biased_exponent()}; - detail::normalize(sig_rhs, exp_rhs); + detail::expand_significand(sig_rhs, exp_rhs); return detail::d128_sub_impl( sig_lhs, exp_lhs, (lhs < 0), @@ -1674,7 +1674,7 @@ constexpr auto operator/(const decimal128_t lhs, const Integer rhs) noexcept auto lhs_sig {lhs.full_significand()}; auto lhs_exp {lhs.biased_exponent()}; - detail::normalize(lhs_sig, lhs_exp); + detail::expand_significand(lhs_sig, lhs_exp); const detail::decimal128_t_components lhs_components {lhs_sig, lhs_exp, lhs.isneg()}; @@ -1718,7 +1718,7 @@ constexpr auto operator/(const Integer lhs, const decimal128_t rhs) noexcept auto rhs_sig {rhs.full_significand()}; auto rhs_exp {rhs.biased_exponent()}; - detail::normalize(rhs_sig, rhs_exp); + detail::expand_significand(rhs_sig, rhs_exp); const detail::decimal128_t_components lhs_components {detail::make_positive_unsigned(lhs), 0, lhs < 0}; const detail::decimal128_t_components rhs_components {rhs_sig, rhs_exp, rhs.isneg()}; From b729fb57e41da8c127b70ed00113de68a83b1c75 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 11:28:18 +0200 Subject: [PATCH 115/967] Remove generic counting impl --- .../decimal/detail/integer_search_trees.hpp | 27 +++++++------------ 1 file changed, 9 insertions(+), 18 deletions(-) diff --git a/include/boost/decimal/detail/integer_search_trees.hpp b/include/boost/decimal/detail/integer_search_trees.hpp index e7f333356..a1430b289 100644 --- a/include/boost/decimal/detail/integer_search_trees.hpp +++ b/include/boost/decimal/detail/integer_search_trees.hpp @@ -24,26 +24,14 @@ namespace decimal { namespace detail { // Generic solution -template -constexpr auto num_digits(T x) noexcept -> int -{ - int digits = 0; - - while (x) - { - x /= 10U; - ++digits; - } - - return digits; -} - -template <> -constexpr auto num_digits(std::uint32_t x) noexcept -> int +template ::digits10 <= std::numeric_limits::digits10, bool> = true> +constexpr auto num_digits(T init_x) noexcept -> int { // Use the most significant bit position to approximate log10 // log10(x) ~= log2(x) / log2(10) ~= log2(x) / 3.32 + const auto x {static_cast(init_x)}; + const auto msb {32 - int128::detail::impl::countl_impl(x)}; // Approximate log10 @@ -62,12 +50,15 @@ constexpr auto num_digits(std::uint32_t x) noexcept -> int return estimated_digits; } -template <> -constexpr auto num_digits(std::uint64_t x) noexcept -> int +template ::digits10 <= std::numeric_limits::digits10) && + (std::numeric_limits::digits10 > std::numeric_limits::digits10), bool> = true> +constexpr auto num_digits(T init_x) noexcept -> int { // Use the most significant bit position to approximate log10 // log10(x) ~= log2(x) / log2(10) ~= log2(x) / 3.32 + const auto x {static_cast(init_x)}; + const auto msb {63 - int128::detail::impl::countl_impl(x)}; // Approximate log10 From f45e97a1232f611b8c735d0be7c864acd55f238d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 11:28:30 +0200 Subject: [PATCH 116/967] Only return unsigned types --- include/boost/decimal/detail/add_impl.hpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 67b033327..d812cbcb7 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -108,8 +108,9 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType const auto signed_rhs {detail::make_signed_value(static_cast(big_rhs), rhs.isneg())}; const auto new_sig {signed_lhs + signed_rhs}; + const auto return_sig {detail::make_positive_unsigned(new_sig)}; - return ReturnType{new_sig, lhs_exp}; + return ReturnType{return_sig, lhs_exp, new_sig < 0}; } #ifdef _MSC_VER @@ -198,8 +199,9 @@ constexpr auto d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType const auto signed_rhs {detail::make_signed_value(static_cast(big_rhs), rhs.isneg())}; const auto new_sig {signed_lhs + signed_rhs}; + const auto return_sig {detail::make_positive_unsigned(new_sig)}; - return ReturnType{new_sig, lhs_exp}; + return ReturnType{return_sig, lhs_exp, new_sig < 0}; } #ifdef _MSC_VER From 768a971179bd3f45541ff0030a1d57314c17699d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 12:48:49 +0200 Subject: [PATCH 117/967] Add decimal values for the components structs --- include/boost/decimal/detail/promotion.hpp | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/boost/decimal/detail/promotion.hpp b/include/boost/decimal/detail/promotion.hpp index dc60110b9..139d1226e 100644 --- a/include/boost/decimal/detail/promotion.hpp +++ b/include/boost/decimal/detail/promotion.hpp @@ -7,6 +7,7 @@ #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -33,6 +34,12 @@ struct decimal_val static constexpr int value = 32; }; +template <> +struct decimal_val +{ + static constexpr int value = 32; +}; + // Assign a higher value to the fast type for consistency of promotion // Side effect is the same calculation will be faster with the same precision template <> @@ -47,6 +54,12 @@ struct decimal_val static constexpr int value = 64; }; +template <> +struct decimal_val +{ + static constexpr int value = 64; +}; + template <> struct decimal_val { @@ -59,6 +72,12 @@ struct decimal_val static constexpr int value = 128; }; +template <> +struct decimal_val +{ + static constexpr int value = 128; +}; + template <> struct decimal_val { From 404ff76de3fa8eb1e2b93b1f4ecd91b676e3c874 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 12:48:56 +0200 Subject: [PATCH 118/967] Reduce namespace pollution --- include/boost/decimal/detail/promotion.hpp | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/promotion.hpp b/include/boost/decimal/detail/promotion.hpp index 139d1226e..e9e658b3e 100644 --- a/include/boost/decimal/detail/promotion.hpp +++ b/include/boost/decimal/detail/promotion.hpp @@ -119,8 +119,6 @@ struct promote_2_args template using promote_2_args_t = typename promote_2_args::type; -} //namespace impl - // Promote N args using the rules of promote_2_args template struct promote_args; @@ -128,17 +126,19 @@ struct promote_args; template struct promote_args { - using type = impl::promote_arg_t; + using type = promote_arg_t; }; template struct promote_args { - using type = impl::promote_2_args_t, typename promote_args::type>; + using type = promote_2_args_t, typename promote_args::type>; }; +} //namespace impl + template -using promote_args_t = typename promote_args::type; +using promote_args_t = typename impl::promote_args::type; #if BOOST_DECIMAL_DEC_EVAL_METHOD == 0 From d247c7dec073b93c5e7e6e02a4a434e4eb938386 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 12:55:32 +0200 Subject: [PATCH 119/967] Craft unified addition impl --- include/boost/decimal/detail/add_impl.hpp | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index d812cbcb7..7a91e2c49 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -10,6 +10,7 @@ #include #include #include +#include #include "int128.hpp" #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -31,8 +32,8 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType // Each of the significands is maximally 23 bits. // Rather than doing division to get proper alignment we will promote to 64 bits // And do a single mul followed by an add - using add_type = std::int_fast64_t; - using promoted_sig_type = std::uint_fast64_t; + using add_type = std::conditional_t < 64, std::int_fast64_t, int128::int128_t>; + using promoted_sig_type = std::conditional_t < 64, std::uint_fast64_t, int128::uint128_t>; promoted_sig_type big_lhs {lhs.full_significand()}; promoted_sig_type big_rhs {rhs.full_significand()}; @@ -42,7 +43,7 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType // Align to larger exponent if (lhs_exp != rhs_exp) { - constexpr auto max_shift {detail::make_positive_unsigned(std::numeric_limits::digits10 - detail::precision_v - 1)}; + constexpr auto max_shift {detail::make_positive_unsigned(std::numeric_limits::digits10 - detail::precision_v - 1)}; const auto shift {detail::make_positive_unsigned(lhs_exp - rhs_exp)}; if (shift > max_shift) @@ -94,12 +95,12 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType if (lhs_exp < rhs_exp) { big_rhs *= detail::pow10(shift); - lhs_exp = rhs_exp - static_cast(shift); + lhs_exp = rhs_exp - static_cast(shift); } else { big_lhs *= detail::pow10(shift); - lhs_exp -= static_cast(shift); + lhs_exp -= static_cast(shift); } } From 2c3d209a57d5b1d9d5cdb1115c3ece66e40719db Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 13:10:35 +0200 Subject: [PATCH 120/967] In constexpr code paths still use the global rounding mode --- include/boost/decimal/detail/add_impl.hpp | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 7a91e2c49..087d285ef 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -48,21 +48,17 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType if (shift > max_shift) { - #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION - - return big_lhs != 0U && (lhs_exp > rhs_exp) ? - ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : - ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; - - #else + auto round {_boost_decimal_global_rounding_mode}; - auto round {rounding_mode::fe_dec_default}; + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(lhs)) { round = fegetround(); } + #endif + if (BOOST_DECIMAL_LIKELY(round != rounding_mode::fe_dec_downward && round != rounding_mode::fe_dec_upward)) { return big_lhs != 0U && (lhs_exp > rhs_exp) ? @@ -88,8 +84,6 @@ constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType ReturnType{lhs.full_significand() + 1U, lhs.biased_exponent(), lhs.isneg()} : ReturnType{rhs.full_significand() + 1U, rhs.biased_exponent(), rhs.isneg()}; } - - #endif // BOOST_DECIMAL_NO_CONSTEVAL_DETECTION } if (lhs_exp < rhs_exp) From d26a0e04b2686fd8ff7a62404d8009e1e7671c5b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 13:27:54 +0200 Subject: [PATCH 121/967] Use only newly named add_impl --- include/boost/decimal/decimal32_t.hpp | 22 ++++++++++++------- include/boost/decimal/decimal_fast32_t.hpp | 25 ++++++++++++---------- include/boost/decimal/detail/add_impl.hpp | 2 +- include/boost/decimal/detail/cmath/fma.hpp | 6 ++++-- 4 files changed, 33 insertions(+), 22 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 38a019e2c..846e85019 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -803,7 +803,7 @@ constexpr auto operator+(const decimal32_t lhs, const decimal32_t rhs) noexcept auto rhs_components {rhs.to_components()}; detail::expand_significand(rhs_components.sig, rhs_components.exp); - return detail::d32_add_impl(lhs_components, rhs_components); + return detail::add_impl(lhs_components, rhs_components); } template @@ -834,8 +834,10 @@ constexpr auto operator+(const decimal32_t lhs, const Integer rhs) noexcept // Now that the rhs has been normalized, it is guaranteed to fit into the decimal32_t significand type const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - return detail::d32_add_impl(detail::decimal32_t_components{sig_lhs, exp_lhs, components.sign}, - detail::decimal32_t_components{final_sig_rhs, exp_rhs, (rhs < 0)}); + return detail::add_impl( + detail::decimal32_t_components{sig_lhs, exp_lhs, components.sign}, + detail::decimal32_t_components{final_sig_rhs, exp_rhs, (rhs < 0)} + ); } template @@ -896,7 +898,7 @@ constexpr auto operator-(const decimal32_t lhs, const decimal32_t rhs) noexcept // a - b = a + (-b) rhs_components.sign = !rhs_components.sign; - return detail::d32_add_impl(lhs_components, rhs_components); + return detail::add_impl(lhs_components, rhs_components); } template @@ -924,8 +926,10 @@ constexpr auto operator-(const decimal32_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d32_add_impl(detail::decimal32_t_components{sig_lhs, exp_lhs, components.sign}, - detail::decimal32_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)}); + return detail::add_impl( + detail::decimal32_t_components{sig_lhs, exp_lhs, components.sign}, + detail::decimal32_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)} + ); } template @@ -953,8 +957,10 @@ constexpr auto operator-(const Integer lhs, const decimal32_t rhs) noexcept auto exp_rhs {components.exp}; detail::expand_significand(sig_rhs, exp_rhs); - return detail::d32_add_impl(detail::decimal32_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, - detail::decimal32_t_components{sig_rhs, exp_rhs, !components.sign}); + return detail::add_impl( + detail::decimal32_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, + detail::decimal32_t_components{sig_rhs, exp_rhs, !components.sign} + ); } constexpr auto decimal32_t::operator--() noexcept -> decimal32_t& diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index b814233eb..b15ce4a77 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -119,7 +119,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint32_t); template - friend constexpr auto detail::d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + friend constexpr auto detail::add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; template BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; @@ -773,7 +773,7 @@ constexpr auto operator+(const decimal_fast32_t lhs, const decimal_fast32_t rhs) } #endif - return detail::d32_add_impl(lhs, rhs); + return detail::add_impl(lhs, rhs); } template @@ -796,8 +796,10 @@ constexpr auto operator+(const decimal_fast32_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - return detail::d32_add_impl(detail::decimal_fast32_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, - detail::decimal_fast32_t_components{final_sig_rhs, exp_rhs, (rhs < 0)}); + return detail::add_impl( + detail::decimal_fast32_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, + detail::decimal_fast32_t_components{final_sig_rhs, exp_rhs, (rhs < 0)} + ); } template @@ -818,7 +820,7 @@ constexpr auto operator-(const decimal_fast32_t lhs, decimal_fast32_t rhs) noexc rhs.sign_ = !rhs.sign_; - return detail::d32_add_impl(lhs, rhs); + return detail::add_impl(lhs, rhs); } template @@ -841,9 +843,10 @@ constexpr auto operator-(const decimal_fast32_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); auto final_sig_rhs {static_cast(detail::make_positive_unsigned(sig_rhs))}; - return detail::d32_add_impl( - detail::decimal_fast32_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, - detail::decimal_fast32_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)}); + return detail::add_impl( + detail::decimal_fast32_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, + detail::decimal_fast32_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)} + ); } template @@ -866,9 +869,9 @@ constexpr auto operator-(const Integer lhs, const decimal_fast32_t rhs) noexcept detail::normalize(sig_lhs, exp_lhs); auto final_sig_lhs {static_cast(detail::make_positive_unsigned(sig_lhs))}; - return detail::d32_add_impl( - detail::decimal_fast32_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, - detail::decimal_fast32_t_components{rhs.significand_, rhs.biased_exponent(), !rhs.sign_} + return detail::add_impl( + detail::decimal_fast32_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, + detail::decimal_fast32_t_components{rhs.significand_, rhs.biased_exponent(), !rhs.sign_} ); } diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 087d285ef..72703307c 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -27,7 +27,7 @@ namespace detail { #endif template -constexpr auto d32_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType +constexpr auto add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType { // Each of the significands is maximally 23 bits. // Rather than doing division to get proper alignment we will promote to 64 bits diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index f0a186707..817d9d406 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -76,8 +76,10 @@ constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T auto sig_z = frexp10(z, &exp_z); detail::normalize(first_res.sig, first_res.exp); - return detail::d32_add_impl(T_components_type{first_res.sig, first_res.exp, first_res.sign}, - T_components_type{sig_z, static_cast(exp_z), z < 0}); + return detail::add_impl( + T_components_type{first_res.sig, first_res.exp, first_res.sign}, + T_components_type{sig_z, static_cast(exp_z), z < 0} + ); } template From dd4a1203433c85a01b4b43884878f4cc48332c14 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 13:34:10 +0200 Subject: [PATCH 122/967] Use new impl with 64-bit types --- include/boost/decimal/decimal64_t.hpp | 10 +++++----- include/boost/decimal/decimal_fast64_t.hpp | 12 ++++++------ include/boost/decimal/detail/cmath/fma.hpp | 2 +- 3 files changed, 12 insertions(+), 12 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index ce8c379da..3624524ca 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1142,7 +1142,7 @@ constexpr auto operator+(const decimal64_t lhs, const decimal64_t rhs) noexcept auto rhs_components {rhs.to_components()}; detail::expand_significand(rhs_components.sig, rhs_components.exp); - return detail::d64_add_impl(lhs_components, rhs_components); + return detail::add_impl(lhs_components, rhs_components); } template @@ -1168,7 +1168,7 @@ constexpr auto operator+(const decimal64_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl( + return detail::add_impl( detail::decimal64_t_components{sig_lhs, exp_lhs, lhs.isneg()}, detail::decimal64_t_components{final_sig_rhs, exp_rhs, (rhs < 0)} ); @@ -1197,7 +1197,7 @@ constexpr auto operator-(const decimal64_t lhs, const decimal64_t rhs) noexcept detail::expand_significand(rhs_components.sig, rhs_components.exp); rhs_components.sign = !rhs_components.sign; - return detail::d64_add_impl(lhs_components, rhs_components); + return detail::add_impl(lhs_components, rhs_components); } template @@ -1223,7 +1223,7 @@ constexpr auto operator-(const decimal64_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl( + return detail::add_impl( detail::decimal64_t_components{sig_lhs, exp_lhs, lhs.isneg()}, detail::decimal64_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)} ); @@ -1252,7 +1252,7 @@ constexpr auto operator-(const Integer lhs, const decimal64_t rhs) noexcept auto exp_rhs {rhs.biased_exponent()}; detail::expand_significand(sig_rhs, exp_rhs); - return detail::d64_add_impl( + return detail::add_impl( detail::decimal64_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, detail::decimal64_t_components{sig_rhs, exp_rhs, !rhs.isneg()} ); diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 3cfe4b520..27c6261b6 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -127,7 +127,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::uint64_t); template - friend constexpr auto detail::d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + friend constexpr auto detail::add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; template friend constexpr auto detail::d64_mul_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; @@ -899,7 +899,7 @@ constexpr auto operator+(const decimal_fast64_t lhs, const decimal_fast64_t rhs) } #endif - return detail::d64_add_impl(lhs, rhs); + return detail::add_impl(lhs, rhs); } template @@ -922,7 +922,7 @@ constexpr auto operator+(const decimal_fast64_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl( + return detail::add_impl( detail::decimal_fast64_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, detail::decimal_fast64_t_components{final_sig_rhs, exp_rhs, (rhs < 0)} ); @@ -946,7 +946,7 @@ constexpr auto operator-(const decimal_fast64_t lhs, decimal_fast64_t rhs) noexc rhs.sign_ = !rhs.sign_; - return detail::d64_add_impl(lhs, rhs); + return detail::add_impl(lhs, rhs); } template @@ -969,7 +969,7 @@ constexpr auto operator-(const decimal_fast64_t lhs, const Integer rhs) noexcept detail::normalize(sig_rhs, exp_rhs); const auto final_sig_rhs {static_cast(sig_rhs)}; - return detail::d64_add_impl( + return detail::add_impl( detail::decimal_fast64_t_components{lhs.significand_, lhs.biased_exponent(), lhs.sign_}, detail::decimal_fast64_t_components{final_sig_rhs, exp_rhs, !(rhs < 0)} ); @@ -995,7 +995,7 @@ constexpr auto operator-(const Integer lhs, const decimal_fast64_t rhs) noexcept detail::normalize(sig_lhs, exp_lhs); const auto final_sig_lhs {static_cast(sig_lhs)}; - return detail::d64_add_impl( + return detail::add_impl( detail::decimal_fast64_t_components{final_sig_lhs, exp_lhs, (lhs < 0)}, detail::decimal_fast64_t_components{rhs.significand_, rhs.biased_exponent(), !rhs.sign_} ); diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index 817d9d406..65f07ca44 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -127,7 +127,7 @@ constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T auto sig_z = frexp10(z, &exp_z); detail::normalize(first_res.sig, first_res.exp); - return detail::d64_add_impl( + return detail::add_impl( first_res, decimal64_t_components{sig_z, static_cast(exp_z), z < 0} ); From 4d6827a062daf144e59dc08a79d96f8ad61a0c4d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 13:34:22 +0200 Subject: [PATCH 123/967] Remove now unused 64-bit addition impl --- include/boost/decimal/detail/add_impl.hpp | 96 ----------------------- 1 file changed, 96 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 72703307c..e2276364a 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -108,102 +108,6 @@ constexpr auto add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType return ReturnType{return_sig, lhs_exp, new_sig < 0}; } -#ifdef _MSC_VER -# pragma warning(pop) -#endif - -template -constexpr auto d64_add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType -{ - // Each of the significands is maximally 23 bits. - // Rather than doing division to get proper alignment we will promote to 64 bits - // And do a single mul followed by an add - using add_type = boost::int128::int128_t; - using promoted_sig_type = boost::int128::uint128_t; - - promoted_sig_type big_lhs {lhs.full_significand()}; - promoted_sig_type big_rhs {rhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - const auto rhs_exp {rhs.biased_exponent()}; - - // Align to larger exponent - if (lhs_exp != rhs_exp) - { - constexpr auto max_shift {detail::make_positive_unsigned(detail::precision_v + 1)}; - const auto shift {detail::make_positive_unsigned(lhs_exp - rhs_exp)}; - - if (shift > max_shift) - { - #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION - - return big_lhs != 0U && (lhs_exp > rhs_exp) ? - ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : - ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; - - #else - - auto round {rounding_mode::fe_dec_default}; - - if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(lhs)) - { - round = fegetround(); - } - - if (BOOST_DECIMAL_LIKELY(round != rounding_mode::fe_dec_downward && round != rounding_mode::fe_dec_upward)) - { - return big_lhs != 0U && (lhs_exp > rhs_exp) ? - ReturnType{lhs.full_significand(), lhs.biased_exponent(), lhs.isneg()} : - ReturnType{rhs.full_significand(), rhs.biased_exponent(), rhs.isneg()}; - } - else if (round == rounding_mode::fe_dec_downward) - { - // If we are subtracting even disparate numbers we need to round down - - using sig_type = typename T::significand_type; - - return big_lhs != 0U && (lhs_exp > rhs_exp) ? - ReturnType{lhs.full_significand() - static_cast(lhs.isneg() != rhs.isneg()), lhs.biased_exponent(), lhs.isneg()} : - ReturnType{rhs.full_significand() - static_cast(lhs.isneg() != rhs.isneg()), rhs.biased_exponent(), rhs.isneg()}; - } - else - { - // rounding mode == fe_dec_upward - - return big_lhs != 0U && (lhs_exp > rhs_exp) ? - ReturnType{lhs.full_significand() + 1U, lhs.biased_exponent(), lhs.isneg()} : - ReturnType{rhs.full_significand() + 1U, rhs.biased_exponent(), rhs.isneg()}; - } - - #endif // BOOST_DECIMAL_NO_CONSTEVAL_DETECTION - } - - if (lhs_exp < rhs_exp) - { - big_rhs *= detail::pow10(shift); - lhs_exp = rhs_exp - static_cast(shift); - } - else - { - big_lhs *= detail::pow10(shift); - lhs_exp -= static_cast(shift); - } - } - - // Perform signed addition with overflow protection - const auto signed_lhs {detail::make_signed_value(static_cast(big_lhs), lhs.isneg())}; - const auto signed_rhs {detail::make_signed_value(static_cast(big_rhs), rhs.isneg())}; - - const auto new_sig {signed_lhs + signed_rhs}; - const auto return_sig {detail::make_positive_unsigned(new_sig)}; - - return ReturnType{return_sig, lhs_exp, new_sig < 0}; -} - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable: 4127) // If constexpr macro only works for C++17 and above -#endif - template constexpr auto d128_add_impl(T1 lhs_sig, U1 lhs_exp, bool lhs_sign, From d16ef2587876fea3c2a22cda6defc4d61661847b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 13:40:06 +0200 Subject: [PATCH 124/967] Remove unused 128-bit impl --- include/boost/decimal/detail/add_impl.hpp | 83 ----------------------- 1 file changed, 83 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index e2276364a..7f841fdc0 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -108,89 +108,6 @@ constexpr auto add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType return ReturnType{return_sig, lhs_exp, new_sig < 0}; } -template -constexpr auto d128_add_impl(T1 lhs_sig, U1 lhs_exp, bool lhs_sign, - T2 rhs_sig, U2 rhs_exp, bool rhs_sign) noexcept -> ReturnType -{ - const bool sign {lhs_sign}; - - auto delta_exp {lhs_exp > rhs_exp ? lhs_exp - rhs_exp : rhs_exp - lhs_exp}; - - if (delta_exp > detail::precision_v + 1) - { - // If the difference in exponents is more than the digits of accuracy - // we return the larger of the two - // - // e.g. 1e20 + 1e-20 = 1e20 - - return {lhs_sig, lhs_exp, lhs_sign}; - } - - if (delta_exp == detail::precision_v + 1) - { - // Only need to see if we need to add one to the - // significand of the bigger value - // - // e.g. 1.234567e5 + 9.876543e-2 = 1.234568e5 - - BOOST_DECIMAL_IF_CONSTEXPR (std::numeric_limits::digits10 > std::numeric_limits::digits10) - { - constexpr boost::int128::uint128_t max_value {UINT64_C(0xF684DF56C3E0), UINT64_C(0x1BC6C73200000000)}; - if (rhs_sig >= max_value) - { - ++lhs_sig; - } - - return {lhs_sig, lhs_exp, lhs_sign}; - } - else - { - return {lhs_sig, lhs_exp, lhs_sign}; - } - } - - // The two numbers can be added together without special handling - // - // If we can add to the lhs sig rather than dividing we can save some precision - // 64-bit sign int can have 19 digits, and our normalized significand has 16 - - if (delta_exp <= 3) - { - lhs_sig *= detail::pow10(static_cast(delta_exp)); - lhs_exp -= delta_exp; - } - else - { - lhs_sig *= 1000U; - delta_exp -= 3; - lhs_exp -= 3; - - if (delta_exp > 1) - { - rhs_sig /= pow10(static_cast(delta_exp - 1)); - delta_exp = 1; - } - - if (delta_exp == 1) - { - detail::fenv_round(rhs_sig, rhs_sign); - } - } - - const auto new_sig {static_cast(lhs_sig) + - static_cast(rhs_sig)}; - const auto new_exp {lhs_exp}; - - #ifdef BOOST_DECIMAL_DEBUG_ADD_128 - std::cerr << "Res Sig: " << static_cast(new_sig) - << "\nRes Exp: " << new_exp - << "\nRes Neg: " << sign << std::endl; - #endif - - return {new_sig, new_exp, sign}; -} - template constexpr auto d128_add_impl(T lhs_sig, U lhs_exp, bool lhs_sign, T rhs_sig, U rhs_exp, bool rhs_sign, From 95b7f55d81e431edb35ee0994fd67d58b4c1856d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 11 Sep 2025 14:12:09 +0200 Subject: [PATCH 125/967] Implement proper rounding mode --- include/boost/decimal/detail/add_impl.hpp | 36 +++++++++++++++++++++-- 1 file changed, 34 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 7f841fdc0..e6d4cfd83 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -129,8 +129,40 @@ constexpr auto d128_add_impl(T lhs_sig, U lhs_exp, bool lhs_sign, // // e.g. 1e20 + 1e-20 = 1e20 - return abs_lhs_bigger ? ReturnType{lhs_sig, lhs_exp, lhs_sign} : - ReturnType{rhs_sig, rhs_exp, rhs_sign}; + auto round {_boost_decimal_global_rounding_mode}; + + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(lhs)) + { + round = fegetround(); + } + + #endif + + if (BOOST_DECIMAL_LIKELY(round != rounding_mode::fe_dec_downward && round != rounding_mode::fe_dec_upward)) + { + return lhs_sig != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs_sig, lhs_exp, lhs_sign} : + ReturnType{rhs_sig, rhs_exp, rhs_sign}; + } + else if (round == rounding_mode::fe_dec_downward) + { + // If we are subtracting even disparate numbers we need to round down + // E.g. "5e+95"_DF - "4e-100"_DF == "4.999999e+95"_DF + + return lhs_sig != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs_sig - static_cast(lhs_sign != rhs_sign), lhs_exp, lhs_sign} : + ReturnType{rhs_sig - static_cast(lhs_sign != rhs_sign), rhs_exp, rhs_sign}; + } + else + { + // rounding mode == fe_dec_upward + // Unconditionally round up. Could be 5e+95 + 4e-100 -> 5.000001e+95 + return lhs_sig != 0U && (lhs_exp > rhs_exp) ? + ReturnType{lhs_sig + 1U, lhs_exp, lhs_sign} : + ReturnType{rhs_sig + 1U, rhs_exp, rhs_sign}; + } } // The two numbers can be added together without special handling From 4c211469159a978019d99d27fe28045744ef063e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 08:08:17 +0200 Subject: [PATCH 126/967] Fix test for return code on parsing inf --- test/test_from_chars.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_from_chars.cpp b/test/test_from_chars.cpp index 82fa694ac..7ad0c7fa6 100644 --- a/test/test_from_chars.cpp +++ b/test/test_from_chars.cpp @@ -177,7 +177,7 @@ void test_non_finite_values() const char* inf_str = "inf"; val = 0; r = from_chars(inf_str, inf_str + std::strlen(inf_str), val); - BOOST_TEST(r.ec == std::errc::result_out_of_range); + BOOST_TEST(r); BOOST_TEST(isinf(val)); } From a2e523d1fd331f189643651b64c8b7d06c5bc61a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 08:08:24 +0200 Subject: [PATCH 127/967] Fix r.ec for inf --- include/boost/decimal/charconv.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 9a49b94e3..2711cd459 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -82,7 +82,7 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ else if (r.ec == std::errc::value_too_large) { value = std::numeric_limits::infinity(); - r.ec = std::errc::result_out_of_range; + r.ec = std::errc(); } else { From c8019b55faa2866a6505438432508892acd50434 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 08:20:02 +0200 Subject: [PATCH 128/967] Add tests for streaming value with leading plus sign --- test/test_decimal32_fast_stream.cpp | 2 +- test/test_decimal32_stream.cpp | 2 +- test/test_decimal64_fast_stream.cpp | 2 +- test/test_decimal64_stream.cpp | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/test/test_decimal32_fast_stream.cpp b/test/test_decimal32_fast_stream.cpp index 416477c25..1daad7a59 100644 --- a/test/test_decimal32_fast_stream.cpp +++ b/test/test_decimal32_fast_stream.cpp @@ -15,7 +15,7 @@ void test_istream() { decimal_fast32_t val; std::stringstream in; - in.str("1.234567e+06"); + in.str("+1.234567e+06"); in >> val; BOOST_TEST_EQ(val, decimal_fast32_t(1234567, 0)); diff --git a/test/test_decimal32_stream.cpp b/test/test_decimal32_stream.cpp index 1027829ba..bdd2c5f44 100644 --- a/test/test_decimal32_stream.cpp +++ b/test/test_decimal32_stream.cpp @@ -15,7 +15,7 @@ void test_istream() { decimal32_t val; std::stringstream in; - in.str("1.234567e+06"); + in.str("+1.234567e+06"); in >> val; BOOST_TEST_EQ(val, decimal32_t(1234567, 0)); diff --git a/test/test_decimal64_fast_stream.cpp b/test/test_decimal64_fast_stream.cpp index 3ca8d8173..f512f91fc 100644 --- a/test/test_decimal64_fast_stream.cpp +++ b/test/test_decimal64_fast_stream.cpp @@ -16,7 +16,7 @@ void test_istream() { decimal_fast64_t val; std::stringstream in; - in.str("1.234567e+06"); + in.str("+1.234567e+06"); in >> val; BOOST_TEST_EQ(val, decimal_fast64_t(1234567, 0)); diff --git a/test/test_decimal64_stream.cpp b/test/test_decimal64_stream.cpp index 8b04042a4..08d549036 100644 --- a/test/test_decimal64_stream.cpp +++ b/test/test_decimal64_stream.cpp @@ -16,7 +16,7 @@ void test_istream() { decimal64_t val; std::stringstream in; - in.str("1.234567e+06"); + in.str("+1.234567e+06"); in >> val; BOOST_TEST_EQ(val, decimal64_t(1234567, 0)); From d08afbac5c0acb75956fba054eae6374d3bdd314 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 08:20:18 +0200 Subject: [PATCH 129/967] Remove leading plus sign from value before call to from_chars --- include/boost/decimal/detail/io.hpp | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index 5d12d84ca..99a40a877 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -74,7 +74,15 @@ auto operator>>(std::basic_istream& is, DecimalType& d) fmt = chars_format::fixed; } - auto r = from_chars(buffer, buffer + std::strlen(buffer), d, fmt); + auto first {buffer}; + if (*first == '+') + { + // Having a leading + sign is legal in iostream, but not allowed with charconv + // Pre-processing this case away helps support for both + ++first; + } + + auto r = from_chars(first, buffer + std::strlen(buffer), d, fmt); if (BOOST_DECIMAL_UNLIKELY(r.ec == std::errc::not_supported)) { From 8dd672c92359788d9e72137ebfd6a3469455b532 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 08:30:35 +0200 Subject: [PATCH 130/967] Add test set from issue 1058 --- test/test_literals.cpp | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/test/test_literals.cpp b/test/test_literals.cpp index 15f5ca22a..902cfdad5 100644 --- a/test/test_literals.cpp +++ b/test/test_literals.cpp @@ -120,6 +120,18 @@ void test_decimal_fast128_t_literals() BOOST_TEST_EQ(decimal_fast128_t(3, 1), 3e1_dlf); } +// https://github.com/cppalliance/decimal/issues/1058 +void construct_negative_infinity() +{ + using namespace boost::decimal::literals; + BOOST_TEST_EQ("-inf"_DF, -"inf"_DF); + BOOST_TEST_EQ("-inf"_DD, -"inf"_DD); + BOOST_TEST_EQ("-inf"_DL, -"inf"_DL); + BOOST_TEST_EQ("-inf"_DFF, -"inf"_DFF); + BOOST_TEST_EQ("-inf"_DDF, -"inf"_DDF); + BOOST_TEST_EQ("-inf"_DLF, -"inf"_DLF); +} + int main() { test_decimal32_t_literals(); @@ -130,5 +142,7 @@ int main() test_decimal_fast64_t_literals(); test_decimal_fast128_t_literals(); + construct_negative_infinity(); + return boost::report_errors(); } From f69922b8abef2a3a52102d7702c0f696c86af76d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 08:40:41 +0200 Subject: [PATCH 131/967] Fix sign handling --- include/boost/decimal/charconv.hpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 2711cd459..520c463c9 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -81,7 +81,8 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ } else if (r.ec == std::errc::value_too_large) { - value = std::numeric_limits::infinity(); + value = sign ? -std::numeric_limits::infinity() : + std::numeric_limits::infinity(); r.ec = std::errc(); } else From 7344f1f1ab02e184c3a1573f2043236d60fd9b01 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 09:50:20 +0200 Subject: [PATCH 132/967] Add expanded reproducer test set --- test/Jamfile | 1 + test/github_issue_1057.cpp | 60 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+) create mode 100644 test/github_issue_1057.cpp diff --git a/test/Jamfile b/test/Jamfile index 15caa50a6..5cedaf1f4 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -64,6 +64,7 @@ run github_issue_911.cpp ; run github_issue_988.cpp ; run github_issue_1026.cpp ; run github_issue_1035.cpp ; +run github_issue_1057.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; run random_decimal32_comp.cpp ; diff --git a/test/github_issue_1057.cpp b/test/github_issue_1057.cpp new file mode 100644 index 000000000..0835049ba --- /dev/null +++ b/test/github_issue_1057.cpp @@ -0,0 +1,60 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1057 + +#include +#include + +template +void convert_leading_plus_by_strtod() +{ + DecimalType x = boost::decimal::strtod("+0.1", nullptr); + BOOST_TEST_EQ(x, DecimalType(1, -1)); +} + +template +void convert_leading_space_by_strtod() +{ + DecimalType x = boost::decimal::strtod(" \t 0.1", nullptr); + BOOST_TEST_EQ(x, DecimalType(1, -1)); +} + +template +void test_both() +{ + DecimalType x = boost::decimal::strtod(" \n \t +0.1", nullptr); + BOOST_TEST_EQ(x, DecimalType(1, -1)); + + x = boost::decimal::strtod(" \n \t -0.2", nullptr); + BOOST_TEST_EQ(x, -DecimalType(2, -1)); +} + +int main() +{ + using namespace boost::decimal; + + convert_leading_plus_by_strtod(); + convert_leading_plus_by_strtod(); + convert_leading_plus_by_strtod(); + convert_leading_plus_by_strtod(); + convert_leading_plus_by_strtod(); + convert_leading_plus_by_strtod(); + + convert_leading_space_by_strtod(); + convert_leading_space_by_strtod(); + convert_leading_space_by_strtod(); + convert_leading_space_by_strtod(); + convert_leading_space_by_strtod(); + convert_leading_space_by_strtod(); + + test_both(); + test_both(); + test_both(); + test_both(); + test_both(); + test_both(); + + return boost::report_errors(); +} From 3e786a5f2bd1d896bab0b4a7e6733e9e06c148e8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 09:51:18 +0200 Subject: [PATCH 133/967] Add parsing of characters that are allowed here, but not in charconv --- include/boost/decimal/cstdlib.hpp | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/cstdlib.hpp b/include/boost/decimal/cstdlib.hpp index dc4003a52..2380be653 100644 --- a/include/boost/decimal/cstdlib.hpp +++ b/include/boost/decimal/cstdlib.hpp @@ -44,11 +44,26 @@ inline auto strtod_calculation(const char* str, char** endptr, char* buffer, con std::memcpy(buffer, str, str_length); convert_string_to_c_locale(buffer); + // Strtod allows leading whitespace characters + auto first {buffer}; + std::size_t first_pos {0}; + while (first_pos < str_length && *first <= static_cast(32)) + { + ++first; + ++first_pos; + } + + // The plus sign is also allowed before the value + if (first_pos < str_length && *first == '+') + { + ++first; + } + bool sign {}; significand_type significand {}; std::int32_t expval {}; - const auto r {detail::parser(buffer, buffer + str_length, sign, significand, expval)}; + const auto r {detail::parser(first, buffer + str_length, sign, significand, expval)}; TargetDecimalType d {}; if (r.ec != std::errc{}) From a0cec01bd04856e2491e44bd76a42ecc7e154ec8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 09:54:09 +0200 Subject: [PATCH 134/967] Try to make a segfault --- test/github_issue_1057.cpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/test/github_issue_1057.cpp b/test/github_issue_1057.cpp index 0835049ba..97bff3cee 100644 --- a/test/github_issue_1057.cpp +++ b/test/github_issue_1057.cpp @@ -31,6 +31,16 @@ void test_both() BOOST_TEST_EQ(x, -DecimalType(2, -1)); } +template +void test_segfault() +{ + DecimalType x = boost::decimal::strtod(" \n \t +", nullptr); + BOOST_TEST(boost::decimal::isnan(x)); + + x = boost::decimal::strtod(" \n \t", nullptr); + BOOST_TEST(boost::decimal::isnan(x)); +} + int main() { using namespace boost::decimal; @@ -56,5 +66,12 @@ int main() test_both(); test_both(); + test_segfault(); + test_segfault(); + test_segfault(); + test_segfault(); + test_segfault(); + test_segfault(); + return boost::report_errors(); } From eec189a7c6b85c9dce7e73930ba843d9ba73ba67 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 12:42:33 +0200 Subject: [PATCH 135/967] Add reproducer test set --- test/Jamfile | 1 + test/github_issue_1054.cpp | 106 +++++++++++++++++++++++++++++++++++++ 2 files changed, 107 insertions(+) create mode 100644 test/github_issue_1054.cpp diff --git a/test/Jamfile b/test/Jamfile index 5cedaf1f4..f7f47a98c 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -64,6 +64,7 @@ run github_issue_911.cpp ; run github_issue_988.cpp ; run github_issue_1026.cpp ; run github_issue_1035.cpp ; +run github_issue_1054.cpp ; run github_issue_1057.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp new file mode 100644 index 000000000..ef8526f28 --- /dev/null +++ b/test/github_issue_1054.cpp @@ -0,0 +1,106 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1054 + +#include +#include + +using namespace boost::decimal; + +// https://en.cppreference.com/w/cpp/compiler_support/17 +#if (defined(__GNUC__) && __GNUC__ >= 11) || \ +((defined(__clang__) && __clang_major__ >= 14 && !defined(__APPLE__)) || (defined(__clang__) && defined(__APPLE__) && __clang_major__ >= 16)) || \ +(defined(_MSC_VER) && _MSC_VER >= 1924) + +# if __cplusplus >= 201702L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201702L) +# include +# define BOOST_DECIMAL_TEST_CHARCONV +# endif + +#endif + +#ifdef BOOST_DECIMAL_TEST_CHARCONV + +template +void endptr_using_from_chars(const std::string& str) +{ + auto get_endptr_1 = [](const auto& s) { + DecimalType x; + return boost::decimal::from_chars(s.data(), s.data() + s.size(), x).ptr; + }; + auto get_endptr_2 = [](const auto& s) { + double x; + return std::from_chars(s.data(), s.data() + s.size(), x).ptr; + }; + BOOST_TEST_CSTR_EQ(get_endptr_1(str), get_endptr_2(str)); +} + +#else + +template +void endptr_using_from_chars(const std::string&) {} + +#endif + +template +void endptr_using_strtod(const std::string& str) +{ + auto get_endptr_1 = [](const auto& s) { + char* ptr; + boost::decimal::strtod(s.data(), &ptr); + return ptr; + }; + auto get_endptr_2 = [](const auto& s) { + char* ptr; + std::strtod(s.data(), &ptr); + return ptr; + }; + + BOOST_TEST_CSTR_EQ(get_endptr_1(str), get_endptr_2(str)); +} + +template +void check_endptr() +{ + // endptr should points to the character after "inf" + endptr_using_from_chars("info"); + endptr_using_strtod("info"); + + // endptr should points to the beginning of the string + endptr_using_from_chars("inch"); + endptr_using_strtod("inch"); + + // endptr should points to the character after "nan" + endptr_using_from_chars("nano"); + endptr_using_strtod("nano"); + + // endptr should points to the beginning of the string + endptr_using_from_chars("name"); + endptr_using_strtod("name"); + + #ifdef __APPLE__ + // Darwin's strtod works incorrectly for nan with payload, so skip the test. + #else + // endptr should points to the character after "nan(PAYLOAD)" + endptr_using_from_chars("nan(PAYLOAD)"); + endptr_using_strtod("nan(PAYLOAD)"); + + // endptr should points to the character after "nan" + endptr_using_from_chars("nan(..BAD..)"); + endptr_using_strtod("nan(..BAD..)"); + #endif +} + +int main() +{ + check_endptr(); + check_endptr(); + check_endptr(); + check_endptr(); + check_endptr(); + check_endptr(); + + return boost::report_errors(); +} From 48761daaba6c6d6fc1fcc010e8a49b0f842d59d3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 12:42:49 +0200 Subject: [PATCH 136/967] Fix return of valid inf or bad parse --- include/boost/decimal/detail/parser.hpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index cb4b0949e..230d3abdd 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -106,12 +106,13 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++next; if (next != last && (*next == 'f' || *next == 'F')) { + ++next; significand = 0; return {next, std::errc::value_too_large}; } } - return {next, std::errc::invalid_argument}; + return {first, std::errc::invalid_argument}; } else if (next != last && (*next == 'n' || *next == 'N')) { From dad26b79d23703fdfe78c6f395bd6f2e9a15d4a6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 12:42:59 +0200 Subject: [PATCH 137/967] Fix return of bad nan parse --- include/boost/decimal/detail/parser.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index 230d3abdd..e22510967 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -145,7 +145,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ } } - return {next, std::errc::invalid_argument}; + return {first, std::errc::invalid_argument}; } // Ignore leading zeros (e.g. 00005 or -002.3e+5) From fdb5a7dd76bc1dba9479b678bec217867068c51c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 15:01:30 +0200 Subject: [PATCH 138/967] Parse through an arbitrary payload --- include/boost/decimal/detail/parser.hpp | 46 ++++++++++++++++++++++--- 1 file changed, 42 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index e22510967..f437ab618 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -37,6 +37,11 @@ constexpr auto is_hex_char(char c) noexcept -> bool return is_integer_char(c) || (((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <= 'F'))); } +constexpr auto is_payload_char(const char c) noexcept -> bool +{ + return is_integer_char(c) || (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'))); +} + constexpr auto is_delimiter(char c, chars_format fmt) noexcept -> bool { if (fmt != chars_format::hex) @@ -125,17 +130,50 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++next; if (next != last && (*next == '(')) { + const auto current_pos {next}; ++next; - if (next != last && (*next == 's' || *next == 'S')) + + // Handle nan(SNAN) + if ((next + 3) != last && (*next == 's' || *next == 'S') && (*(next + 1) == 'n' || *(next + 1) == 'N') + && (*(next + 2) == 'a' || *(next + 2) == 'A') && (*(next + 3) == 'n' || *(next + 3) == 'N')) { + next += 3; significand = 1; - return {next, std::errc::not_supported}; } - else if (next != last && (*next == 'i' || *next == 'I')) + // Handle Nan(IND) + else if ((next + 3)!= last && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') + && (*(next + 2) == 'd' || *(next + 2) == 'D')) { + next += 2; significand = 0; - return {next, std::errc::not_supported}; } + + // Arbitrary payload + bool valid_payload {false}; + while (next != last && (*next != ')')) + { + if (is_payload_char(*next)) + { + ++next; + valid_payload = true; + } + else + { + valid_payload = false; + break; + } + } + + if (valid_payload) + { + ++next; + } + else + { + next = current_pos; + } + + return {next, std::errc::not_supported}; } else { From 8b58bf295dc205e3c4609877e59404f9e43354d2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 15:15:19 +0200 Subject: [PATCH 139/967] Heavily restrict testing --- test/github_issue_1054.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp index ef8526f28..57ba3eaeb 100644 --- a/test/github_issue_1054.cpp +++ b/test/github_issue_1054.cpp @@ -95,6 +95,9 @@ void check_endptr() int main() { + // Restrict testing to a small cohort of compilers that we know generate correct results + #if defined(__GNUC__) && __GNUC__ >= 10 + check_endptr(); check_endptr(); check_endptr(); @@ -102,5 +105,7 @@ int main() check_endptr(); check_endptr(); + #endif + return boost::report_errors(); } From c11b6a8cecda39a03c8e1c80c5cede7761c202de Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 15:35:39 +0200 Subject: [PATCH 140/967] Re-arrange logic to avoid segfault --- include/boost/decimal/detail/parser.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index f437ab618..f9a6a0cd0 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -134,14 +134,14 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++next; // Handle nan(SNAN) - if ((next + 3) != last && (*next == 's' || *next == 'S') && (*(next + 1) == 'n' || *(next + 1) == 'N') + if ((last - next) >= 3 && (*next == 's' || *next == 'S') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'a' || *(next + 2) == 'A') && (*(next + 3) == 'n' || *(next + 3) == 'N')) { next += 3; significand = 1; } // Handle Nan(IND) - else if ((next + 3)!= last && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') + else if ((last - next) >= 2 && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'd' || *(next + 2) == 'D')) { next += 2; From 70cf4ff39515550221298e52e2eb8c7076ed778f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 15:36:43 +0200 Subject: [PATCH 141/967] Use the correct __cplusplus value for c++17 --- test/github_issue_1054.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp index 57ba3eaeb..6ab4e7172 100644 --- a/test/github_issue_1054.cpp +++ b/test/github_issue_1054.cpp @@ -14,7 +14,7 @@ using namespace boost::decimal; ((defined(__clang__) && __clang_major__ >= 14 && !defined(__APPLE__)) || (defined(__clang__) && defined(__APPLE__) && __clang_major__ >= 16)) || \ (defined(_MSC_VER) && _MSC_VER >= 1924) -# if __cplusplus >= 201702L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201702L) +# if __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) # include # define BOOST_DECIMAL_TEST_CHARCONV # endif From 84bfb1e6901b26eab6a1882b7987f91f7ced5428 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 15:38:40 +0200 Subject: [PATCH 142/967] Don't run on mingw --- test/github_issue_1054.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp index 6ab4e7172..f3ed6dc24 100644 --- a/test/github_issue_1054.cpp +++ b/test/github_issue_1054.cpp @@ -96,7 +96,7 @@ void check_endptr() int main() { // Restrict testing to a small cohort of compilers that we know generate correct results - #if defined(__GNUC__) && __GNUC__ >= 10 + #if defined(__GNUC__) && __GNUC__ >= 10 && !defined(__MINGW32__) check_endptr(); check_endptr(); From df1424a5ef1ad59a23f6056cca113eb0dd208713 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 16:13:33 +0200 Subject: [PATCH 143/967] Increment size of offset check --- include/boost/decimal/detail/parser.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index f9a6a0cd0..442632757 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -134,14 +134,14 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++next; // Handle nan(SNAN) - if ((last - next) >= 3 && (*next == 's' || *next == 'S') && (*(next + 1) == 'n' || *(next + 1) == 'N') + if ((last - next) >= 4 && (*next == 's' || *next == 'S') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'a' || *(next + 2) == 'A') && (*(next + 3) == 'n' || *(next + 3) == 'N')) { next += 3; significand = 1; } // Handle Nan(IND) - else if ((last - next) >= 2 && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') + else if ((last - next) >= 3 && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'd' || *(next + 2) == 'D')) { next += 2; From 9c308840bb8c27c0bfb59594f3b59de0d6c3ae5c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 16:41:44 +0200 Subject: [PATCH 144/967] Ignore maybe-uninitialized warning --- test/github_issue_1054.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp index f3ed6dc24..8e60799b5 100644 --- a/test/github_issue_1054.cpp +++ b/test/github_issue_1054.cpp @@ -44,6 +44,11 @@ void endptr_using_from_chars(const std::string&) {} #endif +#if defined(__GNUC__) && (__GNUC__ >= 7) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + template void endptr_using_strtod(const std::string& str) { From da5f4e776de90fe8f89f7a2459e0082f6e6929cd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 12 Sep 2025 21:23:22 +0200 Subject: [PATCH 145/967] Define earlier --- test/github_issue_1054.cpp | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp index 8e60799b5..ee1c2b3aa 100644 --- a/test/github_issue_1054.cpp +++ b/test/github_issue_1054.cpp @@ -4,6 +4,11 @@ // // See: https://github.com/cppalliance/decimal/issues/1054 +#if defined(__GNUC__) && (__GNUC__ >= 7) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + #include #include @@ -44,11 +49,6 @@ void endptr_using_from_chars(const std::string&) {} #endif -#if defined(__GNUC__) && (__GNUC__ >= 7) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - template void endptr_using_strtod(const std::string& str) { From fb386ec0aab9f7b716c7731d7e1e26c250e63b4a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 11:06:22 +0200 Subject: [PATCH 146/967] Add test set --- test/Jamfile | 1 + test/github_issue_1055.cpp | 63 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) create mode 100644 test/github_issue_1055.cpp diff --git a/test/Jamfile b/test/Jamfile index f7f47a98c..d1e6fb780 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -65,6 +65,7 @@ run github_issue_988.cpp ; run github_issue_1026.cpp ; run github_issue_1035.cpp ; run github_issue_1054.cpp ; +run github_issue_1055.cpp ; run github_issue_1057.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; diff --git a/test/github_issue_1055.cpp b/test/github_issue_1055.cpp new file mode 100644 index 000000000..87f0baf41 --- /dev/null +++ b/test/github_issue_1055.cpp @@ -0,0 +1,63 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1055 + +#include +#include + +using namespace boost::decimal; + +template +void endpos_using_istream(const std::string& str, const int expected_endpos) +{ + std::istringstream is(str); + DecimalType x; + + is >> x; + is.clear(); + const auto endpos = is.tellg(); + + if (!BOOST_TEST_EQ(endpos, expected_endpos)) + { + // LCOV_EXCL_START + std::cerr << "String: " << str << '\n' + << "Expected: " << expected_endpos << '\n' + << "Got: " << is.tellg() << std::endl; + // LCOV_EXCL_STOP + } +} + +template +void check_endpos() +{ + // Expected end positions match double handling with GCC 15.2 on x64 + endpos_using_istream("Decimal!", 0); + endpos_using_istream("127.0.0.1", 5); + endpos_using_istream("nullptr", 0); + + // Handling of nan and infinity is already an exception to what is supposed to happen + // We'll claim that it's like the IP address case where everything past INF or NAN is considered junk + endpos_using_istream("INF", 3); + endpos_using_istream("INFinity", 3); + endpos_using_istream("INFinite", 3); + + endpos_using_istream("nan", 3); + endpos_using_istream("nanfinity", 3); + endpos_using_istream("nan(snan)", 9); + endpos_using_istream("nan(snan)JUNK", 9); +} + +int main() +{ + check_endpos(); + check_endpos(); + check_endpos(); + + check_endpos(); + check_endpos(); + check_endpos(); + + return boost::report_errors(); +} From df34b0404822c0db9cd71f31e9b50b1865aa0c92 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 11:06:53 +0200 Subject: [PATCH 147/967] Put back all characters past r.ec --- include/boost/decimal/detail/io.hpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index 99a40a877..9de46ade7 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -39,6 +39,8 @@ auto operator>>(std::basic_istream& is, DecimalType& d) charT t_buffer[1024] {}; // What should be an unreasonably high maximum is >> std::setw(1023) >> t_buffer; + const auto t_buffer_len {std::char_traits::length(t_buffer)}; + char buffer[1024] {}; BOOST_DECIMAL_IF_CONSTEXPR (!std::is_same::value) @@ -75,11 +77,13 @@ auto operator>>(std::basic_istream& is, DecimalType& d) } auto first {buffer}; + std::size_t offset {}; if (*first == '+') { // Having a leading + sign is legal in iostream, but not allowed with charconv // Pre-processing this case away helps support for both ++first; + ++offset; } auto r = from_chars(first, buffer + std::strlen(buffer), d, fmt); @@ -93,6 +97,15 @@ auto operator>>(std::basic_istream& is, DecimalType& d) errno = EINVAL; } + // Put back unconsumed characters + const auto consumed {static_cast(r.ptr - buffer) + offset}; + const auto return_chars {static_cast(t_buffer_len - consumed)}; + + for (std::size_t i {}; i < return_chars; ++i) + { + is.putback(t_buffer[t_buffer_len - i - 1]); + } + return is; } From d757ac79c408139c600fdbeb8b8bc0b4ac35f46b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 11:17:00 +0200 Subject: [PATCH 148/967] Add documentation note on istream of non-finite values --- doc/modules/ROOT/pages/generic_decimal.adoc | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/doc/modules/ROOT/pages/generic_decimal.adoc b/doc/modules/ROOT/pages/generic_decimal.adoc index 422d875b7..04dd51237 100644 --- a/doc/modules/ROOT/pages/generic_decimal.adoc +++ b/doc/modules/ROOT/pages/generic_decimal.adoc @@ -160,3 +160,21 @@ decimal128_t d); In the event of binary arithmetic between a non-decimal type and a decimal type the arithmetic will occur between the native types, and the result will be returned as the same type as the decimal operand. (e.g. decimal32_t * uint64_t -> decimal32_t) In the event of binary arithmetic between two decimal types the result will be the higher precision type of the two (e.g. decimal64_t + decimal32_t -> decimal64_t) + +== 3.2.10 Note +Unlike built-in binary floating point types the library allows input of non-finite values such as the below: + +[source, c++] +---- +std::istringstream is("INF"); +decimal32_t x; +is >> x; +const auto endpos {is.tellg()}; + +assert(isinf(x)); +assert(endpos == 3); +---- + +The result of `tellg()` will only parse until a complete non-finite value is found and then terminate. +For example `nanfinity` will construct a `NAN` and set `endpos = 3`, or `nan(snan)JUNK` will construct `SNAN` and set `endpos = 9` since `nan(snan)` contains a valid payload. +This is designed to match the value of `r.ptr` in xref:charconv.adoc[``]. From 8204239e09fce32ed11866a601eee31d460f0698 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 11:46:06 +0200 Subject: [PATCH 149/967] Fix double counted offset leading to segfault --- include/boost/decimal/detail/io.hpp | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index 9de46ade7..4afacb429 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -77,13 +77,11 @@ auto operator>>(std::basic_istream& is, DecimalType& d) } auto first {buffer}; - std::size_t offset {}; if (*first == '+') { // Having a leading + sign is legal in iostream, but not allowed with charconv // Pre-processing this case away helps support for both ++first; - ++offset; } auto r = from_chars(first, buffer + std::strlen(buffer), d, fmt); @@ -98,7 +96,8 @@ auto operator>>(std::basic_istream& is, DecimalType& d) } // Put back unconsumed characters - const auto consumed {static_cast(r.ptr - buffer) + offset}; + const auto consumed {static_cast(r.ptr - buffer)}; + BOOST_DECIMAL_ASSERT(t_buffer_len >= consumed); const auto return_chars {static_cast(t_buffer_len - consumed)}; for (std::size_t i {}; i < return_chars; ++i) From 5e3503f8cb52d3ba248c7f4883753332b058ca63 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 11:46:19 +0200 Subject: [PATCH 150/967] Test endpos when we strip leading plus sign --- test/test_decimal32_stream.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/test/test_decimal32_stream.cpp b/test/test_decimal32_stream.cpp index bdd2c5f44..e8e795229 100644 --- a/test/test_decimal32_stream.cpp +++ b/test/test_decimal32_stream.cpp @@ -18,6 +18,9 @@ void test_istream() in.str("+1.234567e+06"); in >> val; BOOST_TEST_EQ(val, decimal32_t(1234567, 0)); + in.clear(); + const auto endpos {in.tellg()}; + BOOST_TEST_EQ(endpos, 13); errno = 0; decimal32_t val2; From 2171f3088358e2c956f55f9a76e9250a5c7b1f5e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 12:02:55 +0200 Subject: [PATCH 151/967] Replace incorrectly rounded sub with correct addition --- include/boost/decimal/decimal128_t.hpp | 13 ++++++------- include/boost/decimal/decimal_fast128_t.hpp | 13 ++++++------- 2 files changed, 12 insertions(+), 14 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index b7813d94d..c18f917a1 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -33,7 +33,6 @@ #include #include #include -#include #include #include #include @@ -1510,9 +1509,9 @@ constexpr auto operator-(const decimal128_t& lhs, const decimal128_t& rhs) noexc auto exp_rhs {rhs.biased_exponent()}; detail::expand_significand(sig_rhs, exp_rhs); - return detail::d128_sub_impl( + return detail::d128_add_impl( sig_lhs, exp_lhs, lhs.isneg(), - sig_rhs, exp_rhs, rhs.isneg(), + sig_rhs, exp_rhs, !rhs.isneg(), abs(lhs) > abs(rhs)); } @@ -1539,9 +1538,9 @@ constexpr auto operator-(const decimal128_t lhs, const Integer rhs) noexcept exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); - return detail::d128_sub_impl( + return detail::d128_add_impl( sig_lhs, exp_lhs, lhs.isneg(), - sig_rhs, exp_rhs, (rhs < 0), + sig_rhs, exp_rhs, !(rhs < 0), abs_lhs_bigger); } @@ -1568,9 +1567,9 @@ constexpr auto operator-(const Integer lhs, const decimal128_t rhs) noexcept auto exp_rhs {rhs.biased_exponent()}; detail::expand_significand(sig_rhs, exp_rhs); - return detail::d128_sub_impl( + return detail::d128_add_impl( sig_lhs, exp_lhs, (lhs < 0), - sig_rhs, exp_rhs, rhs.isneg(), + sig_rhs, exp_rhs, !rhs.isneg(), abs_lhs_bigger); } diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 93899a662..a24527891 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -12,7 +12,6 @@ #include #include #include -#include #include #include #include @@ -847,9 +846,9 @@ constexpr auto operator-(const decimal_fast128_t& lhs, const decimal_fast128_t& } #endif - return detail::d128_sub_impl( + return detail::d128_add_impl( lhs.significand_, lhs.biased_exponent(), lhs.sign_, - rhs.significand_, rhs.biased_exponent(), rhs.sign_, + rhs.significand_, rhs.biased_exponent(), !rhs.sign_, abs(lhs) > abs(rhs)); } @@ -872,9 +871,9 @@ constexpr auto operator-(const decimal_fast128_t& lhs, const Integer rhs) noexce exp_type exp_rhs {0}; detail::normalize(sig_rhs, exp_rhs); - return detail::d128_sub_impl( + return detail::d128_add_impl( lhs.significand_, lhs.biased_exponent(), lhs.sign_, - sig_rhs, exp_rhs, (rhs < 0), + sig_rhs, exp_rhs, !(rhs < 0), abs_lhs_bigger); } @@ -897,9 +896,9 @@ constexpr auto operator-(const Integer lhs, const decimal_fast128_t& rhs) noexce exp_type exp_lhs {0}; detail::normalize(sig_lhs, exp_lhs); - return detail::d128_sub_impl( + return detail::d128_add_impl( sig_lhs, exp_lhs, (lhs < 0), - rhs.significand_, rhs.biased_exponent(), rhs.sign_, + rhs.significand_, rhs.biased_exponent(), !rhs.sign_, abs_lhs_bigger); } From b496284860ac1fb946613cb858abc25d6a80deb3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 12:03:08 +0200 Subject: [PATCH 152/967] Completely remove now unused header file --- include/boost/decimal/decimal32_t.hpp | 1 - include/boost/decimal/decimal64_t.hpp | 1 - include/boost/decimal/decimal_fast64_t.hpp | 1 - include/boost/decimal/detail/sub_impl.hpp | 88 ---------------------- 4 files changed, 91 deletions(-) delete mode 100644 include/boost/decimal/detail/sub_impl.hpp diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 846e85019..1fbbee956 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -33,7 +33,6 @@ #include #include #include -#include #include #include #include diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 3624524ca..94bec826c 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -35,7 +35,6 @@ #include #include #include -#include #include #include #include diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 27c6261b6..a46d09f7f 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -12,7 +12,6 @@ #include #include #include -#include #include #include #include diff --git a/include/boost/decimal/detail/sub_impl.hpp b/include/boost/decimal/detail/sub_impl.hpp deleted file mode 100644 index e3bc61ca6..000000000 --- a/include/boost/decimal/detail/sub_impl.hpp +++ /dev/null @@ -1,88 +0,0 @@ -// Copyright 2023 - 2024 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_DETAIL_SUB_IMPL_HPP -#define BOOST_DECIMAL_DETAIL_SUB_IMPL_HPP - -#include -#include -#include -#include "int128.hpp" - -#ifndef BOOST_DECIMAL_BUILD_MODULE -#include -#endif - -namespace boost { -namespace decimal { -namespace detail { - -template -constexpr auto d128_sub_impl(T lhs_sig, U lhs_exp, bool lhs_sign, - T rhs_sig, U rhs_exp, bool rhs_sign, - bool abs_lhs_bigger) noexcept -> ReturnType -{ - auto delta_exp {lhs_exp > rhs_exp ? lhs_exp - rhs_exp : rhs_exp - lhs_exp}; - - if (delta_exp > detail::precision_v + 1) - { - // If the difference in exponents is more than the digits of accuracy - // we return the larger of the two - // - // e.g. 1e20 - 1e-20 = 1e20 - return abs_lhs_bigger ? ReturnType{lhs_sig, lhs_exp, lhs_sign} : - ReturnType{rhs_sig, rhs_exp, !rhs_sign}; - } - - // The two numbers can be subtracted together without special handling - - auto& sig_bigger {abs_lhs_bigger ? lhs_sig : rhs_sig}; - auto& exp_bigger {abs_lhs_bigger ? lhs_exp : rhs_exp}; - auto& sig_smaller {abs_lhs_bigger ? rhs_sig : lhs_sig}; - auto& smaller_sign {abs_lhs_bigger ? rhs_sign : lhs_sign}; - - if (delta_exp == 1) - { - sig_bigger *= 10U; - --delta_exp; - --exp_bigger; - } - else - { - if (delta_exp >= 2) - { - sig_bigger *= 100U; - delta_exp -= 2; - exp_bigger -= 2; - } - - if (delta_exp > 1) - { - sig_smaller /= pow10>(delta_exp - 1); - delta_exp = 1; - } - - if (delta_exp == 1) - { - detail::fenv_round(sig_smaller, smaller_sign); - } - } - - const auto signed_sig_lhs {detail::make_signed_value(lhs_sig, lhs_sign)}; - const auto signed_sig_rhs {detail::make_signed_value(rhs_sig, rhs_sign)}; - - const auto new_sig {signed_sig_lhs - signed_sig_rhs}; - - const auto new_exp {abs_lhs_bigger ? lhs_exp : rhs_exp}; - const auto new_sign {new_sig < 0}; - const auto res_sig {detail::make_positive_unsigned(new_sig)}; - - return {T{res_sig.high, res_sig.low}, new_exp, new_sign}; -} - -} // namespace detail -} // namespace decimal -} // namespace boost - -#endif //BOOST_DECIMAL_DETAIL_SUB_IMPL_HPP From d649701071ef69a83e7b3a8e766d178cd165c95d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 12:18:15 +0200 Subject: [PATCH 153/967] Add increment operator --- include/boost/decimal/detail/u256.hpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/boost/decimal/detail/u256.hpp b/include/boost/decimal/detail/u256.hpp index 291d19dcf..b56fb3810 100644 --- a/include/boost/decimal/detail/u256.hpp +++ b/include/boost/decimal/detail/u256.hpp @@ -62,6 +62,9 @@ u256 constexpr u256& operator%=(const u256& rhs) noexcept; constexpr u256& operator%=(std::uint64_t rhs) noexcept; + + constexpr u256& operator++() noexcept; + constexpr u256& operator++(int) noexcept; }; } // namespace detail @@ -727,6 +730,19 @@ constexpr u256 operator+(const u256& lhs, const u256& rhs) noexcept #endif +constexpr u256& u256::operator++() noexcept +{ + *this = *this + static_cast(1); + return *this; +} + +constexpr u256& u256::operator++(int) noexcept +{ + *this = *this + static_cast(1); + return *this; +} + + //===================================== // Multiplication Operators //===================================== From b455ed73004b74e748c5c47c1cbd1ee1337bd992 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 12:18:35 +0200 Subject: [PATCH 154/967] Overload type traits for u256 --- include/boost/decimal/detail/type_traits.hpp | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/boost/decimal/detail/type_traits.hpp b/include/boost/decimal/detail/type_traits.hpp index 269ca2f12..8d5d920b8 100644 --- a/include/boost/decimal/detail/type_traits.hpp +++ b/include/boost/decimal/detail/type_traits.hpp @@ -8,6 +8,7 @@ // Extends the current type traits to include our types and __int128s #include #include +#include #include "int128.hpp" #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -37,6 +38,9 @@ struct is_signed { static constexpr bool value = false;}; #endif +template <> +struct is_signed { static constexpr bool value = false; }; + template constexpr bool is_signed::value; @@ -112,6 +116,9 @@ struct is_integral { static constexpr bool value = true; }; #endif +template <> +struct is_integral { static constexpr bool value = true; }; + template constexpr bool is_integral::value; From 078a0f68c7c881ac705f5178bb79821fe5964609 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 13:11:49 +0200 Subject: [PATCH 155/967] Reduce trailing zeros of rhs --- include/boost/decimal/decimal128_t.hpp | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index c18f917a1..157cac8de 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -1398,13 +1398,8 @@ constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, d static_cast(r); #endif - auto sig_lhs {lhs.full_significand()}; - auto exp_lhs {lhs.biased_exponent()}; - detail::expand_significand(sig_lhs, exp_lhs); - - auto sig_rhs {rhs.full_significand()}; - auto exp_rhs {rhs.biased_exponent()}; - detail::expand_significand(sig_rhs, exp_rhs); + auto lhs_components {lhs.to_components()}; + detail::expand_significand(lhs_components.sig, lhs_components.exp); #ifdef BOOST_DECIMAL_DEBUG std::cerr << "sig lhs: " << sig_lhs @@ -1413,11 +1408,9 @@ constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, d << "\nexp rhs: " << exp_rhs << std::endl; #endif - detail::decimal128_t_components lhs_components {sig_lhs, exp_lhs, lhs.isneg()}; - detail::decimal128_t_components rhs_components {sig_rhs, exp_rhs, rhs.isneg()}; detail::decimal128_t_components q_components {}; - detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); + detail::d128_generic_div_impl(lhs_components, rhs.to_components(), q_components); q = decimal128_t(q_components.sig, q_components.exp, q_components.sign); } From bdc58e10f27b4d14425cfc25a1e85d7a2fa2fd44 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 14:48:29 +0200 Subject: [PATCH 156/967] Improve decoding --- include/boost/decimal/decimal128_t.hpp | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 157cac8de..708a0348d 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -1664,11 +1664,8 @@ constexpr auto operator/(const decimal128_t lhs, const Integer rhs) noexcept } #endif - auto lhs_sig {lhs.full_significand()}; - auto lhs_exp {lhs.biased_exponent()}; - detail::expand_significand(lhs_sig, lhs_exp); - - const detail::decimal128_t_components lhs_components {lhs_sig, lhs_exp, lhs.isneg()}; + auto lhs_components {lhs.to_components()}; + detail::expand_significand(lhs_components.sig, lhs_components.exp); const detail::decimal128_t_components rhs_components {detail::make_positive_unsigned(rhs), 0, rhs < 0}; detail::decimal128_t_components q_components {}; @@ -1708,12 +1705,10 @@ constexpr auto operator/(const Integer lhs, const decimal128_t rhs) noexcept } #endif - auto rhs_sig {rhs.full_significand()}; - auto rhs_exp {rhs.biased_exponent()}; - detail::expand_significand(rhs_sig, rhs_exp); + auto rhs_components {rhs.to_components()}; + detail::expand_significand(rhs_components.sig, rhs_components.exp); const detail::decimal128_t_components lhs_components {detail::make_positive_unsigned(lhs), 0, lhs < 0}; - const detail::decimal128_t_components rhs_components {rhs_sig, rhs_exp, rhs.isneg()}; detail::decimal128_t_components q_components {}; detail::d128_generic_div_impl(lhs_components, rhs_components, q_components); From d032639d0affb30aaabdbbb05e80a1c9c93deba1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 18:58:23 +0200 Subject: [PATCH 157/967] Fix ambiguous operator< --- include/boost/decimal/detail/u256.hpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/boost/decimal/detail/u256.hpp b/include/boost/decimal/detail/u256.hpp index b56fb3810..10f568bd3 100644 --- a/include/boost/decimal/detail/u256.hpp +++ b/include/boost/decimal/detail/u256.hpp @@ -263,6 +263,16 @@ constexpr bool operator<(const u256& lhs, const u256& rhs) noexcept #endif +constexpr bool operator<(const u256& lhs, const int128::uint128_t& rhs) noexcept +{ + return lhs[3] == 0U && lhs[2] == 0U && int128::uint128_t{lhs[1], lhs[0]} < rhs; +} + +constexpr bool operator<(const int128::uint128_t& lhs, const u256& rhs) noexcept +{ + return rhs[3] == 0U && rhs[2] == 0U && lhs < int128::uint128_t{rhs[1], rhs[0]}; +} + constexpr bool operator<(const u256& lhs, const std::uint64_t rhs) noexcept { return lhs[3] == 0 && lhs[2] == 0 && lhs[1] == 0 && lhs[0] < rhs; From 1777e0c893f3791f07b7c7fb17c2fdf3850e703b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 15:53:16 +0200 Subject: [PATCH 158/967] Add div mod impl --- .../boost/decimal/detail/fenv_rounding.hpp | 44 ++++++++++++++++--- 1 file changed, 39 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 07a9a79f3..b7d7c76e9 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -18,6 +18,38 @@ namespace detail { namespace impl { +template +struct divmod_result +{ + T quotient; + T remainder; +}; + +template ::value, bool> = true> +constexpr auto divmod(T dividend, T divisor) noexcept -> divmod_result +{ + // Compilers usually can lump these together + T q {dividend / divisor}; + T r {dividend % divisor}; + return {q, r}; +} + +template ::value, bool> = true> +constexpr auto divmod(T dividend, T divisor) noexcept -> divmod_result +{ + T q {dividend / divisor}; + T r {dividend - q * divisor}; + return {q, r}; +} + +template +constexpr auto divmod10(T dividend) noexcept -> divmod_result +{ + T q {dividend / 10U}; + T r {dividend - q * 10U}; + return {q, r}; +} + template constexpr auto fenv_round_impl(T& val, const bool is_neg, const bool sticky, const rounding_mode round = _boost_decimal_global_rounding_mode) noexcept -> int { @@ -25,8 +57,9 @@ constexpr auto fenv_round_impl(T& val, const bool is_neg, const bool sticky, con int exp {1}; - const auto trailing_num {static_cast(val % 10U)}; - val /= 10U; + auto div_res {divmod10(val)}; + val = div_res.quotient; + const auto trailing_num {static_cast(div_res.remainder)}; // Default rounding mode switch (round) @@ -138,11 +171,12 @@ constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bo // Do shifting const auto shift_pow_ten {detail::pow10(static_cast(shift))}; - const auto shifted_coeff {coeff / shift_pow_ten}; - const auto trailing_digits {coeff % shift_pow_ten}; + const auto div_res {impl::divmod(coeff, shift_pow_ten)}; + const auto shifted_coeff {div_res.quotient}; + const auto trailing_digits {div_res.remainder}; coeff = shifted_coeff; - const auto sticky {trailing_digits != 0u}; + const auto sticky {trailing_digits != 0U}; exp += shift; biased_exp += shift; coeff_digits -= shift; From 015a8602f10b8e98a9f266e6911596bd87fdc19f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 16:16:14 +0200 Subject: [PATCH 159/967] Add div mod function for u256 --- include/boost/decimal/detail/u256.hpp | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/boost/decimal/detail/u256.hpp b/include/boost/decimal/detail/u256.hpp index 10f568bd3..b3564e21d 100644 --- a/include/boost/decimal/detail/u256.hpp +++ b/include/boost/decimal/detail/u256.hpp @@ -1045,6 +1045,29 @@ BOOST_DECIMAL_FORCE_INLINE constexpr u256 default_div(const u256& lhs, const Uns return from_words(q); } +struct u256_divmod_result +{ + u256 quotient; + u256 remainder; +}; + +template +BOOST_DECIMAL_FORCE_INLINE constexpr auto div_mod(const u256& lhs, const UnsignedInteger& rhs) noexcept -> u256_divmod_result +{ + std::uint32_t u[8] {}; + std::uint32_t v[8] {}; + std::uint32_t q[8] {}; + + const auto m {div_to_words(lhs, u)}; + const auto n {div_to_words(rhs, v)}; + + BOOST_DECIMAL_DETAIL_INT128_ASSERT(m >= n); + + int128::detail::impl::knuth_divide(u, m, v, n, q); + + return {from_words(q), from_words(u)}; +} + } // namespace impl constexpr u256 operator/(const u256& lhs, const u256& rhs) noexcept From 2e1f6cc844d44888e8236c4d94b5ed41bd13d71b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 16:16:26 +0200 Subject: [PATCH 160/967] Specialize u256 divmod --- include/boost/decimal/detail/fenv_rounding.hpp | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index b7d7c76e9..84e523a7c 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -42,6 +42,11 @@ constexpr auto divmod(T dividend, T divisor) noexcept -> divmod_result return {q, r}; } +constexpr auto divmod(const u256& lhs, const u256& rhs) noexcept +{ + return div_mod(lhs, rhs); +} + template constexpr auto divmod10(T dividend) noexcept -> divmod_result { @@ -50,6 +55,12 @@ constexpr auto divmod10(T dividend) noexcept -> divmod_result return {q, r}; } +constexpr auto divmod10(const u256& lhs) noexcept +{ + constexpr int128::uint128_t ten {10U}; + return div_mod(lhs, ten); +} + template constexpr auto fenv_round_impl(T& val, const bool is_neg, const bool sticky, const rounding_mode round = _boost_decimal_global_rounding_mode) noexcept -> int { From 22fda4e2d981ac063a46d1f65709e3896c5a4cd4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 16:28:16 +0200 Subject: [PATCH 161/967] Specialize divmod10 for emulated type --- .../boost/decimal/detail/fenv_rounding.hpp | 24 +++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 84e523a7c..4ff01ce68 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -25,6 +25,13 @@ struct divmod_result T remainder; }; +template +struct divmod10_result +{ + T quotient; + std::uint64_t remainder; +}; + template ::value, bool> = true> constexpr auto divmod(T dividend, T divisor) noexcept -> divmod_result { @@ -48,11 +55,11 @@ constexpr auto divmod(const u256& lhs, const u256& rhs) noexcept } template -constexpr auto divmod10(T dividend) noexcept -> divmod_result +constexpr auto divmod10(const T dividend) noexcept -> divmod10_result { - T q {dividend / 10U}; - T r {dividend - q * 10U}; - return {q, r}; + const T q {dividend / 10U}; + const T r {dividend - q * 10U}; + return {q, static_cast(r)}; } constexpr auto divmod10(const u256& lhs) noexcept @@ -61,6 +68,15 @@ constexpr auto divmod10(const u256& lhs) noexcept return div_mod(lhs, ten); } +constexpr auto divmod10(const int128::uint128_t lhs) noexcept -> divmod10_result +{ + constexpr std::uint32_t ten {10U}; + int128::uint128_t q {}; + int128::uint128_t r {}; + int128::detail::half_word_div(lhs, ten, q, r); + return {q, r.low}; +} + template constexpr auto fenv_round_impl(T& val, const bool is_neg, const bool sticky, const rounding_mode round = _boost_decimal_global_rounding_mode) noexcept -> int { From ed8bb5dcb92ca6a3eb1b2d8263f597069ede0fc8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 15 Sep 2025 18:51:44 +0200 Subject: [PATCH 162/967] Remove unneeded cast --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 4ff01ce68..345edbc4c 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -86,7 +86,7 @@ constexpr auto fenv_round_impl(T& val, const bool is_neg, const bool sticky, con auto div_res {divmod10(val)}; val = div_res.quotient; - const auto trailing_num {static_cast(div_res.remainder)}; + const auto trailing_num {div_res.remainder}; // Default rounding mode switch (round) From 2c40d3c1a27816ffb7bd79fc2ccc906720104021 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 16 Sep 2025 08:29:52 +0200 Subject: [PATCH 163/967] Update documentation link --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 8939f7e5d..ab0010d08 100644 --- a/README.md +++ b/README.md @@ -155,7 +155,7 @@ int main() # Full Documentation -The complete documentation can be found at: https://develop.decimal.cpp.al/decimal/overview.html +The complete documentation can be found at: https://develop.decimal.cpp.al ## References From 5ddcb928cd82db5723f5a9596064021fca0ebbc5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 11:30:06 +0200 Subject: [PATCH 164/967] Increase tolerances for decimal32_t pow --- test/test_pow.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/test/test_pow.cpp b/test/test_pow.cpp index 3b45b9c77..4ca7bc25d 100644 --- a/test/test_pow.cpp +++ b/test/test_pow.cpp @@ -1123,10 +1123,10 @@ auto main() -> int using float_type = float; const auto test_pow_edge_is_ok = local::test_pow_edge (); - const auto test_pow_n_edge_is_ok = local::test_pow_n_edge(256); - const auto test_pow_pos_is_ok = local::test_pow (256, false); - const auto test_pow_neg_is_ok = local::test_pow (256, true); - const auto test_pow_n_is_ok = local::test_pow_n (256); + const auto test_pow_n_edge_is_ok = local::test_pow_n_edge(512); + const auto test_pow_pos_is_ok = local::test_pow (512, false); + const auto test_pow_neg_is_ok = local::test_pow (512, true); + const auto test_pow_n_is_ok = local::test_pow_n (512); const auto result_test_pow_is_ok = (test_pow_pos_is_ok && test_pow_neg_is_ok && test_pow_edge_is_ok && test_pow_n_edge_is_ok && test_pow_n_is_ok); From 7af8f26191c0f4e448ab5b8b840fc4fd95db6b36 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 12:34:47 +0200 Subject: [PATCH 165/967] Change coverage toolchain --- .github/workflows/codecov.yml | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml index 6c3dec916..e755038f1 100644 --- a/.github/workflows/codecov.yml +++ b/.github/workflows/codecov.yml @@ -1,4 +1,4 @@ -# ------------------------------------------------------------------------------ +# ------------------------------------------------------------------------------ # Copyright Matt Borland 2023 - 2024. # Copyright Christopher Kormanyos 2023 - 2024. # Distributed under the Boost Software License, @@ -17,14 +17,14 @@ on: types: [opened, synchronize, reopened] jobs: gcc-gcov-native: - runs-on: ubuntu-latest + runs-on: ubuntu-22.04 defaults: run: shell: bash strategy: fail-fast: false matrix: - standard: [ c++20 ] + standard: [ c++2a ] compiler: [ g++ ] steps: - uses: actions/checkout@v4 From a19a698c8a23741a6f7d5e91657110c6b9e34fb2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 13:33:48 +0200 Subject: [PATCH 166/967] Mark bounds checks as unlikely --- include/boost/decimal/charconv.hpp | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 520c463c9..aeb157230 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -53,7 +53,7 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ std::numeric_limits::digits), int128::uint128_t, std::uint64_t>; - if (first >= last) + if (BOOST_DECIMAL_UNLIKELY(first >= last)) { return {first, std::errc::invalid_argument}; } @@ -290,7 +290,7 @@ constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDec const auto real_precision {get_real_precision()}; // Dummy check the bounds - if (buffer_size < real_precision) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < real_precision)) { return {last, std::errc::value_too_large}; } @@ -545,7 +545,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT const auto real_precision {get_real_precision()}; // Dummy check the bounds - if (buffer_size < real_precision) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < real_precision)) { return {last, std::errc::value_too_large}; } @@ -588,7 +588,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT if (exp >= 0) { - if (buffer_size < (current - first) + num_digits + exp) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < (current - first) + num_digits + exp)) { return {last, std::errc::value_too_large}; } @@ -598,7 +598,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT } else if (abs_exp < num_digits) { - if (buffer_size < (current - first) + num_digits + 1) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < (current - first) + num_digits + 1)) { return {last, std::errc::value_too_large}; } @@ -612,7 +612,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT else { const auto leading_zeros {abs_exp - num_digits}; - if (buffer_size < (current - first) + 2 + leading_zeros + num_digits) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < (current - first) + 2 + leading_zeros + num_digits)) { return {last, std::errc::value_too_large}; } @@ -637,7 +637,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_fixed_impl(char* first, char* last, const auto real_precision = get_real_precision(local_precision); // Dummy check the bounds - if (buffer_size < real_precision) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < real_precision)) { return {last, std::errc::value_too_large}; } @@ -917,7 +917,7 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp const auto real_precision {get_real_precision()}; // Dummy check the bounds - if (buffer_size < real_precision) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < real_precision)) { return {last, std::errc::value_too_large}; } @@ -1008,7 +1008,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_hex_impl(char* first, char* last, const Ta real_precision = local_precision; } - if (buffer_size < real_precision) + if (BOOST_DECIMAL_UNLIKELY(buffer_size < real_precision)) { return {last, std::errc::value_too_large}; } @@ -1118,7 +1118,7 @@ template BOOST_DECIMAL_CONSTEXPR auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt = chars_format::general, const int local_precision = -1) noexcept -> to_chars_result { // Sanity check our bounds - if (first >= last) + if (BOOST_DECIMAL_UNLIKELY(first >= last)) { return {last, std::errc::invalid_argument}; } From e9857b0c16d1c33bfbf2dede26e09c314426e1f3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 13:41:20 +0200 Subject: [PATCH 167/967] Cover sanity check and exclude further boundary checks --- include/boost/decimal/charconv.hpp | 10 +++++----- test/test_to_chars.cpp | 9 +++++++++ 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index aeb157230..5ae069f2d 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -292,7 +292,7 @@ constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDec // Dummy check the bounds if (BOOST_DECIMAL_UNLIKELY(buffer_size < real_precision)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } using uint_type = std::conditional_t<(std::numeric_limits::digits > @@ -590,7 +590,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT { if (BOOST_DECIMAL_UNLIKELY(buffer_size < (current - first) + num_digits + exp)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } detail::memset(r.ptr, '0', static_cast(exp)); @@ -600,7 +600,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT { if (BOOST_DECIMAL_UNLIKELY(buffer_size < (current - first) + num_digits + 1)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } const auto decimal_pos {num_digits - abs_exp}; @@ -614,7 +614,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT const auto leading_zeros {abs_exp - num_digits}; if (BOOST_DECIMAL_UNLIKELY(buffer_size < (current - first) + 2 + leading_zeros + num_digits)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } detail::memmove(current + 2 + leading_zeros, current, static_cast(num_digits)); @@ -919,7 +919,7 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp // Dummy check the bounds if (BOOST_DECIMAL_UNLIKELY(buffer_size < real_precision)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } const auto components {value.to_components()}; diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index 4d6e0605b..bd744bc0f 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -228,6 +228,9 @@ void test_fixed_format() char buffer[1]; auto to_r = to_chars(buffer, buffer + sizeof(buffer), val, chars_format::fixed); BOOST_TEST(to_r.ec == std::errc::value_too_large); + + to_r = to_chars(buffer, buffer + sizeof(buffer), val, chars_format::fixed, 10); + BOOST_TEST(to_r.ec == std::errc::value_too_large); } template @@ -276,6 +279,12 @@ void test_hex_format() char buffer[1]; auto to_r = to_chars(buffer, buffer + sizeof(buffer), val, chars_format::hex); BOOST_TEST(to_r.ec == std::errc::value_too_large); + + to_r = to_chars(buffer, buffer + sizeof(buffer), val, chars_format::hex, 10); + BOOST_TEST(to_r.ec == std::errc::value_too_large); + + to_r = to_chars(buffer + sizeof(buffer), buffer, val, chars_format::hex, 16); + BOOST_TEST(to_r.ec == std::errc::invalid_argument); } #ifdef BOOST_DECIMAL_HAS_STD_CHARCONV From 310cff86bd6fad702c65e3f1b2779d5153466869 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 13:43:33 +0200 Subject: [PATCH 168/967] Cover negative sign handling path --- test/test_to_chars.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index bd744bc0f..ecb0a6f36 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -275,7 +275,12 @@ void test_hex_format() } // Now one with bad bounds - const T val {dist(rng)}; + T val {dist(rng)}; + if (val > 0) + { + val = -val; // LCOV_EXCL_LINE (might not be hit) + } + char buffer[1]; auto to_r = to_chars(buffer, buffer + sizeof(buffer), val, chars_format::hex); BOOST_TEST(to_r.ec == std::errc::value_too_large); From 1dbbd60129ead0445a6b64f98dbd680e98dae656 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 13:48:03 +0200 Subject: [PATCH 169/967] Ignore unreachable line --- include/boost/decimal/charconv.hpp | 2 +- test/test_to_chars.cpp | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 5ae069f2d..15f45547e 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -244,7 +244,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_nonfinite(char* first, char* last, const T } } - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE : Should be unreachable case FP_NAN: if (issignaling(value) && buffer_len >= 9) { diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index ecb0a6f36..34f4da8d3 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -231,6 +231,10 @@ void test_fixed_format() to_r = to_chars(buffer, buffer + sizeof(buffer), val, chars_format::fixed, 10); BOOST_TEST(to_r.ec == std::errc::value_too_large); + + const auto new_val {val * 0}; + to_r = to_chars(buffer, buffer + sizeof(buffer), new_val, chars_format::fixed, 10); + BOOST_TEST(to_r.ec == std::errc::value_too_large); } template From ed0f046fa7457661029a4239d2525eabc679f6c8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 13:54:39 +0200 Subject: [PATCH 170/967] Add coverage of denorm value construction --- test/test_decimal32_fast_basis.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/test/test_decimal32_fast_basis.cpp b/test/test_decimal32_fast_basis.cpp index 7fd9a81f5..e145cef11 100644 --- a/test/test_decimal32_fast_basis.cpp +++ b/test/test_decimal32_fast_basis.cpp @@ -91,6 +91,10 @@ void test_decimal_constructor() decimal_fast32_t rounded_big(1234568, 2); BOOST_TEST_EQ(big, rounded_big); + + // Try to make a denorm value + decimal_fast32_t denorm(1000000, -102); + BOOST_TEST_EQ(denorm, 0); } void test_non_finite_values() From 58bc49088f892a66056bdbd575509c67e896a9df Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 14:10:15 +0200 Subject: [PATCH 171/967] Test construction for binary floating point nan --- test/test_decimal32_fast_basis.cpp | 1 + 1 file changed, 1 insertion(+) diff --git a/test/test_decimal32_fast_basis.cpp b/test/test_decimal32_fast_basis.cpp index e145cef11..e2760514c 100644 --- a/test/test_decimal32_fast_basis.cpp +++ b/test/test_decimal32_fast_basis.cpp @@ -113,6 +113,7 @@ void test_non_finite_values() BOOST_TEST(std::numeric_limits::has_signaling_NaN); BOOST_TEST(isnan(std::numeric_limits::quiet_NaN())); BOOST_TEST(isnan(std::numeric_limits::signaling_NaN())); + BOOST_TEST(isnan(decimal_fast32_t{std::numeric_limits::quiet_NaN()})); BOOST_TEST(!isnan(one)); BOOST_TEST(!isnan(std::numeric_limits::infinity())); BOOST_TEST(!isnan(-std::numeric_limits::infinity())); From 31bead9de8581d51946929d28b9b958640264bd6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 14:19:09 +0200 Subject: [PATCH 172/967] Cover fast path division of zero --- test/random_decimal32_fast_math.cpp | 1 + 1 file changed, 1 insertion(+) diff --git a/test/random_decimal32_fast_math.cpp b/test/random_decimal32_fast_math.cpp index 0b6a956ef..eb663c0e4 100644 --- a/test/random_decimal32_fast_math.cpp +++ b/test/random_decimal32_fast_math.cpp @@ -376,6 +376,7 @@ void random_division(T lower, T upper) BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() / decimal_fast32_t(dist(rng)))); BOOST_TEST(isnan(decimal_fast32_t(dist(rng)) / std::numeric_limits::quiet_NaN())); BOOST_TEST(isinf(decimal_fast32_t(dist(rng)) / decimal_fast32_t(0))); + BOOST_TEST(!isinf(decimal_fast32_t(0) / decimal_fast32_t(dist(rng)))); } template From bc945c885cc3e8c6978b51aca9dc0dccf64821d7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 14:24:11 +0200 Subject: [PATCH 173/967] Cover construction for double NAN --- test/test_decimal64_fast_basis.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/test/test_decimal64_fast_basis.cpp b/test/test_decimal64_fast_basis.cpp index 92aa567ec..120603d69 100644 --- a/test/test_decimal64_fast_basis.cpp +++ b/test/test_decimal64_fast_basis.cpp @@ -143,6 +143,8 @@ void test_non_finite_values() BOOST_TEST(isnan(detail::check_non_finite(std::numeric_limits::quiet_NaN() * dist(rng), one))); BOOST_TEST(isinf(detail::check_non_finite(one, std::numeric_limits::infinity() * dist(rng)))); BOOST_TEST(isinf(detail::check_non_finite(std::numeric_limits::infinity() * dist(rng), one))); + + BOOST_TEST(isnan(decimal_fast64_t{std::numeric_limits::quiet_NaN()})); } #if !defined(__GNUC__) || (__GNUC__ != 7 && __GNUC__ != 8) From 3479e9a8027b03c5383b687dcf0b3d583767b991 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 14:44:36 +0200 Subject: [PATCH 174/967] Cover fast path division of zero --- test/random_decimal128_fast_math.cpp | 2 ++ test/random_decimal64_fast_math.cpp | 2 ++ 2 files changed, 4 insertions(+) diff --git a/test/random_decimal128_fast_math.cpp b/test/random_decimal128_fast_math.cpp index 188b76070..529340cba 100644 --- a/test/random_decimal128_fast_math.cpp +++ b/test/random_decimal128_fast_math.cpp @@ -434,6 +434,8 @@ void random_mixed_division(T lower, T upper) BOOST_TEST_EQ(abs(dist(rng) / std::numeric_limits::infinity() * T(dist(rng))), zero); BOOST_TEST(isinf(decimal_fast128_t(dist(rng)) / 0 * dist(rng))); BOOST_TEST(isinf(val1 / zero)); + + BOOST_TEST(T{0} / val1 == zero); } int main() diff --git a/test/random_decimal64_fast_math.cpp b/test/random_decimal64_fast_math.cpp index e2ca2783d..3ab3d929f 100644 --- a/test/random_decimal64_fast_math.cpp +++ b/test/random_decimal64_fast_math.cpp @@ -413,6 +413,8 @@ void random_mixed_division(T lower, T upper) BOOST_TEST_EQ(abs(dist(rng) / std::numeric_limits::infinity()), zero); BOOST_TEST(isinf(decimal_fast64_t(dist(rng)) / 0)); BOOST_TEST(isinf(val1 / zero)); + + BOOST_TEST(T{0} / val1 == zero); } int main() From 180cd6b2ebbbfc012265852b98e941b5d043a2b9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 14:56:26 +0200 Subject: [PATCH 175/967] Annotate unlikely RYU lines --- include/boost/decimal/detail/ryu/ryu_generic_128.hpp | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp index ce4b3b4d5..a21594653 100644 --- a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp +++ b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp @@ -90,9 +90,9 @@ inline constexpr auto generic_binary_to_decimal( if (explicitLeadingBit) { // mantissaBits includes the explicit leading bit, so we need to correct for that here. - if (ieeeExponent == 0) + if (BOOST_DECIMAL_UNLIKELY(ieeeExponent == 0)) { - e2 = static_cast(1 - local_bias - mantissaBits + 1 - 2); + e2 = static_cast(1 - local_bias - mantissaBits + 1 - 2); // LCOV_EXCL_LINE } else { @@ -102,10 +102,10 @@ inline constexpr auto generic_binary_to_decimal( } else { - if (ieeeExponent == 0) + if (BOOST_DECIMAL_UNLIKELY(ieeeExponent == 0)) { - e2 = static_cast(1 - local_bias - mantissaBits - 2); - m2 = ieeeMantissa; + e2 = static_cast(1 - local_bias - mantissaBits - 2); // LCOV_EXCL_LINE + m2 = ieeeMantissa; // LCOV_EXCL_LINE } else { e2 = static_cast(ieeeExponent - local_bias - mantissaBits - 2U); From 8e66559a0fdf1281f23cc3f0f9edbea1bc6f1f8d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 15:24:27 +0200 Subject: [PATCH 176/967] Try improve logb coverage --- test/test_cmath.cpp | 28 ++++++++++++++++------------ 1 file changed, 16 insertions(+), 12 deletions(-) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index ad63ae15a..a3c6d3aae 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -517,33 +517,37 @@ void test_ilogb() BOOST_TEST_EQ(ilogb(Dec(10, 0)), 6177); } - BOOST_TEST_EQ(ilogb(Dec(0)), FP_ILOGB0); - BOOST_TEST_EQ(ilogb(std::numeric_limits::infinity()), INT_MAX); - BOOST_TEST_EQ(ilogb(std::numeric_limits::quiet_NaN()), FP_ILOGBNAN); + std::uniform_int_distribution dist(1, 2); + + BOOST_TEST_EQ(ilogb(Dec(0 * dist(rng))), FP_ILOGB0); + BOOST_TEST_EQ(ilogb(std::numeric_limits::infinity() * dist(rng)), INT_MAX); + BOOST_TEST_EQ(ilogb(std::numeric_limits::quiet_NaN() * dist(rng)), FP_ILOGBNAN); } template void test_logb() { + std::uniform_int_distribution dist(1, 1); + BOOST_DECIMAL_IF_CONSTEXPR (std::is_same::value || std::is_same::value) { - BOOST_TEST_EQ(ilogb(Dec(1, 0)), Dec(101)); - BOOST_TEST_EQ(ilogb(Dec(10, 0)), Dec(102)); + BOOST_TEST_EQ(ilogb(Dec(1 * dist(rng), 0)), Dec(101)); + BOOST_TEST_EQ(ilogb(Dec(10 * dist(rng), 0)), Dec(102)); } else BOOST_DECIMAL_IF_CONSTEXPR (std::is_same::value || std::is_same::value) { - BOOST_TEST_EQ(ilogb(Dec(1, 0)), Dec(398)); - BOOST_TEST_EQ(ilogb(Dec(10, 0)), Dec(399)); + BOOST_TEST_EQ(ilogb(Dec(1 * dist(rng), 0)), Dec(398)); + BOOST_TEST_EQ(ilogb(Dec(10 * dist(rng), 0)), Dec(399)); } else { - BOOST_TEST_EQ(ilogb(Dec(1, 0)), 6176); - BOOST_TEST_EQ(ilogb(Dec(10, 0)), 6177); + BOOST_TEST_EQ(ilogb(Dec(1 * dist(rng), 0)), 6176); + BOOST_TEST_EQ(ilogb(Dec(10 * dist(rng), 0)), 6177); } - BOOST_TEST_EQ(logb(Dec(0)), -std::numeric_limits::infinity()); - BOOST_TEST_EQ(logb(std::numeric_limits::infinity()), std::numeric_limits::infinity()); - BOOST_TEST(isnan(logb(std::numeric_limits::quiet_NaN()))); + BOOST_TEST_EQ(logb(Dec(0 * dist(rng))), -std::numeric_limits::infinity()); + BOOST_TEST_EQ(logb(std::numeric_limits::infinity() * dist(rng)), std::numeric_limits::infinity()); + BOOST_TEST(isnan(logb(std::numeric_limits::quiet_NaN() * dist(rng)))); } #ifdef _MSC_VER From e427b6d34c98cdd6eb45eece008139fee353c62f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 17 Sep 2025 15:48:08 +0200 Subject: [PATCH 177/967] Mark additional bounds checks and false negative --- include/boost/decimal/charconv.hpp | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 15f45547e..605a33998 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -325,9 +325,9 @@ constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDec // Make sure the result will fit in the buffer before continuing progress const auto total_length {total_buffer_length(static_cast(current_digits), exp, is_neg)}; - if (total_length > buffer_size) + if (BOOST_DECIMAL_UNLIKELY(total_length > buffer_size)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } // Insert our decimal point (or don't in the 1 digit case) @@ -428,7 +428,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_scientific_impl(char* first, char* last, c } else if (significand_digits > local_precision + 1) { - const auto original_sig = significand; + const auto original_sig = significand; // LCOV_EXCL_LINE : False negative fenv_round(significand); if (remove_trailing_zeros(original_sig + 1U).trimmed_number == 1U) { @@ -739,9 +739,9 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_fixed_impl(char* first, char* last, const // Make sure the result will fit in the buffer const std::ptrdiff_t total_length = total_buffer_length(num_dig, exponent, is_neg) + num_leading_zeros; - if (total_length > buffer_size) + if (BOOST_DECIMAL_UNLIKELY(total_length > buffer_size)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } // Insert the leading zeros and return if the answer is ~0 for current precision @@ -946,9 +946,9 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp // Make sure the result will fit in the buffer before continuing progress const auto total_length {total_buffer_length(static_cast(current_digits), exp, is_neg)}; - if (total_length > buffer_size) + if (BOOST_DECIMAL_UNLIKELY(total_length > buffer_size)) { - return {last, std::errc::value_too_large}; + return {last, std::errc::value_too_large}; // LCOV_EXCL_LINE } // Insert our decimal point (or don't in the 1 digit case) From 128e707e53a11d57792ccc55c388cc848e44212c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 19 Sep 2025 15:31:05 +0200 Subject: [PATCH 178/967] Add components conversion operator --- include/boost/decimal/detail/components.hpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/boost/decimal/detail/components.hpp b/include/boost/decimal/detail/components.hpp index 46c9eb093..0e37c4647 100644 --- a/include/boost/decimal/detail/components.hpp +++ b/include/boost/decimal/detail/components.hpp @@ -47,6 +47,12 @@ struct decimal_components { return sign; } + + template + explicit constexpr operator decimal_components() const + { + return decimal_components{static_cast(sig), static_cast(exp), sign}; + } }; } // namespace impl From c3b28df0877af954d382f6bded0c3ca70ed9f696 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 19 Sep 2025 15:31:20 +0200 Subject: [PATCH 179/967] Remove normalization from FMA impl --- include/boost/decimal/detail/cmath/fma.hpp | 25 ++++++++-------------- 1 file changed, 9 insertions(+), 16 deletions(-) diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index 65f07ca44..fc6f6af5c 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -33,8 +33,8 @@ using components_type = std::conditional_t::value template constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T { - using T_components_type = components_type; - using exp_type = typename T::biased_exponent_type; + using promoted_type = std::conditional_t::value, decimal64_t, decimal_fast64_t>; + using promoted_components = components_type; // Apply the add #ifndef BOOST_DECIMAL_FAST_MATH @@ -47,14 +47,10 @@ constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T } #endif - int exp_lhs {}; - auto sig_lhs = frexp10(x, &exp_lhs); - - int exp_rhs {}; - auto sig_rhs = frexp10(y, &exp_rhs); + const auto x_components {x.to_components()}; + const auto y_components {y.to_components()}; - auto first_res = detail::mul_impl(sig_lhs, static_cast(exp_lhs), x < 0, - sig_rhs, static_cast(exp_rhs), y < 0); + auto first_res {detail::mul_impl(x_components, y_components)}; // Apply the mul on the carried components // We still create the result as a decimal type to check for non-finite values and comparisons, @@ -72,14 +68,11 @@ constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T } #endif - int exp_z {}; - auto sig_z = frexp10(z, &exp_z); - detail::normalize(first_res.sig, first_res.exp); + auto z_components {static_cast(z.to_components())}; + detail::expand_significand(z_components.sig, z_components.exp); + detail::expand_significand(first_res.sig, first_res.exp); - return detail::add_impl( - T_components_type{first_res.sig, first_res.exp, first_res.sign}, - T_components_type{sig_z, static_cast(exp_z), z < 0} - ); + return static_cast(detail::add_impl(first_res, z_components)); } template From 86da32a9942b925c437d0c98586279f75252cfd5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 19 Sep 2025 15:31:34 +0200 Subject: [PATCH 180/967] Fix friendship of FMA impl --- include/boost/decimal/decimal32_t.hpp | 9 +++++++-- include/boost/decimal/decimal_fast32_t.hpp | 4 +++- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 1fbbee956..9888dbb00 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -96,11 +96,14 @@ template constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; template -constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; + } // namespace detail #if defined(__GNUC__) && __GNUC__ >= 8 @@ -555,7 +558,9 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special // functions that need to be friends friend constexpr auto copysignd32(decimal32_t mag, decimal32_t sgn) noexcept -> decimal32_t; - friend constexpr auto fmad32(decimal32_t x, decimal32_t y, decimal32_t z) noexcept -> decimal32_t; + + template + friend constexpr auto detail::d32_fma_impl(T x, T y, T z) noexcept -> T; // Related to template diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index b15ce4a77..ace3ed7b9 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -369,7 +369,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final friend constexpr auto copysignd32f(decimal_fast32_t mag, decimal_fast32_t sgn) noexcept -> decimal_fast32_t; friend constexpr auto scalbnd32f(decimal_fast32_t num, int exp) noexcept -> decimal_fast32_t; friend constexpr auto scalblnd32f(decimal_fast32_t num, long exp) noexcept -> decimal_fast32_t; - friend constexpr auto fmad32f(decimal_fast32_t x, decimal_fast32_t y, decimal_fast32_t z) noexcept -> decimal_fast32_t; + + template + friend constexpr auto detail::d32_fma_impl(T x, T y, T z) noexcept -> T; template friend constexpr auto ilogb(T d) noexcept From 12ce68793ac941e4b13ebec27cb36e29e6f7e63a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 19 Sep 2025 15:33:10 +0200 Subject: [PATCH 181/967] Determine used types based on inputs not outputs --- include/boost/decimal/detail/add_impl.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index e6d4cfd83..19d6f60ea 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -32,8 +32,8 @@ constexpr auto add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType // Each of the significands is maximally 23 bits. // Rather than doing division to get proper alignment we will promote to 64 bits // And do a single mul followed by an add - using add_type = std::conditional_t < 64, std::int_fast64_t, int128::int128_t>; - using promoted_sig_type = std::conditional_t < 64, std::uint_fast64_t, int128::uint128_t>; + using add_type = std::conditional_t < 64, std::int_fast64_t, int128::int128_t>; + using promoted_sig_type = std::conditional_t < 64, std::uint_fast64_t, int128::uint128_t>; promoted_sig_type big_lhs {lhs.full_significand()}; promoted_sig_type big_rhs {rhs.full_significand()}; From 13e40446a0c97b103e1569175aa2f931f1b4b247 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 19 Sep 2025 15:33:23 +0200 Subject: [PATCH 182/967] Remove duplicate construction --- include/boost/decimal/detail/cmath/fma.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index fc6f6af5c..e86626e02 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -72,7 +72,7 @@ constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T detail::expand_significand(z_components.sig, z_components.exp); detail::expand_significand(first_res.sig, first_res.exp); - return static_cast(detail::add_impl(first_res, z_components)); + return detail::add_impl(first_res, z_components); } template From e2b5247bb43459cb3fa79323c5d8038d9efa5d75 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 19 Sep 2025 15:38:12 +0200 Subject: [PATCH 183/967] Const correctness --- include/boost/decimal/detail/cmath/fma.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index e86626e02..bd8eb1e31 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -173,7 +173,7 @@ BOOST_DECIMAL_EXPORT constexpr auto fma(const decimal32_t x, const decimal32_t y return detail::d32_fma_impl(x, y, z); } -BOOST_DECIMAL_EXPORT constexpr auto fma(decimal64_t x, decimal64_t y, decimal64_t z) noexcept -> decimal64_t +BOOST_DECIMAL_EXPORT constexpr auto fma(const decimal64_t x, const decimal64_t y, const decimal64_t z) noexcept -> decimal64_t { return detail::d64_fma_impl(x, y, z); } From 35c9b4f5a5c039e3abe9cfda79f7012cb05ed099 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 11:21:58 +0200 Subject: [PATCH 184/967] Make 64 bit FMA a friend impl --- include/boost/decimal/decimal64_t.hpp | 7 ++++++- include/boost/decimal/decimal_fast64_t.hpp | 4 +++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 94bec826c..77f427dea 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -100,6 +100,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; + } //namespace detail #if defined(__GNUC__) && __GNUC__ >= 8 @@ -216,6 +219,9 @@ BOOST_DECIMAL_EXPORT class decimal64_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; + public: // 3.2.3.1 construct/copy/destroy constexpr decimal64_t() noexcept = default; @@ -566,7 +572,6 @@ BOOST_DECIMAL_EXPORT class decimal64_t final friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; friend constexpr auto copysignd64(decimal64_t mag, decimal64_t sgn) noexcept -> decimal64_t; - friend constexpr auto fmad64(decimal64_t x, decimal64_t y, decimal64_t z) noexcept -> decimal64_t; friend constexpr auto scalbnd64(decimal64_t num, int exp) noexcept -> decimal64_t; friend constexpr auto scalblnd64(decimal64_t num, long exp) noexcept -> decimal64_t; }; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index a46d09f7f..7ab959a73 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -155,6 +155,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; + public: constexpr decimal_fast64_t() noexcept = default; @@ -384,7 +387,6 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto frexp10(T num, int* expptr) noexcept -> typename T::significand_type; friend constexpr auto copysignd64f(decimal_fast64_t mag, decimal_fast64_t sgn) noexcept -> decimal_fast64_t; - friend constexpr auto fmad64f(decimal_fast64_t x, decimal_fast64_t y, decimal_fast64_t z) noexcept -> decimal_fast64_t; friend constexpr auto scalbnd64f(decimal_fast64_t num, int exp) noexcept -> decimal_fast64_t; friend constexpr auto scalblnd64f(decimal_fast64_t num, long exp) noexcept -> decimal_fast64_t; }; From 7452dbd53f35cce82e8be60220aab0097c32d590 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 11:24:11 +0200 Subject: [PATCH 185/967] Only check non-finite values with checked version --- include/boost/decimal/detail/cmath/fma.hpp | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index bd8eb1e31..2fd66f209 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -101,14 +101,14 @@ constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T auto first_res = detail::d64_mul_impl(sig_lhs, static_cast(exp_lhs), x < 0, sig_rhs, static_cast(exp_rhs), y < 0); - // Apply the mul on the carried components - // We still create the result as a decimal type to check for non-finite values and comparisons, - // but we do not use it for the resultant calculation - const T complete_lhs {first_res.sig, first_res.exp, first_res.sign}; - #ifndef BOOST_DECIMAL_FAST_MATH BOOST_DECIMAL_IF_CONSTEXPR (checked) { + // Apply the mul on the carried components + // We still create the result as a decimal type to check for non-finite values and comparisons, + // but we do not use it for the resultant calculation + const T complete_lhs {first_res.sig, first_res.exp, first_res.sign}; + if (!isfinite(complete_lhs) || !isfinite(z)) { return detail::check_non_finite(complete_lhs, z); From ca3f71aabbb615950e9f009eb19cee8f6ae076f6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 12:31:41 +0200 Subject: [PATCH 186/967] Add helper functions --- include/boost/decimal/detail/add_impl.hpp | 8 ++++++++ include/boost/decimal/detail/mul_impl.hpp | 9 ++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/add_impl.hpp b/include/boost/decimal/detail/add_impl.hpp index 19d6f60ea..7b60ccc67 100644 --- a/include/boost/decimal/detail/add_impl.hpp +++ b/include/boost/decimal/detail/add_impl.hpp @@ -223,6 +223,14 @@ constexpr auto d128_add_impl(T lhs_sig, U lhs_exp, bool lhs_sign, # pragma warning(pop) #endif +template +constexpr auto d128_add_impl(const decimal128_t_components& lhs, const decimal128_t_components& rhs, const bool abs_lhs_bigger) noexcept -> ReturnType +{ + return d128_add_impl(lhs.sig, lhs.exp, lhs.sign, + rhs.sig, rhs.exp, rhs.sign, + abs_lhs_bigger); +} + } // namespace detail } // namespace decimal } // namespace boost diff --git a/include/boost/decimal/detail/mul_impl.hpp b/include/boost/decimal/detail/mul_impl.hpp index e66bfa559..8d8b4d9be 100644 --- a/include/boost/decimal/detail/mul_impl.hpp +++ b/include/boost/decimal/detail/mul_impl.hpp @@ -29,7 +29,7 @@ namespace detail { template BOOST_DECIMAL_FORCE_INLINE constexpr auto mul_impl(const T& lhs, const T& rhs) noexcept -> ReturnType { - using mul_type = std::uint_fast64_t; + using mul_type = std::conditional_t < 64, std::uint_fast64_t, int128::uint128_t>; // The constructor needs to calculate the number of digits in the significand which for uint128 is slow // Since we know the value of res_sig is constrained to [1'000'000^2, 9'999'999^2] which equates to @@ -193,6 +193,13 @@ constexpr auto d128_fast_mul_impl(const T1& lhs_sig, const U1 lhs_exp, const boo return {int128::uint128_t{res_sig[1], res_sig[0]}, res_exp, sign}; } +template +BOOST_DECIMAL_FORCE_INLINE auto mul_impl(const decimal128_t_components& lhs, const decimal128_t_components& rhs) noexcept -> ReturnType +{ + return d128_mul_impl(lhs.sig, lhs.exp, lhs.sign, + rhs.sig, rhs.exp, rhs.sign); +} + } // namespace detail } // namespace decimal } // namespace boost From 36c6fc913ea067a4b71c3a6aa9d3b8b8b19a21e8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 12:33:34 +0200 Subject: [PATCH 187/967] Remove second rounding step from 64-bit fma --- include/boost/decimal/detail/cmath/fma.hpp | 33 +++++++++------------- 1 file changed, 13 insertions(+), 20 deletions(-) diff --git a/include/boost/decimal/detail/cmath/fma.hpp b/include/boost/decimal/detail/cmath/fma.hpp index 2fd66f209..50230b834 100644 --- a/include/boost/decimal/detail/cmath/fma.hpp +++ b/include/boost/decimal/detail/cmath/fma.hpp @@ -78,8 +78,8 @@ constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T template constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T { - using T_components_type = components_type; - using exp_type = typename T::biased_exponent_type; + using promoted_type = std::conditional_t::value, decimal128_t, decimal_fast128_t>; + using promoted_components = components_type; // Apply the add #ifndef BOOST_DECIMAL_FAST_MATH @@ -92,23 +92,19 @@ constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T } #endif - int exp_lhs {}; - auto sig_lhs = frexp10(x, &exp_lhs); + const auto x_components {x.to_components()}; + const auto y_components {y.to_components()}; - int exp_rhs {}; - auto sig_rhs = frexp10(y, &exp_rhs); + auto first_res {detail::mul_impl(x_components, y_components)}; - auto first_res = detail::d64_mul_impl(sig_lhs, static_cast(exp_lhs), x < 0, - sig_rhs, static_cast(exp_rhs), y < 0); + // Apply the mul on the carried components + // We still create the result as a decimal type to check for non-finite values and comparisons, + // but we do not use it for the resultant calculation + const T complete_lhs {first_res.sig, first_res.exp, first_res.sign}; #ifndef BOOST_DECIMAL_FAST_MATH BOOST_DECIMAL_IF_CONSTEXPR (checked) { - // Apply the mul on the carried components - // We still create the result as a decimal type to check for non-finite values and comparisons, - // but we do not use it for the resultant calculation - const T complete_lhs {first_res.sig, first_res.exp, first_res.sign}; - if (!isfinite(complete_lhs) || !isfinite(z)) { return detail::check_non_finite(complete_lhs, z); @@ -116,14 +112,11 @@ constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T } #endif - int exp_z {}; - auto sig_z = frexp10(z, &exp_z); - detail::normalize(first_res.sig, first_res.exp); + auto z_components {static_cast(z.to_components())}; + detail::expand_significand(z_components.sig, z_components.exp); + detail::expand_significand(first_res.sig, first_res.exp); - return detail::add_impl( - first_res, - decimal64_t_components{sig_z, static_cast(exp_z), z < 0} - ); + return detail::d128_add_impl(first_res, z_components, abs(complete_lhs) > abs(z)); } template From 4fa4fd936e6f5530a6e5e4cdfcf75b2b3b4b032d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 12:57:04 +0200 Subject: [PATCH 188/967] Remove deprecated macOS version --- .github/workflows/ci.yml | 7 ------- 1 file changed, 7 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 948770bdd..1ba8b3a5c 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -287,9 +287,6 @@ jobs: source_keys: - "https://apt.llvm.org/llvm-snapshot.gpg.key" - - toolset: clang - cxxstd: "03,11,14,17,20,2b" - os: macos-13 - toolset: clang cxxstd: "03,11,14,17,20,2b" os: macos-14 @@ -572,7 +569,6 @@ jobs: matrix: include: - os: ubuntu-24.04 - - os: macos-13 - os: macos-14 - os: macos-15 @@ -620,7 +616,6 @@ jobs: matrix: include: - os: ubuntu-24.04 - - os: macos-13 - os: macos-14 - os: macos-15 @@ -678,7 +673,6 @@ jobs: matrix: include: - os: ubuntu-24.04 - - os: macos-13 - os: macos-14 - os: macos-15 @@ -734,7 +728,6 @@ jobs: matrix: include: - os: ubuntu-24.04 - - os: macos-13 - os: macos-14 - os: macos-15 From 8b54b3936eec9ca59a528cd32feb950026fc307d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 13:26:28 +0200 Subject: [PATCH 189/967] Ignore false negative in coverage --- include/boost/decimal/cstdlib.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/cstdlib.hpp b/include/boost/decimal/cstdlib.hpp index 2380be653..a74770c7e 100644 --- a/include/boost/decimal/cstdlib.hpp +++ b/include/boost/decimal/cstdlib.hpp @@ -72,7 +72,7 @@ inline auto strtod_calculation(const char* str, char** endptr, char* buffer, con { if (significand) { - d = std::numeric_limits::signaling_NaN(); + d = std::numeric_limits::signaling_NaN(); // LCOV_EXCL_LINE : False negative } else { From eb248d5dbd02f1ba7636d7090fc6b3ac5fd4e3a9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 13:26:44 +0200 Subject: [PATCH 190/967] Add test for leading whitespace in snprintf format --- test/test_snprintf.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/test/test_snprintf.cpp b/test/test_snprintf.cpp index 645c6678d..11488c9a2 100644 --- a/test/test_snprintf.cpp +++ b/test/test_snprintf.cpp @@ -114,6 +114,9 @@ void test_bootstrap() const char* format = std::is_same::value ? "%H" : std::is_same::value ? "%D" : "%DD"; + const char* format_w_spaces = std::is_same::value ? " %H" : + std::is_same::value ? " %D" : "\t%DD"; + const char* general_format = std::is_same::value ? "%Hg" : std::is_same::value ? "%Dg" : "%DDg"; @@ -153,6 +156,7 @@ void test_bootstrap() { // General test test(T{rng()}, format); + test(T{rng()}, format_w_spaces); test(T{rng()}, general_format); test(T{rng()}, three_digit_format, chars_format::general, 3); test_uppercase(T{rng()}, general_upper_format); From 17255ad79f8ec111f479562b3024aeda391369e7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 13:26:57 +0200 Subject: [PATCH 191/967] Fix removing of whitespace characters --- include/boost/decimal/cstdio.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/cstdio.hpp b/include/boost/decimal/cstdio.hpp index 79da4483d..66bbd69d4 100644 --- a/include/boost/decimal/cstdio.hpp +++ b/include/boost/decimal/cstdio.hpp @@ -180,7 +180,7 @@ inline auto snprintf_impl(char* buffer, const std::size_t buf_size, const char* { while (buffer < buffer_end && byte_count < format_size && *iter != '%') { - *buffer++ = *iter++; + ++iter; ++byte_count; } From 8575d58e5b2b5bb4fdc9464bc7f921dcb2724a43 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 13:36:46 +0200 Subject: [PATCH 192/967] Attempt cover construction from double NAN --- test/test_decimal64_fast_basis.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_decimal64_fast_basis.cpp b/test/test_decimal64_fast_basis.cpp index 120603d69..989cb7259 100644 --- a/test/test_decimal64_fast_basis.cpp +++ b/test/test_decimal64_fast_basis.cpp @@ -144,7 +144,7 @@ void test_non_finite_values() BOOST_TEST(isinf(detail::check_non_finite(one, std::numeric_limits::infinity() * dist(rng)))); BOOST_TEST(isinf(detail::check_non_finite(std::numeric_limits::infinity() * dist(rng), one))); - BOOST_TEST(isnan(decimal_fast64_t{std::numeric_limits::quiet_NaN()})); + BOOST_TEST(isnan(decimal_fast64_t{std::numeric_limits::quiet_NaN() * static_cast(dist(rng))})); } #if !defined(__GNUC__) || (__GNUC__ != 7 && __GNUC__ != 8) From 761d68b9c387dae2afe4b3c7f154c1338d7e0f91 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 13:42:00 +0200 Subject: [PATCH 193/967] Better coverage of decimal_fast64_t basis operations --- test/random_decimal64_fast_math.cpp | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/test/random_decimal64_fast_math.cpp b/test/random_decimal64_fast_math.cpp index 3ab3d929f..34493afc3 100644 --- a/test/random_decimal64_fast_math.cpp +++ b/test/random_decimal64_fast_math.cpp @@ -67,10 +67,10 @@ void random_addition(T lower, T upper) } } - BOOST_TEST(isinf(std::numeric_limits::infinity() + decimal_fast64_t{0,0})); - BOOST_TEST(isinf(decimal_fast64_t{0,0} + std::numeric_limits::infinity())); - BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() + decimal_fast64_t{0,0})); - BOOST_TEST(isnan(decimal_fast64_t{0,0} + std::numeric_limits::quiet_NaN())); + BOOST_TEST(isinf(std::numeric_limits::infinity() + decimal_fast64_t{0,0} * dist(rng))); + BOOST_TEST(isinf(decimal_fast64_t{0,0} * dist(rng) + std::numeric_limits::infinity())); + BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() + decimal_fast64_t{0,0} * dist(rng))); + BOOST_TEST(isnan(decimal_fast64_t{0,0} * dist(rng) + std::numeric_limits::quiet_NaN())); } template @@ -137,10 +137,10 @@ void random_subtraction(T lower, T upper) } } - BOOST_TEST(isinf(std::numeric_limits::infinity() - decimal_fast64_t{0,0})); - BOOST_TEST(isinf(decimal_fast64_t{0,0} - std::numeric_limits::infinity())); - BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() - decimal_fast64_t{0,0})); - BOOST_TEST(isnan(decimal_fast64_t{0,0} - std::numeric_limits::quiet_NaN())); + BOOST_TEST(isinf(std::numeric_limits::infinity() - decimal_fast64_t{0,0} * dist(rng))); + BOOST_TEST(isinf(decimal_fast64_t{0,0} * dist(rng) - std::numeric_limits::infinity())); + BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() - decimal_fast64_t{0,0} * dist(rng))); + BOOST_TEST(isnan(decimal_fast64_t{0,0} * dist(rng) - std::numeric_limits::quiet_NaN())); } template @@ -343,6 +343,7 @@ void random_division(T lower, T upper) BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() / decimal_fast64_t(dist(rng)))); BOOST_TEST(isnan(decimal_fast64_t(dist(rng)) / std::numeric_limits::quiet_NaN())); BOOST_TEST(isinf(decimal_fast64_t(dist(rng)) / decimal_fast64_t(0))); + BOOST_TEST(decimal_fast64_t{0} / dist(rng) == decimal_fast64_t{0}); } template From 7a45cad5d0d3ab2a585cd275517a10aa8e585afd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 14:00:45 +0200 Subject: [PATCH 194/967] Attempt cover construction from double nan --- test/test_decimal32_fast_basis.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/test/test_decimal32_fast_basis.cpp b/test/test_decimal32_fast_basis.cpp index e2760514c..e627e552f 100644 --- a/test/test_decimal32_fast_basis.cpp +++ b/test/test_decimal32_fast_basis.cpp @@ -163,6 +163,8 @@ void test_non_finite_values() BOOST_TEST(isnan(detail::check_non_finite(std::numeric_limits::quiet_NaN() * dist(rng), one))); BOOST_TEST(isinf(detail::check_non_finite(one, std::numeric_limits::infinity() * dist(rng)))); BOOST_TEST(isinf(detail::check_non_finite(std::numeric_limits::infinity() * dist(rng), one))); + + BOOST_TEST(isnan(decimal_fast32_t{std::numeric_limits::quiet_NaN() * dist(rng)})); } #if !defined(__GNUC__) || (__GNUC__ != 7 && __GNUC__ != 8) From 24a97f8a36434b04e11b3d5226cddabbe7a3839b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 14:44:47 +0200 Subject: [PATCH 195/967] False negative --- include/boost/decimal/decimal_fast32_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index ace3ed7b9..b697633eb 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1189,7 +1189,7 @@ template constexpr auto decimal_fast32_t::operator*=(const Integer rhs) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, decimal_fast32_t&) { - *this = *this * rhs; + *this = *this * rhs; // LCOV_EXCL_LINE : False negative return *this; } From f18417afc0abbb0a6dec897520f49f8992b38ba5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 14:44:58 +0200 Subject: [PATCH 196/967] Attempt better coverage of non-finite math --- test/random_decimal32_fast_math.cpp | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/test/random_decimal32_fast_math.cpp b/test/random_decimal32_fast_math.cpp index eb663c0e4..e748963d7 100644 --- a/test/random_decimal32_fast_math.cpp +++ b/test/random_decimal32_fast_math.cpp @@ -69,10 +69,10 @@ void random_addition(T lower, T upper) } } - BOOST_TEST(isinf(std::numeric_limits::infinity() + decimal_fast32_t{0,0})); - BOOST_TEST(isinf(decimal_fast32_t{0,0} + std::numeric_limits::infinity())); - BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() + decimal_fast32_t{0,0})); - BOOST_TEST(isnan(decimal_fast32_t{0,0} + std::numeric_limits::quiet_NaN())); + BOOST_TEST(isinf(std::numeric_limits::infinity() + decimal_fast32_t{0,0} * dist(rng))); + BOOST_TEST(isinf(decimal_fast32_t{0,0} * dist(rng) + std::numeric_limits::infinity())); + BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() + decimal_fast32_t{0,0} * dist(rng))); + BOOST_TEST(isnan(decimal_fast32_t{0,0} * dist(rng) + std::numeric_limits::quiet_NaN())); } template @@ -170,10 +170,11 @@ void random_subtraction(T lower, T upper) } } - BOOST_TEST(isinf(std::numeric_limits::infinity() - decimal_fast32_t{0,0})); - BOOST_TEST(isinf(decimal_fast32_t{0,0} - std::numeric_limits::infinity())); - BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() - decimal_fast32_t{0,0})); - BOOST_TEST(isnan(decimal_fast32_t{0,0} - std::numeric_limits::quiet_NaN())); + BOOST_TEST(isinf(std::numeric_limits::infinity() - decimal_fast32_t{0,0} * dist(rng))); + BOOST_TEST(isinf(decimal_fast32_t{0,0} * dist(rng) - std::numeric_limits::infinity())); + BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() - decimal_fast32_t{0,0} * dist(rng))); + BOOST_TEST(isnan(decimal_fast32_t{0,0} * dist(rng) - std::numeric_limits::quiet_NaN())); + BOOST_TEST(decimal_fast32_t(1000000, -103) - std::abs(dist(rng)) <= decimal_fast32_t(0)); } template From 1fde678231b5f85400146a6e870a7fc6aa36666f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 15:21:16 +0200 Subject: [PATCH 197/967] Exclude ifed out line --- include/boost/decimal/decimal_fast32_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index b697633eb..90b11681a 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -678,7 +678,7 @@ constexpr auto operator>=(const decimal_fast32_t lhs, const Integer rhs) noexcep #ifndef BOOST_DECIMAL_FAST_MATH return isnan(lhs) ? false : !(lhs < rhs); #else - return !(lhs < rhs); + return !(lhs < rhs); // LCOV_EXCL_LINE #endif } From 094568ee4c78bfc6e36598f84140a315cb21aca2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 15:45:28 +0200 Subject: [PATCH 198/967] Cover 80-bit clinger fast path completely --- test/test_float_conversion.cpp | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/test/test_float_conversion.cpp b/test/test_float_conversion.cpp index 0448b3fa5..fbbc7d41f 100644 --- a/test/test_float_conversion.cpp +++ b/test/test_float_conversion.cpp @@ -3,6 +3,7 @@ // https://www.boost.org/LICENSE_1_0.txt #include +#include #include #include #include @@ -62,7 +63,7 @@ void test_compute_float64() bool success {}; - // Trivial verifcation + // Trivial verification BOOST_TEST_EQ(compute_float64(1, dist(gen), false, success), 1e1); BOOST_TEST_EQ(compute_float64(0, dist(gen), true, success), -1e0); BOOST_TEST_EQ(compute_float64(308, dist(gen), false, success), 1e308); @@ -84,6 +85,20 @@ void test_compute_float64() BOOST_TEST_EQ(compute_float64(100 * static_cast(dist(gen)), UINT64_C(10000000000000000000), false, success), 10000000000000000000e100); } +void test_compute_float80_128() +{ + using boost::decimal::detail::fast_float::compute_float80_128; + + std::mt19937_64 gen(42); + std::uniform_int_distribution dist (1, 1); + + bool success {}; + + BOOST_TEST_EQ(compute_float80_128(1, dist(gen), false, success), 1e1L); + BOOST_TEST_EQ(compute_float80_128(0, dist(gen), true, success), -1e0L); + BOOST_TEST_EQ(compute_float80_128(-1, dist(gen), false, success), 1e-1L); +} + #ifdef __GNUC__ # pragma GCC diagnostic push # pragma GCC diagnostic ignored "-Wstrict-aliasing" @@ -325,6 +340,7 @@ int main() { test_compute_float32(); test_compute_float64(); + test_compute_float80_128(); test_generic_binary_to_decimal(); test_generic_binary_to_decimal(); test_generic_binary_to_decimal(); From 09c7f7e7271e927fdc6510b2e7189202cbac07c5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 15:50:47 +0200 Subject: [PATCH 199/967] Remove obsolete digit counting and testing --- .../decimal/detail/integer_search_trees.hpp | 228 ------------------ test/Jamfile | 1 - test/github_issue_893.cpp | 83 ------- 3 files changed, 312 deletions(-) delete mode 100644 test/github_issue_893.cpp diff --git a/include/boost/decimal/detail/integer_search_trees.hpp b/include/boost/decimal/detail/integer_search_trees.hpp index a1430b289..0209ac859 100644 --- a/include/boost/decimal/detail/integer_search_trees.hpp +++ b/include/boost/decimal/detail/integer_search_trees.hpp @@ -182,234 +182,6 @@ constexpr auto num_digits(const builtin_uint128_t& x) noexcept -> int #endif // Has int128 -// Specializations with pruned branches for constructors -// Since we already have partial information we can greatly speed things up in this case -template -constexpr auto d32_constructor_num_digits(T) noexcept -> std::enable_if_t::digits10 + 1 < 7, int> -{ - // Does not matter since it is guaranteed to fit - return 0; -} - -template -constexpr auto d32_constructor_num_digits(T x) noexcept -> std::enable_if_t<(std::numeric_limits::digits10 + 1 <= 10) && - (std::numeric_limits::digits10 + 1 > 7), int> -{ - BOOST_DECIMAL_ASSERT(x >= 10000000); - - if (x >= 100000000) - { - if (x >= 1000000000) - { - return 10; - } - return 9; - } - return 8; -} - -template -constexpr auto d32_constructor_num_digits(T x) noexcept -> std::enable_if_t<(std::numeric_limits::digits10 + 1 > 10) && - (std::numeric_limits::digits10 + 1 <= 20), int> -{ - // We already know that x >= 10000000 (7 digits) - BOOST_DECIMAL_ASSERT(x >= 10000000); - - if (x >= UINT64_C(10000000000)) - { - if (x >= UINT64_C(100000000000000)) - { - if (x >= UINT64_C(10000000000000000)) - { - if (x >= UINT64_C(100000000000000000)) - { - if (x >= UINT64_C(1000000000000000000)) - { - if (x >= UINT64_C(10000000000000000000)) - { - return 20; - } - return 19; - } - return 18; - } - return 17; - } - else if (x >= UINT64_C(1000000000000000)) - { - return 16; - } - return 15; - } - if (x >= UINT64_C(1000000000000)) - { - if (x >= UINT64_C(10000000000000)) - { - return 14; - } - return 13; - } - if (x >= UINT64_C(100000000000)) - { - return 12; - } - return 11; - } - else // 10000000 <= x < 10000000000 - { - if (x >= UINT64_C(100000000)) - { - if (x >= UINT64_C(1000000000)) - { - return 10; - } - return 9; - } - else // 10000000 <= x < 100000000 - { - return 8; - } - } -} - -template -constexpr auto d32_constructor_num_digits(T x) noexcept -> std::enable_if_t<(std::numeric_limits::digits10 + 1 > 20), int> -{ - // Anything bigger than uint64_t has no benefit so fall back to that - return num_digits(x); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 -constexpr auto d32_constructor_num_digits(builtin_uint128_t x) noexcept -> int -{ - return num_digits(x); -} -#endif - -template -constexpr auto d64_constructor_num_digits(T) noexcept -> std::enable_if_t<(std::numeric_limits::digits10 + 1 <= 16), int> -{ - return 0; -} - -template -constexpr auto d64_constructor_num_digits(T x) noexcept -> std::enable_if_t<(std::numeric_limits::digits10 + 1 > 16) && - (std::numeric_limits::digits10 <= 20), int> -{ - // Pre-condition: x >= 10^16 - BOOST_DECIMAL_ASSERT(x >= UINT64_C(10000000000000000)); - - if (x >= UINT64_C(100000000000000000)) - { - if (x >= UINT64_C(1000000000000000000)) - { - if (x >= UINT64_C(10000000000000000000)) - { - return 20; - } - return 19; - } - return 18; - } - return 17; -} - -template -constexpr auto d64_constructor_num_digits(T x) noexcept -> std::enable_if_t::digits10 >= 20, int> -{ - return num_digits(x); -} - -#ifdef BOOST_DECIMAL_HAS_INT128 -constexpr auto d64_constructor_num_digits(builtin_uint128_t x) noexcept -> int -{ - return num_digits(x); -} -#endif - -template -constexpr auto d128_constructor_num_digits(T) noexcept -> std::enable_if_t::digits10 + 1 <= 34, int> -{ - return 0; -} - -#ifdef BOOST_DECIMAL_HAS_INT128 -constexpr auto d128_constructor_num_digits(builtin_uint128_t x) noexcept -> int -{ - // Pre-condition: we know x has at least 34 digits - BOOST_DECIMAL_ASSERT(x >= detail::pow10(static_cast(33))); - - constexpr auto digits35 {detail::pow10(static_cast(34))}; - constexpr auto digits36 {detail::pow10(static_cast(35))}; - constexpr auto digits37 {detail::pow10(static_cast(36))}; - constexpr auto digits38 {detail::pow10(static_cast(37))}; - constexpr auto digits39 {detail::pow10(static_cast(38))}; - - if (x >= digits38) - { - if (x >= digits39) - { - return 39; - } - return 38; - } - if (x >= digits36) - { - if (x >= digits37) - { - return 37; - } - return 36; - } - if (x >= digits35) - { - return 35; - } - - return 34; // Since we know x has at least 34 digits -} -#endif - -constexpr auto d128_constructor_num_digits(const boost::int128::uint128_t x) noexcept -> int -{ - // Pre-condition: we know x has at least 34 digits - BOOST_DECIMAL_ASSERT(x >= detail::pow10(static_cast(33))); - - // Since we know that x has at least 34 digits we can get away with just comparing the high bits, - // which reduces these to uint64_t comps instead of synthesized 128-bit - - constexpr auto digits35 {detail::pow10(static_cast(34)).high}; - constexpr auto digits36 {detail::pow10(static_cast(35)).high}; - constexpr auto digits37 {detail::pow10(static_cast(36)).high}; - constexpr auto digits38 {detail::pow10(static_cast(37)).high}; - constexpr auto digits39 {detail::pow10(static_cast(38)).high}; - - const auto x_high {x.high}; - - if (x_high >= digits38) - { - if (x_high >= digits39) - { - return 39; - } - return 38; - } - if (x_high >= digits36) - { - if (x_high >= digits37) - { - return 37; - } - return 36; - } - if (x_high >= digits35) - { - return 35; - } - - return 34; // Since we know x has at least 34 digits -} - } // namespace detail } // namespace decimal } // namespace boost diff --git a/test/Jamfile b/test/Jamfile index d1e6fb780..99ee847fe 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -58,7 +58,6 @@ run github_issue_802.cpp ; run github_issue_805.cpp ; run github_issue_808.cpp ; run github_issue_890.cpp ; -run github_issue_893.cpp ; run github_issue_900.cpp ; run github_issue_911.cpp ; run github_issue_988.cpp ; diff --git a/test/github_issue_893.cpp b/test/github_issue_893.cpp deleted file mode 100644 index 92366052a..000000000 --- a/test/github_issue_893.cpp +++ /dev/null @@ -1,83 +0,0 @@ -// Copyright 2025 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt -// -// See: https://github.com/cppalliance/decimal/issues/893 - -#include -#include -#include - -void test_32() -{ - const std::array comp_values = { - UINT64_C(12345678), - UINT64_C(123456789), - UINT64_C(1234567890), - }; - - int res {8}; - - for (const auto& value : comp_values) - { - BOOST_TEST_EQ(boost::decimal::detail::num_digits(value), res); - BOOST_TEST_EQ(boost::decimal::detail::d32_constructor_num_digits(value), res++); - } -} - -void test_64() -{ - const std::array comp_values = { - UINT64_C(12345678901234567), - UINT64_C(123456789012345678), - UINT64_C(1234567890123456789), - UINT64_C(12345678901234567890), - }; - - int res {17}; - - for (const auto& value : comp_values) - { - BOOST_TEST_EQ(boost::decimal::detail::num_digits(value), res); - BOOST_TEST_EQ(boost::decimal::detail::d64_constructor_num_digits(value), res++); - } -} - -void test_128() -{ - const std::array comp_values = { - BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1234567890123456789012345678901234), - BOOST_DECIMAL_DETAIL_INT128_UINT128_C(12345678901234567890123456789012345), - BOOST_DECIMAL_DETAIL_INT128_UINT128_C(123456789012345678901234567890123456), - BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1234567890123456789012345678901234567), - BOOST_DECIMAL_DETAIL_INT128_UINT128_C(12345678901234567890123456789012345678), - BOOST_DECIMAL_DETAIL_INT128_UINT128_C(123456789012345678901234567890123456789), - }; - - int res {34}; - for (const auto& value : comp_values) - { - BOOST_TEST_EQ(boost::decimal::detail::num_digits(value), res); - BOOST_TEST_EQ(boost::decimal::detail::d128_constructor_num_digits(value), res++); - } - - #ifdef BOOST_DECIMAL_HAS_INT128 - - res = 34; - for (const auto& value : comp_values) - { - BOOST_TEST_EQ(boost::decimal::detail::num_digits(static_cast(value)), res); - BOOST_TEST_EQ(boost::decimal::detail::d128_constructor_num_digits(static_cast(value)), res++); - } - - #endif -} - -int main() -{ - test_32(); - test_64(); - test_128(); - - return boost::report_errors(); -} From 0e70e6f85ffe252952f386ffbf7cad72bfce7104 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 15:52:30 +0200 Subject: [PATCH 200/967] Revert change --- include/boost/decimal/cstdio.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/cstdio.hpp b/include/boost/decimal/cstdio.hpp index 66bbd69d4..79da4483d 100644 --- a/include/boost/decimal/cstdio.hpp +++ b/include/boost/decimal/cstdio.hpp @@ -180,7 +180,7 @@ inline auto snprintf_impl(char* buffer, const std::size_t buf_size, const char* { while (buffer < buffer_end && byte_count < format_size && *iter != '%') { - ++iter; + *buffer++ = *iter++; ++byte_count; } From 3940827a1ef21eea61184a12ac9f411da520f68a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 22 Sep 2025 15:56:58 +0200 Subject: [PATCH 201/967] Add testing of leading whitespaces --- test/test_snprintf.cpp | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/test/test_snprintf.cpp b/test/test_snprintf.cpp index 11488c9a2..f0aa0d3d6 100644 --- a/test/test_snprintf.cpp +++ b/test/test_snprintf.cpp @@ -45,12 +45,20 @@ void test(T value, const char* format_sprintf, chars_format fmt = chars_format:: char buffer[256]; errno = 0; - int num_bytes = boost::decimal::snprintf(buffer, sizeof(buffer), format_sprintf, value); + const int num_bytes = boost::decimal::snprintf(buffer, sizeof(buffer), format_sprintf, value); BOOST_TEST_EQ(errno, 0); - char charconv_buffer[256]; - auto r = to_chars(charconv_buffer, charconv_buffer + sizeof(charconv_buffer), value, fmt, precision); + char charconv_buffer[256] {}; + auto first = charconv_buffer; + auto format_first = format_sprintf; + + while (*format_first != '%') + { + *first++ = *format_first++; + } + + auto r = to_chars(first, charconv_buffer + sizeof(charconv_buffer), value, fmt, precision); BOOST_TEST(r); *r.ptr = '\0'; From bb1910c38c89e44f02a1991e8f55292805d2e09e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 08:15:18 +0200 Subject: [PATCH 202/967] Don't cover int128 --- codecov.yml | 1 + 1 file changed, 1 insertion(+) diff --git a/codecov.yml b/codecov.yml index bbdf35af5..e37fe9c16 100644 --- a/codecov.yml +++ b/codecov.yml @@ -33,4 +33,5 @@ comment: ignore: # This is covered here: https://github.com/cppalliance/int128 + - include/boost/decimal/detail/int128/** - include/boost/decimal/detail/int128/* From cfa4f40a3badccc81e4b567d2571851c0d876a73 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 08:25:07 +0200 Subject: [PATCH 203/967] Add 128-bit addition to test set --- test/github_issue_1035.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/test/github_issue_1035.cpp b/test/github_issue_1035.cpp index cd085d22d..e356c103e 100644 --- a/test/github_issue_1035.cpp +++ b/test/github_issue_1035.cpp @@ -23,11 +23,13 @@ int main() BOOST_TEST_EQ("5e+50"_DF - "4e+40"_DF, "4.999999e+50"_DF); BOOST_TEST_EQ("5e+95"_DF - "4e-100"_DF, "4.999999e+95"_DF); BOOST_TEST_EQ("-5e+95"_DF + "4e-100"_DF, "-4.999999e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DL + "4e-100"_DL, "-4.999999999999999999999999999999999e+95"_DL); fesetround(rounding_mode::fe_dec_upward); BOOST_TEST_EQ("5e+50"_DF + "4e+40"_DF, "5.000001e+50"_DF); BOOST_TEST_EQ("5e+95"_DF + "4e-100"_DF, "5.000001e+95"_DF); BOOST_TEST_EQ("-5e+95"_DF - "4e-100"_DF, "-5.000001e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DL - "4e-100"_DL, "-5.000000000000000000000000000000001e+95"_DL); return boost::report_errors(); From 258ac98b3ce273caefaf28c9709bdc249f781370 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 08:47:28 +0200 Subject: [PATCH 204/967] Remove unreachable code path --- include/boost/decimal/detail/check_non_finite.hpp | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/check_non_finite.hpp b/include/boost/decimal/detail/check_non_finite.hpp index ec20a207e..702bd648b 100644 --- a/include/boost/decimal/detail/check_non_finite.hpp +++ b/include/boost/decimal/detail/check_non_finite.hpp @@ -21,8 +21,6 @@ template constexpr auto check_non_finite(Decimal lhs, Decimal rhs) noexcept -> std::enable_if_t, Decimal> { - constexpr Decimal zero {0, 0}; - if (isnan(lhs)) { return lhs; @@ -36,12 +34,11 @@ constexpr auto check_non_finite(Decimal lhs, Decimal rhs) noexcept { return lhs; } - else if (isinf(rhs)) + else { + BOOST_DECIMAL_ASSERT(isinf(rhs)); return rhs; } - - return zero; } } //namespace detail From 332a9d2e8e9d5e1c05ac0e1f908a40c9a046ea81 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 10:05:58 +0200 Subject: [PATCH 205/967] Remove duplicated checks --- .../decimal/detail/to_chars_integer_impl.hpp | 27 +++---------------- 1 file changed, 3 insertions(+), 24 deletions(-) diff --git a/include/boost/decimal/detail/to_chars_integer_impl.hpp b/include/boost/decimal/detail/to_chars_integer_impl.hpp index d2bd6e9c0..8060b2f54 100644 --- a/include/boost/decimal/detail/to_chars_integer_impl.hpp +++ b/include/boost/decimal/detail/to_chars_integer_impl.hpp @@ -50,17 +50,6 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_integer_impl(char* first, char* last, Inte { const std::ptrdiff_t output_length = last - first; - if (!((first <= last) && (base >= 2 && base <= 36))) - { - return {last, std::errc::invalid_argument}; - } - - if (value == 0U) - { - *first++ = '0'; - return {first, std::errc()}; - } - Unsigned_Integer unsigned_value {}; BOOST_DECIMAL_IF_CONSTEXPR (std::is_signed::value) @@ -161,11 +150,6 @@ constexpr to_chars_result to_chars_integer_impl(char* first, char* last, Integer int converted_value_digits {}; bool is_negative = false; - if (first > last) - { - return {last, std::errc::invalid_argument}; - } - // Strip the sign from the value and apply at the end after parsing if the type is signed BOOST_DECIMAL_IF_CONSTEXPR (is_signed_v) { @@ -289,11 +273,6 @@ constexpr to_chars_result to_chars_integer_impl(char* first, char* last, Integer const std::ptrdiff_t user_buffer_size = last - first; BOOST_DECIMAL_ATTRIBUTE_UNUSED bool is_negative = false; - if (first > last) - { - return {last, std::errc::invalid_argument}; - } - // Strip the sign from the value and apply at the end after parsing if the type is signed BOOST_DECIMAL_IF_CONSTEXPR (std::numeric_limits::is_signed #ifdef BOOST_DECIMAL_HAS_INT128 @@ -372,8 +351,8 @@ constexpr to_chars_result to_chars_integer_impl(char* first, char* last, Integer #pragma GCC diagnostic pop #endif -} -} -} +} // namespace detail +} // namespace decimal +} // namespace boost #endif //BOOST_TO_CHARS_INTEGER_IMPL_HPP From 1bb3b32d897c80f0444107ba2d332230d3bb6dd0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 10:23:36 +0200 Subject: [PATCH 206/967] Add const --- include/boost/decimal/detail/to_chars_integer_impl.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/to_chars_integer_impl.hpp b/include/boost/decimal/detail/to_chars_integer_impl.hpp index 8060b2f54..eddd7e3a0 100644 --- a/include/boost/decimal/detail/to_chars_integer_impl.hpp +++ b/include/boost/decimal/detail/to_chars_integer_impl.hpp @@ -322,7 +322,7 @@ constexpr to_chars_result to_chars_integer_impl(char* first, char* last, Integer while (converted_value != 0U) { - auto digits = static_cast(converted_value % ten_9); + const auto digits = static_cast(converted_value % ten_9); num_chars[i] = num_digits(digits); decompose32(digits, buffer[i]); // Always returns 10 digits (to include leading 0s) which we want converted_value = (converted_value - digits) / ten_9; From a0f4ceab6eb2c988a3a3ebced96dc2b2bd63150e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 10:25:32 +0200 Subject: [PATCH 207/967] Ignore assert coverage --- include/boost/decimal/detail/u256.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/u256.hpp b/include/boost/decimal/detail/u256.hpp index b3564e21d..f65ac96bb 100644 --- a/include/boost/decimal/detail/u256.hpp +++ b/include/boost/decimal/detail/u256.hpp @@ -961,7 +961,7 @@ constexpr std::size_t div_to_words(const boost::int128::uint128_t& x, std::uint3 words[3] = static_cast(static_cast(x.high) >> 32); // LCOV_EXCL_LINE } - BOOST_DECIMAL_DETAIL_INT128_ASSERT_MSG(x != 0U, "Division by 0"); + BOOST_DECIMAL_DETAIL_INT128_ASSERT_MSG(x != 0U, "Division by 0"); // LCOV_EXCL_LINE : False Negative std::size_t word_count {4}; while (words[word_count - 1U] == 0U) From d6d0ad68758c0144cb5743614fb03ad40326f48a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 10:25:46 +0200 Subject: [PATCH 208/967] Cover division by zero path --- test/random_decimal128_fast_math.cpp | 1 + 1 file changed, 1 insertion(+) diff --git a/test/random_decimal128_fast_math.cpp b/test/random_decimal128_fast_math.cpp index 529340cba..e48b9ab77 100644 --- a/test/random_decimal128_fast_math.cpp +++ b/test/random_decimal128_fast_math.cpp @@ -433,6 +433,7 @@ void random_mixed_division(T lower, T upper) BOOST_TEST(isnan(dist(rng) / std::numeric_limits::quiet_NaN() * T(dist(rng)))); BOOST_TEST_EQ(abs(dist(rng) / std::numeric_limits::infinity() * T(dist(rng))), zero); BOOST_TEST(isinf(decimal_fast128_t(dist(rng)) / 0 * dist(rng))); + BOOST_TEST(isinf(dist(rng) / zero)); BOOST_TEST(isinf(val1 / zero)); BOOST_TEST(T{0} / val1 == zero); From 82cf0f34f7e0c2bffdb623ee20fbd78b51442c55 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 10:27:08 +0200 Subject: [PATCH 209/967] Cover compound mul --- test/random_decimal128_fast_math.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/random_decimal128_fast_math.cpp b/test/random_decimal128_fast_math.cpp index e48b9ab77..19d96fe89 100644 --- a/test/random_decimal128_fast_math.cpp +++ b/test/random_decimal128_fast_math.cpp @@ -302,6 +302,11 @@ void random_mixed_multiplication(T lower, T upper) BOOST_TEST(isinf(dist(rng) * std::numeric_limits::infinity() * T(dist(rng)))); BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() * T(dist(rng)) * dist(rng))); BOOST_TEST(isnan(dist(rng) * std::numeric_limits::quiet_NaN() * T(dist(rng)))); + + const auto value {dist(rng)}; + decimal_fast128_t one_mul {1}; + one_mul *= value; + BOOST_TEST(one_mul == value); } template From 8900335e4ec6cd50b80d8a3c035e454a8909f667 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 11:08:22 +0200 Subject: [PATCH 210/967] Fix unused paratmeter warning --- include/boost/decimal/detail/to_chars_integer_impl.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/to_chars_integer_impl.hpp b/include/boost/decimal/detail/to_chars_integer_impl.hpp index eddd7e3a0..3d4676f90 100644 --- a/include/boost/decimal/detail/to_chars_integer_impl.hpp +++ b/include/boost/decimal/detail/to_chars_integer_impl.hpp @@ -45,7 +45,7 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE char digit_table[] = { // Use a simple lookup table to put together the Integer in character form template -BOOST_DECIMAL_CONSTEXPR auto to_chars_integer_impl(char* first, char* last, Integer value, int base) noexcept +BOOST_DECIMAL_CONSTEXPR auto to_chars_integer_impl(char* first, char* last, Integer value, int) noexcept BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_integral_v, Integer, detail::is_integral_v, Unsigned_Integer, to_chars_result) { const std::ptrdiff_t output_length = last - first; From 65344891797bcd67180d0598ad9e82d4d3332234 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 17:03:13 +0200 Subject: [PATCH 211/967] Begin testing of regular tests using the module --- modules/Jamfile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/modules/Jamfile b/modules/Jamfile index 307799288..66af016ab 100644 --- a/modules/Jamfile +++ b/modules/Jamfile @@ -22,8 +22,10 @@ project gcc:23 clang:23 + BOOST_DECIMAL_USE_MODULE ; obj decimal : decimal.cxx : msvc:-interface ; run quick_test.cpp decimal : : : decimal ; +run ../test/github_issue_448.cpp decimal : : : decimal ; From 5079cb911979abaf3379c0fb1003b6a555a0570f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 17:09:30 +0200 Subject: [PATCH 212/967] Fix ambiguous error for countl_zero of 128-bit types --- include/boost/decimal/charconv.hpp | 2 +- include/boost/decimal/detail/countl.hpp | 9 ++++++++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 605a33998..192589948 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1023,7 +1023,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_hex_impl(char* first, char* last, const Ta // Calculate the number of bytes constexpr auto significand_bits = std::is_same::value ? 64 : 128; - auto significand_digits = static_cast((static_cast(significand_bits - countl_zero(significand) + 1) / 4)); + auto significand_digits = static_cast((static_cast(significand_bits - detail::countl_zero(significand) + 1) / 4)); bool append_zeros = false; if (local_precision != -1) diff --git a/include/boost/decimal/detail/countl.hpp b/include/boost/decimal/detail/countl.hpp index 21bb76360..fe9fd5073 100644 --- a/include/boost/decimal/detail/countl.hpp +++ b/include/boost/decimal/detail/countl.hpp @@ -9,6 +9,7 @@ #include #ifndef BOOST_DECIMAL_BUILD_MODULE +#include "int128.hpp" #include #include #endif @@ -92,12 +93,18 @@ constexpr int countl_impl(T x) noexcept template constexpr int countl_zero(T x) noexcept { - static_assert(std::numeric_limits::is_integer && !std::numeric_limits::is_signed, + static_assert(std::is_integral::value && !std::numeric_limits::is_signed, "Can only count with unsigned integers"); return impl::countl_impl(x); } +template <> +constexpr int countl_zero(const int128::uint128_t x) noexcept +{ + return int128::countl_zero(x); +} + } //namespace detail } //namespace decimal } //namespace boost From 6ed3cef3dcfe9e00fbe8246e4be8ad421e10a384 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 23 Sep 2025 17:09:50 +0200 Subject: [PATCH 213/967] Test using the module --- test/github_issue_448.cpp | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/test/github_issue_448.cpp b/test/github_issue_448.cpp index 917918eac..837c56f58 100644 --- a/test/github_issue_448.cpp +++ b/test/github_issue_448.cpp @@ -4,11 +4,20 @@ // // See: https://github.com/cppalliance/decimal/issues/448 -#include #include + +#ifdef BOOST_DECIMAL_USE_MODULE + +import boost.decimal; + +#else + +#include #include #include +#endif + #if defined(__GNUC__) && __GNUC__ >= 8 # pragma GCC diagnostic push # pragma GCC diagnostic ignored "-Wclass-memaccess" From 889b1deffc079470c9e68ab869e46d7ccad714fc Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 10:45:25 +0200 Subject: [PATCH 214/967] Add further modules tests --- modules/Jamfile | 6 ++++++ test/github_issue_798.cpp | 7 +++++++ test/github_issue_799.cpp | 7 +++++++ test/github_issue_802.cpp | 7 +++++++ test/github_issue_805.cpp | 7 +++++++ test/github_issue_808.cpp | 8 ++++++++ test/github_issue_890.cpp | 9 ++++++++- test/github_issue_900.cpp | 8 ++++++++ 8 files changed, 58 insertions(+), 1 deletion(-) diff --git a/modules/Jamfile b/modules/Jamfile index 66af016ab..4a68f6a0f 100644 --- a/modules/Jamfile +++ b/modules/Jamfile @@ -29,3 +29,9 @@ obj decimal : decimal.cxx : msvc:-interface ; run quick_test.cpp decimal : : : decimal ; run ../test/github_issue_448.cpp decimal : : : decimal ; +run ../test/github_issue_798.cpp decimal : : : decimal ; +run ../test/github_issue_802.cpp decimal : : : decimal ; +run ../test/github_issue_805.cpp decimal : : : decimal ; +run ../test/github_issue_808.cpp decimal : : : decimal ; +run ../test/github_issue_890.cpp decimal : : : decimal ; +run ../test/github_issue_900.cpp decimal : : : decimal ; diff --git a/test/github_issue_798.cpp b/test/github_issue_798.cpp index e6a831726..45aaa03c1 100644 --- a/test/github_issue_798.cpp +++ b/test/github_issue_798.cpp @@ -3,12 +3,19 @@ // Boost Software License, Version 1.0. (See accompanying file // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include #include #include #include +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif + template void test_zero() { diff --git a/test/github_issue_799.cpp b/test/github_issue_799.cpp index 8aad70bea..ed23e58a1 100644 --- a/test/github_issue_799.cpp +++ b/test/github_issue_799.cpp @@ -2,10 +2,17 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include #include +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif + #ifdef BOOST_DECIMAL_HAS_INT128 template diff --git a/test/github_issue_802.cpp b/test/github_issue_802.cpp index 54c67d5c7..fe459f2a5 100644 --- a/test/github_issue_802.cpp +++ b/test/github_issue_802.cpp @@ -2,10 +2,17 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include #include +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif + void fasting() { using namespace boost::decimal; diff --git a/test/github_issue_805.cpp b/test/github_issue_805.cpp index 7323793f9..af5ee0847 100644 --- a/test/github_issue_805.cpp +++ b/test/github_issue_805.cpp @@ -2,10 +2,17 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include #include +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif + using namespace boost::decimal; template diff --git a/test/github_issue_808.cpp b/test/github_issue_808.cpp index d80f3fe84..35e74a6d8 100644 --- a/test/github_issue_808.cpp +++ b/test/github_issue_808.cpp @@ -2,8 +2,16 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif using namespace boost::decimal; diff --git a/test/github_issue_890.cpp b/test/github_issue_890.cpp index 49ef228f5..1f75e63f2 100644 --- a/test/github_issue_890.cpp +++ b/test/github_issue_890.cpp @@ -2,9 +2,16 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include -#include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif #if BOOST_DECIMAL_ENDIAN_LITTLE_BYTE diff --git a/test/github_issue_900.cpp b/test/github_issue_900.cpp index 4813d5736..1f78a8314 100644 --- a/test/github_issue_900.cpp +++ b/test/github_issue_900.cpp @@ -2,8 +2,16 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif using namespace boost::decimal; From 2e41f94e71e489ded67df9c24a2fb4d946c9cf19 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 12:10:42 +0200 Subject: [PATCH 215/967] Add additional tests to jamfile --- modules/Jamfile | 6 ++++++ test/github_issue_1026.cpp | 9 ++++++++- test/github_issue_1035.cpp | 8 ++++++++ test/github_issue_1054.cpp | 8 ++++++++ test/github_issue_1055.cpp | 8 ++++++++ test/github_issue_1057.cpp | 8 ++++++++ test/github_issue_988.cpp | 8 ++++++++ 7 files changed, 54 insertions(+), 1 deletion(-) diff --git a/modules/Jamfile b/modules/Jamfile index 4a68f6a0f..74c7cf791 100644 --- a/modules/Jamfile +++ b/modules/Jamfile @@ -35,3 +35,9 @@ run ../test/github_issue_805.cpp decimal : : : decimal ; run ../test/github_issue_808.cpp decimal : : : decimal ; run ../test/github_issue_890.cpp decimal : : : decimal ; run ../test/github_issue_900.cpp decimal : : : decimal ; +run ../test/github_issue_988.cpp decimal : : : decimal ; +run ../test/github_issue_1026.cpp decimal : : : decimal ; +run ../test/github_issue_1035.cpp decimal : : : decimal ; +run ../test/github_issue_1054.cpp decimal : : : decimal ; +run ../test/github_issue_1055.cpp decimal : : : decimal ; +run ../test/github_issue_1057.cpp decimal : : : decimal ; diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index 22dea9154..e82d2c00c 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -4,9 +4,16 @@ // // See: https://github.com/cppalliance/decimal/issues/1026 +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include -#include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif using namespace boost::decimal; using namespace boost::decimal::literals; diff --git a/test/github_issue_1035.cpp b/test/github_issue_1035.cpp index e356c103e..90d3774fc 100644 --- a/test/github_issue_1035.cpp +++ b/test/github_issue_1035.cpp @@ -4,8 +4,16 @@ // // See: https://github.com/cppalliance/decimal/issues/1035 +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif using namespace boost::decimal; using namespace boost::decimal::literals; diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp index ee1c2b3aa..43714d68f 100644 --- a/test/github_issue_1054.cpp +++ b/test/github_issue_1054.cpp @@ -9,8 +9,16 @@ # pragma GCC diagnostic ignored "-Wmaybe-uninitialized" #endif +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif using namespace boost::decimal; diff --git a/test/github_issue_1055.cpp b/test/github_issue_1055.cpp index 87f0baf41..6300a6b7f 100644 --- a/test/github_issue_1055.cpp +++ b/test/github_issue_1055.cpp @@ -4,8 +4,16 @@ // // See: https://github.com/cppalliance/decimal/issues/1055 +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif using namespace boost::decimal; diff --git a/test/github_issue_1057.cpp b/test/github_issue_1057.cpp index 97bff3cee..9a7cb3dfd 100644 --- a/test/github_issue_1057.cpp +++ b/test/github_issue_1057.cpp @@ -4,8 +4,16 @@ // // See: https://github.com/cppalliance/decimal/issues/1057 +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif template void convert_leading_plus_by_strtod() diff --git a/test/github_issue_988.cpp b/test/github_issue_988.cpp index 626486b7f..cec1a313c 100644 --- a/test/github_issue_988.cpp +++ b/test/github_issue_988.cpp @@ -4,8 +4,16 @@ // // See: https://github.com/cppalliance/decimal/issues/988 +#ifndef BOOST_DECIMAL_USE_MODULE #include +#endif + #include +#include + +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif using namespace boost::decimal; From 64a838ae7ed6ffc7e7af67be030acdcb7b43c0e4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 12:11:20 +0200 Subject: [PATCH 216/967] Improve method of ingesting characters in istream --- include/boost/decimal/detail/io.hpp | 37 ++++++++++++++++++++++------- modules/decimal.cxx | 1 + 2 files changed, 29 insertions(+), 9 deletions(-) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index 4afacb429..a08997be7 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -26,6 +26,7 @@ #include #include #include +#include #endif namespace boost { @@ -36,18 +37,36 @@ BOOST_DECIMAL_EXPORT template >(std::basic_istream& is, DecimalType& d) -> std::enable_if_t, std::basic_istream&> { - charT t_buffer[1024] {}; // What should be an unreasonably high maximum - is >> std::setw(1023) >> t_buffer; + constexpr std::size_t static_buffer_size {1024U}; - const auto t_buffer_len {std::char_traits::length(t_buffer)}; + std::basic_string t_buffer; + is >> t_buffer; - char buffer[1024] {}; + const auto t_buffer_len {t_buffer.length()}; + + char static_buffer[static_buffer_size] {}; + std::unique_ptr longer_char_buffer {nullptr}; + char* buffer {static_buffer}; + + if (BOOST_DECIMAL_UNLIKELY(t_buffer_len > static_buffer_size)) + { + // LCOV_EXCL_START + longer_char_buffer = std::unique_ptr(new(std::nothrow) char[t_buffer_len]); + if (longer_char_buffer.get() == nullptr) + { + errno = ENOMEM; + return is; + } + + buffer = longer_char_buffer.get(); + // LCOV_EXCL_STOP + } BOOST_DECIMAL_IF_CONSTEXPR (!std::is_same::value) { - auto first = buffer; - auto t_first = t_buffer; - auto t_buffer_end = t_buffer + std::strlen(t_buffer); + auto first {buffer}; + auto t_first {t_buffer.begin()}; + auto t_buffer_end {t_buffer.end()}; while (t_first != t_buffer_end) { @@ -56,12 +75,12 @@ auto operator>>(std::basic_istream& is, DecimalType& d) } else { - std::memcpy(buffer, t_buffer, sizeof(t_buffer)); + std::memcpy(buffer, t_buffer.c_str(), t_buffer.size()); } detail::convert_string_to_c_locale(buffer); - chars_format fmt = chars_format::general; + auto fmt {chars_format::general}; const auto flags {is.flags()}; if (flags & std::ios_base::scientific) { diff --git a/modules/decimal.cxx b/modules/decimal.cxx index 5f5c1b203..d77f323f2 100644 --- a/modules/decimal.cxx +++ b/modules/decimal.cxx @@ -31,6 +31,7 @@ module; #include #include #include +#include // is a C++23 feature that is not everywhere yet #if __has_include() From 1a3d267a8192b84640e781e45a70c923c7c6eb1a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 12:48:14 +0200 Subject: [PATCH 217/967] Modularize and fix use of macros --- modules/Jamfile | 3 +++ test/random_decimal32_comp.cpp | 22 ++++++++++++++-------- 2 files changed, 17 insertions(+), 8 deletions(-) diff --git a/modules/Jamfile b/modules/Jamfile index 74c7cf791..d5a7d79a2 100644 --- a/modules/Jamfile +++ b/modules/Jamfile @@ -28,6 +28,7 @@ project obj decimal : decimal.cxx : msvc:-interface ; run quick_test.cpp decimal : : : decimal ; + run ../test/github_issue_448.cpp decimal : : : decimal ; run ../test/github_issue_798.cpp decimal : : : decimal ; run ../test/github_issue_802.cpp decimal : : : decimal ; @@ -41,3 +42,5 @@ run ../test/github_issue_1035.cpp decimal : : : decimal ; run ../test/github_issue_1054.cpp decimal : : : decimal ; run ../test/github_issue_1055.cpp decimal : : : decimal ; run ../test/github_issue_1057.cpp decimal : : : decimal ; + +run ../test/random_decimal32_comp.cpp decimal : : : decimal ; diff --git a/test/random_decimal32_comp.cpp b/test/random_decimal32_comp.cpp index f5a743d8f..25c3f25fd 100644 --- a/test/random_decimal32_comp.cpp +++ b/test/random_decimal32_comp.cpp @@ -2,13 +2,19 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#include -#include -#include +#ifndef BOOST_DECIMAL_USE_MODULE +#include +#endif + #include +#include #include #include +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif + using namespace boost::decimal; #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) @@ -100,9 +106,9 @@ void random_mixed_LT(T lower, T upper) BOOST_TEST_EQ(decimal32_t(10) < T(10), false); BOOST_TEST_EQ(T(1) < decimal32_t(1), false); BOOST_TEST_EQ(T(10) < decimal32_t(10), false); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_INFINITY < T(1), false); - BOOST_TEST_EQ(-BOOST_DECIMAL_DEC_INFINITY < T(1), true); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_NAN < T(1), false); + BOOST_TEST_EQ(std::numeric_limits::infinity() < T(1), false); + BOOST_TEST_EQ(-std::numeric_limits::infinity() < T(1), true); + BOOST_TEST_EQ(std::numeric_limits::quiet_NaN() < T(1), false); } template @@ -377,8 +383,8 @@ void random_mixed_EQ(T lower, T upper) BOOST_TEST_EQ(decimal32_t(1000), T(1000)); BOOST_TEST_EQ(decimal32_t(10000), T(10000)); BOOST_TEST_EQ(decimal32_t(100000), T(100000)); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_NAN == T(1), false); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_INFINITY == T(1), false); + BOOST_TEST_EQ(std::numeric_limits::quiet_NaN() == T(1), false); + BOOST_TEST_EQ(std::numeric_limits::infinity() == T(1), false); } template From 90b6693971941eff8d9e5a3bfbcaa388d55dec66 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 13:13:32 +0200 Subject: [PATCH 218/967] Decimal32_fast tests --- modules/Jamfile | 2 ++ test/random_decimal32_fast_comp.cpp | 22 ++++++++++++++-------- test/random_decimal32_fast_math.cpp | 10 ++++++++-- 3 files changed, 24 insertions(+), 10 deletions(-) diff --git a/modules/Jamfile b/modules/Jamfile index d5a7d79a2..a8dc5cd51 100644 --- a/modules/Jamfile +++ b/modules/Jamfile @@ -44,3 +44,5 @@ run ../test/github_issue_1055.cpp decimal : : : decimal ; run ../test/github_issue_1057.cpp decimal : : : decimal ; run ../test/random_decimal32_comp.cpp decimal : : : decimal ; +run ../test/random_decimal32_fast_comp.cpp decimal : : : decimal ; +run ../test/random_decimal32_fast_math.cpp decimal : : : decimal ; diff --git a/test/random_decimal32_fast_comp.cpp b/test/random_decimal32_fast_comp.cpp index 32db000a2..ae010a137 100644 --- a/test/random_decimal32_fast_comp.cpp +++ b/test/random_decimal32_fast_comp.cpp @@ -2,13 +2,19 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#include -#include -#include +#ifndef BOOST_DECIMAL_USE_MODULE +#include +#endif + #include +#include #include #include +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif + using namespace boost::decimal; #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) @@ -106,9 +112,9 @@ void random_mixed_LT(T lower, T upper) BOOST_TEST_EQ(decimal_fast32_t(10) < T(10), false); BOOST_TEST_EQ(T(1) < decimal_fast32_t(1), false); BOOST_TEST_EQ(T(10) < decimal_fast32_t(10), false); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_INFINITY < T(1), false); - BOOST_TEST_EQ(-BOOST_DECIMAL_DEC_INFINITY < T(1), true); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_NAN < T(1), false); + BOOST_TEST_EQ(std::numeric_limits::infinity() < T(1), false); + BOOST_TEST_EQ(-std::numeric_limits::infinity() < T(1), true); + BOOST_TEST_EQ(std::numeric_limits::quiet_NaN() < T(1), false); } template @@ -376,8 +382,8 @@ void random_mixed_EQ(T lower, T upper) BOOST_TEST_EQ(decimal_fast32_t(1000), T(1000)); BOOST_TEST_EQ(decimal_fast32_t(10000), T(10000)); BOOST_TEST_EQ(decimal_fast32_t(100000), T(100000)); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_NAN == T(1), false); - BOOST_TEST_EQ(BOOST_DECIMAL_DEC_INFINITY == T(1), false); + BOOST_TEST_EQ(std::numeric_limits::quiet_NaN() == T(1), false); + BOOST_TEST_EQ(std::numeric_limits::infinity() == T(1), false); } template diff --git a/test/random_decimal32_fast_math.cpp b/test/random_decimal32_fast_math.cpp index e748963d7..120a9b46e 100644 --- a/test/random_decimal32_fast_math.cpp +++ b/test/random_decimal32_fast_math.cpp @@ -2,12 +2,18 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#include -#include +#ifndef BOOST_DECIMAL_USE_MODULE +#include +#endif + +#include #include #include #include +#ifdef BOOST_DECIMAL_USE_MODULE +import boost.decimal; +#endif #if defined(__clang__) # pragma clang diagnostic push # pragma clang diagnostic ignored "-Wfloat-equal" From 356fe66e61db14071109dda6a6e8e06dba3841b3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 13:14:11 +0200 Subject: [PATCH 219/967] Fix missing header --- include/boost/decimal/detail/io.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index a08997be7..b1320c40c 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -27,6 +27,7 @@ #include #include #include +#include #endif namespace boost { From 2c9972c0faa5dbcddfe57baab16cc764ac9dd139 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 13:40:01 +0200 Subject: [PATCH 220/967] Strip leading whitespace in istream --- include/boost/decimal/detail/io.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index b1320c40c..73f06551c 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -41,7 +41,7 @@ auto operator>>(std::basic_istream& is, DecimalType& d) constexpr std::size_t static_buffer_size {1024U}; std::basic_string t_buffer; - is >> t_buffer; + is >> std::ws >> t_buffer; const auto t_buffer_len {t_buffer.length()}; From 8e813d5c207707000168e1577d29d66e8a2eb8e5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 24 Sep 2025 16:49:22 +0200 Subject: [PATCH 221/967] Implement basic division demotion for better second iter performance --- .../boost/decimal/detail/fenv_rounding.hpp | 21 +++++++++++-------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 345edbc4c..efd6aa807 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -172,6 +172,10 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex template constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bool sign) noexcept { + // T1 will be a 128-bit or 256-bit + using sig_type = typename TargetDecimalType::significand_type; + using demoted_integer_type = std::conditional_t::digits10 < std::numeric_limits::digits10, T1, sig_type>; + auto coeff_digits {detail::num_digits(coeff)}; // How many digits need to be shifted? @@ -199,20 +203,19 @@ constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bo // Do shifting const auto shift_pow_ten {detail::pow10(static_cast(shift))}; const auto div_res {impl::divmod(coeff, shift_pow_ten)}; - const auto shifted_coeff {div_res.quotient}; + auto shifted_coeff {static_cast(div_res.quotient)}; const auto trailing_digits {div_res.remainder}; - coeff = shifted_coeff; const auto sticky {trailing_digits != 0U}; - exp += shift; - biased_exp += shift; - coeff_digits -= shift; // Do rounding - const auto removed_digits {detail::fenv_round(coeff, sign, sticky)}; - exp += removed_digits; - biased_exp += removed_digits; - coeff_digits -= removed_digits; + const auto removed_digits {detail::fenv_round(shifted_coeff, sign, sticky)}; + coeff = static_cast(shifted_coeff); + + const auto offset {removed_digits + shift}; + exp += offset; + biased_exp += offset; + coeff_digits -= offset; return coeff_digits; } From a941274349f97bd682880c7396f7447f8aa21d81 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 12:31:35 +0200 Subject: [PATCH 222/967] For large values check if demotion is possible --- .../boost/decimal/detail/fenv_rounding.hpp | 33 ++++++++++++++++--- 1 file changed, 29 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index efd6aa807..af7afb661 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -202,11 +202,36 @@ constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bo // Do shifting const auto shift_pow_ten {detail::pow10(static_cast(shift))}; - const auto div_res {impl::divmod(coeff, shift_pow_ten)}; - auto shifted_coeff {static_cast(div_res.quotient)}; - const auto trailing_digits {div_res.remainder}; - const auto sticky {trailing_digits != 0U}; + // In the synthetic integer cases it's inexpensive to see if we can demote the type + // relative to the cost of the division and modulo operation + demoted_integer_type shifted_coeff {}; + bool sticky {}; + BOOST_DECIMAL_IF_CONSTEXPR (sizeof(T1) < sizeof(int128::uint128_t)) + { + const auto div_res {impl::divmod(coeff, shift_pow_ten)}; + shifted_coeff = static_cast(div_res.quotient); + const auto trailing_digits {div_res.remainder}; + sticky = trailing_digits != 0U; + } + else + { + if (coeff < std::numeric_limits::max()) + { + const auto smaller_coeff {static_cast(coeff)}; + const auto div_res {impl::divmod(smaller_coeff, static_cast(shift_pow_ten))}; + shifted_coeff = static_cast(div_res.quotient); + const auto trailing_digits {div_res.remainder}; + sticky = trailing_digits != 0U; + } + else + { + const auto div_res {impl::divmod(coeff, shift_pow_ten)}; + shifted_coeff = static_cast(div_res.quotient); + const auto trailing_digits {div_res.remainder}; + sticky = trailing_digits != 0U; + } + } // Do rounding const auto removed_digits {detail::fenv_round(shifted_coeff, sign, sticky)}; From f9003fc8e38589a1fc8f97fbf7242df03445e73f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 12:58:44 +0200 Subject: [PATCH 223/967] Import div method from int128 --- .../boost/decimal/detail/int128/cstdlib.hpp | 103 ++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 include/boost/decimal/detail/int128/cstdlib.hpp diff --git a/include/boost/decimal/detail/int128/cstdlib.hpp b/include/boost/decimal/detail/int128/cstdlib.hpp new file mode 100644 index 000000000..3ecf321f6 --- /dev/null +++ b/include/boost/decimal/detail/int128/cstdlib.hpp @@ -0,0 +1,103 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_DETAIL_INT128_CSTDLIB_HPP +#define BOOST_DECIMAL_DETAIL_INT128_CSTDLIB_HPP + +#include "int128.hpp" + +namespace boost { +namespace int128 { + +struct u128div_t +{ + uint128_t quot; + uint128_t rem; +}; + +struct i128div_t +{ + int128_t quot; + int128_t rem; +}; + +constexpr u128div_t div(const uint128_t x, const uint128_t y) noexcept +{ + if (BOOST_DECIMAL_DETAIL_INT128_UNLIKELY(x == 0U || y == 0U)) + { + return u128div_t{0U, 0U}; + } + + if (x < y) + { + return u128div_t{0U, x}; + } + else if (y.high != 0U) + { + u128div_t res {}; + res.quot = detail::knuth_div(x, y, res.rem); + return res; + } + else + { + if (x.high == 0U) + { + return u128div_t{x.low / y.low, x.low % y.low}; + } + else + { + u128div_t res {}; + detail::one_word_div(x, y.low, res.quot, res.rem); + return res; + } + } +} + +constexpr i128div_t div(const int128_t x, const int128_t y) noexcept +{ + if (BOOST_DECIMAL_DETAIL_INT128_UNLIKELY(x == 0 || y == 0)) + { + return i128div_t{0, 0}; + } + + #if defined(BOOST_DECIMAL_DETAIL_INT128_HAS_INT128) + + const auto builtin_x {static_cast(x)}; + const auto builtin_y {static_cast(y)}; + return i128div_t{static_cast(builtin_x / builtin_y), + static_cast(builtin_x % builtin_y)}; + + #else + + const auto abs_lhs {static_cast(abs(x))}; + const auto abs_rhs {static_cast(abs(y))}; + + if (abs_rhs > abs_lhs) + { + return {0, x}; + } + + const auto unsigned_res {div(abs_lhs, abs_rhs)}; + + const auto negative_quot {(x.high < 0) != (y.high < 0)}; + #if defined(_MSC_VER) && !defined(__GNUC__) + const auto negative_rem {static_cast(x.high < 0)}; + #else + const auto negative_rem {static_cast((x.high < 0) != (y.high < 0))}; + #endif + + i128div_t res {static_cast(unsigned_res.quot), static_cast(unsigned_res.rem)}; + + res.quot = negative_quot ? -res.quot : res.quot; + res.rem = negative_rem ? -res.rem : res.rem; + + return res; + + #endif +} + +} // namespace int128 +} // namespace boost + +#endif // BOOST_DECIMAL_DETAIL_INT128_CSTDLIB_HPP From 3478b1f90135f9ef21d93d3725b2d589193694df Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 12:59:42 +0200 Subject: [PATCH 224/967] Improve divmod performance --- include/boost/decimal/detail/fenv_rounding.hpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index af7afb661..9e0dfb814 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -11,6 +11,7 @@ #include #include #include +#include "int128/cstdlib.hpp" namespace boost { namespace decimal { @@ -49,6 +50,22 @@ constexpr auto divmod(T dividend, T divisor) noexcept -> divmod_result return {q, r}; } +constexpr auto divmod(const int128::uint128_t dividend, const int128::uint128_t divisor) -> divmod_result +{ + #ifdef BOOST_DECIMAL_DETAIL_INT128_HAS_INT128 + + const auto builtin_num {static_cast(dividend)}; + const auto builtin_denom {static_cast(divisor)}; + return {builtin_num / builtin_denom, builtin_num % builtin_denom}; + + #else + + const auto res {int128::div(dividend, divisor)}; + return {res.quot, res.rem}; + + #endif +} + constexpr auto divmod(const u256& lhs, const u256& rhs) noexcept { return div_mod(lhs, rhs); From 20a2a2b5b7ef70f8638ca9eee07c5fbb9fe58594 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 13:32:02 +0200 Subject: [PATCH 225/967] Simplify rounding logic --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 9e0dfb814..affe17f97 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -122,7 +122,7 @@ constexpr auto fenv_round_impl(T& val, const bool is_neg, const bool sticky, con break; case rounding_mode::fe_dec_to_nearest: // Round to even or nearest - if (trailing_num > 5U || (trailing_num == 5U && sticky) || (trailing_num == 5U && !sticky && (static_cast(val) & 1U) == 1U)) + if (trailing_num > 5U || (trailing_num == 5U && (sticky || (static_cast(val) & 1U) == 1U))) { ++val; } From 6c8c003d9458de83a313392c03e6443a4dd452cb Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:02:56 +0200 Subject: [PATCH 226/967] Simplify logic --- .../decimal/detail/integer_search_trees.hpp | 25 +------------------ 1 file changed, 1 insertion(+), 24 deletions(-) diff --git a/include/boost/decimal/detail/integer_search_trees.hpp b/include/boost/decimal/detail/integer_search_trees.hpp index 0209ac859..8008e399f 100644 --- a/include/boost/decimal/detail/integer_search_trees.hpp +++ b/include/boost/decimal/detail/integer_search_trees.hpp @@ -154,30 +154,7 @@ constexpr int num_digits(const u256& x) noexcept constexpr auto num_digits(const builtin_uint128_t& x) noexcept -> int { - if (static_cast(x >> 64) == UINT64_C(0)) - { - return num_digits(static_cast(x)); - } - - // We start left at 19 because we already eliminated the high word being 0 - std::uint32_t left = 19U; - std::uint32_t right = 38U; - - while (left < right) - { - std::uint32_t mid = (left + right + 1U) / 2U; - - if (x >= impl::builtin_128_pow10[mid]) - { - left = mid; - } - else - { - right = mid - 1; - } - } - - return static_cast(left + 1); + return num_digits(int128::uint128_t{x}); } #endif // Has int128 From 60d1bf506a6c3cdab79aa544e20cb397d61f4c69 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:03:07 +0200 Subject: [PATCH 227/967] Remove unneeded check --- include/boost/decimal/detail/integer_search_trees.hpp | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/detail/integer_search_trees.hpp b/include/boost/decimal/detail/integer_search_trees.hpp index 8008e399f..df19e5e45 100644 --- a/include/boost/decimal/detail/integer_search_trees.hpp +++ b/include/boost/decimal/detail/integer_search_trees.hpp @@ -82,7 +82,7 @@ constexpr auto num_digits(T init_x) noexcept -> int # pragma warning(disable: 4307) // MSVC 14.1 warns of intergral constant overflow #endif -constexpr int num_digits(const boost::int128::uint128_t& x) noexcept +constexpr int num_digits(const int128::uint128_t& x) noexcept { if (x.high == UINT64_C(0)) { @@ -102,7 +102,8 @@ constexpr int num_digits(const boost::int128::uint128_t& x) noexcept return estimated_digits + 1; } - if (estimated_digits > 1 && x < impl::BOOST_DECIMAL_DETAIL_INT128_pow10[estimated_digits - 1]) + // Estimated digits can't be less than 20 (65-bits) + if (x < impl::BOOST_DECIMAL_DETAIL_INT128_pow10[estimated_digits - 1]) { return estimated_digits - 1; } @@ -138,7 +139,8 @@ constexpr int num_digits(const u256& x) noexcept return estimated_digits + 1; } - if (estimated_digits > 1 && x < impl::u256_pow_10[estimated_digits - 1]) + // Estimated digits will never be less than 39 (129 bits) + if (x < impl::u256_pow_10[estimated_digits - 1]) { return estimated_digits - 1; } From dcb53dde91753bcc151aa5f6e19537b6c30a81ff Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:25:05 +0200 Subject: [PATCH 228/967] Update readme references --- README.md | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index ab0010d08..d3277b3ba 100644 --- a/README.md +++ b/README.md @@ -159,5 +159,14 @@ The complete documentation can be found at: https://develop.decimal.cpp.al ## References -[1] IEEE Computer Society. _IEEE_ _Standard_ _for_ _Floating-Point_ _Arithmetic_, -Std. IEEE:754-2008, August 29, 2008 (doi:10.1109/IEEESTD.2008.4610935). +- Michael F. Cowlishaw [_Floating-Point: Algorism(sic) for Computers_](https://www.cs.tufts.edu/~nr/cs257/archive/mike-cowlishaw/decimal-arith.pdf_Decimal), Proceedings of the 16th IEEE Symposium on Computer Arithmetic, 2003 + +- Donald E. Knuth, _The Art of Computer Programming Volume 2 Seminumerical Algorithms_, 3rd edition, 1998 + +- Jean-Michel Muller, _Elementary Functions_, 3rd edition, 2010 + +- Jean-Michel Muller, et. al., _Handbook of Floating-Point Arithmetic_, 2000 + +- John F. Hart, et. al., _Computer Approximations_, 1968 + +- IEEE, _IEEE Standard for Floating-Point Arithmetic_, 2019 From e666d1a26e949177483c056677a4bcf54f5d2466 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:35:35 +0200 Subject: [PATCH 229/967] Slight clarity improvement by removing excess information --- doc/modules/ROOT/pages/cfenv.adoc | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 9feeb8b83..bb3bba9fd 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -81,8 +81,6 @@ static constexpr rounding_mode _boost_decimal_global_rounding_mode { ---- -The default rounding mode for compile time is the same as the default run-time. +The default rounding mode for compile time is the same as the default runtime. -NOTE: There is no requirement to explicitly define a compile-time nor run-time rounding mode - -IMPORTANT: Prior to v5.2.0 this header was ``, but has been changed to `` for consistency with the STL. +IMPORTANT: Prior to v5.2.0 this header was ``, but has been changed to `` for consistency with the STL naming convention. From 4668a6597653404767d17947b4384a8d31b552b4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:36:33 +0200 Subject: [PATCH 230/967] Improve cfloat page --- doc/modules/ROOT/pages/cfloat.adoc | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/doc/modules/ROOT/pages/cfloat.adoc b/doc/modules/ROOT/pages/cfloat.adoc index 4e160bafb..c3d3cdbd3 100644 --- a/doc/modules/ROOT/pages/cfloat.adoc +++ b/doc/modules/ROOT/pages/cfloat.adoc @@ -8,7 +8,9 @@ https://www.boost.org/LICENSE_1_0.txt = `` support :idprefix: cfloat_ -The following macros analogous to those from `` for the decimal floating point types: +Macros analogous to those from https://en.cppreference.com/w/cpp/header/cfloat.html[``] are provided by the library. +These macros are not available when consuming the library as a module. +In all cases `std::numeric_limits` should be preferred. [source, c++] ---- @@ -46,7 +48,7 @@ The following macros analogous to those from `` for the decimal floating #define BOOST_DECIMAL_DEC128_MAX std::numeric_limits::denorm_min() ---- -Additionally `BOOST_DECIMAL_DEC_EVAL_METHOD` is similar to `FLT_EVAL_METHOD`: https://en.cppreference.com/w/cpp/types/climits/FLT_EVAL_METHOD +Additionally `BOOST_DECIMAL_DEC_EVAL_METHOD` is similar to https://en.cppreference.com/w/cpp/types/climits/FLT_EVAL_METHOD[`FLT_EVAL_METHOD`]: The valid values are: @@ -57,4 +59,4 @@ The valid values are: | 2 | All `decimal32_t` and `decimal64_t` (or fast equivalents) operations are evaluated with the precision and range of `decimal128_t` internally, and returned as the original type. |=== -To use the functionality you must `#define BOOST_DECIMAL_DEC_EVAL_METHOD` to the value you want before you `#include `. +To use the functionality you must `#define BOOST_DECIMAL_DEC_EVAL_METHOD` to the value you want before you `#include `, or any Boost.Decimal header if you are not using the convenience header. From a24fda9e42fd4ebbbe4d1523e64f99f1acb50266 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:46:03 +0200 Subject: [PATCH 231/967] Remove unneeded macro --- include/boost/decimal/charconv.hpp | 20 +++++++++---------- include/boost/decimal/detail/memcpy.hpp | 14 ++++++------- .../decimal/detail/to_chars_integer_impl.hpp | 2 +- 3 files changed, 17 insertions(+), 19 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 192589948..e24fed325 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -169,7 +169,7 @@ constexpr auto from_chars(std::string_view str, DecimalType& value, std::chars_f namespace detail { template -BOOST_DECIMAL_CONSTEXPR auto to_chars_nonfinite(char* first, char* last, const TargetDecimalType& value, const int fp, const chars_format fmt, const int local_precision) noexcept -> to_chars_result +constexpr auto to_chars_nonfinite(char* first, char* last, const TargetDecimalType& value, const int fp, const chars_format fmt, const int local_precision) noexcept -> to_chars_result { const auto buffer_len = last - first; @@ -370,7 +370,7 @@ constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDec } template -BOOST_DECIMAL_CONSTEXPR auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const int local_precision) noexcept -> to_chars_result +constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const int local_precision) noexcept -> to_chars_result { if (signbit(value)) { @@ -629,7 +629,7 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT } template -BOOST_DECIMAL_CONSTEXPR auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const int local_precision) noexcept -> to_chars_result +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const int local_precision) noexcept -> to_chars_result { using target_decimal_significand_type = typename TargetDecimalType::significand_type; @@ -983,7 +983,7 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp } template -BOOST_DECIMAL_CONSTEXPR auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value, const int local_precision) noexcept -> to_chars_result +constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value, const int local_precision) noexcept -> to_chars_result { using Unsigned_Integer = std::conditional_t<(std::numeric_limits::digits > std::numeric_limits::digits), @@ -1115,7 +1115,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_hex_impl(char* first, char* last, const Ta #endif template -BOOST_DECIMAL_CONSTEXPR auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt = chars_format::general, const int local_precision = -1) noexcept -> to_chars_result +constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt = chars_format::general, const int local_precision = -1) noexcept -> to_chars_result { // Sanity check our bounds if (BOOST_DECIMAL_UNLIKELY(first >= last)) @@ -1188,19 +1188,19 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_impl(char* first, char* last, const Target } //namespace detail BOOST_DECIMAL_EXPORT template -BOOST_DECIMAL_CONSTEXPR auto to_chars(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result +constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result { return detail::to_chars_impl(first, last, value); } BOOST_DECIMAL_EXPORT template -BOOST_DECIMAL_CONSTEXPR auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result +constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result { return detail::to_chars_impl(first, last, value, fmt); } BOOST_DECIMAL_EXPORT template -BOOST_DECIMAL_CONSTEXPR auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt, int precision) noexcept -> to_chars_result +constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt, int precision) noexcept -> to_chars_result { if (precision < 0) { @@ -1213,7 +1213,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars(char* first, char* last, const TargetDecim #ifdef BOOST_DECIMAL_HAS_STD_CHARCONV BOOST_DECIMAL_EXPORT template -BOOST_DECIMAL_CONSTEXPR auto to_chars(char* first, char* last, DecimalType value, std::chars_format fmt) +constexpr auto to_chars(char* first, char* last, DecimalType value, std::chars_format fmt) BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::to_chars_result) { to_chars_result boost_r {}; @@ -1241,7 +1241,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars(char* first, char* last, DecimalType value } BOOST_DECIMAL_EXPORT template -BOOST_DECIMAL_CONSTEXPR auto to_chars(char* first, char* last, DecimalType value, std::chars_format fmt, int precision) +constexpr auto to_chars(char* first, char* last, DecimalType value, std::chars_format fmt, int precision) BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::to_chars_result) { if (precision < 0) diff --git a/include/boost/decimal/detail/memcpy.hpp b/include/boost/decimal/detail/memcpy.hpp index 57fa36e3c..0161bf111 100644 --- a/include/boost/decimal/detail/memcpy.hpp +++ b/include/boost/decimal/detail/memcpy.hpp @@ -33,8 +33,6 @@ namespace detail { namespace impl { -#define BOOST_DECIMAL_CONSTEXPR constexpr - constexpr char* memcpy_impl(char* dest, const char* src, std::size_t count) { for (std::size_t i = 0; i < count; ++i) @@ -81,7 +79,7 @@ constexpr char* memmove_impl(char* dest, const char* src, std::size_t count) #if !defined(BOOST_DECIMAL_NO_CONSTEVAL_DETECTION) -BOOST_DECIMAL_CONSTEXPR char* memcpy(char* dest, const char* src, std::size_t count) +constexpr char* memcpy(char* dest, const char* src, std::size_t count) { if (BOOST_DECIMAL_IS_CONSTANT_EVALUATED(count)) { @@ -105,7 +103,7 @@ BOOST_DECIMAL_CONSTEXPR char* memcpy(char* dest, const char* src, std::size_t co } } -BOOST_DECIMAL_CONSTEXPR char* memset(char* dest, int ch, std::size_t count) +constexpr char* memset(char* dest, int ch, std::size_t count) { if (BOOST_DECIMAL_IS_CONSTANT_EVALUATED(count)) { @@ -117,7 +115,7 @@ BOOST_DECIMAL_CONSTEXPR char* memset(char* dest, int ch, std::size_t count) } } -BOOST_DECIMAL_CONSTEXPR char* memmove(char* dest, const char* src, std::size_t count) +constexpr char* memmove(char* dest, const char* src, std::size_t count) { if (BOOST_DECIMAL_IS_CONSTANT_EVALUATED(count)) { @@ -131,17 +129,17 @@ BOOST_DECIMAL_CONSTEXPR char* memmove(char* dest, const char* src, std::size_t c #else // No consteval detection -BOOST_DECIMAL_CONSTEXPR char* memcpy(char* dest, const char* src, std::size_t count) +constexpr char* memcpy(char* dest, const char* src, std::size_t count) { return impl::memcpy_impl(dest, src, count); } -BOOST_DECIMAL_CONSTEXPR char* memset(char* dest, int ch, std::size_t count) +constexpr char* memset(char* dest, int ch, std::size_t count) { return impl::memset_impl(dest, ch, count); } -BOOST_DECIMAL_CONSTEXPR char* memmove(char* dest, const char* src, std::size_t count) +constexpr char* memmove(char* dest, const char* src, std::size_t count) { return impl::memmove_impl(dest, src, count); } diff --git a/include/boost/decimal/detail/to_chars_integer_impl.hpp b/include/boost/decimal/detail/to_chars_integer_impl.hpp index 3d4676f90..4923a8d0c 100644 --- a/include/boost/decimal/detail/to_chars_integer_impl.hpp +++ b/include/boost/decimal/detail/to_chars_integer_impl.hpp @@ -45,7 +45,7 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE char digit_table[] = { // Use a simple lookup table to put together the Integer in character form template -BOOST_DECIMAL_CONSTEXPR auto to_chars_integer_impl(char* first, char* last, Integer value, int) noexcept +constexpr auto to_chars_integer_impl(char* first, char* last, Integer value, int) noexcept BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_integral_v, Integer, detail::is_integral_v, Unsigned_Integer, to_chars_result) { const std::ptrdiff_t output_length = last - first; From 00db6873293d385d9bc0dfc3b27e6823fc79ab07 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:46:12 +0200 Subject: [PATCH 232/967] Remove removed macro from docs --- doc/modules/ROOT/pages/api_reference.adoc | 4 ++-- doc/modules/ROOT/pages/charconv.adoc | 17 +++++------------ doc/modules/ROOT/pages/config.adoc | 6 ------ 3 files changed, 7 insertions(+), 20 deletions(-) diff --git a/doc/modules/ROOT/pages/api_reference.adoc b/doc/modules/ROOT/pages/api_reference.adoc index 3fd590be3..38569384b 100644 --- a/doc/modules/ROOT/pages/api_reference.adoc +++ b/doc/modules/ROOT/pages/api_reference.adoc @@ -48,10 +48,10 @@ enums, constants and macros that are provided in this library. |=== | User Configuration | Automatic Configuration | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CASSERT`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_CXX20_CONSTEXPR`] -| xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_IOSTREAM`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_CONSTEXPR`] +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_IOSTREAM`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_NO_CONSTEVAL_DETECTION`] | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CLIB`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_CHARCONV`] | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_EXCEPTIONS`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_STRING_VIEW`] -| xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_NO_CONSTEVAL_DETECTION`] +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`] | | xref:config.adoc#configuration_user[`BOOST_DECIMAL_FAST_MATH`] | | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DEC_EVAL_METHOD`] | |=== diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index a315b4efe..718d3f641 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -123,21 +123,21 @@ namespace boost { namespace decimal { template -BOOST_DECIMAL_CONSTEXPR to_chars_result to_chars(char* first, char* last, DecimalType value) noexcept; +constexpr to_chars_result to_chars(char* first, char* last, DecimalType value) noexcept; template -BOOST_DECIMAL_CONSTEXPR to_chars_result to_chars(char* first, char* last, DecimalType value, chars_format fmt) noexcept; +constexpr to_chars_result to_chars(char* first, char* last, DecimalType value, chars_format fmt) noexcept; template -BOOST_DECIMAL_CONSTEXPR to_chars_result to_chars(char* first, char* last, DecimalType value, chars_format fmt, int precision) noexcept; +constexpr to_chars_result to_chars(char* first, char* last, DecimalType value, chars_format fmt, int precision) noexcept; #ifdef BOOST_DECIMAL_HAS_STD_CHARCONV template -BOOST_DECIMAL_CONSTEXPR std::to_chars_result to_chars(char* first, char* last, DecimalType value, std::chars_format fmt) noexcept; +constexpr std::to_chars_result to_chars(char* first, char* last, DecimalType value, std::chars_format fmt) noexcept; template -BOOST_DECIMAL_CONSTEXPR std::to_chars_result to_chars(char* first, char* last, DecimalType value, std::chars_format fmt, int precision) noexcept; +constexpr std::to_chars_result to_chars(char* first, char* last, DecimalType value, std::chars_format fmt, int precision) noexcept; #endif // BOOST_DECIMAL_HAS_STD_CHARCONV @@ -147,13 +147,6 @@ BOOST_DECIMAL_CONSTEXPR std::to_chars_result to_chars(char* first, char* last, D All `to_chars` functions ignore the effects of cohorts, and instead output normalized values. -NOTE: `BOOST_DECIMAL_CONSTEXPR` is defined if: - - - `_MSC_FULL_VER` >= 192528326 - - `\\__GNUC__` >= 9 - - Compiler has: `__builtin_is_constant_evaluated()` - - pass:[C++]20 support with: `std::is_constant_evaluated()` - IMPORTANT: Same as `from_chars`, `boost::decimal::to_chars` will return a `std::to_chars_result` if `std::chars_format` is used to specify the format; otherwise it returns a `boost::decimal::to_chars_result`. The library offers an additional feature for sizing buffers without specified precision and in general format diff --git a/doc/modules/ROOT/pages/config.adoc b/doc/modules/ROOT/pages/config.adoc index 3b0e9e754..ad5623e94 100644 --- a/doc/modules/ROOT/pages/config.adoc +++ b/doc/modules/ROOT/pages/config.adoc @@ -53,12 +53,6 @@ Again, it must be defined before inclusion of decimal headers like so: - `BOOST_DECIMAL_CXX20_CONSTEXPR`: This is defined to `constexpr` when compiling with C++20 or greater, otherwise it expands to nothing. -- `BOOST_DECIMAL_CONSTEXPR`: This is defined to `constexpr` when any of the following are met, or `BOOST_DECIMAL_NO_CONSTEVAL_DETECTION` is when they are not met : - * pass:[_MSC_FULL_VER] >= 192528326 - * pass:[__GNUC__] >= 9 - * Compiler has: __builtin_is_constant_evaluated() - * C++20 support with: std::is_constant_evaluated() - - `BOOST_DECIMAL_HAS_STD_CHARCONV`: This macro is defined if header `` exists and the language standard used is >= C++17 * We only need the structs and enums out of the header so we are not concerned with being overly restrictive about the feature test macros. ** Known compilers that support this lighter requirement are: GCC >= 10, Clang >= 13, and MSVC >= 14.2 From d90d24259dd42fc2a06977fb5d9482bce70f13e7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:49:48 +0200 Subject: [PATCH 233/967] Fix type consistency --- doc/modules/ROOT/pages/conversions.adoc | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/doc/modules/ROOT/pages/conversions.adoc b/doc/modules/ROOT/pages/conversions.adoc index fe719c1c8..123c80e47 100644 --- a/doc/modules/ROOT/pages/conversions.adoc +++ b/doc/modules/ROOT/pages/conversions.adoc @@ -48,9 +48,9 @@ constexpr std::uint64_t to_bid_d64f(decimal_fast64_t val) noexcept; constexpr decimal_fast64_t from_bid_d64f(std::uint64_t bits) noexcept; -constexpr detail::uint128 to_bid_d128(decimal128_t val) noexcept; +constexpr detail::uint128_t to_bid_d128(decimal128_t val) noexcept; -constexpr decimal128_t from_bid_d128(detail::uint128 bits) noexcept; +constexpr decimal128_t from_bid_d128(detail::uint128_t bits) noexcept; // Automatic detection if your platform has built-in unsigned __int128 or not to enable/disable the overload #ifdef BOOST_DECIMAL_HAS_INT128 @@ -79,7 +79,7 @@ template constexpr T from_bid(std::uint64_t bits) noexcept; template -constexpr T from_bid(detail::uint128 bits) noexcept; +constexpr T from_bid(detail::uint128_t bits) noexcept; // ----- DPD Conversions ----- @@ -91,9 +91,9 @@ constexpr std::uint64_t to_dpd_d64(decimal64_t val) noexcept; constexpr std::uint64_t to_dpd_d64f(decimal_fast64_t val) noexcept; -constexpr detail::uint128 to_dpd_d128(decimal128_t val) noexcept; +constexpr detail::uint128_t to_dpd_d128(decimal128_t val) noexcept; -constexpr detail::uint128 to_dpd_d128f(decimal_fast128_t val) noexcept; +constexpr detail::uint128_t to_dpd_d128f(decimal_fast128_t val) noexcept; template constexpr auto to_dpd(T val) noexcept; @@ -105,7 +105,7 @@ template constexpr T from_dpd(std::uint64_t bits) noexcept; template -constexpr T from_dpd(detail::uint128 bits) noexcept; +constexpr T from_dpd(detail::uint128_t bits) noexcept; #ifdef BOOST_DECIMAL_HAS_INT128 template From 0862d9419627345ba6c3e50e3ecfd6c4777a590d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:56:12 +0200 Subject: [PATCH 234/967] Expose uint128_t to the user rather than returning a detail --- include/boost/decimal.hpp | 1 + include/boost/decimal/dpd_conversion.hpp | 2 +- include/boost/decimal/uint128_t.hpp | 18 ++++++++++++++++++ 3 files changed, 20 insertions(+), 1 deletion(-) create mode 100644 include/boost/decimal/uint128_t.hpp diff --git a/include/boost/decimal.hpp b/include/boost/decimal.hpp index ad08bae81..00e7fd678 100644 --- a/include/boost/decimal.hpp +++ b/include/boost/decimal.hpp @@ -43,6 +43,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include diff --git a/include/boost/decimal/dpd_conversion.hpp b/include/boost/decimal/dpd_conversion.hpp index 94b3d6011..e5fd21a29 100644 --- a/include/boost/decimal/dpd_conversion.hpp +++ b/include/boost/decimal/dpd_conversion.hpp @@ -14,7 +14,7 @@ #include #include #include -#include "detail/int128.hpp" +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include diff --git a/include/boost/decimal/uint128_t.hpp b/include/boost/decimal/uint128_t.hpp new file mode 100644 index 000000000..683c2ac4b --- /dev/null +++ b/include/boost/decimal/uint128_t.hpp @@ -0,0 +1,18 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_UINT128_T_HPP +#define BOOST_DECIMAL_UINT128_T_HPP + +#include "detail/int128.hpp" + +namespace boost { +namespace decimal { + +using uint128_t = int128::uint128_t; + +} +} + +#endif // BOOST_DECIMAL_UINT128_T_HPP From b0c9c8bbd9a49e91320ba6210a58514821d2d547 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 14:57:27 +0200 Subject: [PATCH 235/967] Don't return a detail type to the user --- doc/modules/ROOT/pages/conversions.adoc | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/doc/modules/ROOT/pages/conversions.adoc b/doc/modules/ROOT/pages/conversions.adoc index 123c80e47..c81512fe3 100644 --- a/doc/modules/ROOT/pages/conversions.adoc +++ b/doc/modules/ROOT/pages/conversions.adoc @@ -16,20 +16,17 @@ Should the user want to capture the bit format in BID or convert to DPD we offer ---- #include #include +#include namespace boost { namespace decimal { -namespace detail { - struct uint128_t { std::uint64_t high; std::uint64_t low; }; -} // namespace detail - // ----- BID Conversions ----- constexpr std::uint32_t to_bid_d32(decimal32_t val) noexcept; @@ -48,9 +45,9 @@ constexpr std::uint64_t to_bid_d64f(decimal_fast64_t val) noexcept; constexpr decimal_fast64_t from_bid_d64f(std::uint64_t bits) noexcept; -constexpr detail::uint128_t to_bid_d128(decimal128_t val) noexcept; +constexpr uint128_t to_bid_d128(decimal128_t val) noexcept; -constexpr decimal128_t from_bid_d128(detail::uint128_t bits) noexcept; +constexpr decimal128_t from_bid_d128(uint128_t bits) noexcept; // Automatic detection if your platform has built-in unsigned __int128 or not to enable/disable the overload #ifdef BOOST_DECIMAL_HAS_INT128 @@ -59,9 +56,9 @@ constexpr decimal128_t from_bid_d128(unsigned __int128 bits) noexcept; #endif // BOOST_DECIMAL_HAS_INT128 -constexpr detail::uint128_t to_bid_d128f(decimal_fast128_t val) noexcept; +constexpr uint128_t to_bid_d128f(decimal_fast128_t val) noexcept; -constexpr decimal128_t from_bid_d128f(detail::uint128_t bits) noexcept; +constexpr decimal128_t from_bid_d128f(uint128_t bits) noexcept; #ifdef BOOST_DECIMAL_HAS_INT128 @@ -79,7 +76,7 @@ template constexpr T from_bid(std::uint64_t bits) noexcept; template -constexpr T from_bid(detail::uint128_t bits) noexcept; +constexpr T from_bid(uint128_t bits) noexcept; // ----- DPD Conversions ----- @@ -91,9 +88,9 @@ constexpr std::uint64_t to_dpd_d64(decimal64_t val) noexcept; constexpr std::uint64_t to_dpd_d64f(decimal_fast64_t val) noexcept; -constexpr detail::uint128_t to_dpd_d128(decimal128_t val) noexcept; +constexpr uint128_t to_dpd_d128(decimal128_t val) noexcept; -constexpr detail::uint128_t to_dpd_d128f(decimal_fast128_t val) noexcept; +constexpr uint128_t to_dpd_d128f(decimal_fast128_t val) noexcept; template constexpr auto to_dpd(T val) noexcept; @@ -105,11 +102,13 @@ template constexpr T from_dpd(std::uint64_t bits) noexcept; template -constexpr T from_dpd(detail::uint128_t bits) noexcept; +constexpr T from_dpd(uint128_t bits) noexcept; #ifdef BOOST_DECIMAL_HAS_INT128 + template constexpr T from_dpd(unsigned __int128 bits) noexcept; + #endif } // namespace decimal From 3ecd675090f2280a97894768d230b2f2474b482b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 15:04:44 +0200 Subject: [PATCH 236/967] Add note about limited support --- doc/modules/ROOT/pages/cstdio.adoc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/modules/ROOT/pages/cstdio.adoc b/doc/modules/ROOT/pages/cstdio.adoc index 323f21773..b427a052f 100644 --- a/doc/modules/ROOT/pages/cstdio.adoc +++ b/doc/modules/ROOT/pages/cstdio.adoc @@ -30,6 +30,8 @@ int printf(const char* format, Dec... values) noexcept; } //namespace boost ---- +These functions are limited in their support to only decimal floating point types, and are not a complete replacement for their `std::` equivalents. + == Type Modifiers The type modifiers to be used are: From 282940b97a20ce445c5b9e2ee7059c8bb5ebfd66 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 15:06:03 +0200 Subject: [PATCH 237/967] Hyperlink to strtod doc page --- doc/modules/ROOT/pages/cstdlib.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/cstdlib.adoc b/doc/modules/ROOT/pages/cstdlib.adoc index 93a4f85c8..0965e7a39 100644 --- a/doc/modules/ROOT/pages/cstdlib.adoc +++ b/doc/modules/ROOT/pages/cstdlib.adoc @@ -8,7 +8,7 @@ https://www.boost.org/LICENSE_1_0.txt = `` support :idprefix: cstdlib_ -The following functions analogous to those from `` are provided: +The following functions analogous to those from https://en.cppreference.com/w/cpp/string/byte/strtof.html[``] are provided: [source, c++] ---- From ac2c444f7d76b355c04c1487eb51cd1a8676751d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 15:10:40 +0200 Subject: [PATCH 238/967] Update file structure --- doc/modules/ROOT/pages/file_structure.adoc | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/file_structure.adoc b/doc/modules/ROOT/pages/file_structure.adoc index 435101391..40d3944bb 100644 --- a/doc/modules/ROOT/pages/file_structure.adoc +++ b/doc/modules/ROOT/pages/file_structure.adoc @@ -37,5 +37,6 @@ boost/ ├── iostream.hpp ├── literals.hpp ├── numbers.hpp - └── string.hpp + ├── string.hpp + └── uint128_t.hpp ---- From 102b6c0aa89e977ae8c4b44a5b9cabc0efc6bcc3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 15:11:46 +0200 Subject: [PATCH 239/967] Add link to std::hash page --- doc/modules/ROOT/pages/functional.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/functional.adoc b/doc/modules/ROOT/pages/functional.adoc index 300217a35..407e9551c 100644 --- a/doc/modules/ROOT/pages/functional.adoc +++ b/doc/modules/ROOT/pages/functional.adoc @@ -8,7 +8,7 @@ https://www.boost.org/LICENSE_1_0.txt = `` support :idprefix: functional_ -The following functions from `` are overloaded: +The following functions from https://en.cppreference.com/w/cpp/utility/hash.html[``] are overloaded: [source, c++] ---- From 80e14b449062494bc7aa0ce7aba17569b385f4ed Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 15:53:17 +0200 Subject: [PATCH 240/967] Only overload for platforms with builtins --- include/boost/decimal/detail/fenv_rounding.hpp | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index affe17f97..daf62a8ad 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -50,22 +50,17 @@ constexpr auto divmod(T dividend, T divisor) noexcept -> divmod_result return {q, r}; } +#ifdef BOOST_DECIMAL_DETAIL_INT128_HAS_INT128 + constexpr auto divmod(const int128::uint128_t dividend, const int128::uint128_t divisor) -> divmod_result { - #ifdef BOOST_DECIMAL_DETAIL_INT128_HAS_INT128 - const auto builtin_num {static_cast(dividend)}; const auto builtin_denom {static_cast(divisor)}; return {builtin_num / builtin_denom, builtin_num % builtin_denom}; - - #else - - const auto res {int128::div(dividend, divisor)}; - return {res.quot, res.rem}; - - #endif } +#endif + constexpr auto divmod(const u256& lhs, const u256& rhs) noexcept { return div_mod(lhs, rhs); From 8a9f98e059f2510c0b74723eba4c9acd3aea1c5e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 25 Sep 2025 15:53:49 +0200 Subject: [PATCH 241/967] Ignore false negative --- include/boost/decimal/detail/fenv_rounding.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index daf62a8ad..75b13520c 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -231,7 +231,7 @@ constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bo if (coeff < std::numeric_limits::max()) { const auto smaller_coeff {static_cast(coeff)}; - const auto div_res {impl::divmod(smaller_coeff, static_cast(shift_pow_ten))}; + const auto div_res {impl::divmod(smaller_coeff, static_cast(shift_pow_ten))}; // LCOV_EXCL_LINE : False negative since above and below are hit shifted_coeff = static_cast(div_res.quotient); const auto trailing_digits {div_res.remainder}; sticky = trailing_digits != 0U; From c109832be95963602b5646402fa1adf5c2507886 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 26 Sep 2025 08:59:04 +0200 Subject: [PATCH 242/967] Ignore tgamma false negatives --- include/boost/decimal/detail/cmath/tgamma.hpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/cmath/tgamma.hpp b/include/boost/decimal/detail/cmath/tgamma.hpp index 9fd089ce8..6929d91d4 100644 --- a/include/boost/decimal/detail/cmath/tgamma.hpp +++ b/include/boost/decimal/detail/cmath/tgamma.hpp @@ -50,7 +50,7 @@ constexpr auto tgamma_impl(const T x) noexcept } else { - result = x; + result = x; // LCOV_EXCL_LINE : False negative } #endif } @@ -58,7 +58,7 @@ constexpr auto tgamma_impl(const T x) noexcept { // Pure negative integer argument. #ifndef BOOST_DECIMAL_FAST_MATH - result = std::numeric_limits::quiet_NaN(); + result = std::numeric_limits::quiet_NaN(); // LCOV_EXCL_LINE : False negative #else result = T{0}; #endif @@ -129,8 +129,8 @@ constexpr auto tgamma_impl(const T x) noexcept } // namespace detail BOOST_DECIMAL_EXPORT template -constexpr auto tgamma(const T x) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) +constexpr auto tgamma(const T x) noexcept // LCOV_EXCL_LINE + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) // LCOV_EXCL_LINE { using evaluation_type = detail::evaluation_type_t; From cd8e0a0559915d5432248b85f97927ff18230d4b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 26 Sep 2025 09:04:57 +0200 Subject: [PATCH 243/967] Force runtime evaluation for coverage --- test/test_cmath.cpp | 50 +++++++++++++++++++++++++++------------------ 1 file changed, 30 insertions(+), 20 deletions(-) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index a3c6d3aae..61704e608 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -73,10 +73,12 @@ void test_fmax() template void test_isgreater() { - BOOST_TEST_EQ(isgreater(Dec(1), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(isgreater(std::numeric_limits::quiet_NaN(), Dec(1)), false); - BOOST_TEST_EQ(isgreater(std::numeric_limits::quiet_NaN(), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(isgreater(std::numeric_limits::infinity(), -std::numeric_limits::infinity()), true); + std::uniform_int_distribution dist(1, 10); + + BOOST_TEST_EQ(isgreater(Dec(1), std::numeric_limits::quiet_NaN() * dist(rng)), false); + BOOST_TEST_EQ(isgreater(std::numeric_limits::quiet_NaN() * dist(rng), Dec(1)), false); + BOOST_TEST_EQ(isgreater(std::numeric_limits::quiet_NaN() * dist(rng), std::numeric_limits::quiet_NaN() * dist(rng)), false); + BOOST_TEST_EQ(isgreater(std::numeric_limits::infinity() * dist(rng), -std::numeric_limits::infinity() * dist(rng)), true); BOOST_TEST_EQ(isgreater(Dec(1), Dec(0)), true); BOOST_TEST_EQ(isgreater(Dec(-2), Dec(1)), false); @@ -86,10 +88,12 @@ void test_isgreater() template void test_isgreaterequal() { - BOOST_TEST_EQ(isgreaterequal(Dec(1), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(isgreaterequal(std::numeric_limits::quiet_NaN(), Dec(1)), false); - BOOST_TEST_EQ(isgreaterequal(std::numeric_limits::quiet_NaN(), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(isgreaterequal(std::numeric_limits::infinity(), -std::numeric_limits::infinity()), true); + std::uniform_int_distribution dist(1, 10); + + BOOST_TEST_EQ(isgreaterequal(Dec(1), std::numeric_limits::quiet_NaN() * dist(rng)), false); + BOOST_TEST_EQ(isgreaterequal(std::numeric_limits::quiet_NaN() * dist(rng), Dec(1)), false); + BOOST_TEST_EQ(isgreaterequal(std::numeric_limits::quiet_NaN() * dist(rng), std::numeric_limits::quiet_NaN()), false); + BOOST_TEST_EQ(isgreaterequal(std::numeric_limits::infinity() * dist(rng), -std::numeric_limits::infinity()), true); BOOST_TEST_EQ(isgreaterequal(Dec(1), Dec(0)), true); BOOST_TEST_EQ(isgreaterequal(Dec(-2), Dec(1)), false); @@ -115,10 +119,12 @@ void test_fmin() template void test_isless() { - BOOST_TEST_EQ(isless(Dec(1), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(isless(std::numeric_limits::quiet_NaN(), Dec(1)), false); - BOOST_TEST_EQ(isless(std::numeric_limits::quiet_NaN(), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(isless(std::numeric_limits::infinity(), -std::numeric_limits::infinity()), false); + std::uniform_int_distribution dist(1, 10); + + BOOST_TEST_EQ(isless(Dec(1), std::numeric_limits::quiet_NaN() * dist(rng)), false); + BOOST_TEST_EQ(isless(std::numeric_limits::quiet_NaN() * dist(rng), Dec(1)), false); + BOOST_TEST_EQ(isless(std::numeric_limits::quiet_NaN() * dist(rng), std::numeric_limits::quiet_NaN()), false); + BOOST_TEST_EQ(isless(std::numeric_limits::infinity() * dist(rng), -std::numeric_limits::infinity()), false); BOOST_TEST_EQ(isless(Dec(1), Dec(0)), false); BOOST_TEST_EQ(isless(Dec(-2), Dec(1)), true); @@ -128,10 +134,12 @@ void test_isless() template void test_islessequal() { - BOOST_TEST_EQ(islessequal(Dec(1), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(islessequal(std::numeric_limits::quiet_NaN(), Dec(1)), false); - BOOST_TEST_EQ(islessequal(std::numeric_limits::quiet_NaN(), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(islessequal(std::numeric_limits::infinity(), -std::numeric_limits::infinity()), false); + std::uniform_int_distribution dist(1, 10); + + BOOST_TEST_EQ(islessequal(Dec(1), std::numeric_limits::quiet_NaN() * dist(rng)), false); + BOOST_TEST_EQ(islessequal(std::numeric_limits::quiet_NaN() * dist(rng), Dec(1)), false); + BOOST_TEST_EQ(islessequal(std::numeric_limits::quiet_NaN() * dist(rng), std::numeric_limits::quiet_NaN()), false); + BOOST_TEST_EQ(islessequal(std::numeric_limits::infinity() * dist(rng), -std::numeric_limits::infinity()), false); BOOST_TEST_EQ(islessequal(Dec(1), Dec(0)), false); BOOST_TEST_EQ(islessequal(Dec(-2), Dec(1)), true); @@ -141,10 +149,12 @@ void test_islessequal() template void test_islessgreater() { - BOOST_TEST_EQ(islessgreater(Dec(1), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(islessgreater(std::numeric_limits::quiet_NaN(), Dec(1)), false); - BOOST_TEST_EQ(islessgreater(std::numeric_limits::quiet_NaN(), std::numeric_limits::quiet_NaN()), false); - BOOST_TEST_EQ(islessgreater(std::numeric_limits::infinity(), -std::numeric_limits::infinity()), true); + std::uniform_int_distribution dist(1, 10); + + BOOST_TEST_EQ(islessgreater(Dec(1), std::numeric_limits::quiet_NaN() * dist(rng)), false); + BOOST_TEST_EQ(islessgreater(std::numeric_limits::quiet_NaN() * dist(rng), Dec(1)), false); + BOOST_TEST_EQ(islessgreater(std::numeric_limits::quiet_NaN() * dist(rng), std::numeric_limits::quiet_NaN()), false); + BOOST_TEST_EQ(islessgreater(std::numeric_limits::infinity() * dist(rng), -std::numeric_limits::infinity()), true); BOOST_TEST_EQ(islessgreater(Dec(1), Dec(0)), true); BOOST_TEST_EQ(islessgreater(Dec(-2), Dec(1)), true); From 4c52fb2cf5b1d6ea2b0b518a501b64d062cab37e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 26 Sep 2025 09:05:24 +0200 Subject: [PATCH 244/967] Add boost.charconv to dependency listing --- .github/workflows/codecov.yml | 1 + 1 file changed, 1 insertion(+) diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml index e755038f1..511a4fc27 100644 --- a/.github/workflows/codecov.yml +++ b/.github/workflows/codecov.yml @@ -50,6 +50,7 @@ jobs: git submodule update --init libs/static_assert git submodule update --init libs/test git submodule update --init libs/random + git submodule update --init libs/charconv ./bootstrap.sh ./b2 headers - name: gcc-gcov-native From d405b7f4c60a2f8722b4afb1f26b1e105a1f211b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 26 Sep 2025 09:16:20 +0200 Subject: [PATCH 245/967] Fix decimal128_t test not being run --- test/test_assoc_legendre.cpp | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/test/test_assoc_legendre.cpp b/test/test_assoc_legendre.cpp index b94206994..fc2045368 100644 --- a/test/test_assoc_legendre.cpp +++ b/test/test_assoc_legendre.cpp @@ -43,11 +43,7 @@ int main() #include #include -#if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) -static constexpr auto N = static_cast(10U); // Number of trials -#else -static constexpr auto N = static_cast(128U >> 4U); // Number of trials -#endif +static constexpr std::size_t N {10}; static std::mt19937_64 rng(42); @@ -58,8 +54,8 @@ void test() { std::uniform_real_distribution dist(-1, 1); - constexpr auto max_iter {std::is_same::value ? N / 4 : N}; - for (std::size_t i {}; i < max_iter / 4; ++i) + constexpr auto max_iter {std::is_same::value ? static_cast(2) : N}; + for (std::size_t i {}; i < max_iter; ++i) { for (unsigned n {}; n < 4; ++n) { From 8ffd7a33f3a4f7449b8ab2eb45e8c0b0f27e7c0b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 26 Sep 2025 09:54:49 +0200 Subject: [PATCH 246/967] Fix narrowing errors with some types --- include/boost/decimal/detail/fenv_rounding.hpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 75b13520c..6297ba62a 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -37,8 +37,8 @@ template ::value, bool> = true> constexpr auto divmod(T dividend, T divisor) noexcept -> divmod_result { // Compilers usually can lump these together - T q {dividend / divisor}; - T r {dividend % divisor}; + const auto q {static_cast(dividend / divisor)}; + const auto r {static_cast(dividend % divisor)}; return {q, r}; } @@ -69,8 +69,8 @@ constexpr auto divmod(const u256& lhs, const u256& rhs) noexcept template constexpr auto divmod10(const T dividend) noexcept -> divmod10_result { - const T q {dividend / 10U}; - const T r {dividend - q * 10U}; + const auto q {static_cast(dividend / 10U)}; + const auto r {static_cast(dividend - q * 10U)}; return {q, static_cast(r)}; } From c29380964f25995258c13f6236b17f8642f01cf1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 26 Sep 2025 09:56:37 +0200 Subject: [PATCH 247/967] Ignore false negative --- include/boost/decimal/dpd_conversion.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/dpd_conversion.hpp b/include/boost/decimal/dpd_conversion.hpp index e5fd21a29..f5d802e76 100644 --- a/include/boost/decimal/dpd_conversion.hpp +++ b/include/boost/decimal/dpd_conversion.hpp @@ -753,7 +753,7 @@ constexpr auto to_dpd_d128(const DecimalType val) noexcept temp_sig /= 10U; } BOOST_DECIMAL_ASSERT(d[0] >= 0 && d[0] <= 9); - BOOST_DECIMAL_ASSERT(temp_sig == 0U); + BOOST_DECIMAL_ASSERT(temp_sig == 0U); // LCOV_EXCL_LINE : False Negative constexpr std::uint64_t leading_two_exp_bits_mask {0b11000000000000}; const auto leading_two_bits {(exp & leading_two_exp_bits_mask) >> 12U}; From 55d449a1b782924fc95c7af00d14aa0d2f70ace0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 29 Sep 2025 11:14:12 +0200 Subject: [PATCH 248/967] Add 1081 test set --- test/test_dpd_conversions.cpp | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/test/test_dpd_conversions.cpp b/test/test_dpd_conversions.cpp index 9dd1728f5..5dd4ddb7e 100644 --- a/test/test_dpd_conversions.cpp +++ b/test/test_dpd_conversions.cpp @@ -63,6 +63,31 @@ void test_float_range() } } +// See: https://github.com/cppalliance/decimal/issues/1081 +template +void test_git_issue_1081() +{ + std::mt19937_64 rng(42); + std::uniform_int_distribution dist(std::numeric_limits::min(), + std::numeric_limits::max()); + + for (std::size_t i {}; i < 1024; ++i) + { + const T val {dist(rng), std::numeric_limits::min_exponent}; + const T return_val {roundtrip(val)}; + BOOST_TEST_EQ(val, return_val); + } + + for (std::size_t i {}; i < 1024; ++i) + { + const T val {dist(rng), std::numeric_limits::max_exponent - std::numeric_limits::digits10 - 1}; + const T return_val {roundtrip(val)}; + BOOST_TEST_EQ(val, return_val); + } + + BOOST_TEST(roundtrip(std::numeric_limits::denorm_min())); +} + int main() { test(); @@ -83,5 +108,9 @@ int main() test_float_range(); test_float_range(); + test_git_issue_1081(); + test_git_issue_1081(); + test_git_issue_1081(); + return boost::report_errors(); } From 8272a01d283167aa75edf0021f5578c3b4454352 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 29 Sep 2025 11:14:20 +0200 Subject: [PATCH 249/967] Add comment in conversions --- include/boost/decimal/dpd_conversion.hpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/boost/decimal/dpd_conversion.hpp b/include/boost/decimal/dpd_conversion.hpp index f5d802e76..c77f9f215 100644 --- a/include/boost/decimal/dpd_conversion.hpp +++ b/include/boost/decimal/dpd_conversion.hpp @@ -770,9 +770,14 @@ constexpr auto to_dpd_d128(const DecimalType val) noexcept const auto d0_is_nine {d[0] == 9}; switch (leading_two_bits) { + // LCOV_EXCL_START + // The decimal128_t case never uses the combination field like the other types, + // since the significand always fits inside the allotted number of bits. + // I don't believe this path will ever be taken, but it's correct case 0U: combination_field_bits = d0_is_nine ? 0b11001 : 0b11000; break; + // LCOV_EXCL_STOP case 1U: combination_field_bits = d0_is_nine ? 0b11011 : 0b11010; break; From 2e0afb6b45e35a3159c9e621723a34bc6d09ee3d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 26 Sep 2025 16:19:45 +0200 Subject: [PATCH 250/967] Force runtime evaluation --- test/github_issue_1035.cpp | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/test/github_issue_1035.cpp b/test/github_issue_1035.cpp index 90d3774fc..7bde48d2e 100644 --- a/test/github_issue_1035.cpp +++ b/test/github_issue_1035.cpp @@ -10,6 +10,7 @@ #include #include +#include #ifdef BOOST_DECIMAL_USE_MODULE import boost.decimal; @@ -20,7 +21,10 @@ using namespace boost::decimal::literals; int main() { - const auto previously_inf {"5e+95"_DF}; + std::mt19937_64 rng(42); + std::uniform_int_distribution dist(1, 1); + + const auto previously_inf {"5e+95"_DF * dist(rng)}; BOOST_TEST_EQ(previously_inf, "500000e+90"_DF); #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION @@ -28,16 +32,16 @@ int main() #else fesetround(rounding_mode::fe_dec_downward); - BOOST_TEST_EQ("5e+50"_DF - "4e+40"_DF, "4.999999e+50"_DF); - BOOST_TEST_EQ("5e+95"_DF - "4e-100"_DF, "4.999999e+95"_DF); - BOOST_TEST_EQ("-5e+95"_DF + "4e-100"_DF, "-4.999999e+95"_DF); - BOOST_TEST_EQ("-5e+95"_DL + "4e-100"_DL, "-4.999999999999999999999999999999999e+95"_DL); + BOOST_TEST_EQ("5e+50"_DF * dist(rng) - "4e+40"_DF, "4.999999e+50"_DF); + BOOST_TEST_EQ("5e+95"_DF * dist(rng) - "4e-100"_DF, "4.999999e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DF * dist(rng) + "4e-100"_DF, "-4.999999e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DL * dist(rng) + "4e-100"_DL, "-4.999999999999999999999999999999999e+95"_DL); fesetround(rounding_mode::fe_dec_upward); - BOOST_TEST_EQ("5e+50"_DF + "4e+40"_DF, "5.000001e+50"_DF); - BOOST_TEST_EQ("5e+95"_DF + "4e-100"_DF, "5.000001e+95"_DF); - BOOST_TEST_EQ("-5e+95"_DF - "4e-100"_DF, "-5.000001e+95"_DF); - BOOST_TEST_EQ("-5e+95"_DL - "4e-100"_DL, "-5.000000000000000000000000000000001e+95"_DL); + BOOST_TEST_EQ("5e+50"_DF * dist(rng) + "4e+40"_DF, "5.000001e+50"_DF); + BOOST_TEST_EQ("5e+95"_DF * dist(rng) + "4e-100"_DF, "5.000001e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DF * dist(rng) - "4e-100"_DF, "-5.000001e+95"_DF); + BOOST_TEST_EQ("-5e+95"_DL * dist(rng) - "4e-100"_DL, "-5.000000000000000000000000000000001e+95"_DL); return boost::report_errors(); From c2f5a7f4664b7bad557b6544008415987ea2ff2d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 08:24:44 +0200 Subject: [PATCH 251/967] Define BOOST_DECIMAL_LDBL_BITS to 0 when unsupported --- include/boost/decimal/detail/bit_layouts.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/detail/bit_layouts.hpp b/include/boost/decimal/detail/bit_layouts.hpp index 8bc05fb2a..e9742a2a9 100644 --- a/include/boost/decimal/detail/bit_layouts.hpp +++ b/include/boost/decimal/detail/bit_layouts.hpp @@ -110,6 +110,7 @@ struct IEEEl2bits #define BOOST_DECIMAL_LDBL_BITS 64 #else // Unsupported long double representation +# define BOOST_DECIMAL_LDBL_BITS 0 # define BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE #endif From db3700d8b34152f88ba835f156666389a90b9596 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 08:45:36 +0200 Subject: [PATCH 252/967] Add error overload --- include/boost/decimal/detail/ryu/ryu_generic_128.hpp | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp index a21594653..80a8a3e3d 100644 --- a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp +++ b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp @@ -346,6 +346,17 @@ BOOST_DECIMAL_CXX20_CONSTEXPR auto floating_point_to_fd128(long dou return generic_binary_to_decimal(bits, 112, 15, false); } +#elif BOOST_DECIMAL_LDBL_BITS == 0 + +template <> +BOOST_DECIMAL_CXX20_CONSTEXPR auto floating_point_to_fd128(long double val) noexcept -> floating_decimal_128 +{ + static_assert(1==0, "Unsupported configuration"); + + auto bits = bit_cast(val); + return generic_binary_to_decimal(bits, 112, 15, false); +} + #endif #if defined(BOOST_DECIMAL_HAS_FLOAT128) && !defined(BOOST_DECIMAL_LDBL_IS_FLOAT128) From 20013562a6e6e69c0245dbda9d2e3ded6718becb Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 08:56:41 +0200 Subject: [PATCH 253/967] Disable conversion to long double when unsupported --- include/boost/decimal/decimal128_t.hpp | 5 +++++ include/boost/decimal/decimal32_t.hpp | 5 +++++ include/boost/decimal/decimal64_t.hpp | 5 +++++ include/boost/decimal/decimal_fast128_t.hpp | 3 +++ include/boost/decimal/decimal_fast32_t.hpp | 5 +++++ include/boost/decimal/decimal_fast64_t.hpp | 4 ++++ 6 files changed, 27 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 708a0348d..458f1f3c0 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -282,7 +282,10 @@ BOOST_DECIMAL_EXPORT class decimal128_t final // 3.2.6 Conversion to floating-point type explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 explicit constexpr operator std::float16_t() const noexcept; @@ -943,10 +946,12 @@ BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator double() const noexcept return to_float(*this); } +#ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t::operator long double() const noexcept { return to_float(*this); } +#endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 constexpr decimal128_t::operator std::float16_t() const noexcept diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 9888dbb00..10a26cd4e 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -295,7 +295,10 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special // 3.2.6 Conversion to floating-point type explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 explicit constexpr operator std::float16_t() const noexcept; @@ -1876,11 +1879,13 @@ BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator double() const noexcept return to_float(*this); } +#ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator long double() const noexcept { // Double already has more range and precision than a decimal32_t will ever be able to provide return static_cast(to_float(*this)); } +#endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 constexpr decimal32_t::operator std::float16_t() const noexcept diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 77f427dea..7cedc61f2 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -289,7 +289,10 @@ BOOST_DECIMAL_EXPORT class decimal64_t final // 3.2.6 Conversion to a floating-point type explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 explicit constexpr operator std::float16_t() const noexcept; @@ -856,10 +859,12 @@ BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator double() const noexcept return to_float(*this); } +#ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t::operator long double() const noexcept { return to_float(*this); } +#endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 constexpr decimal64_t::operator std::float16_t() const noexcept diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index a24527891..d3e5dfe5b 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -344,7 +344,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 explicit constexpr operator std::float16_t() const noexcept; diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 90b11681a..9ccd9046f 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -336,7 +336,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final // 3.2.6 Conversion to a floating-point type explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 explicit constexpr operator std::float16_t() const noexcept; @@ -1285,11 +1288,13 @@ BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator double() const noexcept return to_float(*this); } +#ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t::operator long double() const noexcept { // The precision and range of double already exceeds what decimal_fast32_t can provide return static_cast(to_float(*this)); } +#endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 constexpr decimal_fast32_t::operator std::float16_t() const noexcept diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 7ab959a73..b9aa32f73 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -287,7 +287,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator float() const noexcept; explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator double() const noexcept; + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit BOOST_DECIMAL_CXX20_CONSTEXPR operator long double() const noexcept; + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 explicit constexpr operator std::float16_t() const noexcept; @@ -849,10 +851,12 @@ BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator double() const noexcept return to_float(*this); } +#ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t::operator long double() const noexcept { return to_float(*this); } +#endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 constexpr decimal_fast64_t::operator std::float16_t() const noexcept From 93e930904d49a9c3aec3c2c9f3eb4c06fb2cbcb5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 08:56:50 +0200 Subject: [PATCH 254/967] Adjust tests for bad long doubles --- test/roundtrip_decimal128.cpp | 2 +- test/roundtrip_decimal128_fast.cpp | 2 +- test/roundtrip_decimal32.cpp | 7 +++++-- test/roundtrip_decimal32_fast.cpp | 7 +++++-- test/roundtrip_decimal64.cpp | 9 ++++++--- test/test_cmath.cpp | 12 ++++++------ test/test_decimal32_fast_basis.cpp | 2 +- test/test_decimal64_fast_basis.cpp | 2 ++ test/test_edges_and_behave.cpp | 3 +++ test/test_erf.cpp | 2 +- test/test_float_conversion.cpp | 3 +++ test/test_lgamma.cpp | 2 ++ test/test_tgamma.cpp | 2 ++ 13 files changed, 38 insertions(+), 17 deletions(-) diff --git a/test/roundtrip_decimal128.cpp b/test/roundtrip_decimal128.cpp index 0085ef27c..a5e2df1e9 100644 --- a/test/roundtrip_decimal128.cpp +++ b/test/roundtrip_decimal128.cpp @@ -406,7 +406,7 @@ int main() test_roundtrip_float_stream(); test_roundtrip_float_stream(); - #if BOOST_DECIMAL_LDBL_BITS < 128 + #if BOOST_DECIMAL_LDBL_BITS < 128 && !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) test_conversion_from_float(); test_conversion_to_float(); test_roundtrip_conversion_float(); diff --git a/test/roundtrip_decimal128_fast.cpp b/test/roundtrip_decimal128_fast.cpp index 4a42d2af2..0a2227728 100644 --- a/test/roundtrip_decimal128_fast.cpp +++ b/test/roundtrip_decimal128_fast.cpp @@ -408,7 +408,7 @@ int main() test_roundtrip_float_stream(); test_roundtrip_float_stream(); - #if BOOST_DECIMAL_LDBL_BITS < 128 + #if BOOST_DECIMAL_LDBL_BITS < 128 && !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) test_conversion_from_float(); test_conversion_to_float(); test_roundtrip_conversion_float(); diff --git a/test/roundtrip_decimal32.cpp b/test/roundtrip_decimal32.cpp index 247eee8eb..42fe101c5 100644 --- a/test/roundtrip_decimal32.cpp +++ b/test/roundtrip_decimal32.cpp @@ -276,11 +276,9 @@ int main() test_conversion_to_float(); test_conversion_to_float(); - test_conversion_to_float(); test_roundtrip_conversion_float(); test_roundtrip_conversion_float(); - test_roundtrip_conversion_float(); test_roundtrip_integer_stream(); test_roundtrip_integer_stream(); @@ -291,7 +289,12 @@ int main() test_roundtrip_float_stream(); test_roundtrip_float_stream(); + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + test_conversion_to_float(); + test_roundtrip_conversion_float(); test_roundtrip_float_stream(); + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 test_conversion_to_float(); diff --git a/test/roundtrip_decimal32_fast.cpp b/test/roundtrip_decimal32_fast.cpp index 54520aeb7..e04ea532b 100644 --- a/test/roundtrip_decimal32_fast.cpp +++ b/test/roundtrip_decimal32_fast.cpp @@ -283,11 +283,9 @@ int main() test_conversion_to_float(); test_conversion_to_float(); - test_conversion_to_float(); test_roundtrip_conversion_float(); test_roundtrip_conversion_float(); - test_roundtrip_conversion_float(); test_roundtrip_integer_stream(); test_roundtrip_integer_stream(); @@ -298,7 +296,12 @@ int main() test_roundtrip_float_stream(); test_roundtrip_float_stream(); + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + test_conversion_to_float(); + test_roundtrip_conversion_float(); test_roundtrip_float_stream(); + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 test_conversion_to_float(); diff --git a/test/roundtrip_decimal64.cpp b/test/roundtrip_decimal64.cpp index f3d459cb0..448bcb954 100644 --- a/test/roundtrip_decimal64.cpp +++ b/test/roundtrip_decimal64.cpp @@ -294,15 +294,12 @@ int main() test_conversion_from_float(); test_conversion_from_float(); - test_conversion_from_float(); test_conversion_to_float(); test_conversion_to_float(); - test_conversion_to_float(); test_roundtrip_conversion_float(); test_roundtrip_conversion_float(); - test_roundtrip_conversion_float(); test_roundtrip_integer_stream(); test_roundtrip_integer_stream(); @@ -313,7 +310,13 @@ int main() test_roundtrip_float_stream(); test_roundtrip_float_stream(); + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + test_conversion_from_float(); + test_conversion_to_float(); + test_roundtrip_conversion_float(); test_roundtrip_float_stream(); + #endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 test_conversion_to_float(); diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index 61704e608..d60098c87 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -1523,16 +1523,16 @@ int main() test_llround(); test_nextafter(); - test_nexttoward(); - test_nextafter(); - test_nexttoward(); - test_nextafter(); - test_nexttoward(); - test_nextafter(); + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + test_nexttoward(); + test_nexttoward(); + test_nexttoward(); test_nexttoward(); + #endif test_pow(); test_pow(); diff --git a/test/test_decimal32_fast_basis.cpp b/test/test_decimal32_fast_basis.cpp index e627e552f..141b46c9a 100644 --- a/test/test_decimal32_fast_basis.cpp +++ b/test/test_decimal32_fast_basis.cpp @@ -446,7 +446,7 @@ int main() test_construct_from_float(); test_construct_from_float(); - #if BOOST_DECIMAL_LDBL_BITS != 128 + #if BOOST_DECIMAL_LDBL_BITS != 128 && !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) test_construct_from_float(); #endif diff --git a/test/test_decimal64_fast_basis.cpp b/test/test_decimal64_fast_basis.cpp index 989cb7259..ccf65afc0 100644 --- a/test/test_decimal64_fast_basis.cpp +++ b/test/test_decimal64_fast_basis.cpp @@ -413,7 +413,9 @@ int main() test_construct_from_float(); test_construct_from_float(); + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE test_construct_from_float(); + #endif #if defined(BOOST_DECIMAL_HAS_FLOAT128) && (!defined(__clang_major__) || __clang_major__ >= 13) test_construct_from_float<__float128>(); #endif diff --git a/test/test_edges_and_behave.cpp b/test/test_edges_and_behave.cpp index cb5d835c4..302ca434e 100644 --- a/test/test_edges_and_behave.cpp +++ b/test/test_edges_and_behave.cpp @@ -86,7 +86,10 @@ namespace local const auto local_nan_to_construct_f = decimal_type { std::numeric_limits::quiet_NaN() * static_cast(dist(gen)) }; const auto local_nan_to_construct_d = decimal_type { std::numeric_limits::quiet_NaN() * static_cast(dist(gen)) }; + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE const auto local_nan_to_construct_ld = decimal_type { std::numeric_limits::quiet_NaN() * static_cast(dist(gen)) }; + #endif const auto result_nan_construct_is_ok = ( diff --git a/test/test_erf.cpp b/test/test_erf.cpp index 9e5c9b859..d3e4cf0fd 100644 --- a/test/test_erf.cpp +++ b/test/test_erf.cpp @@ -1136,7 +1136,7 @@ int main() test_erfc(); test_erfc(); - #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) && BOOST_DECIMAL_LDBL_BITS != 128 && !defined(__i386__) && !defined(_WIN32) + #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) && BOOST_DECIMAL_LDBL_BITS != 128 && !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) && !defined(__i386__) && !defined(_WIN32) test_erf(); test_erfc(); #endif diff --git a/test/test_float_conversion.cpp b/test/test_float_conversion.cpp index fbbc7d41f..72b0fda1b 100644 --- a/test/test_float_conversion.cpp +++ b/test/test_float_conversion.cpp @@ -343,7 +343,10 @@ int main() test_compute_float80_128(); test_generic_binary_to_decimal(); test_generic_binary_to_decimal(); + + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE test_generic_binary_to_decimal(); + #endif test_parser(); test_hex_integer(); diff --git a/test/test_lgamma.cpp b/test/test_lgamma.cpp index acedf41c6..76d95ca47 100644 --- a/test/test_lgamma.cpp +++ b/test/test_lgamma.cpp @@ -530,11 +530,13 @@ auto main() -> int } { + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE const auto result_lgamma128_is_ok = local::test_lgamma_128(4096); BOOST_TEST(result_lgamma128_is_ok); result_is_ok = (result_lgamma128_is_ok && result_is_ok); + #endif } result_is_ok = ((boost::report_errors() == 0) && result_is_ok); diff --git a/test/test_tgamma.cpp b/test/test_tgamma.cpp index 239fab07a..262dc8e99 100644 --- a/test/test_tgamma.cpp +++ b/test/test_tgamma.cpp @@ -665,6 +665,7 @@ auto main() -> int result_is_ok = (result_tgamma64_is_ok && result_is_ok); } + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE { const auto result_tgamma128_lo_is_ok = local::test_tgamma_128_lo(4096); const auto result_tgamma128_hi_is_ok = local::test_tgamma_128_hi(0x30'000); @@ -684,6 +685,7 @@ auto main() -> int result_is_ok = (result_tgamma128_lo_is_ok && result_tgamma128_hi_is_ok && result_is_ok); } + #endif result_is_ok = ((boost::report_errors() == 0) && result_is_ok); From 88311a0ed6f6dc4cec65f09db29e4a803c20fb33 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 09:01:05 +0200 Subject: [PATCH 255/967] Delete construction from long double --- include/boost/decimal/decimal128_t.hpp | 4 ++++ include/boost/decimal/decimal32_t.hpp | 4 ++++ include/boost/decimal/decimal64_t.hpp | 4 ++++ include/boost/decimal/decimal_fast128_t.hpp | 4 ++++ include/boost/decimal/decimal_fast32_t.hpp | 4 ++++ include/boost/decimal/decimal_fast64_t.hpp | 4 ++++ 6 files changed, 24 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 458f1f3c0..81c942934 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -223,6 +223,10 @@ BOOST_DECIMAL_EXPORT class decimal128_t final #endif BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t(Float val) noexcept; + #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + explicit constexpr decimal128_t(long double val) noexcept = delete; + #endif + template BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal128_t&); diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 10a26cd4e..e762187af 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -229,6 +229,10 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special #endif BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t(Float val) noexcept; + #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + explicit constexpr decimal32_t(long double val) noexcept = delete; + #endif + template BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal32_t&); diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 7cedc61f2..11f2503f5 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -241,6 +241,10 @@ BOOST_DECIMAL_EXPORT class decimal64_t final #endif BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t(Float val) noexcept; + #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + explicit constexpr decimal64_t(long double val) noexcept = delete; + #endif + template BOOST_DECIMAL_CXX20_CONSTEXPR auto operator=(const Float& val) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_floating_point_v, Float, decimal64_t&); diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index d3e5dfe5b..e55d5100a 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -180,6 +180,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #endif explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(Float val) noexcept; + #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(long double val) noexcept = delete; + #endif + friend constexpr auto direct_init_d128(significand_type significand, exponent_type exponent, bool sign) noexcept -> decimal_fast128_t; // Classification functions diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 9ccd9046f..0d8388edc 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -161,6 +161,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template , bool> = true> explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t(Float val) noexcept; + #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + explicit constexpr decimal_fast32_t(long double val) noexcept = delete; + #endif + constexpr decimal_fast32_t(const decimal_fast32_t& val) noexcept = default; constexpr decimal_fast32_t(decimal_fast32_t&& val) noexcept = default; constexpr auto operator=(const decimal_fast32_t& val) noexcept -> decimal_fast32_t& = default; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index b9aa32f73..34477362b 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -191,6 +191,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final #endif explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t(Float val) noexcept; + #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + explicit constexpr decimal_fast64_t(long double val) noexcept = delete; + #endif + friend constexpr auto direct_init_d64(decimal_fast64_t::significand_type significand, decimal_fast64_t::exponent_type exponent, bool sign) noexcept -> decimal_fast64_t; // Classification functions From 47b70bfdafd9ea5408233760941ff8de004f89ca Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 09:03:55 +0200 Subject: [PATCH 256/967] Fix missing ifndef --- include/boost/decimal/decimal_fast128_t.hpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index e55d5100a..abde71e8f 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1244,10 +1244,12 @@ BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator double() const noexcep return to_float(*this); } +#ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t::operator long double() const noexcept { return to_float(*this); } +#endif #ifdef BOOST_DECIMAL_HAS_FLOAT16 constexpr decimal_fast128_t::operator std::float16_t() const noexcept From 29e1e9aaa0d2b22627df926e37a0e2bd92bf479f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 09:06:49 +0200 Subject: [PATCH 257/967] Replace static assert --- include/boost/decimal/detail/ryu/ryu_generic_128.hpp | 2 +- test/test_acosh.cpp | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp index 80a8a3e3d..e14e0a69a 100644 --- a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp +++ b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp @@ -351,7 +351,7 @@ BOOST_DECIMAL_CXX20_CONSTEXPR auto floating_point_to_fd128(long dou template <> BOOST_DECIMAL_CXX20_CONSTEXPR auto floating_point_to_fd128(long double val) noexcept -> floating_decimal_128 { - static_assert(1==0, "Unsupported configuration"); + BOOST_DECIMAL_ASSERT_MSG(1==0, "Unsupported configuration"); auto bits = bit_cast(val); return generic_binary_to_decimal(bits, 112, 15, false); diff --git a/test/test_acosh.cpp b/test/test_acosh.cpp index 77307da65..4728515a1 100644 --- a/test/test_acosh.cpp +++ b/test/test_acosh.cpp @@ -226,8 +226,8 @@ auto main() -> int local::test_acosh ( static_cast(INT32_C(16) * INT32_C(262144)), - 1.0L + static_cast(std::numeric_limits::epsilon()) * 10.0L, - 1.0L + static_cast(std::numeric_limits::epsilon()) * 100.0L + 1.0L + static_cast(std::numeric_limits::epsilon()) * 10.0L, + 1.0L + static_cast(std::numeric_limits::epsilon()) * 100.0L ); const auto result_tiny_is_ok = local::test_acosh(static_cast(INT32_C(4096)), 1.001L, 1.1L); From d47e45a84492b0eb9203794738dcdebf55191a62 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 09:18:31 +0200 Subject: [PATCH 258/967] More test fixes --- test/github_issue_426.cpp | 9 ++++++++- test/roundtrip_decimal128.cpp | 8 ++++++++ test/roundtrip_decimal128_fast.cpp | 8 ++++++++ test/test_asinh.cpp | 6 +++--- test/test_atanh.cpp | 10 +++++----- test/test_erf.cpp | 7 +++++++ test/test_lgamma.cpp | 8 +++++++- test/test_tgamma.cpp | 6 +++++- 8 files changed, 51 insertions(+), 11 deletions(-) diff --git a/test/github_issue_426.cpp b/test/github_issue_426.cpp index 9c17f446a..26a0405f1 100644 --- a/test/github_issue_426.cpp +++ b/test/github_issue_426.cpp @@ -7,7 +7,14 @@ #include #include -#if defined(__GNUC__) && __GNUC__ >= 5 && __cplusplus > 202002L +#ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE + +int main() +{ + return 0; +} + +#elif defined(__GNUC__) && __GNUC__ >= 5 && __cplusplus > 202002L #include diff --git a/test/roundtrip_decimal128.cpp b/test/roundtrip_decimal128.cpp index a5e2df1e9..2df3c74f7 100644 --- a/test/roundtrip_decimal128.cpp +++ b/test/roundtrip_decimal128.cpp @@ -196,6 +196,8 @@ void test_roundtrip_conversion_float() } } +#if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) + template <> void test_roundtrip_conversion_float() { @@ -247,6 +249,8 @@ void test_roundtrip_conversion_float() } } +#endif + template void test_roundtrip_integer_stream() { @@ -308,6 +312,8 @@ void test_roundtrip_float_stream() } } +#if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) + template <> void test_roundtrip_float_stream() { @@ -340,6 +346,8 @@ void test_roundtrip_float_stream() } } +#endif + void test_roundtrip_conversion_decimal32_t() { std::mt19937_64 rng(42); diff --git a/test/roundtrip_decimal128_fast.cpp b/test/roundtrip_decimal128_fast.cpp index 0a2227728..47af2f7db 100644 --- a/test/roundtrip_decimal128_fast.cpp +++ b/test/roundtrip_decimal128_fast.cpp @@ -196,6 +196,8 @@ void test_roundtrip_conversion_float() } } +#if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) + template <> void test_roundtrip_conversion_float() { @@ -249,6 +251,8 @@ void test_roundtrip_conversion_float() BOOST_TEST(isnan(decimal_fast128_t(std::numeric_limits::quiet_NaN() * dist(rng)))); } +#endif + template void test_roundtrip_integer_stream() { @@ -310,6 +314,8 @@ void test_roundtrip_float_stream() } } +#if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) + template <> void test_roundtrip_float_stream() { @@ -342,6 +348,8 @@ void test_roundtrip_float_stream() } } +#endif + void test_roundtrip_conversion_decimal32_t() { std::mt19937_64 rng(42); diff --git a/test/test_asinh.cpp b/test/test_asinh.cpp index e32415087..7f017ae20 100644 --- a/test/test_asinh.cpp +++ b/test/test_asinh.cpp @@ -67,7 +67,7 @@ namespace local return result_is_ok; } - auto test_asinh(const std::int32_t tol_factor, const bool negate, const long double range_lo, const long double range_hi) -> bool + auto test_asinh(const std::int32_t tol_factor, const bool negate, const float range_lo, const float range_hi) -> bool { using decimal_type = boost::decimal::decimal32_t; @@ -230,8 +230,8 @@ auto main() -> int ( static_cast(INT32_C(16) * INT32_C(262144)), false, - static_cast(fourth_root_epsilon) / 40.0L, - static_cast(fourth_root_epsilon) * 40.0L + static_cast(static_cast(fourth_root_epsilon) / 40.0L), + static_cast(static_cast(fourth_root_epsilon) * 40.0L) ); const auto result_tiny_is_ok = local::test_asinh(static_cast(INT32_C(4096)), false, 1.001L, 1.1L); diff --git a/test/test_atanh.cpp b/test/test_atanh.cpp index a188aec07..f24212586 100644 --- a/test/test_atanh.cpp +++ b/test/test_atanh.cpp @@ -68,7 +68,7 @@ namespace local return result_is_ok; } - auto test_atanh(const std::int32_t tol_factor, const bool negate, const long double range_lo, const long double range_hi) -> bool + auto test_atanh(const std::int32_t tol_factor, const bool negate, const float range_lo, const float range_hi) -> bool { using decimal_type = boost::decimal::decimal32_t; @@ -231,8 +231,8 @@ auto main() -> int ( static_cast(INT32_C(128)), false, - static_cast(fourth_root_epsilon) / 32.0L, - static_cast(fourth_root_epsilon) * 32.0L + static_cast(static_cast(fourth_root_epsilon) / 32.0L), + static_cast(static_cast(fourth_root_epsilon) * 32.0L) ); const auto result_eps_near_one_is_ok = @@ -240,8 +240,8 @@ auto main() -> int ( static_cast(INT32_C(256)), false, - static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) * 32.0L)), - static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) / 32.0L)) + static_cast(static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) * 32.0L))), + static_cast(static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) / 32.0L))) ); const auto result_tiny_is_ok = local::test_atanh(static_cast(INT32_C(96)), false, 0.001L, 0.1L); diff --git a/test/test_erf.cpp b/test/test_erf.cpp index d3e4cf0fd..c4b844722 100644 --- a/test/test_erf.cpp +++ b/test/test_erf.cpp @@ -220,6 +220,7 @@ void test_erf() BOOST_TEST_EQ(erf(T{120}), T{1} * dist(rng)); } +#if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) template <> void test_erf() { @@ -457,6 +458,8 @@ void test_erf() BOOST_TEST_EQ(erf(decimal128_t{120}), decimal128_t{1} * dist(rng)); } +#endif + template void test_erfc() { @@ -638,6 +641,8 @@ void test_erfc() BOOST_TEST_EQ(erfc(T{120}), T{0} * dist(rng)); } +#if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) + template <> void test_erfc() { @@ -875,6 +880,8 @@ void test_erfc() BOOST_TEST_EQ(erfc(decimal128_t{120}), decimal128_t{0} * dist(rng)); } +#endif + int main() { #ifdef BOOST_DECIMAL_GENERATE_CONSTANT_SIGS diff --git a/test/test_lgamma.cpp b/test/test_lgamma.cpp index 76d95ca47..358d6b327 100644 --- a/test/test_lgamma.cpp +++ b/test/test_lgamma.cpp @@ -116,7 +116,7 @@ namespace local } template - auto test_lgamma(const int tol_factor, const long double range_lo, const long double range_hi) -> bool + auto test_lgamma(const int tol_factor, const float range_lo, const float range_hi) -> bool { using decimal_type = DecimalType; using float_type = FloatType; @@ -174,6 +174,8 @@ namespace local return result_is_ok; } + #if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) + auto test_lgamma_neg32(const int tol_factor) -> bool { // Table[N[Log[Gamma[-23/100 - n]], 32], {n, 1, 12, 1}] @@ -236,6 +238,8 @@ namespace local return result_is_ok; } + #endif + template auto test_lgamma_edge() -> bool { @@ -510,6 +514,7 @@ auto main() -> int result_is_ok = (result_lgamma_is_ok && result_is_ok); } + #if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) { const auto result_neg32_is_ok = local::test_lgamma_neg32(2048); @@ -517,6 +522,7 @@ auto main() -> int result_is_ok = (result_neg32_is_ok && result_is_ok); } + #endif { using decimal_type = boost::decimal::decimal32_t; diff --git a/test/test_tgamma.cpp b/test/test_tgamma.cpp index 262dc8e99..01e27a740 100644 --- a/test/test_tgamma.cpp +++ b/test/test_tgamma.cpp @@ -84,7 +84,7 @@ namespace local } template - auto test_tgamma(const int tol_factor, const long double range_lo, const long double range_hi) -> bool + auto test_tgamma(const int tol_factor, const float range_lo, const float range_hi) -> bool { using decimal_type = DecimalType; using float_type = FloatType; @@ -142,6 +142,7 @@ namespace local return result_is_ok; } +#if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) auto test_tgamma_neg32(const int tol_factor) -> bool { // Table[N[Gamma[-23/100 - n], 32], {n, 1, 7, 1}] @@ -196,6 +197,7 @@ namespace local return result_is_ok; } +#endif auto test_tgamma_small_ui32() -> bool { @@ -622,6 +624,7 @@ auto main() -> int result_is_ok = (result_tgamma_is_ok && result_is_ok); } + #if !defined(BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE) { const auto result_neg32_is_ok = local::test_tgamma_neg32(768); @@ -629,6 +632,7 @@ auto main() -> int result_is_ok = (result_neg32_is_ok && result_is_ok); } + #endif { const auto result_ui32_is_ok = local::test_tgamma_small_ui32(); From 1d39b38534368d9b7aca92d615589ca9569a035e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 09:45:27 +0200 Subject: [PATCH 259/967] More removals of long doubles --- test/test_asinh.cpp | 4 ++-- test/test_atanh.cpp | 8 ++++---- test/test_edges_and_behave.cpp | 4 ++-- test/test_frexp_ldexp.cpp | 8 ++++---- 4 files changed, 12 insertions(+), 12 deletions(-) diff --git a/test/test_asinh.cpp b/test/test_asinh.cpp index 7f017ae20..1d4817dff 100644 --- a/test/test_asinh.cpp +++ b/test/test_asinh.cpp @@ -230,8 +230,8 @@ auto main() -> int ( static_cast(INT32_C(16) * INT32_C(262144)), false, - static_cast(static_cast(fourth_root_epsilon) / 40.0L), - static_cast(static_cast(fourth_root_epsilon) * 40.0L) + static_cast(static_cast(fourth_root_epsilon) / 40.0), + static_cast(static_cast(fourth_root_epsilon) * 40.0) ); const auto result_tiny_is_ok = local::test_asinh(static_cast(INT32_C(4096)), false, 1.001L, 1.1L); diff --git a/test/test_atanh.cpp b/test/test_atanh.cpp index f24212586..8bfc9f906 100644 --- a/test/test_atanh.cpp +++ b/test/test_atanh.cpp @@ -231,8 +231,8 @@ auto main() -> int ( static_cast(INT32_C(128)), false, - static_cast(static_cast(fourth_root_epsilon) / 32.0L), - static_cast(static_cast(fourth_root_epsilon) * 32.0L) + static_cast(static_cast(fourth_root_epsilon) / 32.0), + static_cast(static_cast(fourth_root_epsilon) * 32.0) ); const auto result_eps_near_one_is_ok = @@ -240,8 +240,8 @@ auto main() -> int ( static_cast(INT32_C(256)), false, - static_cast(static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) * 32.0L))), - static_cast(static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) / 32.0L))) + static_cast(static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) * 32.0L))), + static_cast(static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) / 32.0L))) ); const auto result_tiny_is_ok = local::test_atanh(static_cast(INT32_C(96)), false, 0.001L, 0.1L); diff --git a/test/test_edges_and_behave.cpp b/test/test_edges_and_behave.cpp index 302ca434e..9a3f8f938 100644 --- a/test/test_edges_and_behave.cpp +++ b/test/test_edges_and_behave.cpp @@ -514,5 +514,5 @@ auto my_one () -> boost::decimal::decimal32_t& { static boost::decimal::decimal3 auto my_inf () -> boost::decimal::decimal32_t& { static boost::decimal::decimal32_t val_inf = std::numeric_limits::infinity(); return val_inf; } auto my_nan () -> boost::decimal::decimal32_t& { static boost::decimal::decimal32_t val_nan = std::numeric_limits::quiet_NaN(); return val_nan; } auto my_pi () -> boost::decimal::decimal32_t& { static boost::decimal::decimal32_t val_pi = boost::decimal::numbers::pi_v; return val_pi; } -auto my_a () -> boost::decimal::decimal32_t& { static boost::decimal::decimal32_t val_a { 1.234567e5L }; return val_a; } -auto my_b () -> boost::decimal::decimal32_t& { static boost::decimal::decimal32_t val_b { 9.876543e-2L }; return val_b; } +auto my_a () -> boost::decimal::decimal32_t& { static boost::decimal::decimal32_t val_a { 1.234567e5 }; return val_a; } +auto my_b () -> boost::decimal::decimal32_t& { static boost::decimal::decimal32_t val_b { 9.876543e-2 }; return val_b; } diff --git a/test/test_frexp_ldexp.cpp b/test/test_frexp_ldexp.cpp index f9637f985..8d0436602 100644 --- a/test/test_frexp_ldexp.cpp +++ b/test/test_frexp_ldexp.cpp @@ -175,7 +175,7 @@ namespace local } template - auto test_frexp_ldexp_exact_impl(long double f_in, long double fr_ctrl, int nr_ctrl) -> bool + auto test_frexp_ldexp_exact_impl(double f_in, double fr_ctrl, int nr_ctrl) -> bool { using decimal_type = boost::decimal::decimal32_t; @@ -210,9 +210,9 @@ namespace local // 7.625L, 0.953125L, 3 auto result_frexp_ldexp_exact_is_ok = true; - result_frexp_ldexp_exact_is_ok = (test_frexp_ldexp_exact_impl(+7.625L, +0.953125L, 3) && result_frexp_ldexp_exact_is_ok); - result_frexp_ldexp_exact_is_ok = (test_frexp_ldexp_exact_impl(+0.125L, +0.5L, -2) && result_frexp_ldexp_exact_is_ok); - result_frexp_ldexp_exact_is_ok = (test_frexp_ldexp_exact_impl(-0.125L, -0.5L, -2) && result_frexp_ldexp_exact_is_ok); + result_frexp_ldexp_exact_is_ok = (test_frexp_ldexp_exact_impl(+7.625, +0.953125, 3) && result_frexp_ldexp_exact_is_ok); + result_frexp_ldexp_exact_is_ok = (test_frexp_ldexp_exact_impl(+0.125, +0.5, -2) && result_frexp_ldexp_exact_is_ok); + result_frexp_ldexp_exact_is_ok = (test_frexp_ldexp_exact_impl(-0.125, -0.5, -2) && result_frexp_ldexp_exact_is_ok); return result_frexp_ldexp_exact_is_ok; } From 4da1093f6f218f8bee55667a2e7b741d10d02613 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 09:48:29 +0200 Subject: [PATCH 260/967] Fix warnings --- test/test_asinh.cpp | 12 ++++++------ test/test_lgamma.cpp | 14 +++++++------- 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/test/test_asinh.cpp b/test/test_asinh.cpp index 1d4817dff..d5c3c4380 100644 --- a/test/test_asinh.cpp +++ b/test/test_asinh.cpp @@ -67,7 +67,7 @@ namespace local return result_is_ok; } - auto test_asinh(const std::int32_t tol_factor, const bool negate, const float range_lo, const float range_hi) -> bool + auto test_asinh(const std::int32_t tol_factor, const bool negate, const double range_lo, const double range_hi) -> bool { using decimal_type = boost::decimal::decimal32_t; @@ -234,11 +234,11 @@ auto main() -> int static_cast(static_cast(fourth_root_epsilon) * 40.0) ); - const auto result_tiny_is_ok = local::test_asinh(static_cast(INT32_C(4096)), false, 1.001L, 1.1L); - const auto result_small_is_ok = local::test_asinh(static_cast(INT32_C(96)), false, 0.1L, 1.59L); - const auto result_medium_is_ok = local::test_asinh(static_cast(INT32_C(48)), false, 1.59L, 10.1L); - const auto result_medium_neg_is_ok = local::test_asinh(static_cast(INT32_C(48)), true, 1.59L, 10.1L); - const auto result_large_is_ok = local::test_asinh(static_cast(INT32_C(48)), false, 1.0E+01L, 1.0E+19L); + const auto result_tiny_is_ok = local::test_asinh(static_cast(INT32_C(4096)), false, 1.001, 1.1); + const auto result_small_is_ok = local::test_asinh(static_cast(INT32_C(96)), false, 0.1, 1.59); + const auto result_medium_is_ok = local::test_asinh(static_cast(INT32_C(48)), false, 1.59, 10.1); + const auto result_medium_neg_is_ok = local::test_asinh(static_cast(INT32_C(48)), true, 1.59, 10.1); + const auto result_large_is_ok = local::test_asinh(static_cast(INT32_C(48)), false, 1.0E+01, 1.0E+19); BOOST_TEST(result_eps_is_ok); BOOST_TEST(result_tiny_is_ok); diff --git a/test/test_lgamma.cpp b/test/test_lgamma.cpp index 358d6b327..588e64bd9 100644 --- a/test/test_lgamma.cpp +++ b/test/test_lgamma.cpp @@ -116,7 +116,7 @@ namespace local } template - auto test_lgamma(const int tol_factor, const float range_lo, const float range_hi) -> bool + auto test_lgamma(const int tol_factor, const double range_lo, const double range_hi) -> bool { using decimal_type = DecimalType; using float_type = FloatType; @@ -452,7 +452,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal32_t; using float_type = float; - const auto result_lgamma_is_ok = local::test_lgamma(512, 0.01L, 0.9L); + const auto result_lgamma_is_ok = local::test_lgamma(512, 0.01, 0.9); BOOST_TEST(result_lgamma_is_ok); @@ -463,7 +463,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal32_t; using float_type = float; - const auto result_lgamma_is_ok = local::test_lgamma(512, 1.1L, 1.9L); + const auto result_lgamma_is_ok = local::test_lgamma(512, 1.1, 1.9); BOOST_TEST(result_lgamma_is_ok); @@ -474,7 +474,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal32_t; using float_type = float; - const auto result_lgamma_is_ok = local::test_lgamma(512, 2.1L, 123.4L); + const auto result_lgamma_is_ok = local::test_lgamma(512, 2.1, 123.4); BOOST_TEST(result_lgamma_is_ok); @@ -485,7 +485,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal64_t; using float_type = double; - const auto result_lgamma_is_ok = local::test_lgamma(4096, 0.01L, 0.9L); + const auto result_lgamma_is_ok = local::test_lgamma(4096, 0.01, 0.9); BOOST_TEST(result_lgamma_is_ok); @@ -496,7 +496,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal64_t; using float_type = double; - const auto result_lgamma_is_ok = local::test_lgamma(4096, 1.1L, 1.9L); + const auto result_lgamma_is_ok = local::test_lgamma(4096, 1.1, 1.9); BOOST_TEST(result_lgamma_is_ok); @@ -507,7 +507,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal64_t; using float_type = double; - const auto result_lgamma_is_ok = local::test_lgamma(4096, 2.1L, 123.4L); + const auto result_lgamma_is_ok = local::test_lgamma(4096, 2.1, 123.4); BOOST_TEST(result_lgamma_is_ok); From 0017b8939cf808082c471c0aee09a9e904e5f3ae Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 12:03:05 +0200 Subject: [PATCH 261/967] More warning fixes --- test/test_atanh.cpp | 8 ++++---- test/test_edges_and_behave.cpp | 8 +++++--- test/test_frexp_ldexp.cpp | 4 ++-- test/test_tgamma.cpp | 12 ++++++------ 4 files changed, 17 insertions(+), 15 deletions(-) diff --git a/test/test_atanh.cpp b/test/test_atanh.cpp index 8bfc9f906..1367fe7c2 100644 --- a/test/test_atanh.cpp +++ b/test/test_atanh.cpp @@ -68,7 +68,7 @@ namespace local return result_is_ok; } - auto test_atanh(const std::int32_t tol_factor, const bool negate, const float range_lo, const float range_hi) -> bool + auto test_atanh(const std::int32_t tol_factor, const bool negate, const double range_lo, const double range_hi) -> bool { using decimal_type = boost::decimal::decimal32_t; @@ -244,9 +244,9 @@ auto main() -> int static_cast(static_cast( static_cast(1.0L) - static_cast(static_cast(fourth_root_epsilon) / 32.0L))) ); - const auto result_tiny_is_ok = local::test_atanh(static_cast(INT32_C(96)), false, 0.001L, 0.1L); - const auto result_medium_is_ok = local::test_atanh(static_cast(INT32_C(96)), true, 0.1L, 0.9L); - const auto result_medium_neg_is_ok = local::test_atanh(static_cast(INT32_C(96)), false, 0.1L, 0.9L); + const auto result_tiny_is_ok = local::test_atanh(static_cast(INT32_C(96)), false, 0.001, 0.1); + const auto result_medium_is_ok = local::test_atanh(static_cast(INT32_C(96)), true, 0.1, 0.9); + const auto result_medium_neg_is_ok = local::test_atanh(static_cast(INT32_C(96)), false, 0.1, 0.9); BOOST_TEST(result_eps_is_ok); BOOST_TEST(result_eps_near_one_is_ok); diff --git a/test/test_edges_and_behave.cpp b/test/test_edges_and_behave.cpp index 9a3f8f938..76621d036 100644 --- a/test/test_edges_and_behave.cpp +++ b/test/test_edges_and_behave.cpp @@ -95,7 +95,9 @@ namespace local ( isnan(local_nan_to_construct_f) && isnan(local_nan_to_construct_d) + #ifndef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE && isnan(local_nan_to_construct_ld) + #endif ); BOOST_TEST(result_nan_construct_is_ok); @@ -105,7 +107,7 @@ namespace local { const auto sum_nan_01 = local_nan_to_construct_f + 1; const auto sum_nan_02 = local_nan_to_construct_f + decimal_type { 2, 0 }; - const auto sum_nan_03 = local_nan_to_construct_f + decimal_type { 3.0L }; + const auto sum_nan_03 = local_nan_to_construct_f + decimal_type { 3.0 }; const auto result_sum_nan_is_ok = (isnan(sum_nan_01) && isnan(sum_nan_02) && isnan(sum_nan_03)); @@ -117,7 +119,7 @@ namespace local { const auto dif_nan_01 = local_nan_to_construct_f - 1; const auto dif_nan_02 = local_nan_to_construct_f - decimal_type { 2, 0 }; - const auto dif_nan_03 = local_nan_to_construct_f - decimal_type { 3.0L }; + const auto dif_nan_03 = local_nan_to_construct_f - decimal_type { 3.0 }; const auto result_dif_nan_is_ok = (isnan(dif_nan_01) && isnan(dif_nan_02) && isnan(dif_nan_03)); @@ -320,7 +322,7 @@ namespace local const decimal_type c = a + b; - const auto result_prec_add_vary_is_ok = (c > decimal_type(123456.709876543L)); + const auto result_prec_add_vary_is_ok = (c > decimal_type(123456.709876543)); BOOST_TEST(result_prec_add_vary_is_ok); diff --git a/test/test_frexp_ldexp.cpp b/test/test_frexp_ldexp.cpp index 8d0436602..d918dad71 100644 --- a/test/test_frexp_ldexp.cpp +++ b/test/test_frexp_ldexp.cpp @@ -262,10 +262,10 @@ namespace local auto result_is_ok = true; { - auto ldexp_dec = ldexp(static_cast(0.0L), 0); + auto ldexp_dec = ldexp(static_cast(0.0), 0); auto result_zero_is_ok = (ldexp_dec == 0); - ldexp_dec = ldexp(static_cast(0.0L), 3); + ldexp_dec = ldexp(static_cast(0.0), 3); result_zero_is_ok = ((ldexp_dec == 0) && result_zero_is_ok); result_is_ok = (result_zero_is_ok && result_is_ok); diff --git a/test/test_tgamma.cpp b/test/test_tgamma.cpp index 01e27a740..68efb5c9b 100644 --- a/test/test_tgamma.cpp +++ b/test/test_tgamma.cpp @@ -84,7 +84,7 @@ namespace local } template - auto test_tgamma(const int tol_factor, const float range_lo, const float range_hi) -> bool + auto test_tgamma(const int tol_factor, const double range_lo, const double range_hi) -> bool { using decimal_type = DecimalType; using float_type = FloatType; @@ -573,7 +573,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal32_t; using float_type = float; - const auto result_tgamma_is_ok = local::test_tgamma(768, 0.01L, 0.9L); + const auto result_tgamma_is_ok = local::test_tgamma(768, 0.01, 0.9); BOOST_TEST(result_tgamma_is_ok); @@ -584,7 +584,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal32_t; using float_type = float; - const auto result_tgamma_is_ok = local::test_tgamma(768, 2.1L, 23.4L); + const auto result_tgamma_is_ok = local::test_tgamma(768, 2.1, 23.4); BOOST_TEST(result_tgamma_is_ok); @@ -595,7 +595,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal_fast32_t; using float_type = float; - const auto result_tgamma_is_ok = local::test_tgamma(768, 2.1L, 23.4L); + const auto result_tgamma_is_ok = local::test_tgamma(768, 2.1, 23.4); BOOST_TEST(result_tgamma_is_ok); @@ -606,7 +606,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal64_t; using float_type = double; - const auto result_tgamma_is_ok = local::test_tgamma(4096, 0.001L, 0.9L); + const auto result_tgamma_is_ok = local::test_tgamma(4096, 0.001, 0.9); BOOST_TEST(result_tgamma_is_ok); @@ -617,7 +617,7 @@ auto main() -> int using decimal_type = boost::decimal::decimal64_t; using float_type = double; - const auto result_tgamma_is_ok = local::test_tgamma(4096, 2.1L, 78.9L); + const auto result_tgamma_is_ok = local::test_tgamma(4096, 2.1, 78.9); BOOST_TEST(result_tgamma_is_ok); From af807ebb5a4f95ffe55a59bfe6d7a8a140809629 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 30 Sep 2025 12:04:30 +0200 Subject: [PATCH 262/967] Final warning fix --- test/test_edges_and_behave.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_edges_and_behave.cpp b/test/test_edges_and_behave.cpp index 76621d036..69b2aae2b 100644 --- a/test/test_edges_and_behave.cpp +++ b/test/test_edges_and_behave.cpp @@ -306,7 +306,7 @@ namespace local const decimal_type c = a + b; - const auto result_prec_add_is_ok = (c == static_cast(123456.8L)); + const auto result_prec_add_is_ok = (c == static_cast(123456.8)); BOOST_TEST(result_prec_add_is_ok); From a5581d2872962db0862cf65c677d2920291f434f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 7 Oct 2025 08:15:21 +0200 Subject: [PATCH 263/967] Add test set --- test/Jamfile | 1 + test/github_issue_1087.cpp | 30 ++++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+) create mode 100644 test/github_issue_1087.cpp diff --git a/test/Jamfile b/test/Jamfile index 99ee847fe..b1817f974 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -66,6 +66,7 @@ run github_issue_1035.cpp ; run github_issue_1054.cpp ; run github_issue_1055.cpp ; run github_issue_1057.cpp ; +compile-fail github_issue_1087.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; run random_decimal32_comp.cpp ; diff --git a/test/github_issue_1087.cpp b/test/github_issue_1087.cpp new file mode 100644 index 000000000..a22c614e7 --- /dev/null +++ b/test/github_issue_1087.cpp @@ -0,0 +1,30 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1087 + +#include +#include + +using namespace boost::decimal; + +template +void test() +{ + T val {-3, 3, true}; + BOOST_TEST_EQ(val, T(UINT32_C(3), 3, true)); +} + +int main() +{ + test(); + test(); + test(); + + test(); + test(); + test(); + + return 0; +} From d1c97b60f7ab4ec108d9f63661bbd8e5bb90cee0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 7 Oct 2025 08:29:14 +0200 Subject: [PATCH 264/967] Add more helpful message to constructor saying it cant be used --- include/boost/decimal/decimal128_t.hpp | 7 +++++++ include/boost/decimal/decimal32_t.hpp | 7 +++++++ include/boost/decimal/decimal64_t.hpp | 7 +++++++ include/boost/decimal/decimal_fast128_t.hpp | 7 +++++++ include/boost/decimal/decimal_fast32_t.hpp | 3 +++ include/boost/decimal/decimal_fast64_t.hpp | 7 +++++++ 6 files changed, 38 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 81c942934..98d7e529e 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -257,6 +257,13 @@ BOOST_DECIMAL_EXPORT class decimal128_t final #endif constexpr decimal128_t(T1 coeff, T2 exp, bool sign = false) noexcept; + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal128_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index e762187af..7a590ef29 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -282,6 +282,13 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special #endif constexpr decimal32_t(T1 coeff, T2 exp, bool sign = false) noexcept; + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal32_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 11f2503f5..cec503a9b 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -319,6 +319,13 @@ BOOST_DECIMAL_EXPORT class decimal64_t final #endif constexpr decimal64_t(T1 coeff, T2 exp, bool sign = false) noexcept; + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal64_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index abde71e8f..d3c1c7c5a 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -157,6 +157,13 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #endif constexpr decimal_fast128_t(T1 coeff, T2 exp, bool sign = false) noexcept; + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal_fast128_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 0d8388edc..c0dcc54cf 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -150,6 +150,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template && detail::is_integral_v, bool> = true> constexpr decimal_fast32_t(T1 coeff, T2 exp, bool sign = false) noexcept; + template && detail::is_integral_v, bool> = true> + constexpr decimal_fast32_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + template && detail::is_integral_v, bool> = true> constexpr decimal_fast32_t(T1 coeff, T2 exp) noexcept; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 34477362b..32a6c5039 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -168,6 +168,13 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final #endif constexpr decimal_fast64_t(T1 coeff, T2 exp, bool sign = false) noexcept; + #ifdef BOOST_DECIMAL_HAS_CONCEPTS + template + #else + template && detail::is_integral_v, bool> = true> + #endif + constexpr decimal_fast64_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else From c4eab90582a2a6562472ae36092166e6357ccd49 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 7 Oct 2025 08:41:57 +0200 Subject: [PATCH 265/967] Add additional comments on underflow, overflow, and non-finite values --- doc/modules/ROOT/pages/basics.adoc | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/doc/modules/ROOT/pages/basics.adoc b/doc/modules/ROOT/pages/basics.adoc index ea21d8f37..4064805fa 100644 --- a/doc/modules/ROOT/pages/basics.adoc +++ b/doc/modules/ROOT/pages/basics.adoc @@ -28,11 +28,19 @@ This is designed to reduce confusion (e.g. what would be the resulting sign of ` [souce, c++] ---- -boost::decimal::decimal32_t a {1, 1}; // constructs 1e1 = 10 -boost::decimal::decimal32_t b {-2, -1}; // constructs -2e-2 or -0.2 -boost::decimal::decimal32_t c {2, -1, true}; // also constructs -2e-1 or -0.2 -boost::decimal::decimal32_t e {5, 5}; // constructs 5x10^5 -boost::decimal::decimal32_t f {1234, -3} // constructs 1.234 or 1234x10^-3 +boost::decimal::decimal32_t a {1, 1}; // constructs 1e1 = 10 +boost::decimal::decimal32_t b {-2, -1}; // constructs -2e-2 or -0.2 +boost::decimal::decimal32_t c {2U, -1, true}; // also constructs -2e-1 or -0.2 (Note: The coefficient must be an unsigned type) +boost::decimal::decimal32_t e {5, 5}; // constructs 5x10^5 +boost::decimal::decimal32_t f {1234, -3} // constructs 1.234 or 1234x10^-3 +---- + +Overflow and underflow are handled the same way that they are with binary floating point numbers i.e. they will construct an infinity or a zero. + +[source, c++] +---- +boost::decimal::decimal64_t oveflow_value {100, 10000}; // Constructs +infinity +boost::decimal::decimal64_t underflow_value {100, -10000}; // Constructs 0 ---- === Construction from Integer @@ -56,6 +64,9 @@ For example: boost::decimal::decimal128_t pi {3.14}; ---- +Construction from non-finite values (e.g. `std::numeric_limits::quiet_NaN()`) will yield the same non-finite value in the resulting decimal value. +Overflow or underflow will construct infinity or 0. + NOTE: Due to the differences in decimal and binary floating point numbers there may be a difference in the resulting representation in decimal format, and thus it is not recommended to construct from binary floating point numbers == Fundamental Operations From 4a25581ce97d260f708d23d08065afdab3db6c0c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 7 Oct 2025 08:42:08 +0200 Subject: [PATCH 266/967] Add doc comments as real examples --- examples/basic_construction.cpp | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/examples/basic_construction.cpp b/examples/basic_construction.cpp index 560e1a8c4..b3ff18d10 100644 --- a/examples/basic_construction.cpp +++ b/examples/basic_construction.cpp @@ -40,6 +40,25 @@ int main() std::cout << "Floats are not equal" << std::endl; } + // Demonstration of the overflow and underflow handling + constexpr decimal64_t oveflow_value {100, 10000}; + if (isinf(oveflow_value)) + { + std::cout << "Overflow constructs infinity" << std::endl; + } + + constexpr decimal64_t underflow_value {100, -10000}; + if (underflow_value == 0) + { + std::cout << "Underflow constructs zero" << std::endl; + } + + const decimal32_t non_finite_from_float {std::numeric_limits::quiet_NaN()}; + if (isnan(non_finite_from_float)) + { + std::cout << "NaN constructs NaN" << std::endl; + } + return 0; } From c04034ad8753fb9feb09f464ff5b448662bb73f3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 7 Oct 2025 09:10:51 +0200 Subject: [PATCH 267/967] Replace false with impossible condition for older compiler support --- include/boost/decimal/decimal128_t.hpp | 2 +- include/boost/decimal/decimal32_t.hpp | 2 +- include/boost/decimal/decimal64_t.hpp | 2 +- include/boost/decimal/decimal_fast128_t.hpp | 2 +- include/boost/decimal/decimal_fast32_t.hpp | 2 +- include/boost/decimal/decimal_fast64_t.hpp | 2 +- 6 files changed, 6 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 98d7e529e..6483c1a2e 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -262,7 +262,7 @@ BOOST_DECIMAL_EXPORT class decimal128_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal128_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + constexpr decimal128_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } #ifdef BOOST_DECIMAL_HAS_CONCEPTS template diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 7a590ef29..9aea4680c 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -287,7 +287,7 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal32_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + constexpr decimal32_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } #ifdef BOOST_DECIMAL_HAS_CONCEPTS template diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index cec503a9b..9e26c57d6 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -324,7 +324,7 @@ BOOST_DECIMAL_EXPORT class decimal64_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal64_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + constexpr decimal64_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } #ifdef BOOST_DECIMAL_HAS_CONCEPTS template diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index d3c1c7c5a..14825ca17 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -162,7 +162,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal_fast128_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + constexpr decimal_fast128_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } #ifdef BOOST_DECIMAL_HAS_CONCEPTS template diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index c0dcc54cf..71405f541 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -151,7 +151,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final constexpr decimal_fast32_t(T1 coeff, T2 exp, bool sign = false) noexcept; template && detail::is_integral_v, bool> = true> - constexpr decimal_fast32_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + constexpr decimal_fast32_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } template && detail::is_integral_v, bool> = true> constexpr decimal_fast32_t(T1 coeff, T2 exp) noexcept; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 32a6c5039..c6584c289 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -173,7 +173,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal_fast64_t(T1, T2, bool) noexcept { static_assert(false, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } + constexpr decimal_fast64_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } #ifdef BOOST_DECIMAL_HAS_CONCEPTS template From 2f3915b1a34cc6034f34ccb229e5c0ed2b83391a Mon Sep 17 00:00:00 2001 From: asensi <13171207+asensi@users.noreply.github.com> Date: Tue, 7 Oct 2025 21:47:16 +0200 Subject: [PATCH 268/967] Fix the name of a variable --- examples/basic_construction.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/examples/basic_construction.cpp b/examples/basic_construction.cpp index b3ff18d10..2f9cc1119 100644 --- a/examples/basic_construction.cpp +++ b/examples/basic_construction.cpp @@ -41,8 +41,8 @@ int main() } // Demonstration of the overflow and underflow handling - constexpr decimal64_t oveflow_value {100, 10000}; - if (isinf(oveflow_value)) + constexpr decimal64_t overflow_value {100, 10000}; + if (isinf(overflow_value)) { std::cout << "Overflow constructs infinity" << std::endl; } From 374328ea0d55de8b1fa2cef34b487f88d8ec7757 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 7 Oct 2025 13:43:21 +0200 Subject: [PATCH 269/967] Add reproducer test set --- test/Jamfile | 1 + test/github_issue_1091.cpp | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) create mode 100644 test/github_issue_1091.cpp diff --git a/test/Jamfile b/test/Jamfile index b1817f974..e7a56586c 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -67,6 +67,7 @@ run github_issue_1054.cpp ; run github_issue_1055.cpp ; run github_issue_1057.cpp ; compile-fail github_issue_1087.cpp ; +run github_issue_1091.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; run random_decimal32_comp.cpp ; diff --git a/test/github_issue_1091.cpp b/test/github_issue_1091.cpp new file mode 100644 index 000000000..c4d2cbf01 --- /dev/null +++ b/test/github_issue_1091.cpp @@ -0,0 +1,34 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1091 + +#include +#include + +using namespace boost::decimal; + +template +void test() +{ + constexpr T one {1u, 0}; + T low {std::numeric_limits::lowest()}; + BOOST_TEST(!isinf(low)); + + low *= 2; + + BOOST_TEST(low < one); + BOOST_TEST(one > low); + BOOST_TEST(isinf(low)); +} + +int main() +{ + test(); + test(); + test(); + + return boost::report_errors(); +} + From 5986e7b3f7c23b049e480242d5e91f201d965339 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 7 Oct 2025 13:44:09 +0200 Subject: [PATCH 270/967] Fix negative sign overflows becoming positive --- include/boost/decimal/decimal128_t.hpp | 1 + include/boost/decimal/decimal32_t.hpp | 2 ++ include/boost/decimal/decimal64_t.hpp | 2 ++ 3 files changed, 5 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 6483c1a2e..50ec691ab 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -779,6 +779,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept else { bits_ = exp < 0 ? zero : detail::d128_inf_mask; + bits_.high |= sign ? detail::d128_sign_mask : UINT64_C(0); } } } diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 9aea4680c..334e5e41b 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -700,7 +700,9 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI } else { + // Reset the value and make sure to preserve the sign of 0/inf bits_ = exp < 0 ? UINT32_C(0) : detail::d32_inf_mask; + bits_ |= sign ? detail::d32_sign_mask : UINT32_C(0); } } } diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 9e26c57d6..afb7f2172 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -693,7 +693,9 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept } else { + // Reset the value and make sure to preserve the sign of 0/inf bits_ = exp < 0 ? UINT64_C(0) : detail::d64_inf_mask; + bits_ |= sign ? detail::d64_sign_mask : UINT64_C(0); } } } From 2f2e175a6bd2a759004c27244a359babe445ed87 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 8 Oct 2025 10:37:52 +0200 Subject: [PATCH 271/967] Add positive direction as well --- test/github_issue_1091.cpp | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/test/github_issue_1091.cpp b/test/github_issue_1091.cpp index c4d2cbf01..f9e43e218 100644 --- a/test/github_issue_1091.cpp +++ b/test/github_issue_1091.cpp @@ -21,6 +21,15 @@ void test() BOOST_TEST(low < one); BOOST_TEST(one > low); BOOST_TEST(isinf(low)); + + T high {std::numeric_limits::max()}; + BOOST_TEST(!isinf(high)); + + high *= 2; + + BOOST_TEST(high > one); + BOOST_TEST(one < high); + BOOST_TEST(isinf(high)); } int main() From 4229a7d22b12ea4d1c1749a34ac41b433e595510 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 8 Oct 2025 10:39:59 +0200 Subject: [PATCH 272/967] Test negative denorm being flushed to zero --- test/github_issue_1091.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/test/github_issue_1091.cpp b/test/github_issue_1091.cpp index f9e43e218..0c5b80162 100644 --- a/test/github_issue_1091.cpp +++ b/test/github_issue_1091.cpp @@ -30,6 +30,14 @@ void test() BOOST_TEST(high > one); BOOST_TEST(one < high); BOOST_TEST(isinf(high)); + + T min {-std::numeric_limits::denorm_min()}; + + min /= 2; + + BOOST_TEST(min < one); + BOOST_TEST(min == (one - one)); + BOOST_TEST(signbit(min)); } int main() From 61fb6cb5a1d812d55f1b128ccf5a9ac5acbde378 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 8 Oct 2025 11:23:12 +0200 Subject: [PATCH 273/967] Fix sign on non-finite DPD conversions --- include/boost/decimal/dpd_conversion.hpp | 36 ++++++++++++++++-------- 1 file changed, 24 insertions(+), 12 deletions(-) diff --git a/include/boost/decimal/dpd_conversion.hpp b/include/boost/decimal/dpd_conversion.hpp index c77f9f215..96253a876 100644 --- a/include/boost/decimal/dpd_conversion.hpp +++ b/include/boost/decimal/dpd_conversion.hpp @@ -435,21 +435,26 @@ constexpr auto from_dpd_d32(const std::uint32_t dpd) noexcept static_assert(std::is_same::value || std::is_same::value, "Target decimal type must be 32-bits"); + const auto sign {(dpd & detail::d32_sign_mask) != 0}; + // First we check for non-finite values // Since they are in the same initial format as BID it's easy to check with our existing masks if ((dpd & detail::d32_inf_mask) == detail::d32_inf_mask) { if ((dpd & detail::d32_snan_mask) == detail::d32_snan_mask) { - return std::numeric_limits::signaling_NaN(); + return sign ? -std::numeric_limits::signaling_NaN() : + std::numeric_limits::signaling_NaN(); } else if ((dpd & detail::d32_nan_mask) == detail::d32_nan_mask) { - return std::numeric_limits::quiet_NaN(); + return sign ? -std::numeric_limits::quiet_NaN() : + std::numeric_limits::quiet_NaN(); } else { - return std::numeric_limits::infinity(); + return sign ? -std::numeric_limits::infinity() : + std::numeric_limits::infinity(); } } @@ -458,7 +463,6 @@ constexpr auto from_dpd_d32(const std::uint32_t dpd) noexcept constexpr std::uint32_t dpd_d32_combination_mask {UINT32_C(0b0'11111'000000'0000000000'0000000000)}; // The bit lengths are the same as used in the standard bid format - const auto sign {(dpd & detail::d32_sign_mask) != 0}; const auto combination_field_bits {(dpd & dpd_d32_combination_mask) >> 26U}; const auto exponent_field_bits {(dpd & dpd_d32_exponent_mask) >> 20U}; const auto significand_bits {(dpd & dpd_d32_significand_mask)}; @@ -635,21 +639,26 @@ constexpr auto from_dpd_d64(const std::uint64_t dpd) noexcept static_assert(std::is_same::value || std::is_same::value, "Target decimal type must be 64-bits"); + const auto sign {(dpd & detail::d64_sign_mask) != 0}; + // First we check for non-finite values // Since they are in the same initial format as BID it's easy to check with our existing masks if ((dpd & detail::d64_inf_mask) == detail::d64_inf_mask) { if ((dpd & detail::d64_snan_mask) == detail::d64_snan_mask) { - return std::numeric_limits::signaling_NaN(); + return sign ? -std::numeric_limits::signaling_NaN() : + std::numeric_limits::signaling_NaN(); } else if ((dpd & detail::d64_nan_mask) == detail::d64_nan_mask) { - return std::numeric_limits::quiet_NaN(); + return sign ? -std::numeric_limits::quiet_NaN() : + std::numeric_limits::quiet_NaN(); } else { - return std::numeric_limits::infinity(); + return sign ? -std::numeric_limits::infinity() : + std::numeric_limits::infinity(); } } @@ -659,7 +668,6 @@ constexpr auto from_dpd_d64(const std::uint64_t dpd) noexcept constexpr std::uint64_t dpd_d64_exponent_field_mask {UINT64_C(0b0'00000'11111111'0000000000'0000000000'0000000000'0000000000'0000000000)}; constexpr std::uint64_t dpd_d64_significand_field_mask {UINT64_C(0b0'00000'00000000'1111111111'1111111111'1111111111'1111111111'1111111111)}; - const auto sign {(dpd & detail::d64_sign_mask) != 0}; const auto combination_field_bits {(dpd & dpd_d64_combination_field_mask) >> 58U}; const auto exponent_field_bits {(dpd & dpd_d64_exponent_field_mask) >> 50U}; auto significand_bits {(dpd & dpd_d64_significand_field_mask)}; @@ -841,19 +849,24 @@ constexpr auto from_dpd_d128(const int128::uint128_t dpd) noexcept static_assert(std::is_same::value || std::is_same::value, "Target decimal type must be 128-bits"); + const auto sign {(dpd.high & detail::d128_sign_mask) != 0}; + if ((dpd & detail::d128_inf_mask) == detail::d128_inf_mask) { if ((dpd & detail::d128_snan_mask) == detail::d128_snan_mask) { - return std::numeric_limits::signaling_NaN(); + return sign ? -std::numeric_limits::signaling_NaN() : + std::numeric_limits::signaling_NaN(); } else if ((dpd & detail::d128_nan_mask) == detail::d128_nan_mask) { - return std::numeric_limits::quiet_NaN(); + return sign ? -std::numeric_limits::quiet_NaN() : + std::numeric_limits::quiet_NaN(); } else { - return std::numeric_limits::infinity(); + return sign ? -std::numeric_limits::infinity() : + std::numeric_limits::infinity(); } } @@ -862,7 +875,6 @@ constexpr auto from_dpd_d128(const int128::uint128_t dpd) noexcept constexpr int128::uint128_t d128_dpd_significand_mask {UINT64_C(0b1111111111'1111111111'1111111111'1111111111'111111), UINT64_MAX}; // The bit lengths are the same as used in the standard bid format - const auto sign {(dpd.high & detail::d128_sign_mask) != 0}; const auto combination_field_bits {(dpd.high & d128_dpd_combination_field_mask_high_bits) >> 58U}; const auto exponent_field_bits {(dpd.high & d128_dpd_exponent_mask_high_bits) >> 46U}; auto significand_bits {(dpd & d128_dpd_significand_mask)}; From 8a8c3685a7115dbbb7cb8fe2139ebb32f6dac593 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 11:28:51 +0200 Subject: [PATCH 274/967] Update format tests to shortest representation --- test/test_format_fmtlib.cpp | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index 1efd552c7..33de3e276 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -130,9 +130,9 @@ void test_general() template void test_fixed() { - BOOST_TEST_EQ(fmt::format("{:f}", T {21u, 6, true}), "-21000000.000000"); - BOOST_TEST_EQ(fmt::format("{:f}", T {211u, 6, true}), "-211000000.000000"); - BOOST_TEST_EQ(fmt::format("{:f}", T {2111u, 6, true}), "-2111000000.000000"); + BOOST_TEST_EQ(fmt::format("{:f}", T {21u, 6, true}), "-21000000"); + BOOST_TEST_EQ(fmt::format("{:f}", T {211u, 6, true}), "-211000000"); + BOOST_TEST_EQ(fmt::format("{:f}", T {2111u, 6, true}), "-2111000000"); BOOST_TEST_EQ(fmt::format("{:.0f}", T {21u, 6, true}), std::string{"-21000000"}); BOOST_TEST_EQ(fmt::format("{:.0f}", T {211u, 6, true}), std::string{"-211000000"}); @@ -161,13 +161,13 @@ void test_fixed() template void test_scientific() { - BOOST_TEST_EQ(fmt::format("{:e}", T {21u, 6, true}), "-2.100000e+07"); - BOOST_TEST_EQ(fmt::format("{:e}", T {211u, 6, true}), "-2.110000e+08"); - BOOST_TEST_EQ(fmt::format("{:e}", T {2111u, 6, true}), "-2.111000e+09"); + BOOST_TEST_EQ(fmt::format("{:e}", T {21u, 6, true}), "-2.1e+07"); + BOOST_TEST_EQ(fmt::format("{:e}", T {211u, 6, true}), "-2.11e+08"); + BOOST_TEST_EQ(fmt::format("{:e}", T {2111u, 6, true}), "-2.111e+09"); - BOOST_TEST_EQ(fmt::format("{:E}", T {21u, 6, true}), "-2.100000E+07"); - BOOST_TEST_EQ(fmt::format("{:E}", T {211u, 6, true}), "-2.110000E+08"); - BOOST_TEST_EQ(fmt::format("{:E}", T {2111u, 6, true}), "-2.111000E+09"); + BOOST_TEST_EQ(fmt::format("{:E}", T {21u, 6, true}), "-2.1E+07"); + BOOST_TEST_EQ(fmt::format("{:E}", T {211u, 6, true}), "-2.11E+08"); + BOOST_TEST_EQ(fmt::format("{:E}", T {2111u, 6, true}), "-2.111E+09"); BOOST_TEST_EQ(fmt::format("{:.0E}", T {0}), "0E+00"); BOOST_TEST_EQ(fmt::format("{:e}", std::numeric_limits::infinity()), "inf"); From a54001e5ec795ad63cb5b8d9da077b0fac441a81 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 11:29:03 +0200 Subject: [PATCH 275/967] Fix handling of unspecified precision --- include/boost/decimal/fmt_format.hpp | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 0b4e71fbe..63d746b2e 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -36,7 +36,7 @@ template constexpr auto parse_impl(ParseContext &ctx) { auto sign_character = sign_option::minus; - int ctx_precision = 6; + int ctx_precision = -1; boost::decimal::chars_format fmt = boost::decimal::chars_format::general; bool is_upper = false; int padding_digits = 0; @@ -203,7 +203,15 @@ struct formatter // LCOV_EXCL_STOP } - const auto r = boost::decimal::to_chars(buffer_front, buffer.data() + buffer.size(), v, fmt, ctx_precision); + boost::decimal::to_chars_result r {}; + if (ctx_precision != -1) + { + r = boost::decimal::to_chars(buffer_front, buffer.data() + buffer.size(), v, fmt, ctx_precision); + } + else + { + r = boost::decimal::to_chars(buffer_front, buffer.data() + buffer.size(), v, fmt); + } std::string s(buffer.data(), static_cast(r.ptr - buffer.data())); From 79ef9abe143013fb9c44bd5be0a4a983ea4875fe Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 11:30:57 +0200 Subject: [PATCH 276/967] Update tests for shortest rep --- test/test_format.cpp | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/test/test_format.cpp b/test/test_format.cpp index 03927e18e..9988a5728 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -84,9 +84,9 @@ void test_general() template void test_fixed() { - BOOST_TEST_EQ(std::format("{:f}", T {-21, 6}), "-21000000.000000"); - BOOST_TEST_EQ(std::format("{:f}", T {-211, 6}), "-211000000.000000"); - BOOST_TEST_EQ(std::format("{:f}", T {-2111, 6}), "-2111000000.000000"); + BOOST_TEST_EQ(std::format("{:f}", T {-21, 6}), "-21000000"); + BOOST_TEST_EQ(std::format("{:f}", T {-211, 6}), "-211000000"); + BOOST_TEST_EQ(std::format("{:f}", T {-2111, 6}), "-2111000000"); BOOST_TEST_EQ(std::format("{:.0f}", T {-21, 6}), std::string{"-21000000"}); BOOST_TEST_EQ(std::format("{:.0f}", T {-211, 6}), std::string{"-211000000"}); @@ -115,13 +115,13 @@ void test_fixed() template void test_scientific() { - BOOST_TEST_EQ(std::format("{:e}", T {-21, 6}), "-2.100000e+07"); - BOOST_TEST_EQ(std::format("{:e}", T {-211, 6}), "-2.110000e+08"); - BOOST_TEST_EQ(std::format("{:e}", T {-2111, 6}), "-2.111000e+09"); + BOOST_TEST_EQ(std::format("{:e}", T {-21, 6}), "-2.1e+07"); + BOOST_TEST_EQ(std::format("{:e}", T {-211, 6}), "-2.11e+08"); + BOOST_TEST_EQ(std::format("{:e}", T {-2111, 6}), "-2.111e+09"); - BOOST_TEST_EQ(std::format("{:E}", T {-21, 6}), "-2.100000E+07"); - BOOST_TEST_EQ(std::format("{:E}", T {-211, 6}), "-2.110000E+08"); - BOOST_TEST_EQ(std::format("{:E}", T {-2111, 6}), "-2.111000E+09"); + BOOST_TEST_EQ(std::format("{:E}", T {-21, 6}), "-2.1E+07"); + BOOST_TEST_EQ(std::format("{:E}", T {-211, 6}), "-2.11E+08"); + BOOST_TEST_EQ(std::format("{:E}", T {-2111, 6}), "-2.111E+09"); BOOST_TEST_EQ(std::format("{:.0E}", T {0}), "0E+00"); BOOST_TEST_EQ(std::format("{:e}", std::numeric_limits::infinity()), "inf"); From b6c0f2696a65b861607aa6ad108f9aee352d4a72 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 11:31:10 +0200 Subject: [PATCH 277/967] Fix handling of unspecified precision --- include/boost/decimal/format.hpp | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 4dae38a9c..78c03a9f9 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -42,7 +42,7 @@ constexpr auto parse_impl(ParseContext &ctx) { auto sign_character = format_sign_option::minus; auto it {ctx.begin()}; - int ctx_precision = 6; + int ctx_precision = -1; boost::decimal::chars_format fmt = boost::decimal::chars_format::general; bool is_upper = false; int padding_digits = 0; @@ -207,7 +207,15 @@ struct formatter // LCOV_EXCL_STOP } - const auto r = to_chars(buffer_front, buffer.data() + buffer.size(), v, fmt, ctx_precision); + boost::decimal::to_chars_result r {}; + if (ctx_precision != -1) + { + r = to_chars(buffer_front, buffer.data() + buffer.size(), v, fmt, ctx_precision); + } + else + { + r = to_chars(buffer_front, buffer.data() + buffer.size(), v, fmt); + } std::string s(buffer.data(), static_cast(r.ptr - buffer.data())); From be7f8b6e3cfc4237c8ff721ee8060dbdcb498f7c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 09:10:51 +0200 Subject: [PATCH 278/967] Ensure user does not provide multiple definitions --- include/boost/decimal/cfenv.hpp | 40 +++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/include/boost/decimal/cfenv.hpp b/include/boost/decimal/cfenv.hpp index 6acba7ad4..cdb15ae81 100644 --- a/include/boost/decimal/cfenv.hpp +++ b/include/boost/decimal/cfenv.hpp @@ -7,6 +7,46 @@ #include +#ifdef BOOST_DECIMAL_FE_DEC_DOWNWARD +# define BOOST_DECIMAL_MODE_1 1 +#else +# define BOOST_DECIMAL_MODE_1 0 +#endif + +#ifdef BOOST_DECIMAL_FE_DEC_TO_NEAREST +# define BOOST_DECIMAL_MODE_2 1 +#else +# define BOOST_DECIMAL_MODE_2 0 +#endif + +#ifdef BOOST_DECIMAL_FE_DEC_TO_NEAREST_FROM_ZERO +# define BOOST_DECIMAL_MODE_3 1 +#else +# define BOOST_DECIMAL_MODE_3 0 +#endif + +#ifdef BOOST_DECIMAL_FE_DEC_TOWARD_ZERO +# define BOOST_DECIMAL_MODE_4 1 +#else +# define BOOST_DECIMAL_MODE_4 0 +#endif + +#ifdef BOOST_DECIMAL_FE_DEC_UPWARD +# define BOOST_DECIMAL_MODE_5 1 +#else +# define BOOST_DECIMAL_MODE_5 0 +#endif + +// Now we can safely use arithmetic in preprocessor +#define BOOST_DECIMAL_MODE_COUNT \ +(BOOST_DECIMAL_MODE_1 + BOOST_DECIMAL_MODE_2 + \ +BOOST_DECIMAL_MODE_3 + BOOST_DECIMAL_MODE_4 + \ +BOOST_DECIMAL_MODE_5) + +#if BOOST_DECIMAL_MODE_COUNT > 1 +# error "Only one rounding mode macro can be defined" +#endif + #ifndef BOOST_DECIMAL_BUILD_MODULE #include #endif From 2c19266d47f69fe4986053984c7bc346e82309a9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 09:11:05 +0200 Subject: [PATCH 279/967] Remove rounding mode for general examples --- doc/modules/ROOT/pages/examples.adoc | 19 ------------------- 1 file changed, 19 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index a09b7ec65..fde8055a2 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -101,25 +101,6 @@ Output: Returned Value: 0.25 ---- -[#examples_rounding_mode] -== Rounding Mode -[source, c++] ----- -#include -#include - -int main() -{ - auto default_rounding_mode = boost::decimal::fegetround(); // Default is fe_dec_to_nearest_from_zero - - auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_to_nearest); - - assert(default_rounding_mode != new_rounding_mode); - - return 0; -} ----- - [#examples_generic_programming] == Generic Programming [source, c++] From a96988a6314ca0377c3a10e9aabca1f780c8aa48 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 09:24:52 +0200 Subject: [PATCH 280/967] Revamp rounding mode docs --- doc/modules/ROOT/pages/cfenv.adoc | 100 ++++++++++++++++++++++-------- 1 file changed, 74 insertions(+), 26 deletions(-) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index bb3bba9fd..2331741cd 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -8,6 +8,9 @@ https://www.boost.org/LICENSE_1_0.txt = `` support :idprefix: cfenv_ +WARNING: This is an expert feature. +If you have never used std::fegetround nor std::fesetround before, it is unlikely you will need anything described on this page + == IEEE 754 defines 5 rounding modes for Decimal Floating Point Types. @@ -31,11 +34,11 @@ namespace decimal { enum class rounding_mode : unsigned { - fe_dec_downward = 1 << 0, - fe_dec_to_nearest = 1 << 1, - fe_dec_to_nearest_from_zero = 1 << 2, - fe_dec_toward_zero = 1 << 3, - fe_dec_upward = 1 << 4, + fe_dec_downward, + fe_dec_to_nearest, + fe_dec_to_nearest_from_zero, + fe_dec_toward_zero, + fe_dec_upward, fe_dec_default = fe_dec_to_nearest }; @@ -52,35 +55,80 @@ rounding_mode fesetround(rounding_mode round) noexcept; } //namespace boost ---- -You can similarly change the default rounding mode at compile time with any compiler (unlike at runtime) using similarly named macros: +Below is an example of the effects of changing the runtime rounding mode if your compiler supports it: [source, c++] ---- +#include +#include -namespace boost { -namespace decimal { +int main() +{ + using namespace boost::decimal::literals; -static constexpr rounding_mode _boost_decimal_global_rounding_mode { - #if defined(BOOST_DECIMAL_FE_DEC_DOWNWARD) - rounding_mode::fe_dec_downward - #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST) - rounding_mode::fe_dec_to_nearest - #elif defined(BOOST_DECIMAL_FE_DEC_TO_NEAREST_FROM_ZERO) - rounding_mode::fe_dec_to_nearest_from_zero - #elif defined (BOOST_DECIMAL_FE_DEC_TOWARD_ZERO) - rounding_mde::fe_dec_toward_zero - #elif defined(BOOST_DECIMAL_FE_DEC_UPWARD) - rounding_mode::fe_dec_upward - #else - rounding_mode::fe_dec_default - #endif -}; + auto default_rounding_mode = boost::decimal::fegetround(); // Default is fe_dec_to_nearest + + auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_upward); + + assert(default_rounding_mode != new_rounding_mode); + + const auto lhs {"5e+50"_DF}; + const auto rhs {"4e+40"_DF}; + + // With upward rounding the result will be "5.000001e+50"_DF + // Even though the difference in order of magnitude is greater than the precision of the type, + // any addition in this mode will result in at least a one ULP difference + const auto upward_res {lhs + rhs}; + assert(upward_res == "5.000001e+50"_DF); + + boost::decimal::fesetround(boost::decimal::rounding_mode::fe_downward); + + // Similar to above in the downward rounding mode any subtraction will result in at least a one ULP difference + const auto downward_res {lhs - rhs}; + assert(downward_res == "4.999999e+50"_DF); + + return 0; +} +---- + +As shown, changing the rounding mode *WILL* change your numerical results. +Before attempting to change the rounding mode ensure this is actually what you want to happen. + +You can similarly change the default rounding mode at compile time with *ANY* compiler (unlike at runtime) using similarly named macros: + +1. BOOST_DECIMAL_FE_DEC_DOWNWARD +2. BOOST_DECIMAL_FE_DEC_TO_NEAREST +3. BOOST_DECIMAL_FE_DEC_TO_NEAREST_FROM_ZERO +4. BOOST_DECIMAL_FE_DEC_TOWARD_ZERO +5. BOOST_DECIMAL_FE_DEC_UPWARD + +If none of the above macros are defined, the default rounding mode for compile time is the same as the default runtime (i.e. as if BOOST_DECIMAL_FE_DEC_TO_NEAREST were defined). +At most *ONE* of these macros are allowed to be user defined. +A `#error` will be emitted if more than one is detected. +The macro must be defined before the inclusion of any decimal library header. + +This same example can be reduced for the cases where: -} // namespace decimal -} // namespace boost +1. Compiler does not support runtime rounding mode changes +2. You want to change the compile time rounding mode + +[source, c++] ---- +#define BOOST_DECIMAL_FE_DEC_DOWNWARD +#include + +int main() +{ + using namespace boost::decimal::literals; + + constexpr auto lhs {"5e+50"_DF}; + constexpr auto rhs {"4e+40"_DF}; + constexpr auto downward_res {lhs - rhs}; + static_assert(downward_res == "4.999999e+50"_DF); -The default rounding mode for compile time is the same as the default runtime. + return 0; +} +---- IMPORTANT: Prior to v5.2.0 this header was ``, but has been changed to `` for consistency with the STL naming convention. From df9f88c3e4e96a753341e5ee593c41ab106d8e26 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 09:27:37 +0200 Subject: [PATCH 281/967] Update example to match docs --- doc/modules/ROOT/pages/cfenv.adoc | 4 ++-- examples/rounding_mode.cpp | 23 ++++++++++++++++++++++- 2 files changed, 24 insertions(+), 3 deletions(-) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 2331741cd..4515391c5 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -68,7 +68,7 @@ int main() auto default_rounding_mode = boost::decimal::fegetround(); // Default is fe_dec_to_nearest - auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_upward); + auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_upward); assert(default_rounding_mode != new_rounding_mode); @@ -81,7 +81,7 @@ int main() const auto upward_res {lhs + rhs}; assert(upward_res == "5.000001e+50"_DF); - boost::decimal::fesetround(boost::decimal::rounding_mode::fe_downward); + boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_downward); // Similar to above in the downward rounding mode any subtraction will result in at least a one ULP difference const auto downward_res {lhs - rhs}; diff --git a/examples/rounding_mode.cpp b/examples/rounding_mode.cpp index 67445d1d1..3f6feae4f 100644 --- a/examples/rounding_mode.cpp +++ b/examples/rounding_mode.cpp @@ -7,12 +7,33 @@ int main() { + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + using namespace boost::decimal::literals; + BOOST_DECIMAL_ATTRIBUTE_UNUSED auto default_rounding_mode = boost::decimal::fegetround(); // Default is fe_dec_to_nearest - BOOST_DECIMAL_ATTRIBUTE_UNUSED auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_to_nearest_from_zero); + BOOST_DECIMAL_ATTRIBUTE_UNUSED auto new_rounding_mode = boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_upward); assert(default_rounding_mode != new_rounding_mode); + const auto lhs {"5e+50"_DF}; + const auto rhs {"4e+40"_DF}; + + // With upward rounding the result will be "5.000001e+50"_DF + // Even though the difference in order of magnitude is greater than the precision of the type, + // any addition in this mode will result in at least a one ULP difference + BOOST_DECIMAL_ATTRIBUTE_UNUSED const auto upward_res {lhs + rhs}; + assert(upward_res == "5.000001e+50"_DF); + + boost::decimal::fesetround(boost::decimal::rounding_mode::fe_dec_downward); + + // Similar to above in the downward rounding mode any subtraction will result in at least a one ULP difference + BOOST_DECIMAL_ATTRIBUTE_UNUSED const auto downward_res {lhs - rhs}; + assert(downward_res == "4.999999e+50"_DF); + + #endif // BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + return 0; } From 7ae98387e57cb4a5c3bfe20d1ee7b985faa56e91 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 09:40:03 +0200 Subject: [PATCH 282/967] Add the compile time example to test suite --- examples/rounding_mode_compile_time.cpp | 18 ++++++++++++++++++ test/Jamfile | 1 + 2 files changed, 19 insertions(+) create mode 100644 examples/rounding_mode_compile_time.cpp diff --git a/examples/rounding_mode_compile_time.cpp b/examples/rounding_mode_compile_time.cpp new file mode 100644 index 000000000..18ce6b96c --- /dev/null +++ b/examples/rounding_mode_compile_time.cpp @@ -0,0 +1,18 @@ +// Copyright 2024 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#define BOOST_DECIMAL_FE_DEC_DOWNWARD +#include + +int main() +{ + using namespace boost::decimal::literals; + + constexpr auto lhs {"5e+50"_DF}; + constexpr auto rhs {"4e+40"_DF}; + constexpr auto downward_res {lhs - rhs}; + static_assert(downward_res == "4.999999e+50"_DF, "Incorrectly rounded result"); + + return 0; +} diff --git a/test/Jamfile b/test/Jamfile index e7a56586c..d24156025 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -181,6 +181,7 @@ run ../examples/bit_conversions.cpp ; run ../examples/charconv.cpp ; run ../examples/literals.cpp ; run ../examples/rounding_mode.cpp ; +run ../examples/rounding_mode_compile_time.cpp ; run ../examples/moving_average.cpp ; run ../examples/currency_conversion.cpp ; run ../examples/statistics.cpp ; From 26549b406ca478660d47a10c5026dd4b693d20ce Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 09:40:15 +0200 Subject: [PATCH 283/967] Add thread safety warning --- doc/modules/ROOT/pages/cfenv.adoc | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 4515391c5..84a1c5f6c 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -9,7 +9,7 @@ https://www.boost.org/LICENSE_1_0.txt :idprefix: cfenv_ WARNING: This is an expert feature. -If you have never used std::fegetround nor std::fesetround before, it is unlikely you will need anything described on this page +If you have never used `std::fegetround` nor `std::fesetround` before, it is unlikely you will need anything described on this page == @@ -55,6 +55,8 @@ rounding_mode fesetround(rounding_mode round) noexcept; } //namespace boost ---- +IMPORTANT: Much like `std::fesetround`, `boost::decimal::fesetround` is not thread safe. + Below is an example of the effects of changing the runtime rounding mode if your compiler supports it: [source, c++] @@ -125,7 +127,7 @@ int main() constexpr auto lhs {"5e+50"_DF}; constexpr auto rhs {"4e+40"_DF}; constexpr auto downward_res {lhs - rhs}; - static_assert(downward_res == "4.999999e+50"_DF); + static_assert(downward_res == "4.999999e+50"_DF, "Incorrectly rounded result"); return 0; } From d7ae4a7949bc73a17d6144c419279164f92c8319 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 11:13:42 +0200 Subject: [PATCH 284/967] Disable consteval for clang < 12 --- include/boost/decimal/detail/config.hpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/boost/decimal/detail/config.hpp b/include/boost/decimal/detail/config.hpp index 848ccca92..72be6f1b7 100644 --- a/include/boost/decimal/detail/config.hpp +++ b/include/boost/decimal/detail/config.hpp @@ -230,6 +230,18 @@ typedef unsigned __int128 builtin_uint128_t; # endif #endif +// Clang < 12 will detect availability, but has issues +#ifdef BOOST_DECIMAL_HAS_BUILTIN_IS_CONSTANT_EVALUATED +# if defined(__clang__) && __clang_major__ < 12 +# ifdef BOOST_DECIMAL_HAS_BUILTIN_IS_CONSTANT_EVALUATED +# undef BOOST_DECIMAL_HAS_BUILTIN_IS_CONSTANT_EVALUATED +# endif +# ifdef BOOST_DECIMAL_HAS_IS_CONSTANT_EVALUATED +# undef BOOST_DECIMAL_HAS_IS_CONSTANT_EVALUATED +# endif +# endif +#endif + // // MSVC also supports __builtin_is_constant_evaluated if it's recent enough: // From 2bfaa972f2844c1eb96987851d8ae61c4f9265e2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 08:07:25 +0200 Subject: [PATCH 285/967] Add reproducer test set --- test/Jamfile | 1 + test/github_issue_1094.cpp | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) create mode 100644 test/github_issue_1094.cpp diff --git a/test/Jamfile b/test/Jamfile index d24156025..dc1b781dc 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -68,6 +68,7 @@ run github_issue_1055.cpp ; run github_issue_1057.cpp ; compile-fail github_issue_1087.cpp ; run github_issue_1091.cpp ; +run github_issue_1094.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; run random_decimal32_comp.cpp ; diff --git a/test/github_issue_1094.cpp b/test/github_issue_1094.cpp new file mode 100644 index 000000000..33e7eaf91 --- /dev/null +++ b/test/github_issue_1094.cpp @@ -0,0 +1,34 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1094 + +#include +#include + +using namespace boost::decimal; + +int main() +{ + BOOST_TEST(boost::decimal::fegetround() == _boost_decimal_global_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == _boost_decimal_global_runtime_rounding_mode); + + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + BOOST_TEST(fesetround(rounding_mode::fe_dec_upward) == rounding_mode::fe_dec_upward); + BOOST_TEST(boost::decimal::fegetround() != _boost_decimal_global_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == _boost_decimal_global_runtime_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == rounding_mode::fe_dec_upward); + + #else + + BOOST_TEST(fesetround(rounding_mode::fe_dec_upward) == _boost_decimal_global_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == _boost_decimal_global_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == _boost_decimal_global_runtime_rounding_mode); + BOOST_TEST(boost::decimal::fegetround() == rounding_mode::fe_dec_default); + + #endif + + return boost::report_errors(); +} From dfeb8b736907889e07f3550b85011c9af22f1ffe Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 8 Oct 2025 10:56:26 +0200 Subject: [PATCH 286/967] Fix value returned by fesetround --- include/boost/decimal/cfenv.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/cfenv.hpp b/include/boost/decimal/cfenv.hpp index cdb15ae81..a995ef33a 100644 --- a/include/boost/decimal/cfenv.hpp +++ b/include/boost/decimal/cfenv.hpp @@ -97,7 +97,7 @@ BOOST_DECIMAL_EXPORT inline auto fesetround(BOOST_DECIMAL_ATTRIBUTE_UNUSED const _boost_decimal_global_runtime_rounding_mode = round; #endif - return round; + return _boost_decimal_global_runtime_rounding_mode; } } // namespace decimal From 7779e37707db1e6c0919ed8a24f89be9a0a56ba8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 08:34:58 +0200 Subject: [PATCH 287/967] Add rounding mode thread safety comment --- doc/modules/ROOT/pages/cfenv.adoc | 1 + 1 file changed, 1 insertion(+) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 84a1c5f6c..72af35e49 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -108,6 +108,7 @@ If none of the above macros are defined, the default rounding mode for compile t At most *ONE* of these macros are allowed to be user defined. A `#error` will be emitted if more than one is detected. The macro must be defined before the inclusion of any decimal library header. +The rounding mode set at compile time is thread-safe as it is read only. This same example can be reduced for the cases where: From 65b7c3b44083d463dedcc98cfb8a5376f82d1e3c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 08:41:36 +0200 Subject: [PATCH 288/967] Add banker's rounding note --- doc/modules/ROOT/pages/cfenv.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 72af35e49..bf72fbff6 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -21,7 +21,7 @@ IEEE 754 defines 5 rounding modes for Decimal Floating Point Types. 4. Toward zero 5. Upward -NOTE: The default rounding mode is to nearest with ties to even (#2) as specified in IEEE 754 Section 4.3.3 +NOTE: The default rounding mode is to nearest with ties to even (#2) as specified in IEEE 754 Section 4.3.3. This is also colloquially known as "Banker's Rounding" Using the following `enum class` and functions you can change the rounding mode from the default at *RUNTIME* only if xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_NO_CONSTEVAL_DETECTION`] is not defined. From f9560be73f0894621f5cd4a7c251018b20a23000 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 09:03:03 +0200 Subject: [PATCH 289/967] Add comment about C style libs --- doc/modules/ROOT/pages/cfenv.adoc | 1 + 1 file changed, 1 insertion(+) diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index bf72fbff6..51ce044dd 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -94,6 +94,7 @@ int main() ---- As shown, changing the rounding mode *WILL* change your numerical results. +If you are coming from the Intel library (or other C-style libs) where every mathematical function takes a rounding mode, that is not the case in this library; the only way to change the rounding mode for individual operations is via the global rounding mode. Before attempting to change the rounding mode ensure this is actually what you want to happen. You can similarly change the default rounding mode at compile time with *ANY* compiler (unlike at runtime) using similarly named macros: From 0621b146660ce8833e4b4ffd2bebac96eee3fb1e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 16:09:49 +0200 Subject: [PATCH 290/967] Consolidate and expand section on design decisions and deviations --- doc/modules/ROOT/pages/charconv.adoc | 5 -- doc/modules/ROOT/pages/cmath.adoc | 5 -- doc/modules/ROOT/pages/design.adoc | 58 ++++++++++++++++++++- doc/modules/ROOT/pages/generic_decimal.adoc | 16 +----- 4 files changed, 57 insertions(+), 27 deletions(-) diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index 718d3f641..da402f2f7 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -12,11 +12,6 @@ https://www.boost.org/LICENSE_1_0.txt The following functions analogous to those from https://en.cppreference.com/w/cpp/header/charconv[] are provided: -IMPORTANT: `std::from_chars` has an open issue with LWG here: https://cplusplus.github.io/LWG/lwg-active.html#3081. -The standard for does not distinguish between underflow and overflow like strtod does. -`boost::decimal::from_chars` modifies `value` in order to communicate this to the user in a divergence from the standard. -This behavior is the same as that of https://www.boost.org/doc/libs/master/libs/charconv/doc/html/charconv.html#from_chars_usage_notes_for_from_chars_for_floating_point_types[`boost::charconv::from_chars_erange`]. - [#chars_format] == chars_format [source, c++] diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index ad73c4edf..77ddd0e2b 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -13,11 +13,6 @@ They are also all constexpr with C\\++14 unlike the built-in floating point type Additionally, all functions are marked `noexcept`. All of these functions are impacted by the global rounding mode as described in xref:cfenv.adoc[rounding modes] as well as the `DEC_FLT_EVAL_METHOD` from xref:cfloat.adoc[evaluation methods]. -IEEE 754 specifies for correct rounding: "This standard’s method of converting an infinitely precise result to a floating-point number, as determined by the applicable rounding direction. A floating-point number so obtained is said to be correctly rounded." -None of these functions meet the definition of correctly rounded (which would imply precision of https://en.wikipedia.org/wiki/Unit_in_the_last_place[0.5 ULP]). -From the https://www.netlib.org/misc/intel/README.txt[Intel libdfp README]: "binary floating-point mathematical functions -implemented for example in C or other compiler math libraries are in general -not correctly rounded either". == Basic Operations diff --git a/doc/modules/ROOT/pages/design.adoc b/doc/modules/ROOT/pages/design.adoc index e9a23ebb3..e231b0d86 100644 --- a/doc/modules/ROOT/pages/design.adoc +++ b/doc/modules/ROOT/pages/design.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#design] -= Design Decisions += Design Decisions and Standards Deviations :idprefix: design_ == C++14 Requirement @@ -20,7 +20,61 @@ This allows Boost.Decimal to better emulate the functionality a built-in type wo Boost.Math requires C++14 as the minimum language standard for the library. By meeting this requirement, and Boost.Math's conceptual requirements for a user-defined type we are able to provide the statistics, interpolation, quadrature, etc. out of the box. -=== No Binary Floating Point Operations +== No Binary Floating Point Operations The library deliberately does not contain any operations between a binary floating point type and the decimal floating point types. The rationale is similar to that of the library in the first place in that you may end up with surprising results. Conversion operators and constructors are available for all decimal types should the user want to explicit cast one side of the operation to conduct the operation. + +== IEEE Deviations + +=== `` Functions Do Not Meet the Definition of Correctly Rounded + +IEEE 754 specifies for correct rounding: "This standard’s method of converting an infinitely precise result to a floating-point number, as determined by the applicable rounding direction. A floating-point number so obtained is said to be correctly rounded." +None of these functions meet the definition of correctly rounded (which would imply precision of https://en.wikipedia.org/wiki/Unit_in_the_last_place[0.5 ULP]). +From the https://www.netlib.org/misc/intel/README.txt[Intel libdfp README]: "binary floating-point mathematical functions +implemented for example in C or other compiler math libraries are in general +not correctly rounded either". + +=== Floating Point Exception Flags are not Supported + +The normal method in pass:[C++] to set and get the current floating point exception flags is via http://en.cppreference.com/w/cpp/numeric/fenv/feexceptflag.html[`std::fegetexceptflag` and `std::fesetexceptflag`]. +The decision then becomes do we support `constexpr` or floating point exceptions? +We find that the former is far more useful than the latter. +The alternative to would be to use C style functions such as: + +[source, C++] +---- +decimal64_t dec64_add(decimal64_t a, decimal64_t b, rounding_mode round, int* floating_point_flags); +---- + +This style of function is used in Intel libdfp because it is a C library. +We find this to be unidiomatic and unergonomic for a modern pass:[C++] library. + +== C++ Standards Deviations + +=== `from_chars` Distinguishes Overflow from Underflow + +`std::from_chars` has an open issue with LWG here: https://cplusplus.github.io/LWG/lwg-active.html#3081. +The standard for does not distinguish between underflow and overflow like strtod does. +`boost::decimal::from_chars` modifies `value` in order to communicate this to the user in a divergence from the standard. +This behavior is the same as that of https://www.boost.org/doc/libs/master/libs/charconv/doc/html/charconv.html#from_chars_usage_notes_for_from_chars_for_floating_point_types[`boost::charconv::from_chars_erange`]. + +[#non-finite-deviation] +=== `istream` of Non-finite Values is Allowed + +Unlike built-in binary floating point types the library allows input of non-finite values such as the below: + +[source, c++] +---- +std::istringstream is("INF"); +decimal32_t x; +is >> x; +const auto endpos {is.tellg()}; + +assert(isinf(x)); +assert(endpos == 3); +---- + +The result of `tellg()` will only parse until a complete non-finite value is found and then terminate. +For example `nanfinity` will construct a `NAN` and set `endpos = 3`, or `nan(snan)JUNK` will construct `SNAN` and set `endpos = 9` since `nan(snan)` contains a valid payload. +This is designed to match the value of `r.ptr` in xref:charconv.adoc[``]. diff --git a/doc/modules/ROOT/pages/generic_decimal.adoc b/doc/modules/ROOT/pages/generic_decimal.adoc index 04dd51237..b1f950121 100644 --- a/doc/modules/ROOT/pages/generic_decimal.adoc +++ b/doc/modules/ROOT/pages/generic_decimal.adoc @@ -162,19 +162,5 @@ In the event of binary arithmetic between a non-decimal type and a decimal type In the event of binary arithmetic between two decimal types the result will be the higher precision type of the two (e.g. decimal64_t + decimal32_t -> decimal64_t) == 3.2.10 Note -Unlike built-in binary floating point types the library allows input of non-finite values such as the below: -[source, c++] ----- -std::istringstream is("INF"); -decimal32_t x; -is >> x; -const auto endpos {is.tellg()}; - -assert(isinf(x)); -assert(endpos == 3); ----- - -The result of `tellg()` will only parse until a complete non-finite value is found and then terminate. -For example `nanfinity` will construct a `NAN` and set `endpos = 3`, or `nan(snan)JUNK` will construct `SNAN` and set `endpos = 9` since `nan(snan)` contains a valid payload. -This is designed to match the value of `r.ptr` in xref:charconv.adoc[``]. +xref:design.adoc#non-finite-deviation[Non-finite values are supported] From 1b1ebdea351e6d902e8bec7f3ea089475751b5c2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 9 Oct 2025 16:15:24 +0200 Subject: [PATCH 291/967] Add in note on facets --- doc/modules/ROOT/pages/design.adoc | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/doc/modules/ROOT/pages/design.adoc b/doc/modules/ROOT/pages/design.adoc index e231b0d86..89c7b54cf 100644 --- a/doc/modules/ROOT/pages/design.adoc +++ b/doc/modules/ROOT/pages/design.adoc @@ -78,3 +78,7 @@ assert(endpos == 3); The result of `tellg()` will only parse until a complete non-finite value is found and then terminate. For example `nanfinity` will construct a `NAN` and set `endpos = 3`, or `nan(snan)JUNK` will construct `SNAN` and set `endpos = 9` since `nan(snan)` contains a valid payload. This is designed to match the value of `r.ptr` in xref:charconv.adoc[``]. + +=== Locale Facets are Unsupported + +Facets as discussed in https://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2849.pdf[N2849] section 3.10 are unimplemented. From 8295817fa371f95cd4114b65dd079564a8c232da Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 09:20:01 +0200 Subject: [PATCH 292/967] Add statement differentiating clause 5 and 9 --- doc/modules/ROOT/pages/design.adoc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/modules/ROOT/pages/design.adoc b/doc/modules/ROOT/pages/design.adoc index 89c7b54cf..ed2b6fc83 100644 --- a/doc/modules/ROOT/pages/design.adoc +++ b/doc/modules/ROOT/pages/design.adoc @@ -34,6 +34,8 @@ None of these functions meet the definition of correctly rounded (which would im From the https://www.netlib.org/misc/intel/README.txt[Intel libdfp README]: "binary floating-point mathematical functions implemented for example in C or other compiler math libraries are in general not correctly rounded either". +Technically IEEE 754 differentiates the specification for mandatory operations (e.g. `fma`, `sqrt`, etc.) in Clause 5, and recommended operations (e.g. `exp`, `log`, etc.) in Clause 9, but our statement about half ULP precision applies to all non-boolean result `` functions. +This does not apply to Clause 5 functions like `isnan` which has a boolean result because ULP precision does not apply. === Floating Point Exception Flags are not Supported From 98082efd4eee52ff165f077ea17c16e083804a6c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 09:56:31 +0200 Subject: [PATCH 293/967] Only applies to platforms with consteval --- test/github_issue_1026.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/test/github_issue_1026.cpp b/test/github_issue_1026.cpp index e82d2c00c..5a75afc42 100644 --- a/test/github_issue_1026.cpp +++ b/test/github_issue_1026.cpp @@ -66,10 +66,14 @@ int main() BOOST_TEST_EQ("1"_DF / "5.24289e-96"_DF, "1.907345e+95"_DF); + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + const auto new_rounding_mode = fesetround(rounding_mode::fe_dec_to_nearest_from_zero); BOOST_TEST(new_rounding_mode == rounding_mode::fe_dec_to_nearest_from_zero); BOOST_TEST_EQ(decimal32_t(100000, -105), "1e-100"_df); + #endif // BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + return boost::report_errors(); } From 30439fe966f06a44b7403cff60bf28472b60f316 Mon Sep 17 00:00:00 2001 From: asensi <13171207+asensi@users.noreply.github.com> Date: Fri, 10 Oct 2025 22:32:09 +0200 Subject: [PATCH 294/967] Fix the name of a variable in 'basics.adoc' --- doc/modules/ROOT/pages/basics.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/basics.adoc b/doc/modules/ROOT/pages/basics.adoc index 4064805fa..a800fc8ec 100644 --- a/doc/modules/ROOT/pages/basics.adoc +++ b/doc/modules/ROOT/pages/basics.adoc @@ -39,7 +39,7 @@ Overflow and underflow are handled the same way that they are with binary floati [source, c++] ---- -boost::decimal::decimal64_t oveflow_value {100, 10000}; // Constructs +infinity +boost::decimal::decimal64_t overflow_value {100, 10000}; // Constructs +infinity boost::decimal::decimal64_t underflow_value {100, -10000}; // Constructs 0 ---- From 0776859d44d274c1b122f7080e9b64ce1f9b406b Mon Sep 17 00:00:00 2001 From: sdarwin Date: Fri, 10 Oct 2025 14:58:37 -0600 Subject: [PATCH 295/967] Drone: llvm apt installation --- .drone.jsonnet | 8 +++++++- .drone/drone.bat | 2 -- .drone/drone.sh | 2 -- 3 files changed, 7 insertions(+), 5 deletions(-) diff --git a/.drone.jsonnet b/.drone.jsonnet index ed8d750bd..84e7659a1 100644 --- a/.drone.jsonnet +++ b/.drone.jsonnet @@ -37,7 +37,9 @@ local linux_pipeline(name, image, environment, packages = "", sources = [], arch commands: [ 'set -e', - 'wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -', + 'echo $DRONE_STAGE_MACHINE', + 'uname -a', + 'curl -sSL --retry 5 https://apt.llvm.org/llvm-snapshot.gpg.key | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/llvm-snapshot.gpg', ] + (if sources != [] then [ ('apt-add-repository "' + source + '"') for source in sources ] else []) + (if packages != "" then [ 'apt-get update', 'apt-get -y install ' + packages ] else []) + @@ -68,6 +70,9 @@ local macos_pipeline(name, environment, xcode_version = "12.2", osx_version = "c environment: environment + { "DEVELOPER_DIR": "/Applications/Xcode-" + xcode_version + ".app/Contents/Developer" }, commands: [ + 'echo $DRONE_STAGE_MACHINE', + 'sw_vers', + 'uname -a', 'export LIBRARY=' + library, './.drone/drone.sh', ] @@ -94,6 +99,7 @@ local windows_pipeline(name, image, environment, arch = "amd64") = environment: environment, commands: [ + 'echo $env:DRONE_STAGE_MACHINE', 'cmd /C .drone\\\\drone.bat ' + library, ] } diff --git a/.drone/drone.bat b/.drone/drone.bat index 2b56e63c6..c0e336562 100644 --- a/.drone/drone.bat +++ b/.drone/drone.bat @@ -7,8 +7,6 @@ set LIBRARY=%1 set DRONE_BUILD_DIR=%CD% -echo $env:DRONE_STAGE_MACHINE - set BOOST_BRANCH=develop if "%DRONE_BRANCH%" == "master" set BOOST_BRANCH=master cd .. diff --git a/.drone/drone.sh b/.drone/drone.sh index 5a5469599..86ea680fa 100755 --- a/.drone/drone.sh +++ b/.drone/drone.sh @@ -6,8 +6,6 @@ set -ex export PATH=~/.local/bin:/usr/local/bin:$PATH -uname -a -echo $DRONE_STAGE_MACHINE DRONE_BUILD_DIR=$(pwd) From 5940912b807a38cea5f8d18e8759140306eacc0d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andrzej=20Krzemie=C5=84ski?= Date: Sat, 11 Oct 2025 19:48:00 +0200 Subject: [PATCH 296/967] Fix typos in charconv docs --- doc/modules/ROOT/pages/charconv.adoc | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index da402f2f7..6201a9123 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -41,9 +41,9 @@ namespace decimal { struct from_chars_result { const char* ptr; - std::errc ptr; + std::errc ec; - friend constexpr auto operator==(const from_chars_result& lhs, const from_chars_result& rhs) noexcept = default; + friend constexpr bool operator==(const from_chars_result& lhs, const from_chars_result& rhs) noexcept = default; constexpr explicit operator bool() const noexcept { return ec == std::errc{}; } } @@ -62,9 +62,9 @@ namespace decimal { struct to_chars_result { char* ptr; - std::errc ptr; + std::errc ec; - friend constexpr auto operator==(const to_chars_result& lhs, const to_chars_result& rhs) noexcept = default; + friend constexpr bool operator==(const to_chars_result& lhs, const to_chars_result& rhs) noexcept = default; constexpr explicit operator bool() const noexcept { return ec == std::errc{}; } } From 45b657b18235bc6b0b1236e992107afd140024f5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andrzej=20Krzemie=C5=84ski?= Date: Sat, 11 Oct 2025 20:26:22 +0200 Subject: [PATCH 297/967] Docs: fix example with literals --- doc/modules/ROOT/pages/examples.adoc | 1 + 1 file changed, 1 insertion(+) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index fde8055a2..6d9b449d9 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -160,6 +160,7 @@ bool float_equal(T lhs, T rhs) int main() { using namespace boost::decimal; + using namespace boost::decimal::literals; const auto pi_32 {"3.141592653589793238"_DF}; const auto pi_64 {"3.141592653589793238"_DD}; From 5d1bd64cb8aafb5a7ae927a50a20b0255b5ae1b0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 11:48:47 +0200 Subject: [PATCH 298/967] Add expanded reproducer --- test/test_literals.cpp | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/test/test_literals.cpp b/test/test_literals.cpp index 902cfdad5..1ad2a836b 100644 --- a/test/test_literals.cpp +++ b/test/test_literals.cpp @@ -132,6 +132,18 @@ void construct_negative_infinity() BOOST_TEST_EQ("-inf"_DLF, -"inf"_DLF); } +void test_issue_1119() +{ + using namespace boost::decimal::literals; + + const auto val = 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000_DD; + BOOST_TEST_EQ(val, decimal64_t(1, 198)); + + const auto overflow_val = 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000_df; + BOOST_TEST(isinf(overflow_val)); + BOOST_TEST(!signbit(overflow_val)); +} + int main() { test_decimal32_t_literals(); @@ -144,5 +156,7 @@ int main() construct_negative_infinity(); + test_issue_1119(); + return boost::report_errors(); } From d99761b5b05bd84dce22eccf411663140c548c6d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 11:50:13 +0200 Subject: [PATCH 299/967] Remove unsigned long long overloads --- include/boost/decimal/literals.hpp | 60 ------------------------------ 1 file changed, 60 deletions(-) diff --git a/include/boost/decimal/literals.hpp b/include/boost/decimal/literals.hpp index e0709f76b..e6d84d350 100644 --- a/include/boost/decimal/literals.hpp +++ b/include/boost/decimal/literals.hpp @@ -55,16 +55,6 @@ BOOST_DECIMAL_EXPORT constexpr auto operator ""_df(const char *str, const std::s return d; } -BOOST_DECIMAL_EXPORT constexpr auto operator ""_DF(const unsigned long long v) -> decimal32_t -{ - return decimal32_t {v}; -} - -BOOST_DECIMAL_EXPORT constexpr auto operator ""_df(const unsigned long long v) -> decimal32_t -{ - return decimal32_t {v}; -} - BOOST_DECIMAL_EXPORT constexpr auto operator ""_DFF(const char *str) -> decimal_fast32_t { decimal_fast32_t d; @@ -93,16 +83,6 @@ BOOST_DECIMAL_EXPORT constexpr auto operator ""_dff(const char *str, const std:: return d; } -BOOST_DECIMAL_EXPORT constexpr auto operator ""_DFF(const unsigned long long v) -> decimal_fast32_t -{ - return decimal_fast32_t {v}; -} - -BOOST_DECIMAL_EXPORT constexpr auto operator ""_dff(const unsigned long long v) -> decimal_fast32_t -{ - return decimal_fast32_t {v}; -} - BOOST_DECIMAL_EXPORT constexpr auto operator ""_DD(const char *str) -> decimal64_t { decimal64_t d; @@ -131,16 +111,6 @@ BOOST_DECIMAL_EXPORT constexpr auto operator ""_dd(const char *str, std::size_t) return d; } -BOOST_DECIMAL_EXPORT constexpr auto operator ""_DD(const unsigned long long v) -> decimal64_t -{ - return decimal64_t {v}; -} - -BOOST_DECIMAL_EXPORT constexpr auto operator ""_dd(const unsigned long long v) -> decimal64_t -{ - return decimal64_t {v}; -} - BOOST_DECIMAL_EXPORT constexpr auto operator ""_DDF(const char *str) -> decimal_fast64_t { decimal_fast64_t d; @@ -169,16 +139,6 @@ BOOST_DECIMAL_EXPORT constexpr auto operator ""_ddf(const char *str, const std:: return d; } -BOOST_DECIMAL_EXPORT constexpr auto operator ""_DDF(const unsigned long long v) -> decimal_fast64_t -{ - return decimal_fast64_t {v}; -} - -BOOST_DECIMAL_EXPORT constexpr auto operator ""_ddf(const unsigned long long v) -> decimal_fast64_t -{ - return decimal_fast64_t {v}; -} - BOOST_DECIMAL_EXPORT constexpr auto operator ""_DL(const char *str) -> decimal128_t { decimal128_t d; @@ -207,16 +167,6 @@ BOOST_DECIMAL_EXPORT constexpr auto operator ""_dl(const char *str, std::size_t) return d; } -BOOST_DECIMAL_EXPORT constexpr auto operator ""_DL(const unsigned long long v) -> decimal128_t -{ - return decimal128_t {v}; -} - -BOOST_DECIMAL_EXPORT constexpr auto operator ""_dl(const unsigned long long v) -> decimal128_t -{ - return decimal128_t {v}; -} - BOOST_DECIMAL_EXPORT constexpr auto operator ""_DLF(const char *str) -> decimal_fast128_t { decimal_fast128_t d; @@ -245,16 +195,6 @@ BOOST_DECIMAL_EXPORT constexpr auto operator ""_dlf(const char *str, const std:: return d; } -BOOST_DECIMAL_EXPORT constexpr auto operator ""_DLF(const unsigned long long v) -> decimal_fast128_t -{ - return decimal_fast128_t {v}; -} - -BOOST_DECIMAL_EXPORT constexpr auto operator ""_dlf(const unsigned long long v) -> decimal_fast128_t -{ - return decimal_fast128_t {v}; -} - } // namespace literals } // namespace decimal } // namespace boost From cf5ffa5cff955d404808e736f94cb9ef07f76ae2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 11:52:19 +0200 Subject: [PATCH 300/967] Update overloads in doc page --- doc/modules/ROOT/pages/literals.adoc | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/doc/modules/ROOT/pages/literals.adoc b/doc/modules/ROOT/pages/literals.adoc index 85b20e272..499568359 100644 --- a/doc/modules/ROOT/pages/literals.adoc +++ b/doc/modules/ROOT/pages/literals.adoc @@ -20,40 +20,40 @@ namespace decimal { constexpr auto operator "" _DF(const char* str) -> decimal32_t constexpr auto operator "" _df(const char* str) -> decimal32_t -constexpr auto operator "" _DF(unsigned long long v) -> decimal32_t -constexpr auto operator "" _df(unsigned long long v) -> decimal32_t +constexpr auto operator "" _DF(const char* str, std::size_t len) -> decimal32_t +constexpr auto operator "" _df(const char* str, std::size_t len) -> decimal32_t constexpr auto operator "" _DD(const char* str) -> decimal64_t constexpr auto operator "" _dd(const char* str) -> decimal64_t -constexpr auto operator "" _DD(unsigned long long v) -> decimal64_t -constexpr auto operator "" _dd(unsigned long long v) -> decimal64_t +constexpr auto operator "" _DD(const char* str, std::size_t len) -> decimal64_t +constexpr auto operator "" _dd(const char* str, std::size_t len) -> decimal64_t constexpr auto operator "" _DL(const char* str) -> decimal128_t constexpr auto operator "" _dl(const char* str) -> decimal128_t -constexpr auto operator "" _DL(unsigned long long v) -> decimal128_t -constexpr auto operator "" _dl(unsigned long long v) -> decimal128_t +constexpr auto operator "" _DL(const char* str, std::size_t len) -> decimal128_t +constexpr auto operator "" _dl(const char* str, std::size_t len) -> decimal128_t // ----- Fast Type Literals ----- constexpr auto operator "" _DFF(const char* str) -> decimal_fast32_t constexpr auto operator "" _dff(const char* str) -> decimal_fast32_t -constexpr auto operator "" _DFF(unsigned long long v) -> decimal_fast32_t -constexpr auto operator "" _dff(unsigned long long v) -> decimal_fast32_t +constexpr auto operator "" _DFF(const char* str, std::size_t len) -> decimal_fast32_t +constexpr auto operator "" _dff(const char* str, std::size_t len) -> decimal_fast32_t constexpr auto operator "" _DDF(const char* str) -> decimal_fast64_t constexpr auto operator "" _ddf(const char* str) -> decimal_fast64_t -constexpr auto operator "" _DDF(unsigned long long v) -> decimal_fast64_t -constexpr auto operator "" _ddf(unsigned long long v) -> decimal_fast64_t +constexpr auto operator "" _DDF(const char* str, std::size_t len) -> decimal_fast64_t +constexpr auto operator "" _ddf(const char* str, std::size_t len) -> decimal_fast64_t constexpr auto operator "" _DLF(const char* str) -> decimal_fast128_t constexpr auto operator "" _dlf(const char* str) -> decimal_fast128_t -constexpr auto operator "" _DLF(unsigned long long v) -> decimal_fast128_t -constexpr auto operator "" _dlf(unsigned long long v) -> decimal_fast128_t +constexpr auto operator "" _DLF(const char* str, std::size_t len) -> decimal_fast128_t +constexpr auto operator "" _dlf(const char* str, std::size_t len) -> decimal_fast128_t } //namespace decimal } //namespace boost From ebf855415504d322ba85d175aaee3b8ffcc536ca Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 12:38:18 +0200 Subject: [PATCH 301/967] Add test of hashing cohorts --- test/test_hash.cpp | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/test/test_hash.cpp b/test/test_hash.cpp index 539716896..f1272b775 100644 --- a/test/test_hash.cpp +++ b/test/test_hash.cpp @@ -14,6 +14,7 @@ #include #include #include +#include template void test_hash() @@ -26,6 +27,31 @@ void test_hash() } } +// See: https://github.com/cppalliance/decimal/issues/1120 +template +void test_hash_cohorts() +{ + const std::array values { + T {3, 7}, + T {30, 6}, + T {300, 5}, + T {3000, 4}, + T {30000, 3}, + T {300000, 2}, + T {3000000, 1} + }; + + std::hash hasher; + + for (const auto val1 : values) + { + for (const auto val2 : values) + { + BOOST_TEST_EQ(hasher(val1), hasher(val2)); + } + } +} + int main() { test_hash(); @@ -35,5 +61,12 @@ int main() test_hash(); test_hash(); + test_hash_cohorts(); + test_hash_cohorts(); + test_hash_cohorts(); + test_hash_cohorts(); + test_hash_cohorts(); + test_hash_cohorts(); + return boost::report_errors(); } From b0a022fd7183ee25442445792b4695fc4fab175a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 12:38:49 +0200 Subject: [PATCH 302/967] All cohorts values of equivalence class should return same hash --- include/boost/decimal/hash.hpp | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/hash.hpp b/include/boost/decimal/hash.hpp index 718d145ed..15a8cf50f 100644 --- a/include/boost/decimal/hash.hpp +++ b/include/boost/decimal/hash.hpp @@ -12,6 +12,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -26,8 +27,10 @@ struct hash // Since the underlying type is a std::uint32_t, we will rely on its hash function from the STL auto operator()(const boost::decimal::decimal32_t& v) const noexcept -> std::size_t { + const auto normalized_v {boost::decimal::normalize(v)}; + std::uint32_t bits; - std::memcpy(&bits, &v, sizeof(std::uint32_t)); + std::memcpy(&bits, &normalized_v, sizeof(std::uint32_t)); return std::hash{}(bits); } @@ -39,8 +42,10 @@ struct hash // Since the underlying type is a std::uint64_t, we will rely on its hash function from the STL auto operator()(const boost::decimal::decimal64_t& v) const noexcept -> std::size_t { + const auto normalized_v {boost::decimal::normalize(v)}; + std::uint64_t bits; - std::memcpy(&bits, &v, sizeof(std::uint64_t)); + std::memcpy(&bits, &normalized_v, sizeof(std::uint64_t)); return std::hash{}(bits); } @@ -57,8 +62,10 @@ struct hash // Take the xor of the two words and hash that auto operator()(const boost::decimal::decimal128_t& v) const noexcept -> std::size_t { + const auto normalized_v {boost::decimal::normalize(v)}; + boost::int128::uint128_t bits; - std::memcpy(&bits, &v, sizeof(boost::int128::uint128_t)); + std::memcpy(&bits, &normalized_v, sizeof(boost::int128::uint128_t)); return std::hash{}(bits.high ^ bits.low); } From 721b9032d401d27b04029b0fd917563725d72a3c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 13:21:56 +0200 Subject: [PATCH 303/967] Remove {fmt} support from convenience header --- include/boost/decimal.hpp | 4 ---- 1 file changed, 4 deletions(-) diff --git a/include/boost/decimal.hpp b/include/boost/decimal.hpp index 00e7fd678..eb28e95dd 100644 --- a/include/boost/decimal.hpp +++ b/include/boost/decimal.hpp @@ -45,10 +45,6 @@ #include #include -#ifndef BOOST_DECIMAL_BUILD_MODULE -#include -#endif - #if defined(__clang__) && !defined(__GNUC__) # pragma clang diagnostic pop #endif From fae4ed492b1224b2f536cfed25baa858c95a5a00 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 13:22:33 +0200 Subject: [PATCH 304/967] Update header include information in test and docs --- doc/modules/ROOT/pages/format.adoc | 6 ++++-- test/test_format_fmtlib.cpp | 1 + 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index b5af291f3..91d19fa95 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -71,13 +71,15 @@ int main() [#fmt_format] == `` -Support for `{fmt}` is available as long as `` is present. +Support for `{fmt}` is also available. All the above information on modifiers is the same for fmtlib, just in a different namespace (i.e. `fmt::` instead of `std::`). +The header `` is *NOT* part of the convenience header, because it is an optional dependency on a potentially compiled library. [source, c++] ---- #include -#include // or +#include +#include #include int main() diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index 33de3e276..7e79e2c3c 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -9,6 +9,7 @@ #define FMT_HEADER_ONLY #include +#include #include #include From c88023f7a215e43a92508af965764c6f7220f0a4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 13:44:41 +0200 Subject: [PATCH 305/967] Avoid double counting digits in normalization process --- include/boost/decimal/decimal128_t.hpp | 2 +- include/boost/decimal/decimal32_t.hpp | 2 +- include/boost/decimal/decimal64_t.hpp | 2 +- include/boost/decimal/detail/fenv_rounding.hpp | 4 +--- include/boost/decimal/detail/normalize.hpp | 2 +- 5 files changed, 5 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 50ec691ab..fef79398c 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -728,7 +728,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept { if (coeff > detail::d128_max_significand_value || biased_exp < 0) { - coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign); + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); } } diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 334e5e41b..5eeb811c7 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -635,7 +635,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI auto biased_exp {static_cast(exp + detail::bias)}; if (coeff > detail::d32_max_significand_value || biased_exp < 0) { - coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign); + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); } auto reduced_coeff {static_cast(coeff)}; diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index afb7f2172..5c6e82276 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -629,7 +629,7 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept auto biased_exp {static_cast(exp) + detail::bias_v}; if (coeff > detail::d64_max_significand_value || biased_exp < 0) { - coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign); + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); } auto reduced_coeff {static_cast(coeff)}; diff --git a/include/boost/decimal/detail/fenv_rounding.hpp b/include/boost/decimal/detail/fenv_rounding.hpp index 6297ba62a..7acf79dbd 100644 --- a/include/boost/decimal/detail/fenv_rounding.hpp +++ b/include/boost/decimal/detail/fenv_rounding.hpp @@ -182,14 +182,12 @@ constexpr auto fenv_round(T& val, bool is_neg = false, bool sticky = false) noex #endif template -constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bool sign) noexcept +constexpr auto coefficient_rounding(T1& coeff, T2& exp, T3& biased_exp, const bool sign, int coeff_digits) noexcept { // T1 will be a 128-bit or 256-bit using sig_type = typename TargetDecimalType::significand_type; using demoted_integer_type = std::conditional_t::digits10 < std::numeric_limits::digits10, T1, sig_type>; - auto coeff_digits {detail::num_digits(coeff)}; - // How many digits need to be shifted? const auto shift_for_large_coeff {(coeff_digits - detail::precision_v) - 1}; int shift {}; diff --git a/include/boost/decimal/detail/normalize.hpp b/include/boost/decimal/detail/normalize.hpp index a2f1f35e7..5af8890d1 100644 --- a/include/boost/decimal/detail/normalize.hpp +++ b/include/boost/decimal/detail/normalize.hpp @@ -31,7 +31,7 @@ constexpr auto normalize(T1& significand, T2& exp, bool sign = false) noexcept - else if (digits > target_precision) { auto biased_exp {static_cast(exp) + detail::bias_v}; - detail::coefficient_rounding(significand, exp, biased_exp, sign); + detail::coefficient_rounding(significand, exp, biased_exp, sign, digits); } } From b9dcbee656e44121b82d1312a9bd1fa925f898e1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 15:58:14 +0200 Subject: [PATCH 306/967] Add reproducer test set --- test/Jamfile | 3 +++ test/github_issue_1112.cpp | 27 +++++++++++++++++++++++++++ 2 files changed, 30 insertions(+) create mode 100644 test/github_issue_1112.cpp diff --git a/test/Jamfile b/test/Jamfile index dc1b781dc..66f1b598c 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -48,6 +48,7 @@ run-fail benchmark_uint256.cpp ; run compare_dec128_and_fast.cpp ; compile-fail concepts_test.cpp ; + run crash_report_1.cpp ; run github_issue_426.cpp ; run github_issue_448.cpp ; @@ -69,6 +70,8 @@ run github_issue_1057.cpp ; compile-fail github_issue_1087.cpp ; run github_issue_1091.cpp ; run github_issue_1094.cpp ; +run github_issue_1112.cpp ; + run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; run random_decimal32_comp.cpp ; diff --git a/test/github_issue_1112.cpp b/test/github_issue_1112.cpp new file mode 100644 index 000000000..504583d4e --- /dev/null +++ b/test/github_issue_1112.cpp @@ -0,0 +1,27 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1112 + +#include +#include + +using namespace boost::decimal; + +template +void reproducer() +{ + const auto dec_res {static_cast(nearbyint(T{2325, -1}))}; + const auto dbl_res {static_cast(std::nearbyint(232.5))}; + BOOST_TEST_EQ(dec_res, dbl_res); +} + +int main() +{ + reproducer(); + reproducer(); + reproducer(); + + return boost::report_errors(); +} From a4f6671182aee8d3ed0e47136f0005617bbee08e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 15:58:45 +0200 Subject: [PATCH 307/967] Use fenv rounding to achieve correct value --- include/boost/decimal/detail/cmath/rint.hpp | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/include/boost/decimal/detail/cmath/rint.hpp b/include/boost/decimal/detail/cmath/rint.hpp index b087931a8..1e01a4fd0 100644 --- a/include/boost/decimal/detail/cmath/rint.hpp +++ b/include/boost/decimal/detail/cmath/rint.hpp @@ -28,20 +28,15 @@ namespace decimal { namespace detail { -template -constexpr auto rint_impl(T1& sig, T2 exp, const bool) +template +constexpr auto rint_impl(T1& sig, T2 exp, const bool is_neg) { const T2 abs_exp { (exp < T2(0)) ? -exp : exp }; - sig /= detail::pow10(static_cast(abs_exp - 1)); + const auto res {detail::impl::divmod(sig, detail::pow10(static_cast(abs_exp - 1)))}; + sig = res.quotient; - const auto trailing_num {static_cast(sig % 10U)}; - sig /= 10U; - - if (trailing_num >= 5U) - { - ++sig; - } + detail::fenv_round(sig, is_neg, res.remainder != 0U); } // MSVC 14.1 warns of unary minus being applied to unsigned type from numeric_limits::min @@ -97,7 +92,7 @@ constexpr auto lrint_impl(const T num) noexcept -> Int return 0; } - detail::rint_impl(sig, expptr, is_neg); + detail::rint_impl(sig, expptr, is_neg); auto res {static_cast(sig)}; if (is_neg) @@ -147,7 +142,7 @@ constexpr auto rint(const T num) noexcept return is_neg ? -zero : zero; } - detail::rint_impl(sig, expptr, is_neg); + detail::rint_impl(sig, expptr, is_neg); return {sig, 0, is_neg}; } From 695741febecf7acf4fbe961ddcdf3ea3e1d56ff9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 16:15:19 +0200 Subject: [PATCH 308/967] Test upwards and downwards runtime rounding modes --- test/github_issue_1112.cpp | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/test/github_issue_1112.cpp b/test/github_issue_1112.cpp index 504583d4e..ae2c1ea6b 100644 --- a/test/github_issue_1112.cpp +++ b/test/github_issue_1112.cpp @@ -17,11 +17,43 @@ void reproducer() BOOST_TEST_EQ(dec_res, dbl_res); } +template +void test_rounding_up() +{ + const auto mode {boost::decimal::fesetround(rounding_mode::fe_dec_upward)}; + if (mode != rounding_mode::fe_dec_default) + { + const T value {2325, -1}; // The result will be wrong if computed at compile time + const auto dec_res {static_cast(nearbyint(value))}; + BOOST_TEST_EQ(dec_res, 233); + } +} + +template +void test_rounding_down() +{ + const auto mode {boost::decimal::fesetround(rounding_mode::fe_dec_downward)}; + if (mode != rounding_mode::fe_dec_default) + { + const T value {2325, -1}; // The result will be wrong if computed at compile time + const auto dec_res {static_cast(nearbyint(value))}; + BOOST_TEST_EQ(dec_res, 232); + } +} + int main() { reproducer(); reproducer(); reproducer(); + test_rounding_up(); + test_rounding_up(); + test_rounding_up(); + + test_rounding_down(); + test_rounding_down(); + test_rounding_down(); + return boost::report_errors(); } From a9f30408d8e336c333b1a614db1e1f1245ac0ff1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 13 Oct 2025 18:56:32 +0200 Subject: [PATCH 309/967] Better force runtime evaluation --- test/github_issue_1112.cpp | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/test/github_issue_1112.cpp b/test/github_issue_1112.cpp index ae2c1ea6b..253bda161 100644 --- a/test/github_issue_1112.cpp +++ b/test/github_issue_1112.cpp @@ -6,6 +6,10 @@ #include #include +#include + +static std::mt19937_64 rng(42); +std::uniform_int_distribution<> dist(-1, -1); using namespace boost::decimal; @@ -23,7 +27,7 @@ void test_rounding_up() const auto mode {boost::decimal::fesetround(rounding_mode::fe_dec_upward)}; if (mode != rounding_mode::fe_dec_default) { - const T value {2325, -1}; // The result will be wrong if computed at compile time + const T value {2325, dist(rng)}; // The result will be wrong if computed at compile time const auto dec_res {static_cast(nearbyint(value))}; BOOST_TEST_EQ(dec_res, 233); } @@ -35,7 +39,7 @@ void test_rounding_down() const auto mode {boost::decimal::fesetround(rounding_mode::fe_dec_downward)}; if (mode != rounding_mode::fe_dec_default) { - const T value {2325, -1}; // The result will be wrong if computed at compile time + const T value {2325, dist(rng)}; // The result will be wrong if computed at compile time const auto dec_res {static_cast(nearbyint(value))}; BOOST_TEST_EQ(dec_res, 232); } From 532706d9182b1868b0d57074582271a3b6427bcd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 08:13:31 +0200 Subject: [PATCH 310/967] Add windows arm runner --- .github/workflows/ci.yml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 1ba8b3a5c..cec72789f 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -529,6 +529,10 @@ jobs: cxxstd: "03,11,14,17" # 20 has ICE addrmd: "64" os: windows-latest + - toolset: msvc-14.3 + cxxstd: "14,17,20,latest" + addrmd: "64" + os: windows-11-arm runs-on: ${{matrix.os}} From 187f2881d89f38d9e58849991d79382b4cbf1426 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 08:22:10 +0200 Subject: [PATCH 311/967] Only define BOOSTDECIMAL_ADD_CARRY for Win AMD64 --- include/boost/decimal/detail/config.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/config.hpp b/include/boost/decimal/detail/config.hpp index 72be6f1b7..5bd26614f 100644 --- a/include/boost/decimal/detail/config.hpp +++ b/include/boost/decimal/detail/config.hpp @@ -90,7 +90,7 @@ # ifndef BOOST_DECIMAL_BUILD_MODULE # include # endif -# if defined(_WIN64) +# if defined(_M_AMD64) # define BOOST_DECIMAL_HAS_MSVC_64BIT_INTRINSICS # else # define BOOST_DECIMAL_HAS_MSVC_32BIT_INTRINSICS From 7717333831fc472ccb7cf351b1a4c438d8c72c8a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 08:55:57 +0200 Subject: [PATCH 312/967] Test every 128-bit power of zero from constants table --- test/test_remove_trailing_zeros.cpp | 25 +++---------------------- 1 file changed, 3 insertions(+), 22 deletions(-) diff --git a/test/test_remove_trailing_zeros.cpp b/test/test_remove_trailing_zeros.cpp index 3e58a63a9..4a66a53f8 100644 --- a/test/test_remove_trailing_zeros.cpp +++ b/test/test_remove_trailing_zeros.cpp @@ -39,30 +39,11 @@ void test() void test_extended() { using namespace boost::decimal; - constexpr std::array powers_of_10 = - {{ - boost::int128::uint128_t {UINT64_C(0x5), UINT64_C(0x6BC75E2D63100000)}, - boost::int128::uint128_t {UINT64_C(0x36), UINT64_C(0x35C9ADC5DEA00000)}, - boost::int128::uint128_t {UINT64_C(0x21E), UINT64_C(0x19E0C9BAB2400000)}, - boost::int128::uint128_t {UINT64_C(0x152D), UINT64_C(0x02C7E14AF6800000)}, - boost::int128::uint128_t {UINT64_C(0x84595), UINT64_C(0x161401484A000000)}, - boost::int128::uint128_t {UINT64_C(0x52B7D2), UINT64_C(0xDCC80CD2E4000000)}, - boost::int128::uint128_t {UINT64_C(0x33B2E3C), UINT64_C(0x9FD0803CE8000000)}, - boost::int128::uint128_t {UINT64_C(0x204FCE5E), UINT64_C(0x3E25026110000000)}, - boost::int128::uint128_t {UINT64_C(0x1431E0FAE), UINT64_C(0x6D7217CAA0000000)}, - boost::int128::uint128_t {UINT64_C(0xC9F2C9CD0), UINT64_C(0x4674EDEA40000000)}, - boost::int128::uint128_t {UINT64_C(0x7E37BE2022), UINT64_C(0xC0914B2680000000)}, - boost::int128::uint128_t {UINT64_C(0x4EE2D6D415B), UINT64_C(0x85ACEF8100000000)}, - boost::int128::uint128_t {UINT64_C(0x314DC6448D93), UINT64_C(0x38C15B0A00000000)}, - boost::int128::uint128_t {UINT64_C(0x1ED09BEAD87C0), UINT64_C(0x378D8E6400000000)}, - boost::int128::uint128_t {UINT64_C(0x13426172C74D82), UINT64_C(0x2B878FE800000000)}, - boost::int128::uint128_t {UINT64_C(0xC097CE7BC90715), UINT64_C(0xB34B9F1000000000)}, - boost::int128::uint128_t {UINT64_C(0x785EE10D5DA46D9), UINT64_C(0x00F436A000000000)}, - boost::int128::uint128_t {UINT64_C(0x4B3B4CA85A86C47A), UINT64_C(0x098A224000000000)} - }}; + const auto powers_of_10 = detail::impl::BOOST_DECIMAL_DETAIL_INT128_pow10; - for (const auto& val : powers_of_10) + for (std::size_t i {}; i < 39; ++i) { + const auto val = powers_of_10[i]; const auto temp {boost::decimal::detail::remove_trailing_zeros(val)}; if (!BOOST_TEST_EQ(temp.trimmed_number, boost::int128::uint128_t(1))) { From 04510ebaf7bd7b594575ee9e89a01270180ab02a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 08:56:10 +0200 Subject: [PATCH 313/967] Redo constants table --- include/boost/decimal/detail/power_tables.hpp | 243 +++++++++--------- 1 file changed, 119 insertions(+), 124 deletions(-) diff --git a/include/boost/decimal/detail/power_tables.hpp b/include/boost/decimal/detail/power_tables.hpp index 3e0e9f83c..327d5cd3d 100644 --- a/include/boost/decimal/detail/power_tables.hpp +++ b/include/boost/decimal/detail/power_tables.hpp @@ -35,53 +35,52 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE std::uint64_t powers_of_10[20] = UINT64_C(10000000000000000000) }; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE boost::int128::uint128_t BOOST_DECIMAL_DETAIL_INT128_pow10[] = +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE boost::int128::uint128_t BOOST_DECIMAL_DETAIL_INT128_pow10[39] = { - boost::int128::uint128_t {UINT64_C(0), UINT64_C(1)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(10)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(100)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(1000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(10000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(100000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(1000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(10000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(100000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(1000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(10000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(100000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(1000000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(10000000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(100000000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(1000000000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(10000000000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(100000000000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(1000000000000000000)}, - boost::int128::uint128_t {UINT64_C(0), UINT64_C(10000000000000000000)}, - boost::int128::uint128_t {UINT64_C(5), UINT64_C(7766279631452241920)}, - boost::int128::uint128_t {UINT64_C(54), UINT64_C(3875820019684212736)}, - boost::int128::uint128_t {UINT64_C(542), UINT64_C(1864712049423024128)}, - boost::int128::uint128_t {UINT64_C(5421), UINT64_C(200376420520689664)}, - boost::int128::uint128_t {UINT64_C(54210), UINT64_C(2003764205206896640)}, - boost::int128::uint128_t {UINT64_C(542101), UINT64_C(1590897978359414784)}, - boost::int128::uint128_t {UINT64_C(5421010), UINT64_C(15908979783594147840)}, - boost::int128::uint128_t {UINT64_C(54210108), UINT64_C(11515845246265065472)}, - boost::int128::uint128_t {UINT64_C(542101086), UINT64_C(4477988020393345024)}, - boost::int128::uint128_t {UINT64_C(5421010862), UINT64_C(7886392056514347008)}, - boost::int128::uint128_t {UINT64_C(54210108624), UINT64_C(5076944270305263616)}, - boost::int128::uint128_t {UINT64_C(542101086242), UINT64_C(13875954555633532928)}, - boost::int128::uint128_t {UINT64_C(5421010862427), UINT64_C(9632337040368467968)}, - boost::int128::uint128_t {UINT64_C(54210108624275), UINT64_C(4089650035136921600)}, - boost::int128::uint128_t {UINT64_C(542101086242752), UINT64_C(4003012203950112768)}, - boost::int128::uint128_t {UINT64_C(5421010862427522), UINT64_C(3136633892082024448)}, - boost::int128::uint128_t {UINT64_C(54210108624275221), UINT64_C(12919594847110692864)}, - boost::int128::uint128_t {UINT64_C(542101086242752217), UINT64_C(68739955140067328)}, - boost::int128::uint128_t {UINT64_C(5421010862427522170), UINT64_C(687399551400673280)}, - boost::int128::uint128_t {UINT64_C(17316620476856118468), UINT64_C(6873995514006732800)}, + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(1000000000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(10000000000000000000000000000000000000), + BOOST_DECIMAL_DETAIL_INT128_UINT128_C(100000000000000000000000000000000000000) }; #ifdef BOOST_DECIMAL_HAS_INT128 -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE detail::builtin_uint128_t builtin_128_pow10[] = { +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE detail::builtin_uint128_t builtin_128_pow10[39] = { detail::builtin_uint128_t(1), detail::builtin_uint128_t(10), detail::builtin_uint128_t(100), @@ -121,92 +120,88 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE detail::builtin_uint128_t builtin_128_po detail::builtin_uint128_t(10000000000000000000ULL) * detail::builtin_uint128_t(100000000000000000), detail::builtin_uint128_t(10000000000000000000ULL) * detail::builtin_uint128_t(1000000000000000000), detail::builtin_uint128_t(10000000000000000000ULL) * detail::builtin_uint128_t(10000000000000000000ULL), - detail::builtin_uint128_t(10000000000000000000ULL) * detail::builtin_uint128_t(10000000000000000000ULL) * detail::builtin_uint128_t(10ULL), }; -static_assert(sizeof(builtin_128_pow10) == sizeof(boost::decimal::detail::builtin_uint128_t) * 40, "Should have 10^0 to 10^39"); - #endif -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE u256 u256_pow_10[] = { - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(100)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(100000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(100000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(100000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(100000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1000000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10000000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(100000000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(1000000000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(0), UINT64_C(10000000000000000000)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(5), UINT64_C(7766279631452241920)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(54), UINT64_C(3875820019684212736)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(542), UINT64_C(1864712049423024128)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(5421), UINT64_C(200376420520689664)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(54210), UINT64_C(2003764205206896640)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(542101), UINT64_C(1590897978359414784)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(5421010), UINT64_C(15908979783594147840)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(54210108), UINT64_C(11515845246265065472)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(542101086), UINT64_C(4477988020393345024)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(5421010862), UINT64_C(7886392056514347008)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(54210108624), UINT64_C(5076944270305263616)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(542101086242), UINT64_C(13875954555633532928)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(5421010862427), UINT64_C(9632337040368467968)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(54210108624275), UINT64_C(4089650035136921600)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(542101086242752), UINT64_C(4003012203950112768)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(5421010862427522), UINT64_C(3136633892082024448)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(54210108624275221), UINT64_C(12919594847110692864)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(542101086242752217), UINT64_C(68739955140067328)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(0)}, boost::int128::uint128_t{UINT64_C(5421010862427522170), UINT64_C(687399551400673280)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(2)}, boost::int128::uint128_t{UINT64_C(17316620476856118468), UINT64_C(6873995514006732800)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(29)}, boost::int128::uint128_t{UINT64_C(7145508105175220139), UINT64_C(13399722918938673152)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(293)}, boost::int128::uint128_t{UINT64_C(16114848830623546549), UINT64_C(4870020673419870208)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(2938)}, boost::int128::uint128_t{UINT64_C(13574535716559052564), UINT64_C(11806718586779598848)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(29387)}, boost::int128::uint128_t{UINT64_C(6618148649623664334), UINT64_C(7386721425538678784)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(293873)}, boost::int128::uint128_t{UINT64_C(10841254275107988496), UINT64_C(80237960548581376)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(2938735)}, boost::int128::uint128_t{UINT64_C(16178822382532126880), UINT64_C(802379605485813760)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(29387358)}, boost::int128::uint128_t{UINT64_C(14214271235644855872), UINT64_C(8023796054858137600)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(293873587)}, boost::int128::uint128_t{UINT64_C(13015503840481697412), UINT64_C(6450984253743169536)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(2938735877)}, boost::int128::uint128_t{UINT64_C(1027829888850112811), UINT64_C(9169610316303040512)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(29387358770)}, boost::int128::uint128_t{UINT64_C(10278298888501128114), UINT64_C(17909126868192198656)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(293873587705)}, boost::int128::uint128_t{UINT64_C(10549268516463523069), UINT64_C(13070572018536022016)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(2938735877055)}, boost::int128::uint128_t{UINT64_C(13258964796087472617), UINT64_C(1578511669393358848)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(29387358770557)}, boost::int128::uint128_t{UINT64_C(3462439444907864858), UINT64_C(15785116693933588480)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(293873587705571)}, boost::int128::uint128_t{UINT64_C(16177650375369096972), UINT64_C(10277214349659471872)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(2938735877055718)}, boost::int128::uint128_t{UINT64_C(14202551164014556797), UINT64_C(10538423128046960640)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(29387358770557187)}, boost::int128::uint128_t{UINT64_C(12898303124178706663), UINT64_C(13150510911921848320)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(293873587705571876)}, boost::int128::uint128_t{UINT64_C(18302566799529756941), UINT64_C(2377900603251621888)}}, - u256{boost::int128::uint128_t{UINT64_C(0), UINT64_C(2938735877055718769)}, boost::int128::uint128_t{UINT64_C(17004971331911604867), UINT64_C(5332261958806667264)}}, - u256{boost::int128::uint128_t{UINT64_C(1), UINT64_C(10940614696847636083)}, boost::int128::uint128_t{UINT64_C(4029016655730084128), UINT64_C(16429131440647569408)}}, - u256{boost::int128::uint128_t{UINT64_C(15), UINT64_C(17172426599928602752)}, boost::int128::uint128_t{UINT64_C(3396678409881738056), UINT64_C(16717361816799281152)}}, - u256{boost::int128::uint128_t{UINT64_C(159), UINT64_C(5703569335900062977)}, boost::int128::uint128_t{UINT64_C(15520040025107828953), UINT64_C(1152921504606846976)}}, - u256{boost::int128::uint128_t{UINT64_C(1593), UINT64_C(1695461137871974930)}, boost::int128::uint128_t{UINT64_C(7626447661401876602), UINT64_C(11529215046068469760)}}, - u256{boost::int128::uint128_t{UINT64_C(15930), UINT64_C(16954611378719749304)}, boost::int128::uint128_t{UINT64_C(2477500319180559562), UINT64_C(4611686018427387904)}}, - u256{boost::int128::uint128_t{UINT64_C(159309), UINT64_C(3525417123811528497)}, boost::int128::uint128_t{UINT64_C(6328259118096044006), UINT64_C(9223372036854775808)}}, - u256{boost::int128::uint128_t{UINT64_C(1593091), UINT64_C(16807427164405733357)}, boost::int128::uint128_t{UINT64_C(7942358959831785217), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(15930919), UINT64_C(2053574980671369030)}, boost::int128::uint128_t{UINT64_C(5636613303479645706), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(159309191), UINT64_C(2089005733004138687)}, boost::int128::uint128_t{UINT64_C(1025900813667802212), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(1593091911), UINT64_C(2443313256331835254)}, boost::int128::uint128_t{UINT64_C(10259008136678022120), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(15930919111), UINT64_C(5986388489608800929)}, boost::int128::uint128_t{UINT64_C(10356360998232463120), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(159309191113), UINT64_C(4523652674959354447)}, boost::int128::uint128_t{UINT64_C(11329889613776873120), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(1593091911132), UINT64_C(8343038602174441244)}, boost::int128::uint128_t{UINT64_C(2618431695511421504), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(15930919111324), UINT64_C(9643409726906205977)}, boost::int128::uint128_t{UINT64_C(7737572881404663424), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(159309191113245), UINT64_C(4200376900514301694)}, boost::int128::uint128_t{UINT64_C(3588752519208427776), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(1593091911132452), UINT64_C(5110280857723913709)}, boost::int128::uint128_t{UINT64_C(17440781118374726144), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(15930919111324522), UINT64_C(14209320429820033867)}, boost::int128::uint128_t{UINT64_C(8387114520361296896), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(159309191113245227), UINT64_C(12965995782233477362)}, boost::int128::uint128_t{UINT64_C(10084168908774762496), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(1593091911132452277), UINT64_C(532749306367912313)}, boost::int128::uint128_t{UINT64_C(8607968719199866880), UINT64_C(0)}}, - u256{boost::int128::uint128_t{UINT64_C(15930919111324522770), UINT64_C(5327493063679123134)}, boost::int128::uint128_t{UINT64_C(12292710897160462336), UINT64_C(0)}}, +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE u256 u256_pow_10[78] = { + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[0]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[1]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[2]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[3]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[4]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[5]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[6]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[7]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[8]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[9]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[10]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[11]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[12]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[13]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[14]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[15]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[16]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[17]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[18]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[19]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[20]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[21]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[22]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[23]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[24]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[25]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[26]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[27]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[28]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[29]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[30]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[31]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[32]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[33]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[34]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[35]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[36]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[37]}, + u256{BOOST_DECIMAL_DETAIL_INT128_pow10[38]}, + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[1]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[2]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[3]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[4]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[5]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[6]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[7]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[8]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[9]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[10]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[11]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[12]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[13]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[14]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[15]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[16]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[17]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[18]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[19]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[20]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[21]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[22]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[23]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[24]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[25]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[26]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[27]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[28]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[29]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[30]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[31]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[32]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[33]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[34]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[35]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[36]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[37]), + umul256(BOOST_DECIMAL_DETAIL_INT128_pow10[38], BOOST_DECIMAL_DETAIL_INT128_pow10[38]) }; } // namespace impl From 2d228e467adc98bb53bc6bcf633c7a2a16f43ddd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 09:17:53 +0200 Subject: [PATCH 314/967] Add reproducer test set --- test/Jamfile | 1 + test/github_issue_1110.cpp | 68 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 69 insertions(+) create mode 100644 test/github_issue_1110.cpp diff --git a/test/Jamfile b/test/Jamfile index 66f1b598c..4f20149c4 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -70,6 +70,7 @@ run github_issue_1057.cpp ; compile-fail github_issue_1087.cpp ; run github_issue_1091.cpp ; run github_issue_1094.cpp ; +run github_issue_1110.cpp ; run github_issue_1112.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; diff --git a/test/github_issue_1110.cpp b/test/github_issue_1110.cpp new file mode 100644 index 000000000..3a3c27d76 --- /dev/null +++ b/test/github_issue_1110.cpp @@ -0,0 +1,68 @@ +// Copyright 2025 Christopher Kormanyos +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1110 + +#include +#include +#include + +#include + +#include +#include +#include + +using namespace boost::decimal; + +namespace local { + +auto test() -> void; + +auto test() -> void +{ + const boost::decimal::decimal128_t one { 1 }; + const boost::decimal::decimal128_t del { 1, -32 }; + const boost::decimal::decimal128_t sum { one + del }; + + const boost::decimal::decimal128_t sqr { sqrt(sum) }; + + { + std::stringstream strm { }; + + strm << std::setprecision(std::numeric_limits::digits10) << sqr; + + BOOST_TEST_CSTR_EQ(strm.str().c_str(), "1.000000000000000000000000000000005"); + } + + const boost::decimal::decimal128_t cbr { cbrt(sum) }; + + { + std::stringstream strm { }; + + strm << std::setprecision(std::numeric_limits::digits10)<< cbr; + + // TODO: This tolerance isn't the best + BOOST_TEST_CSTR_EQ(strm.str().c_str(), "1.000000000000000000000000000000641"); + } + + const boost::decimal::decimal128_t lgt { log10(sum) }; + + { + std::stringstream strm { }; + + strm << std::setprecision(std::numeric_limits::digits10)<< lgt; + + BOOST_TEST_CSTR_EQ(strm.str().c_str(), "4.4e-33"); + } +} + +} // namespace local + +auto main() -> int +{ + local::test(); + + return boost::report_errors(); +} From 26b474e7699a086d974f848e3cb0797e5a198572 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 09:18:00 +0200 Subject: [PATCH 315/967] Remove bad cast --- include/boost/decimal/detail/cmath/cbrt.hpp | 2 +- include/boost/decimal/detail/cmath/log10.hpp | 2 +- include/boost/decimal/detail/cmath/sqrt.hpp | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/detail/cmath/cbrt.hpp b/include/boost/decimal/detail/cmath/cbrt.hpp index 884ac8ea3..bc983480a 100644 --- a/include/boost/decimal/detail/cmath/cbrt.hpp +++ b/include/boost/decimal/detail/cmath/cbrt.hpp @@ -61,7 +61,7 @@ constexpr auto cbrt_impl(const T x) noexcept remove_trailing_zeros(gn) }; - const bool is_pure { static_cast(zeros_removal.trimmed_number) == 1U }; + const bool is_pure { zeros_removal.trimmed_number == 1U }; if(is_pure) { diff --git a/include/boost/decimal/detail/cmath/log10.hpp b/include/boost/decimal/detail/cmath/log10.hpp index 3b3b32bec..49f3a95f4 100644 --- a/include/boost/decimal/detail/cmath/log10.hpp +++ b/include/boost/decimal/detail/cmath/log10.hpp @@ -63,7 +63,7 @@ constexpr auto log10_impl(const T x) noexcept remove_trailing_zeros(gn) }; - const bool is_pure { static_cast(zeros_removal.trimmed_number) == 1U }; + const bool is_pure { zeros_removal.trimmed_number == 1U }; if(is_pure) { diff --git a/include/boost/decimal/detail/cmath/sqrt.hpp b/include/boost/decimal/detail/cmath/sqrt.hpp index e68dcb36d..3e4b5942c 100644 --- a/include/boost/decimal/detail/cmath/sqrt.hpp +++ b/include/boost/decimal/detail/cmath/sqrt.hpp @@ -61,7 +61,7 @@ constexpr auto sqrt_impl(const T x) noexcept remove_trailing_zeros(gn) }; - const bool is_pure { static_cast(zeros_removal.trimmed_number) == 1U }; + const bool is_pure { zeros_removal.trimmed_number == 1U }; constexpr T one { 1 }; From 0ae5554fd1da39aa03d24c4e7fbe531daced7e20 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 09:47:10 +0200 Subject: [PATCH 316/967] Ignore padding warnings --- include/boost/decimal/decimal_fast128_t.hpp | 9 +++++++++ include/boost/decimal/detail/components.hpp | 9 +++++++++ include/boost/decimal/detail/ryu/ryu_generic_128.hpp | 9 +++++++++ 3 files changed, 27 insertions(+) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 14825ca17..f3dd05998 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -39,6 +39,11 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits = UINT64_M } // namespace detail +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4324) // Structure was padded due to alignment specifier +#endif + BOOST_DECIMAL_EXPORT class decimal_fast128_t final { public: @@ -396,6 +401,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; }; +#ifdef _MSC_VER +# pragma warning(pop) +#endif + #ifdef BOOST_DECIMAL_HAS_CONCEPTS template #else diff --git a/include/boost/decimal/detail/components.hpp b/include/boost/decimal/detail/components.hpp index 0e37c4647..4b5a7f35e 100644 --- a/include/boost/decimal/detail/components.hpp +++ b/include/boost/decimal/detail/components.hpp @@ -18,6 +18,11 @@ namespace detail { namespace impl { +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4324) // Structure was padded due to alignment specifier +#endif + template struct decimal_components { @@ -69,6 +74,10 @@ using decimal128_t_components = impl::decimal_components; +#ifdef _MSC_VER +# pragma warning(pop) +#endif + } // namespace detail } // namespace decimal } // namespace boost diff --git a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp index e14e0a69a..db0e3d6ee 100644 --- a/include/boost/decimal/detail/ryu/ryu_generic_128.hpp +++ b/include/boost/decimal/detail/ryu/ryu_generic_128.hpp @@ -31,6 +31,11 @@ namespace ryu { BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE int32_t fd128_exceptional_exponent = 0x7FFFFFFF; BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE unsigned_128_type one = 1; +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4324) // Structure was padded due to alignment specifier +#endif + struct floating_decimal_128 { unsigned_128_type mantissa; @@ -38,6 +43,10 @@ struct floating_decimal_128 bool sign; }; +#ifdef _MSC_VER +# pragma warning(pop) +#endif + #ifdef BOOST_DECIMAL_DEBUG_RYU static char* s(unsigned_128_type v) { int len = num_digits(v); From e2d2e2a5257a4d23a28ec7750dbd1e163ef87f60 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 10:28:15 +0200 Subject: [PATCH 317/967] Document new implicit conversion macros --- doc/modules/ROOT/pages/api_reference.adoc | 2 ++ doc/modules/ROOT/pages/config.adoc | 6 +++++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/api_reference.adoc b/doc/modules/ROOT/pages/api_reference.adoc index 38569384b..6b418b499 100644 --- a/doc/modules/ROOT/pages/api_reference.adoc +++ b/doc/modules/ROOT/pages/api_reference.adoc @@ -51,6 +51,8 @@ enums, constants and macros that are provided in this library. | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_IOSTREAM`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_NO_CONSTEVAL_DETECTION`] | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_CLIB`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_CHARCONV`] | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DISABLE_EXCEPTIONS`] | xref:config.adoc#configuration_automatic[`BOOST_DECIMAL_HAS_STD_STRING_VIEW`] +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS`] | +| xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS`] | | xref:config.adoc#configuration_user[`BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`] | | xref:config.adoc#configuration_user[`BOOST_DECIMAL_FAST_MATH`] | | xref:config.adoc#configuration_user[`BOOST_DECIMAL_DEC_EVAL_METHOD`] | diff --git a/doc/modules/ROOT/pages/config.adoc b/doc/modules/ROOT/pages/config.adoc index ad5623e94..c0b300b88 100644 --- a/doc/modules/ROOT/pages/config.adoc +++ b/doc/modules/ROOT/pages/config.adoc @@ -22,7 +22,9 @@ The following configuration macros are available: - `BOOST_DECIMAL_DISABLE_EXCEPTIONS`: This allows the user to disable any calls to `throw`. This macro will also be set automatically in the presence of `-fno-exceptions` or various `/EH` flags on MSVC. -- `BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`: Allows a binary floating-point type (e.g. `double`) to be implicitly converted to a decimal floating point type. +- `BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS`: Allows any integer type to be implicitly converted to any decimal type. + +- `BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS`: Allows a binary floating-point type (e.g. `double`) to be implicitly converted to a decimal floating point type. This option is not recommended, but can be useful if you want to use specific functionality from the standard library with internal conversions such as: [source, c++] @@ -36,6 +38,8 @@ std::complex test_val {half, half}; const auto res = std::acos(test_val); ---- +- `BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS`: Defines both `BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS` and `BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS` + - `BOOST_DECIMAL_FAST_MATH` performs optimizations similar to that of the `-ffast-math` compiler flag such as removing all checks for non-finite values. This flag increases the performance of the basis operations (e.g. add, sub, mul, div, and comparisons) by up to 20%. Again, it must be defined before inclusion of decimal headers like so: From 9de552863d951535545a4d496f6e9e5bcc5f4b24 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 10:35:46 +0200 Subject: [PATCH 318/967] Default to explicit conversions for integer --- include/boost/decimal/decimal128_t.hpp | 5 ++++- include/boost/decimal/decimal32_t.hpp | 5 ++++- include/boost/decimal/decimal64_t.hpp | 5 ++++- include/boost/decimal/decimal_fast128_t.hpp | 8 +++++++- include/boost/decimal/decimal_fast32_t.hpp | 8 +++++++- include/boost/decimal/decimal_fast64_t.hpp | 8 +++++++- 6 files changed, 33 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index fef79398c..f5c698ff3 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -218,7 +218,7 @@ BOOST_DECIMAL_EXPORT class decimal128_t final #else template , bool> = true> #endif - #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS) explicit #endif BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t(Float val) noexcept; @@ -243,6 +243,9 @@ BOOST_DECIMAL_EXPORT class decimal128_t final #else template , bool> = true> #endif + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS) + explicit + #endif constexpr decimal128_t(Integer val) noexcept; template diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 5eeb811c7..ea41a3e85 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -224,7 +224,7 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special #else template , bool> = true> #endif - #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS) explicit #endif BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t(Float val) noexcept; @@ -250,6 +250,9 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special #else template , bool> = true> #endif + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS) + explicit + #endif constexpr decimal32_t(Integer val) noexcept; template diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 5c6e82276..dec1ac67c 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -236,7 +236,7 @@ BOOST_DECIMAL_EXPORT class decimal64_t final #else template , bool> = true> #endif - #ifndef BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS) explicit #endif BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t(Float val) noexcept; @@ -262,6 +262,9 @@ BOOST_DECIMAL_EXPORT class decimal64_t final #else template , bool> = true> #endif + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS) + explicit + #endif constexpr decimal64_t(Integer val) noexcept; template diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 14825ca17..f70c3296c 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -178,6 +178,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #else template , bool> = true> #endif + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS) + explicit + #endif constexpr decimal_fast128_t(Integer val) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS @@ -185,7 +188,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #else template , bool> = true> #endif - explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(Float val) noexcept; + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS) + explicit + #endif + BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(Float val) noexcept; #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(long double val) noexcept = delete; diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 71405f541..7457d7deb 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -159,10 +159,16 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final explicit constexpr decimal_fast32_t(bool value) noexcept; template , bool> = true> + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS) + explicit + #endif constexpr decimal_fast32_t(Integer coeff) noexcept; template , bool> = true> - explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t(Float val) noexcept; + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS) + explicit + #endif + BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t(Float val) noexcept; #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit constexpr decimal_fast32_t(long double val) noexcept = delete; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index c6584c289..66a343172 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -189,6 +189,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final #else template , bool> = true> #endif + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS) + explicit + #endif constexpr decimal_fast64_t(Integer val) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS @@ -196,7 +199,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final #else template , bool> = true> #endif - explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t(Float val) noexcept; + #if !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_CONVERSIONS) && !defined(BOOST_DECIMAL_ALLOW_IMPLICIT_FLOAT_CONVERSIONS) + explicit + #endif + BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t(Float val) noexcept; #ifdef BOOST_DECIMAL_UNSUPPORTED_LONG_DOUBLE explicit constexpr decimal_fast64_t(long double val) noexcept = delete; From 72ae1e9db3df0844a65ff4a466ec1e1fb794f96b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 10:36:09 +0200 Subject: [PATCH 319/967] Allow implicit integer conversions for use with external libs --- examples/statistics.cpp | 3 +++ test/test_boost_math_univariate_stats.cpp | 3 +++ test/test_from_chars.cpp | 3 +++ test/test_implicit_integral_conversion.cpp | 3 +++ 4 files changed, 12 insertions(+) diff --git a/examples/statistics.cpp b/examples/statistics.cpp index 9f66af21e..d197ce84a 100644 --- a/examples/statistics.cpp +++ b/examples/statistics.cpp @@ -2,6 +2,9 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// Needed for operations with boost math +#define BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS + #include "where_file.hpp" #include #include diff --git a/test/test_boost_math_univariate_stats.cpp b/test/test_boost_math_univariate_stats.cpp index 9d5827a1c..4c7309338 100644 --- a/test/test_boost_math_univariate_stats.cpp +++ b/test/test_boost_math_univariate_stats.cpp @@ -9,6 +9,9 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +// Needed for operations with boost math +#define BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS + #include #if defined(__clang__) diff --git a/test/test_from_chars.cpp b/test/test_from_chars.cpp index 7ad0c7fa6..baabb199b 100644 --- a/test/test_from_chars.cpp +++ b/test/test_from_chars.cpp @@ -2,6 +2,9 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// Needed for operations with boost math +#define BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS + #include "mini_to_chars.hpp" #include #include diff --git a/test/test_implicit_integral_conversion.cpp b/test/test_implicit_integral_conversion.cpp index cbf055337..b124c7b30 100644 --- a/test/test_implicit_integral_conversion.cpp +++ b/test/test_implicit_integral_conversion.cpp @@ -2,6 +2,9 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// Needed for operations with boost math +#define BOOST_DECIMAL_ALLOW_IMPLICIT_INTEGER_CONVERSIONS + #include #include #include From 940c36090656f27fd5342abce23eff932b9abbe6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 14:09:28 +0200 Subject: [PATCH 320/967] Add `from_chars` supporting current rounding mode to design decisions Closes: #1115 --- doc/modules/ROOT/pages/design.adoc | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/modules/ROOT/pages/design.adoc b/doc/modules/ROOT/pages/design.adoc index ed2b6fc83..39d5f84bc 100644 --- a/doc/modules/ROOT/pages/design.adoc +++ b/doc/modules/ROOT/pages/design.adoc @@ -61,6 +61,11 @@ The standard for does not distinguish between underflow and overflow `boost::decimal::from_chars` modifies `value` in order to communicate this to the user in a divergence from the standard. This behavior is the same as that of https://www.boost.org/doc/libs/master/libs/charconv/doc/html/charconv.html#from_chars_usage_notes_for_from_chars_for_floating_point_types[`boost::charconv::from_chars_erange`]. +=== `from_chars` Supports Rounding Mode + +The pass:[C++] specification states that `from_chars` resulting value is to be rounded to nearest. +Since the types in this library are more sensitive to rounding mode differences, `from_chars` rounds using the current global rounding mode as reported by `fegetround()`. + [#non-finite-deviation] === `istream` of Non-finite Values is Allowed From dc9d6117af20e817016c85888b1583274959b47a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 09:35:50 +0200 Subject: [PATCH 321/967] Add reproducer test set --- test/Jamfile | 1 + test/github_issue_1106.cpp | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 test/github_issue_1106.cpp diff --git a/test/Jamfile b/test/Jamfile index 4f20149c4..37ee89a45 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -70,6 +70,7 @@ run github_issue_1057.cpp ; compile-fail github_issue_1087.cpp ; run github_issue_1091.cpp ; run github_issue_1094.cpp ; +run github_issue_1106.cpp ; run github_issue_1110.cpp ; run github_issue_1112.cpp ; diff --git a/test/github_issue_1106.cpp b/test/github_issue_1106.cpp new file mode 100644 index 000000000..a4bc72c2c --- /dev/null +++ b/test/github_issue_1106.cpp @@ -0,0 +1,35 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1094 + +#include +#include +#include + +using namespace boost::decimal; + +template +void test() +{ + const auto a {std::numeric_limits::lowest() / 99}; + const T b {1, 2}; + const auto c {a * b}; + + BOOST_TEST(isinf(c)); + BOOST_TEST(signbit(c)); +} + +int main() +{ + test(); + test(); + test(); + + test(); + test(); + test(); + + return boost::report_errors(); +} From df1439aaab2742098f8445f5e10d456afea80665 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 09:37:08 +0200 Subject: [PATCH 322/967] Add control from builtin floating point --- test/github_issue_1106.cpp | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/test/github_issue_1106.cpp b/test/github_issue_1106.cpp index a4bc72c2c..abaab6bd1 100644 --- a/test/github_issue_1106.cpp +++ b/test/github_issue_1106.cpp @@ -7,14 +7,18 @@ #include #include #include +#include using namespace boost::decimal; template void test() { + using std::isinf; + using std::signbit; + const auto a {std::numeric_limits::lowest() / 99}; - const T b {1, 2}; + const T b {100}; const auto c {a * b}; BOOST_TEST(isinf(c)); @@ -23,6 +27,9 @@ void test() int main() { + test(); + test(); + test(); test(); test(); From 445839d0ae658112c6c7c05c4b6ed1764e62a032 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 15:57:19 +0200 Subject: [PATCH 323/967] Also check division path for errors --- test/github_issue_1106.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/github_issue_1106.cpp b/test/github_issue_1106.cpp index abaab6bd1..88ddb2b18 100644 --- a/test/github_issue_1106.cpp +++ b/test/github_issue_1106.cpp @@ -23,6 +23,11 @@ void test() BOOST_TEST(isinf(c)); BOOST_TEST(signbit(c)); + + // The same as above in principle + const auto d {a / (1/b)}; + BOOST_TEST(isinf(d)); + BOOST_TEST(signbit(d)); } int main() From 8bf490c15b99aab1fd157e2bcd8f00ce903f6b4d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 15:57:51 +0200 Subject: [PATCH 324/967] Use existing mul impl --- include/boost/decimal/decimal_fast32_t.hpp | 24 ++++------------------ 1 file changed, 4 insertions(+), 20 deletions(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 7457d7deb..0bb2f3a73 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -121,6 +121,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template friend constexpr auto detail::add_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + template + friend constexpr auto detail::mul_impl(const T& lhs, const T& rhs) noexcept -> ReturnType; + template BOOST_DECIMAL_FORCE_INLINE friend constexpr auto fast_equality_impl(const DecimalType& lhs, const DecimalType& rhs) noexcept -> bool; @@ -902,26 +905,7 @@ constexpr auto operator*(const decimal_fast32_t lhs, const decimal_fast32_t rhs) } #endif - using mul_type = std::uint_fast64_t; - - const auto isneg {lhs.sign_ != rhs.sign_}; - constexpr auto ten_pow_seven {detail::pow10(static_cast(6))}; - constexpr auto ten_pow_seven_exp_offset {95}; - constexpr auto ten_pow_six {detail::pow10(static_cast(5))}; - constexpr auto ten_pow_six_exp_offset {96}; - - auto res_sig {(static_cast(lhs.significand_) * static_cast(rhs.significand_))}; - const bool res_sig_14_dig {res_sig > UINT64_C(10000000000000)}; - res_sig /= res_sig_14_dig ? ten_pow_seven : ten_pow_six; - auto res_exp {lhs.exponent_ + rhs.exponent_}; - res_exp -= res_sig_14_dig ? ten_pow_seven_exp_offset : ten_pow_six_exp_offset; - - res_exp += detail::fenv_round(res_sig, isneg); - - BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); - BOOST_DECIMAL_ASSERT(res_exp <= 9'999'999 || res_sig == 0U); - - return direct_init(static_cast(res_sig), static_cast(res_exp) , isneg); + return detail::mul_impl(lhs, rhs); } template From d194c07f0375880e431ce7a2918f9e67217ebff8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 16:06:29 +0200 Subject: [PATCH 325/967] Use correct accessor functions --- include/boost/decimal/detail/div_impl.hpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/div_impl.hpp b/include/boost/decimal/detail/div_impl.hpp index a7fd2b829..245d45278 100644 --- a/include/boost/decimal/detail/div_impl.hpp +++ b/include/boost/decimal/detail/div_impl.hpp @@ -32,13 +32,13 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto generic_div_impl(const T& lhs, const T constexpr auto precision_offset {std::numeric_limits::digits10 - precision}; constexpr auto ten_pow_offset {detail::pow10(static_cast(precision_offset))}; - const auto big_sig_lhs {lhs.sig * ten_pow_offset}; + const auto big_sig_lhs {lhs.full_significand() * ten_pow_offset}; - const auto res_sig {big_sig_lhs / rhs.sig}; - const auto res_exp {(lhs.exp - precision_offset) - rhs.exp}; + const auto res_sig {big_sig_lhs / rhs.full_significand()}; + const auto res_exp {(lhs.biased_exponent() - precision_offset) - rhs.biased_exponent()}; // Normalizes sign handling - bool sign {lhs.sign != rhs.sign}; + bool sign {lhs.isneg() != rhs.isneg()}; if (BOOST_DECIMAL_UNLIKELY(res_sig == 0U)) { sign = false; From 2f8641963dab36cdade41d65ad0c772f2bc74285 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 10 Oct 2025 16:06:46 +0200 Subject: [PATCH 326/967] Use generic impl instead of incorrect custom impl --- include/boost/decimal/decimal_fast32_t.hpp | 41 +++------------------- 1 file changed, 4 insertions(+), 37 deletions(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 0bb2f3a73..e75ead9a8 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -147,6 +147,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::generic_div_impl(const T& lhs, const T& rhs) noexcept -> DecimalType; + public: constexpr decimal_fast32_t() noexcept = default; @@ -991,43 +994,7 @@ constexpr auto div_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, static_cast(r); #endif - #ifdef BOOST_DECIMAL_DEBUG - std::cerr << "sig lhs: " << sig_lhs - << "\nexp lhs: " << exp_lhs - << "\nsig rhs: " << sig_rhs - << "\nexp rhs: " << exp_rhs << std::endl; - #endif - - using local_signed_exponent_type = std::common_type_t; - - static_assert(sizeof(local_signed_exponent_type) >= 4, "Error in local exponent type definition"); - - // We promote to uint64 since the significands are currently 32-bits - // By appending enough zeros to the LHS we end up finding what we need anyway - constexpr auto ten_pow_precision {detail::pow10(static_cast(detail::precision_v))}; - const auto big_sig_lhs {static_cast(lhs.significand_) * ten_pow_precision}; - auto res_sig {big_sig_lhs / static_cast(rhs.significand_)}; - local_signed_exponent_type res_exp {static_cast(lhs.exponent_) - static_cast(rhs.exponent_) + 94}; - const auto isneg {lhs.sign_ != rhs.sign_}; - - // If we have 8 figures round it down to 7 - if (res_sig >= UINT64_C(10'000'000)) - { - res_exp += detail::fenv_round(res_sig, isneg); - } - - BOOST_DECIMAL_ASSERT(res_sig >= 1'000'000 || res_sig == 0U); - BOOST_DECIMAL_ASSERT(res_exp <= 9'999'999 || res_sig == 0U); - - if (BOOST_DECIMAL_LIKELY(res_exp >= 0)) - { - q = direct_init(static_cast(res_sig), static_cast(res_exp), isneg); - } - else - { - // Flush to zero - q = zero; - } + q = detail::generic_div_impl(lhs, rhs); } constexpr auto mod_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, const decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void From dcb102a957313d06b20e3ae49623d0f6e1f961e2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 12:41:36 +0200 Subject: [PATCH 327/967] Fix unused variable warning --- include/boost/decimal/decimal_fast32_t.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index e75ead9a8..dec12b126 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -946,9 +946,9 @@ constexpr auto operator*(const Integer lhs, const decimal_fast32_t rhs) noexcept constexpr auto div_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, decimal_fast32_t& q, decimal_fast32_t& r) noexcept -> void { - constexpr decimal_fast32_t zero {0, 0}; - #ifndef BOOST_DECIMAL_FAST_MATH + constexpr decimal_fast32_t zero {0, 0}; + const bool sign {lhs.isneg() != rhs.isneg()}; constexpr decimal_fast32_t nan {direct_init(detail::d32_fast_qnan, UINT8_C(0), false)}; constexpr decimal_fast32_t inf {direct_init(detail::d32_fast_inf, UINT8_C(0), false)}; From e5eb072fb6133427accc5b3ec895689ccb42e81c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 12:51:25 +0200 Subject: [PATCH 328/967] Fix decimal_fast32_t normalization in constructor --- include/boost/decimal/decimal_fast32_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index dec12b126..b135054f9 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -419,7 +419,7 @@ constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, bool sign) noexce sign_ = sign; // Normalize in the constructor, so we never have to worry about it again - detail::normalize(min_coeff, exp, sign); + detail::normalize(min_coeff, exp, sign); significand_ = static_cast(min_coeff); From 4fc844cad341d24f930e4d635c0d4d2901aecab6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:20:06 +0200 Subject: [PATCH 329/967] Don't run tests for builtins on MSVC --- test/github_issue_1106.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/test/github_issue_1106.cpp b/test/github_issue_1106.cpp index 88ddb2b18..e5bd3dc52 100644 --- a/test/github_issue_1106.cpp +++ b/test/github_issue_1106.cpp @@ -32,8 +32,10 @@ void test() int main() { + #ifndef _MSC_VER test(); test(); + #endif test(); test(); From a84e07666f6ad73cb8be883480240caddbe8d99b Mon Sep 17 00:00:00 2001 From: ckormanyos Date: Tue, 14 Oct 2025 19:54:16 +0200 Subject: [PATCH 330/967] Up the Newton iterations in cbrt --- include/boost/decimal/detail/cmath/cbrt.hpp | 6 +++--- include/boost/decimal/detail/cmath/sqrt.hpp | 2 +- test/github_issue_1110.cpp | 3 +-- 3 files changed, 5 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/detail/cmath/cbrt.hpp b/include/boost/decimal/detail/cmath/cbrt.hpp index bc983480a..97e13065d 100644 --- a/include/boost/decimal/detail/cmath/cbrt.hpp +++ b/include/boost/decimal/detail/cmath/cbrt.hpp @@ -131,14 +131,14 @@ constexpr auto cbrt_impl(const T x) noexcept (five + gx * (seventy + gx * 56)) / (numbers::cbrt2_v * (fourteen + gx * (seventy + gx * 20))); - // Perform 2, 3 or 4 Newton-Raphson iterations depending on precision. + // Perform 3, 4 or 5 Newton-Raphson iterations depending on precision. // Note from above, we start with slightly more than 2 decimal digits // of accuracy. constexpr int iter_loops { - std::numeric_limits::digits10 < 10 ? 2 - : std::numeric_limits::digits10 < 20 ? 3 : 4 + std::numeric_limits::digits10 < 10 ? 3 + : std::numeric_limits::digits10 < 20 ? 4 : 5 }; for (int idx = 0; idx < iter_loops; ++idx) diff --git a/include/boost/decimal/detail/cmath/sqrt.hpp b/include/boost/decimal/detail/cmath/sqrt.hpp index 3e4b5942c..1135fd9ac 100644 --- a/include/boost/decimal/detail/cmath/sqrt.hpp +++ b/include/boost/decimal/detail/cmath/sqrt.hpp @@ -123,7 +123,7 @@ constexpr auto sqrt_impl(const T x) noexcept (one + gx * ((one + gx) * 20)) / (numbers::sqrt2_v * ((gx * 4) * (five + gx) + five)); - // Perform 2, 3 or 4 Newton-Raphson iterations depending on precision. + // Perform 3, 4 or 5 Newton-Raphson iterations depending on precision. // Note from above, we start with slightly more than 2 decimal digits // of accuracy. diff --git a/test/github_issue_1110.cpp b/test/github_issue_1110.cpp index 3a3c27d76..db571f011 100644 --- a/test/github_issue_1110.cpp +++ b/test/github_issue_1110.cpp @@ -43,8 +43,7 @@ auto test() -> void strm << std::setprecision(std::numeric_limits::digits10)<< cbr; - // TODO: This tolerance isn't the best - BOOST_TEST_CSTR_EQ(strm.str().c_str(), "1.000000000000000000000000000000641"); + BOOST_TEST_CSTR_EQ(strm.str().c_str(), "1.000000000000000000000000000000003"); } const boost::decimal::decimal128_t lgt { log10(sum) }; From 97640bf47c1339518b05dd1311b230e99c177cd3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 14:49:33 +0200 Subject: [PATCH 331/967] Add reproducer test set --- test/Jamfile | 1 + test/github_issue_1105.cpp | 40 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) create mode 100644 test/github_issue_1105.cpp diff --git a/test/Jamfile b/test/Jamfile index 37ee89a45..9741cf80d 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -70,6 +70,7 @@ run github_issue_1057.cpp ; compile-fail github_issue_1087.cpp ; run github_issue_1091.cpp ; run github_issue_1094.cpp ; +run github_issue_1105.cpp ; run github_issue_1106.cpp ; run github_issue_1110.cpp ; run github_issue_1112.cpp ; diff --git a/test/github_issue_1105.cpp b/test/github_issue_1105.cpp new file mode 100644 index 000000000..8276095c5 --- /dev/null +++ b/test/github_issue_1105.cpp @@ -0,0 +1,40 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1105 + +#include +#include + +using namespace boost::decimal; + +template +void test() +{ + const T one {1, 0}; + const T zero {0, 0}; + + const T val {1, -5}; + int val_exp {}; + const auto val_sig {frexp10(val, &val_exp)}; + + const auto next {nextafter(val, one)}; + int next_exp {}; + const auto next_sig {frexp10(next, &next_exp)}; + BOOST_TEST_EQ(next_exp, val_exp); + BOOST_TEST_EQ(next_sig, val_sig + 1u); + + const auto prev {nextafter(val, zero)}; + int prev_exp {}; + const auto prev_sig {frexp10(prev, &prev_exp)}; + BOOST_TEST_EQ(prev_exp, val_exp - 1); + BOOST_TEST_EQ(prev_sig, val_sig - 1u); +} + +int main() +{ + test(); + + return boost::report_errors(); +} From 760d6d6f6d5e19b890c289c28ea280f14ec4b1a5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:34:56 +0200 Subject: [PATCH 332/967] Fix boundary test case --- test/github_issue_1105.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/github_issue_1105.cpp b/test/github_issue_1105.cpp index 8276095c5..7be57d2a5 100644 --- a/test/github_issue_1105.cpp +++ b/test/github_issue_1105.cpp @@ -29,7 +29,7 @@ void test() int prev_exp {}; const auto prev_sig {frexp10(prev, &prev_exp)}; BOOST_TEST_EQ(prev_exp, val_exp - 1); - BOOST_TEST_EQ(prev_sig, val_sig - 1u); + BOOST_TEST_EQ(prev_sig, detail::max_significand_v); } int main() From 84b94fe6103a17efc18bcee894ee66806739c6d6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:35:03 +0200 Subject: [PATCH 333/967] Revamp impl --- include/boost/decimal/detail/cmath/next.hpp | 53 +++++++++++++-------- 1 file changed, 34 insertions(+), 19 deletions(-) diff --git a/include/boost/decimal/detail/cmath/next.hpp b/include/boost/decimal/detail/cmath/next.hpp index 022ca07b3..a5b43f060 100644 --- a/include/boost/decimal/detail/cmath/next.hpp +++ b/include/boost/decimal/detail/cmath/next.hpp @@ -34,8 +34,7 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc { constexpr DecimalType zero {0}; - // Val < direction = + - // Val > direction = - + const bool is_neg {val < 0}; const auto abs_val {abs(val)}; if (val == zero) @@ -44,32 +43,48 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc -std::numeric_limits::denorm_min()}; return min_val; } - else if (abs_val > zero && abs_val < std::numeric_limits::epsilon()) - { - auto exp {val.biased_exponent()}; - auto significand {val.full_significand()}; - direction ? ++significand : --significand; - return {significand, exp, val.isneg()}; - } + const auto components {val.to_components()}; + auto sig {components.sig}; + auto exp {components.exp}; + const auto removed_zeros {remove_trailing_zeros(sig)}; + const auto sig_dig {num_digits(sig)}; - const auto val_eps {direction ? val + std::numeric_limits::epsilon() : - val - std::numeric_limits::epsilon()}; + // Our two boundaries + const bool is_pow_10 {removed_zeros.trimmed_number == 1U}; + const bool is_max_sig {sig == detail::max_significand_v}; - // If adding epsilon does nothing, then we need to manipulate the representation - if (val == val_eps) + if (sig_dig < detail::precision_v) { - int exp {} ; - auto significand {frexp10(val, &exp)}; - - direction ? ++significand : --significand; + const auto offset{detail::precision_v - sig_dig}; + sig *= pow10(static_cast(detail::precision_v - sig_dig)); + exp -= offset; + } - return DecimalType{significand, exp}; + if (direction) + { + // Val < direction = + + ++sig; + if (is_max_sig) + { + sig /= 10u; + ++exp; + } } else { - return val_eps; + // Val > direction = - + --sig; + if (is_pow_10) + { + // 1000 becomes 999 but needs to be 9999 + sig *= 10u; + sig += 9u; + --exp; + } } + + return DecimalType{sig, exp, is_neg}; } } // namespace detail From 3a856fc64e644937fa6a75f5aa57b0ccbedadd12 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:36:43 +0200 Subject: [PATCH 334/967] Auto normalize with frexp10 --- include/boost/decimal/detail/cmath/next.hpp | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) diff --git a/include/boost/decimal/detail/cmath/next.hpp b/include/boost/decimal/detail/cmath/next.hpp index a5b43f060..120baa2e5 100644 --- a/include/boost/decimal/detail/cmath/next.hpp +++ b/include/boost/decimal/detail/cmath/next.hpp @@ -44,23 +44,14 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc return min_val; } - const auto components {val.to_components()}; - auto sig {components.sig}; - auto exp {components.exp}; - const auto removed_zeros {remove_trailing_zeros(sig)}; - const auto sig_dig {num_digits(sig)}; + int exp {}; + auto sig {frexp10(val, &exp)}; + const auto removed_zeros(remove_trailing_zeros(sig)); // Our two boundaries const bool is_pow_10 {removed_zeros.trimmed_number == 1U}; const bool is_max_sig {sig == detail::max_significand_v}; - if (sig_dig < detail::precision_v) - { - const auto offset{detail::precision_v - sig_dig}; - sig *= pow10(static_cast(detail::precision_v - sig_dig)); - exp -= offset; - } - if (direction) { // Val < direction = + From 251d0a3b33c1bcd4c9e863d5d0b47481017d2c12 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:39:08 +0200 Subject: [PATCH 335/967] Force runtime evaluation --- test/github_issue_1105.cpp | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/test/github_issue_1105.cpp b/test/github_issue_1105.cpp index 7be57d2a5..bf88fbbb4 100644 --- a/test/github_issue_1105.cpp +++ b/test/github_issue_1105.cpp @@ -6,16 +6,21 @@ #include #include +#include + +static std::mt19937_64 rng(42); using namespace boost::decimal; template void test() { - const T one {1, 0}; + std::uniform_int_distribution dist(1, 1); + + const T one {dist(rng), 0}; const T zero {0, 0}; - const T val {1, -5}; + const T val {dist(rng), -5}; int val_exp {}; const auto val_sig {frexp10(val, &val_exp)}; @@ -23,7 +28,7 @@ void test() int next_exp {}; const auto next_sig {frexp10(next, &next_exp)}; BOOST_TEST_EQ(next_exp, val_exp); - BOOST_TEST_EQ(next_sig, val_sig + 1u); + BOOST_TEST_EQ(next_sig, val_sig + 1U); const auto prev {nextafter(val, zero)}; int prev_exp {}; @@ -35,6 +40,8 @@ void test() int main() { test(); + test(); + test(); return boost::report_errors(); } From 07ec53afe2faf328428c645c3c8fbce3e394208d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:42:03 +0200 Subject: [PATCH 336/967] Add denorm testing --- test/github_issue_1105.cpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/test/github_issue_1105.cpp b/test/github_issue_1105.cpp index bf88fbbb4..e14ab3cfb 100644 --- a/test/github_issue_1105.cpp +++ b/test/github_issue_1105.cpp @@ -35,6 +35,12 @@ void test() const auto prev_sig {frexp10(prev, &prev_exp)}; BOOST_TEST_EQ(prev_exp, val_exp - 1); BOOST_TEST_EQ(prev_sig, detail::max_significand_v); + + const auto zero_next {nextafter(zero, one)}; + BOOST_TEST_EQ(zero_next, std::numeric_limits::denorm_min()); + + const auto two_next_zero {nextafter(zero_next, one)}; + BOOST_TEST_EQ(two_next_zero, T(2, detail::etiny_v)); } int main() From dff8649827848ce7628cf9a0ba20045a7e4ab4f4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:44:51 +0200 Subject: [PATCH 337/967] Fix handling of denorms --- include/boost/decimal/detail/cmath/next.hpp | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/boost/decimal/detail/cmath/next.hpp b/include/boost/decimal/detail/cmath/next.hpp index 120baa2e5..4d049b87d 100644 --- a/include/boost/decimal/detail/cmath/next.hpp +++ b/include/boost/decimal/detail/cmath/next.hpp @@ -52,6 +52,13 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc const bool is_pow_10 {removed_zeros.trimmed_number == 1U}; const bool is_max_sig {sig == detail::max_significand_v}; + if (!isnormal(val)) + { + // Not to make sure that denorms aren't normalized + sig = removed_zeros.trimmed_number; + exp += removed_zeros.number_of_removed_zeros; + } + if (direction) { // Val < direction = + From 344d6d33e11b4ce69a2e9c355a7f3a91b6a8a1ee Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 16:48:00 +0200 Subject: [PATCH 338/967] Fix compiler warnings --- include/boost/decimal/detail/cmath/next.hpp | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/cmath/next.hpp b/include/boost/decimal/detail/cmath/next.hpp index 4d049b87d..ada64a1eb 100644 --- a/include/boost/decimal/detail/cmath/next.hpp +++ b/include/boost/decimal/detail/cmath/next.hpp @@ -35,7 +35,6 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc constexpr DecimalType zero {0}; const bool is_neg {val < 0}; - const auto abs_val {abs(val)}; if (val == zero) { @@ -56,7 +55,7 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc { // Not to make sure that denorms aren't normalized sig = removed_zeros.trimmed_number; - exp += removed_zeros.number_of_removed_zeros; + exp += static_cast(removed_zeros.number_of_removed_zeros); } if (direction) From e1975ab0eeac474a85940b7bac1860cd4627598f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 07:32:36 +0200 Subject: [PATCH 339/967] Test next after max sig --- test/github_issue_1105.cpp | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/test/github_issue_1105.cpp b/test/github_issue_1105.cpp index e14ab3cfb..5de27526b 100644 --- a/test/github_issue_1105.cpp +++ b/test/github_issue_1105.cpp @@ -36,6 +36,13 @@ void test() BOOST_TEST_EQ(prev_exp, val_exp - 1); BOOST_TEST_EQ(prev_sig, detail::max_significand_v); + // Max significand + 1 should be reduced + const auto original_val {nextafter(prev, one)}; + int original_exp {}; + const auto original_sig {frexp10(original_val, &original_exp)}; + BOOST_TEST_EQ(original_exp, val_exp); + BOOST_TEST_EQ(original_sig, val_sig); + const auto zero_next {nextafter(zero, one)}; BOOST_TEST_EQ(zero_next, std::numeric_limits::denorm_min()); From 90bccf0712e0b1aa3f1bf2e4052d956434ec361c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 11:00:35 +0200 Subject: [PATCH 340/967] Remove concrete types from charconv --- include/boost/decimal/charconv.hpp | 6 ------ 1 file changed, 6 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index e24fed325..20ba0887e 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -5,12 +5,6 @@ #ifndef BOOST_DECIMAL_CHARCONV_HPP #define BOOST_DECIMAL_CHARCONV_HPP -#include -#include -#include -#include -#include -#include #include #include #include From a4c7e66c35fb324c63e334127b904d7c5c929862 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 11:44:08 +0200 Subject: [PATCH 341/967] Add basic tests of string constructor --- test/Jamfile | 1 + test/test_string_construction.cpp | 51 +++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) create mode 100644 test/test_string_construction.cpp diff --git a/test/Jamfile b/test/Jamfile index 9741cf80d..a9f7ed947 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -173,6 +173,7 @@ run test_sin_cos.cpp ; run test_sinh.cpp ; run test_snprintf.cpp ; run test_sqrt.cpp ; +run test_string_construction.cpp ; run test_strtod.cpp ; run test_tan.cpp ; run test_tanh.cpp ; diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp new file mode 100644 index 000000000..1815dfb17 --- /dev/null +++ b/test/test_string_construction.cpp @@ -0,0 +1,51 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include + +using namespace boost::decimal; + +template +void test_trivial() +{ + const auto str = "42"; + const T str_val {str}; + const T int_val {42}; + BOOST_TEST_EQ(str_val, int_val); +} + +template +void test_throw() +{ + BOOST_TEST_THROWS(T("orange"), std::runtime_error); +} + +template +void test_nonfinite() +{ + const auto nan_str = "nan"; + const T nan_val {nan_str}; + BOOST_TEST(isnan(nan_val)); + BOOST_TEST(!signbit(nan_val)); + + const auto inf_str = "inf"; + const T inf_val {inf_str}; + BOOST_TEST(isinf(inf_val)); + BOOST_TEST(!signbit(inf_val)); + + const auto neg_inf_str = "-inf"; + const T neg_inf_val {neg_inf_str}; + BOOST_TEST(isinf(neg_inf_val)); + BOOST_TEST(signbit(neg_inf_val)); +} + +int main() +{ + test_trivial(); + test_throw(); + test_nonfinite(); + + return boost::report_errors(); +} From 4bde6410042805e9660f09e0d9bbf71036c5133b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 11:51:14 +0200 Subject: [PATCH 342/967] Add decimal32_t const char* constructor --- include/boost/decimal/charconv.hpp | 4 +- include/boost/decimal/decimal32_t.hpp | 18 +++++++++ include/boost/decimal/detail/from_string.hpp | 42 ++++++++++++++++++++ 3 files changed, 62 insertions(+), 2 deletions(-) create mode 100644 include/boost/decimal/detail/from_string.hpp diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 20ba0887e..51d17fec1 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -95,8 +95,8 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ } //namespace detail -BOOST_DECIMAL_EXPORT template -constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt = chars_format::general) noexcept -> from_chars_result +template +constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt) noexcept -> from_chars_result { return detail::from_chars_general_impl(first, last, value, fmt); } diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index ea41a3e85..86dc627d5 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -40,6 +40,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -301,6 +302,8 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special explicit constexpr decimal32_t(bool value) noexcept; + explicit constexpr decimal32_t(const char* str); + constexpr decimal32_t(const decimal32_t& val) noexcept = default; constexpr decimal32_t(decimal32_t&& val) noexcept = default; constexpr auto operator=(const decimal32_t& val) noexcept -> decimal32_t& = default; @@ -727,6 +730,21 @@ constexpr decimal32_t::decimal32_t(const T1 coeff, const T2 exp) noexcept : deci constexpr decimal32_t::decimal32_t(const bool value) noexcept : decimal32_t(static_cast(value), 0, false) {} +constexpr decimal32_t::decimal32_t(const char* str) +{ + decimal32_t v; + const auto r {from_chars(str, str + detail::strlen(str), v)}; + if (r) + { + *this = v; + } + else + { + bits_ = detail::d32_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + constexpr auto from_bits(const std::uint32_t bits) noexcept -> decimal32_t { decimal32_t result; diff --git a/include/boost/decimal/detail/from_string.hpp b/include/boost/decimal/detail/from_string.hpp new file mode 100644 index 000000000..891d53eef --- /dev/null +++ b/include/boost/decimal/detail/from_string.hpp @@ -0,0 +1,42 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_DETAIL_FROM_STRING_HPP +#define BOOST_DECIMAL_DETAIL_FROM_STRING_HPP + +#include +#include + +#ifndef BOOST_DECIMAL_BUILD_MODULE +#include +#endif // BOOST_DECIMAL_BUILD_MODULE + +namespace boost { +namespace decimal { + +// Forward decl needed for string constructor +BOOST_DECIMAL_EXPORT template +constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, chars_format fmt = chars_format::general) noexcept -> from_chars_result; + +namespace detail { + +template +constexpr auto construct_from_string(const char* str, const std::size_t len) -> T +{ + T v {}; + const auto r {from_chars(str, str + len, v)}; + if (!r) + { + v = std::numeric_limits::quiet_NaN(); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } + + return v; +} + +} // namespace detail +} // namespace decimal +} // namespace boost + +#endif // BOOST_DECIMAL_DETAIL_FROM_STRING_HPP From 8137c12a9c235538768e9d76a78d28809646a896 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 12:02:08 +0200 Subject: [PATCH 343/967] Add -fno-exceptions test and nullptr --- test/test_string_construction.cpp | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index 1815dfb17..02642bbe6 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -16,12 +16,25 @@ void test_trivial() BOOST_TEST_EQ(str_val, int_val); } +#ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS + template -void test_throw() +void test_invalid() { BOOST_TEST_THROWS(T("orange"), std::runtime_error); + BOOST_TEST_THROWS(T(nullptr), std::runtime_error); } +#else + +template +void test_invalid() +{ + BOOST_TEST(isnan(T("orange"))); +} + +#endif + template void test_nonfinite() { @@ -44,7 +57,7 @@ void test_nonfinite() int main() { test_trivial(); - test_throw(); + test_invalid(); test_nonfinite(); return boost::report_errors(); From 1ad9c54bfbd01e8dced74e6bed565e99193f1f1b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 12:02:17 +0200 Subject: [PATCH 344/967] More robust handling --- include/boost/decimal/decimal32_t.hpp | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 86dc627d5..54907160f 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -732,8 +732,23 @@ constexpr decimal32_t::decimal32_t(const bool value) noexcept : decimal32_t(stat constexpr decimal32_t::decimal32_t(const char* str) { + if (str == nullptr) + { + bits_ = detail::d32_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + const auto str_len {detail::strlen(first)}; decimal32_t v; - const auto r {from_chars(str, str + detail::strlen(str), v)}; + const auto r {from_chars(first, first + str_len, v)}; if (r) { *this = v; From 8f91ed8d244c4ce62148bfacec451e5240f476dd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 12:04:16 +0200 Subject: [PATCH 345/967] Test a fractional scientific value with a leading plus sign --- test/test_string_construction.cpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index 02642bbe6..6b004220c 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -14,6 +14,12 @@ void test_trivial() const T str_val {str}; const T int_val {42}; BOOST_TEST_EQ(str_val, int_val); + + // We allow plus signs here by popular demand + const auto str2 = "+1.2e+3"; + const T str2_val {str2}; + const T int2_val {12, 2}; + BOOST_TEST_EQ(str2_val, int2_val); } #ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS From 5f0d5f3975e9eacf41fbc9d07906f971dd6347c8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 13:19:35 +0200 Subject: [PATCH 346/967] Add null check --- include/boost/decimal/detail/utilities.hpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/boost/decimal/detail/utilities.hpp b/include/boost/decimal/detail/utilities.hpp index 9a362e38f..154d1d77c 100644 --- a/include/boost/decimal/detail/utilities.hpp +++ b/include/boost/decimal/detail/utilities.hpp @@ -27,6 +27,12 @@ template constexpr auto strlen(const T* str) noexcept -> std::size_t { std::size_t i {}; + + if (str == nullptr) + { + return i; + } + while (*str != '\0') { ++str; From 9ba0773331d2078c39c095e299e052c63716e23d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 13:20:40 +0200 Subject: [PATCH 347/967] Add construction from string and string_view --- include/boost/decimal/decimal32_t.hpp | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 54907160f..7e339dd26 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -215,6 +215,8 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + constexpr decimal32_t(const char* str, std::size_t len); + public: // 3.2.2.1 construct/copy/destroy: constexpr decimal32_t() noexcept = default; @@ -304,6 +306,12 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special explicit constexpr decimal32_t(const char* str); + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW + explicit inline decimal32_t(const std::string& str); + #else + explicit constexpr decimal32_t(std::string_view str); + #endif + constexpr decimal32_t(const decimal32_t& val) noexcept = default; constexpr decimal32_t(decimal32_t&& val) noexcept = default; constexpr auto operator=(const decimal32_t& val) noexcept -> decimal32_t& = default; @@ -730,9 +738,9 @@ constexpr decimal32_t::decimal32_t(const T1 coeff, const T2 exp) noexcept : deci constexpr decimal32_t::decimal32_t(const bool value) noexcept : decimal32_t(static_cast(value), 0, false) {} -constexpr decimal32_t::decimal32_t(const char* str) +constexpr decimal32_t::decimal32_t(const char* str, const std::size_t len) { - if (str == nullptr) + if (str == nullptr || len == 0) { bits_ = detail::d32_nan_mask; BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); @@ -746,9 +754,8 @@ constexpr decimal32_t::decimal32_t(const char* str) ++first; } - const auto str_len {detail::strlen(first)}; decimal32_t v; - const auto r {from_chars(first, first + str_len, v)}; + const auto r {from_chars(first, str + len, v)}; if (r) { *this = v; @@ -760,6 +767,14 @@ constexpr decimal32_t::decimal32_t(const char* str) } } +constexpr decimal32_t::decimal32_t(const char* str) : decimal32_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal32_t::decimal32_t(const std::string& str) : decimal32_t(str.c_str(), str.length()) {} +#else +constexpr decimal32_t::decimal32_t(std::string_view str) : decimal32_t(str.data(), str.length()) {} +#endif + constexpr auto from_bits(const std::uint32_t bits) noexcept -> decimal32_t { decimal32_t result; From 831209afe76d040c937ea6915865c1545e8188d6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 13:37:15 +0200 Subject: [PATCH 348/967] Add string tests --- test/test_string_construction.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index 6b004220c..c97305689 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -4,6 +4,7 @@ #include #include +#include using namespace boost::decimal; @@ -14,12 +15,14 @@ void test_trivial() const T str_val {str}; const T int_val {42}; BOOST_TEST_EQ(str_val, int_val); + BOOST_TEST_EQ(T{std::string(str)}, int_val); // We allow plus signs here by popular demand const auto str2 = "+1.2e+3"; const T str2_val {str2}; const T int2_val {12, 2}; BOOST_TEST_EQ(str2_val, int2_val); + BOOST_TEST_EQ(T{std::string(str2)}, int2_val); } #ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS @@ -29,6 +32,8 @@ void test_invalid() { BOOST_TEST_THROWS(T("orange"), std::runtime_error); BOOST_TEST_THROWS(T(nullptr), std::runtime_error); + BOOST_TEST_THROWS(T(""), std::runtime_error); + BOOST_TEST_THROWS(T(std::string{""}), std::runtime_error); } #else From 445bead9189048ad3315af623b11e85ffa551e84 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 13:43:14 +0200 Subject: [PATCH 349/967] Add new constructors to type doc page --- doc/modules/ROOT/pages/decimal32_t.adoc | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/doc/modules/ROOT/pages/decimal32_t.adoc b/doc/modules/ROOT/pages/decimal32_t.adoc index 18ec19387..a3517b867 100644 --- a/doc/modules/ROOT/pages/decimal32_t.adoc +++ b/doc/modules/ROOT/pages/decimal32_t.adoc @@ -54,6 +54,15 @@ explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t(Float val) noexcept; template explicit constexpr decimal32_t(Integer val) noexcept; +// Extension: Construction from (c)string +explicit constexpr decimal32_t(const char* str); + +#ifndef BOOST_DECIMAL_HAS_STRING_VIEW +explicit inline decimal32_t(const std::string& str); +#else +explicit constexpr decimal32_t(std::string_view str); +#endif + template constexpr decimal32_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; From c2b9395b8b419164c3a99e85b948057f0761e0cd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 14 Oct 2025 13:56:01 +0200 Subject: [PATCH 350/967] Add 64 bit string constructor --- doc/modules/ROOT/pages/decimal32_t.adoc | 2 +- doc/modules/ROOT/pages/decimal64_t.adoc | 9 +++++ include/boost/decimal/decimal32_t.hpp | 4 +-- include/boost/decimal/decimal64_t.hpp | 48 +++++++++++++++++++++++++ test/test_string_construction.cpp | 7 ++++ 5 files changed, 67 insertions(+), 3 deletions(-) diff --git a/doc/modules/ROOT/pages/decimal32_t.adoc b/doc/modules/ROOT/pages/decimal32_t.adoc index a3517b867..e81cf363e 100644 --- a/doc/modules/ROOT/pages/decimal32_t.adoc +++ b/doc/modules/ROOT/pages/decimal32_t.adoc @@ -57,7 +57,7 @@ explicit constexpr decimal32_t(Integer val) noexcept; // Extension: Construction from (c)string explicit constexpr decimal32_t(const char* str); -#ifndef BOOST_DECIMAL_HAS_STRING_VIEW +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW explicit inline decimal32_t(const std::string& str); #else explicit constexpr decimal32_t(std::string_view str); diff --git a/doc/modules/ROOT/pages/decimal64_t.adoc b/doc/modules/ROOT/pages/decimal64_t.adoc index 485beefbc..6c7b886d8 100644 --- a/doc/modules/ROOT/pages/decimal64_t.adoc +++ b/doc/modules/ROOT/pages/decimal64_t.adoc @@ -54,6 +54,15 @@ explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal64_t(Float val) noexcept; template explicit constexpr decimal64_t(Integer val) noexcept; +// Extension: Construction from (c)string +explicit constexpr decimal64_t(const char* str); + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +explicit inline decimal64_t(const std::string& str); +#else +explicit constexpr decimal64_t(std::string_view str); +#endif + template constexpr decimal64_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 7e339dd26..2ff8a15bb 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -770,9 +770,9 @@ constexpr decimal32_t::decimal32_t(const char* str, const std::size_t len) constexpr decimal32_t::decimal32_t(const char* str) : decimal32_t(str, detail::strlen(str)) {} #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW -inline decimal32_t::decimal32_t(const std::string& str) : decimal32_t(str.c_str(), str.length()) {} +inline decimal32_t::decimal32_t(const std::string& str) : decimal32_t(str.c_str(), str.size()) {} #else -constexpr decimal32_t::decimal32_t(std::string_view str) : decimal32_t(str.data(), str.length()) {} +constexpr decimal32_t::decimal32_t(std::string_view str) : decimal32_t(str.data(), str.size()) {} #endif constexpr auto from_bits(const std::uint32_t bits) noexcept -> decimal32_t diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index dec1ac67c..9259af54e 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -42,6 +42,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -222,6 +223,8 @@ BOOST_DECIMAL_EXPORT class decimal64_t final template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; + constexpr decimal64_t(const char* str, std::size_t len); + public: // 3.2.3.1 construct/copy/destroy constexpr decimal64_t() noexcept = default; @@ -338,6 +341,14 @@ BOOST_DECIMAL_EXPORT class decimal64_t final explicit constexpr decimal64_t(bool value) noexcept; + explicit constexpr decimal64_t(const char* str); + + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW + explicit inline decimal64_t(const std::string& str); + #else + explicit constexpr decimal64_t(std::string_view str); + #endif + // cmath functions that are easier as friends friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; @@ -803,6 +814,43 @@ constexpr auto decimal64_t::operator=(const Integer& val) noexcept return *this; } +constexpr decimal64_t::decimal64_t(const char* str, std::size_t len) +{ + if (str == nullptr || len == 0) + { + bits_ = detail::d64_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal64_t v; + const auto r {from_chars(first, str + len, v)}; + if (r) + { + *this = v; + } + else + { + bits_ = detail::d64_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal64_t::decimal64_t(const char* str) : decimal64_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal64_t::decimal64_t(const std::string& str) : decimal64_t(str.c_str(), str.size()) {} +#else +constexpr decimal64_t::decimal64_t(std::string_view str) : decimal64_t(str.data(), str.size()) {} +#endif + constexpr decimal64_t::operator bool() const noexcept { constexpr decimal64_t zero {0, 0}; diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index c97305689..e0bc4d4f1 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -42,6 +42,9 @@ template void test_invalid() { BOOST_TEST(isnan(T("orange"))); + BOOST_TEST(isnan(T(nullptr))); + BOOST_TEST(isnan(T(""))); + BOOST_TEST(isnan(T(std::string{""}))); } #endif @@ -71,5 +74,9 @@ int main() test_invalid(); test_nonfinite(); + test_trivial(); + test_invalid(); + test_nonfinite(); + return boost::report_errors(); } From 5c8090e36fea8ce08b0a35603a203245031e464e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 11:48:29 +0200 Subject: [PATCH 351/967] Add decimal128_t string constructor and testing --- include/boost/decimal/decimal128_t.hpp | 48 ++++++++++++++++++++++++++ test/test_string_construction.cpp | 4 +++ 2 files changed, 52 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index f5c698ff3..a8208e576 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -40,6 +40,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -205,6 +206,8 @@ BOOST_DECIMAL_EXPORT class decimal128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + constexpr decimal128_t(const char* str, std::size_t len); + public: // 3.2.4.1 construct/copy/destroy constexpr decimal128_t() noexcept = default; @@ -276,6 +279,14 @@ BOOST_DECIMAL_EXPORT class decimal128_t final explicit constexpr decimal128_t(bool value) noexcept; + explicit constexpr decimal128_t(const char* str); + + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW + explicit inline decimal128_t(const std::string& str); + #else + explicit constexpr decimal128_t(std::string_view str); + #endif + // 3.2.4.4 Conversion to integral type explicit constexpr operator bool() const noexcept; explicit constexpr operator int() const noexcept; @@ -891,6 +902,43 @@ constexpr decimal128_t::decimal128_t(const Decimal val) noexcept *this = to_decimal(val); } +constexpr decimal128_t::decimal128_t(const char* str, std::size_t len) +{ + if (str == nullptr || len == 0) + { + bits_ = detail::d128_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal128_t v; + const auto r {from_chars(first, str + len, v)}; + if (r) + { + *this = v; + } + else + { + bits_ = detail::d128_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal128_t::decimal128_t(const char* str) : decimal128_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal128_t::decimal128_t(const std::string& str) : decimal128_t(str.c_str(), str.size()) {} +#else +constexpr decimal128_t::decimal128_t(std::string_view str) : decimal128_t(str.data(), str.size()) {} +#endif + constexpr decimal128_t::operator bool() const noexcept { constexpr decimal128_t zero {0, 0}; diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index e0bc4d4f1..c184fc232 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -78,5 +78,9 @@ int main() test_invalid(); test_nonfinite(); + test_trivial(); + test_invalid(); + test_nonfinite(); + return boost::report_errors(); } From 0e6144543c1371bebea7e660aa3b1f12cf0d360b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 11:52:34 +0200 Subject: [PATCH 352/967] Add string constructor fuzzing --- fuzzing/fuzz_string_constructors.cpp | 30 + .../011df998ef737e7eec0a59dcb7840d57182b8038 | 1 + .../020a7af44170c4ed0e4e3d1f578d6f0fe7623d2e | 1 + .../02216b9eee161f937f717fab448d845d308149e3 | 1 + .../02740d73c1a50ae618f99a050d2f484a953c64b0 | 1 + 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fuzzing/seedcorpus/fuzz_strtod/fb6c14b8efa4f8844872f33db91f5b8195c43136 create mode 100644 fuzzing/seedcorpus/fuzz_strtod/fbde7ce9657042789e40729235b79eb676cec72d create mode 100644 fuzzing/seedcorpus/fuzz_strtod/fde7ea94eb806031185e8b4596be747a521a80cc create mode 100644 fuzzing/seedcorpus/fuzz_strtod/fea3b29291b269898651be5c1b719cb12cc031cf create mode 100644 fuzzing/seedcorpus/fuzz_strtod/ff672df6d83863b94c711a5ca44ea4d61660ca06 diff --git a/fuzzing/fuzz_string_constructors.cpp b/fuzzing/fuzz_string_constructors.cpp new file mode 100644 index 000000000..d6775a637 --- /dev/null +++ b/fuzzing/fuzz_string_constructors.cpp @@ -0,0 +1,30 @@ +// Copyright 2024 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include +#include +#include + +extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t* data, std::size_t size) +{ + try + { + auto c_data = reinterpret_cast(data); + const std::string c_data_str {c_data, size}; // Guarantee null termination since we can't pass the size argument + + const boost::decimal::decimal32_t d32_val {c_data_str}; + const boost::decimal::decimal64_t d64_val {c_data_str}; + const boost::decimal::decimal128_t d128_val {c_data_str}; + + static_cast(d32_val); + static_cast(d64_val); + static_cast(d128_val); + } + catch(...) + { + } + + return 0; +} diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/011df998ef737e7eec0a59dcb7840d57182b8038 b/fuzzing/seedcorpus/fuzz_from_chars_float/011df998ef737e7eec0a59dcb7840d57182b8038 new file mode 100644 index 000000000..b26cd1a63 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/011df998ef737e7eec0a59dcb7840d57182b8038 @@ -0,0 +1 @@ +844ÿ \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/020a7af44170c4ed0e4e3d1f578d6f0fe7623d2e b/fuzzing/seedcorpus/fuzz_from_chars_float/020a7af44170c4ed0e4e3d1f578d6f0fe7623d2e new file mode 100644 index 000000000..b031df15a --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/020a7af44170c4ed0e4e3d1f578d6f0fe7623d2e @@ -0,0 +1 @@ +.72AAAAAAAAAAAAAAAAAAA \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/02216b9eee161f937f717fab448d845d308149e3 b/fuzzing/seedcorpus/fuzz_from_chars_float/02216b9eee161f937f717fab448d845d308149e3 new file mode 100644 index 000000000..083343479 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/02216b9eee161f937f717fab448d845d308149e3 @@ -0,0 +1 @@ +-80927333333333333333333333333333333AAA.AAAAA833333333333333333333332333333333333333333333333333A3330000003339607008678161066A \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/02740d73c1a50ae618f99a050d2f484a953c64b0 b/fuzzing/seedcorpus/fuzz_from_chars_float/02740d73c1a50ae618f99a050d2f484a953c64b0 new file mode 100644 index 000000000..0bd5e3e3a --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/02740d73c1a50ae618f99a050d2f484a953c64b0 @@ -0,0 +1 @@ +61859bfffffffffffffffffffffffffffffffffffffffffffffffffffffff \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/028fb75e0c7120f36b6cb69e04328011e0a96d19 b/fuzzing/seedcorpus/fuzz_from_chars_float/028fb75e0c7120f36b6cb69e04328011e0a96d19 new file mode 100644 index 000000000..679b0b114 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/028fb75e0c7120f36b6cb69e04328011e0a96d19 @@ -0,0 +1 @@ +-0.52AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA( \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/0476a2dcf0699c325b7708af28a1d128a3ff5faa b/fuzzing/seedcorpus/fuzz_from_chars_float/0476a2dcf0699c325b7708af28a1d128a3ff5faa new file mode 100644 index 000000000..4e69cc306 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/0476a2dcf0699c325b7708af28a1d128a3ff5faa @@ -0,0 +1 @@ +4e0 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/04bb12fdc214a84f1b01d4f9ff60b54e8b8936f9 b/fuzzing/seedcorpus/fuzz_from_chars_float/04bb12fdc214a84f1b01d4f9ff60b54e8b8936f9 new file mode 100644 index 000000000..ba06f402d --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/04bb12fdc214a84f1b01d4f9ff60b54e8b8936f9 @@ -0,0 +1 @@ +AAA2AAA7 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/0642cbef16c3f13702c7692a870cd783b6212273 b/fuzzing/seedcorpus/fuzz_from_chars_float/0642cbef16c3f13702c7692a870cd783b6212273 new file mode 100644 index 000000000..09f1bdbb9 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/0642cbef16c3f13702c7692a870cd783b6212273 @@ -0,0 +1 @@ +-8092733333333333333333333333333331355e3333> \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/06770b045708289c220e187f4f87120cad7d1fb3 b/fuzzing/seedcorpus/fuzz_from_chars_float/06770b045708289c220e187f4f87120cad7d1fb3 new file mode 100644 index 000000000..8aae829ec --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_from_chars_float/06770b045708289c220e187f4f87120cad7d1fb3 @@ -0,0 +1,39 @@ +-0.7 +9e-265 +85e-37 +623e+10251086569.8071456 +-5332617826=3962755 +-5529685892.62735 +7657371750.1461525 +-6530555899.87366 +2450235224.9255543 +844521120146 +-9653912497.382019 +94997225114.9545956 +5288460984.511721 +4607250654.587957 +-1592934090.4738808 +-8327548253.165504 +-8071581185.957868 +-3894457067.979211 +7872439715.424465 +-9944999757.9318 +6729186819880939756e+20521118 +-1117470497.5896568 +8274863538.686867 +2709272301.989956 +4251086569.8071456 +-5332617826.3962755 +-5529685892.62735 +7657371750.1461525 +-6530555899.87366 +2450235224.9255543 +844521120146 +-9653912497.382019 +94997225114.9545956 +5288460984.51172«1 +46072506 +-4.4599414413418414e+20 +-7.939542985204633e+20 +-7.3428836122343107151308e+20 + diff --git a/fuzzing/seedcorpus/fuzz_from_chars_float/07347c8c8d9c697d517fc0f51ba74e8cb2a26b68 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b/fuzzing/seedcorpus/fuzz_strtod/ec776842a2bcd5d045633a674526f7f32085e555 @@ -0,0 +1 @@ +9180809180080080999999999999909999999999999044 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/eca59e5d9d93eaa3b8a3604431b27e213b961244 b/fuzzing/seedcorpus/fuzz_strtod/eca59e5d9d93eaa3b8a3604431b27e213b961244 new file mode 100644 index 000000000..d0407e4ab --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/eca59e5d9d93eaa3b8a3604431b27e213b961244 @@ -0,0 +1,91 @@ +-0.7 +9e-265 +85e-37 +623e+100 +3571e+263 +81661e+153 +920657e-23 +4603285e-24 +87575437e-3.9 +245540327e+122 +6138508175e+120 +83356057653e+193 +619534293513e+124 +2335141086879e+218 +36167929443327e-159 +609610927149051e-255 +3743626360493413e-165 +94080055902682397e-242 +899810892172646163e+283 +7120190517612959703e+120 +2050542607239644.9545956 +6580492884.511721 +460725069845352e+20 +2.439181502963422e+20 +-9.519026674833305e+20 +6.46635813153362e+20 +-8.915161226564948e+20 +5.843437877683319e+20 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+-3894457067.979211 +7872439715.424465 +-99449997866247594242e+20 +-7.507825977327728e+20 +7.664516908652013e+20 +-9.876107251051618e+298 +-2.2245820315289163e+298 +-4.36137874691906e+20 +7.898346319182928e+20 +3.65461464395618e+20 +8.4457.9318 +672918681.5396633 +-7981565732.591891 +5387835516.766457 +-483167149.6071758 +4920681763.602953 +-1513888746.1602364 +3706223463.98440475 +-1133439341.760744 +283120 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/ee2d91af829d2d7936ae70e8eabb0d3a80a5e817 b/fuzzing/seedcorpus/fuzz_strtod/ee2d91af829d2d7936ae70e8eabb0d3a80a5e817 new file mode 100644 index 000000000..11d92a2bf --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/ee2d91af829d2d7936ae70e8eabb0d3a80a5e817 @@ -0,0 +1 @@ +11808008099999999999999999999999998 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f3689a11195bec0993096768550b1ca19883c2bc b/fuzzing/seedcorpus/fuzz_strtod/f3689a11195bec0993096768550b1ca19883c2bc new file mode 100644 index 000000000..bba62cfd1 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f3689a11195bec0993096768550b1ca19883c2bc @@ -0,0 +1 @@ +9E05 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f371163b0be7a0d6b619a4fe98581cc8a555a421 b/fuzzing/seedcorpus/fuzz_strtod/f371163b0be7a0d6b619a4fe98581cc8a555a421 new file mode 100644 index 000000000..13e4f2cfa --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f371163b0be7a0d6b619a4fe98581cc8a555a421 @@ -0,0 +1 @@ +98370350570338031820.1........................3..3...3...............0..................8. \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f54338af0ebb664c1370622680defda872bc7c32 b/fuzzing/seedcorpus/fuzz_strtod/f54338af0ebb664c1370622680defda872bc7c32 new file mode 100644 index 000000000..7039a8060 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f54338af0ebb664c1370622680defda872bc7c32 @@ -0,0 +1 @@ +9e0000 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f58080c4f5bc8f14e0d148832483f3996a4d7393 b/fuzzing/seedcorpus/fuzz_strtod/f58080c4f5bc8f14e0d148832483f3996a4d7393 new file mode 100644 index 000000000..a52cb3e46 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f58080c4f5bc8f14e0d148832483f3996a4d7393 @@ -0,0 +1 @@ +9800832700 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f5982a144fe613ac6849a6b43ed08baf52161f52 b/fuzzing/seedcorpus/fuzz_strtod/f5982a144fe613ac6849a6b43ed08baf52161f52 new file mode 100644 index 000000000..bd34de2f0 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f5982a144fe613ac6849a6b43ed08baf52161f52 @@ -0,0 +1 @@ +iNF \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f5ab0673067d00fa9227cd8b7544c1f6a20a0c5c b/fuzzing/seedcorpus/fuzz_strtod/f5ab0673067d00fa9227cd8b7544c1f6a20a0c5c new file mode 100644 index 000000000..cb4b00639 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f5ab0673067d00fa9227cd8b7544c1f6a20a0c5c @@ -0,0 +1 @@ +128E92 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f77f04fb6bbc29a388247e2ace5e8aeb778aad0c b/fuzzing/seedcorpus/fuzz_strtod/f77f04fb6bbc29a388247e2ace5e8aeb778aad0c new file mode 100644 index 000000000..c5ceb2f4a --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f77f04fb6bbc29a388247e2ace5e8aeb778aad0c @@ -0,0 +1 @@ +.Z \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/f8be78b0d0194e487c8e219d809ec875ad70772c b/fuzzing/seedcorpus/fuzz_strtod/f8be78b0d0194e487c8e219d809ec875ad70772c new file mode 100644 index 000000000..a7bd3d31c --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/f8be78b0d0194e487c8e219d809ec875ad70772c @@ -0,0 +1 @@ +980800809999999999999999999999999000 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/fa60d9942f9385dcced990bf13d2fd3511f8c505 b/fuzzing/seedcorpus/fuzz_strtod/fa60d9942f9385dcced990bf13d2fd3511f8c505 new file mode 100644 index 000000000..6040820db --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/fa60d9942f9385dcced990bf13d2fd3511f8c505 @@ -0,0 +1 @@ +398398031827033189839803182727035053.82705 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/faf1631572e1d19b59a96de1bb71d047fdd030d5 b/fuzzing/seedcorpus/fuzz_strtod/faf1631572e1d19b59a96de1bb71d047fdd030d5 new file mode 100644 index 000000000..d361d6a36 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/faf1631572e1d19b59a96de1bb71d047fdd030d5 @@ -0,0 +1 @@ +9e9 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/fb0c125a2486b9707a53b731ba012af4e3789cb5 b/fuzzing/seedcorpus/fuzz_strtod/fb0c125a2486b9707a53b731ba012af4e3789cb5 new file mode 100644 index 000000000..3eed846e4 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/fb0c125a2486b9707a53b731ba012af4e3789cb5 @@ -0,0 +1 @@ +8e0 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/fb6c14b8efa4f8844872f33db91f5b8195c43136 b/fuzzing/seedcorpus/fuzz_strtod/fb6c14b8efa4f8844872f33db91f5b8195c43136 new file mode 100644 index 000000000..8df71c9c5 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/fb6c14b8efa4f8844872f33db91f5b8195c43136 @@ -0,0 +1 @@ +nan( \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/fbde7ce9657042789e40729235b79eb676cec72d b/fuzzing/seedcorpus/fuzz_strtod/fbde7ce9657042789e40729235b79eb676cec72d new file mode 100644 index 000000000..2b340399c --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/fbde7ce9657042789e40729235b79eb676cec72d @@ -0,0 +1 @@ +980809810809999999999999999999999999999 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/fde7ea94eb806031185e8b4596be747a521a80cc b/fuzzing/seedcorpus/fuzz_strtod/fde7ea94eb806031185e8b4596be747a521a80cc new file mode 100644 index 000000000..e21954863 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/fde7ea94eb806031185e8b4596be747a521a80cc @@ -0,0 +1 @@ +39839803182703182705 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/fea3b29291b269898651be5c1b719cb12cc031cf b/fuzzing/seedcorpus/fuzz_strtod/fea3b29291b269898651be5c1b719cb12cc031cf new file mode 100644 index 000000000..244c1e82b --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/fea3b29291b269898651be5c1b719cb12cc031cf @@ -0,0 +1 @@ +98120 \ No newline at end of file diff --git a/fuzzing/seedcorpus/fuzz_strtod/ff672df6d83863b94c711a5ca44ea4d61660ca06 b/fuzzing/seedcorpus/fuzz_strtod/ff672df6d83863b94c711a5ca44ea4d61660ca06 new file mode 100644 index 000000000..f47f54ce2 --- /dev/null +++ b/fuzzing/seedcorpus/fuzz_strtod/ff672df6d83863b94c711a5ca44ea4d61660ca06 @@ -0,0 +1 @@ +999999999999999999999999999999999994 \ No newline at end of file From f0f512923f5debd023430e1f8799223a09ea9ecd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 12:45:59 +0200 Subject: [PATCH 353/967] Add and test decimal_fast32_t string construction --- fuzzing/fuzz_string_constructors.cpp | 4 ++ include/boost/decimal/decimal_fast32_t.hpp | 47 ++++++++++++++++++++++ test/test_string_construction.cpp | 4 ++ 3 files changed, 55 insertions(+) diff --git a/fuzzing/fuzz_string_constructors.cpp b/fuzzing/fuzz_string_constructors.cpp index d6775a637..73dbd1213 100644 --- a/fuzzing/fuzz_string_constructors.cpp +++ b/fuzzing/fuzz_string_constructors.cpp @@ -18,9 +18,13 @@ extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t* data, std::size_t size const boost::decimal::decimal64_t d64_val {c_data_str}; const boost::decimal::decimal128_t d128_val {c_data_str}; + const boost::decimal::decimal_fast32_t df32_val {c_data_str}; + static_cast(d32_val); static_cast(d64_val); static_cast(d128_val); + + static_cast(df32_val); } catch(...) { diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index b135054f9..6c62081ea 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -150,6 +150,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template friend constexpr auto detail::generic_div_impl(const T& lhs, const T& rhs) noexcept -> DecimalType; + constexpr decimal_fast32_t(const char* str, std::size_t len); + public: constexpr decimal_fast32_t() noexcept = default; @@ -180,6 +182,14 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final explicit constexpr decimal_fast32_t(long double val) noexcept = delete; #endif + explicit constexpr decimal_fast32_t(const char* str); + + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW + explicit inline decimal_fast32_t(const std::string& str); + #else + explicit constexpr decimal_fast32_t(std::string_view str); + #endif + constexpr decimal_fast32_t(const decimal_fast32_t& val) noexcept = default; constexpr decimal_fast32_t(decimal_fast32_t&& val) noexcept = default; constexpr auto operator=(const decimal_fast32_t& val) noexcept -> decimal_fast32_t& = default; @@ -505,6 +515,43 @@ constexpr auto direct_init(const detail::decimal_fast32_t_components& x) noexcep return val; } +constexpr decimal_fast32_t::decimal_fast32_t(const char* str, const std::size_t len) +{ + if (str == nullptr || len == 0) + { + *this = direct_init(detail::d32_fast_qnan, UINT8_C((0))); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal_fast32_t v; + const auto r {from_chars(first, str + len, v)}; + if (r) + { + *this = v; + } + else + { + *this = direct_init(detail::d32_fast_qnan, UINT8_C((0))); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal_fast32_t::decimal_fast32_t(const char* str) : decimal_fast32_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal_fast32_t::decimal_fast32_t(const std::string& str) : decimal_fast32_t(str.c_str(), str.size()) {} +#else +constexpr decimal_fast32_t::decimal_fast32_t(std::string_view str) : decimal_fast32_t(str.data(), str.size()) {} +#endif + constexpr auto signbit(const decimal_fast32_t val) noexcept -> bool { return val.sign_; diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index c184fc232..8ac5b56c8 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -82,5 +82,9 @@ int main() test_invalid(); test_nonfinite(); + test_trivial(); + test_invalid(); + test_nonfinite(); + return boost::report_errors(); } From 8bb26959612782ca8ac11e4b66b7b77600b9e541 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 13:33:55 +0200 Subject: [PATCH 354/967] Add and test decimal_fast64_t string construction --- fuzzing/fuzz_string_constructors.cpp | 2 + include/boost/decimal/decimal_fast64_t.hpp | 47 ++++++++++++++++++++++ test/test_string_construction.cpp | 4 ++ 3 files changed, 53 insertions(+) diff --git a/fuzzing/fuzz_string_constructors.cpp b/fuzzing/fuzz_string_constructors.cpp index 73dbd1213..4288bc962 100644 --- a/fuzzing/fuzz_string_constructors.cpp +++ b/fuzzing/fuzz_string_constructors.cpp @@ -19,12 +19,14 @@ extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t* data, std::size_t size const boost::decimal::decimal128_t d128_val {c_data_str}; const boost::decimal::decimal_fast32_t df32_val {c_data_str}; + const boost::decimal::decimal_fast64_t df64_val {c_data_str}; static_cast(d32_val); static_cast(d64_val); static_cast(d128_val); static_cast(df32_val); + static_cast(df64_val); } catch(...) { diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 66a343172..92c1c612b 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -158,6 +158,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; + constexpr decimal_fast64_t(const char* str, std::size_t len); + public: constexpr decimal_fast64_t() noexcept = default; @@ -210,6 +212,14 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto direct_init_d64(decimal_fast64_t::significand_type significand, decimal_fast64_t::exponent_type exponent, bool sign) noexcept -> decimal_fast64_t; + explicit constexpr decimal_fast64_t(const char* str); + + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW + explicit inline decimal_fast64_t(const std::string& str); + #else + explicit constexpr decimal_fast64_t(std::string_view str); + #endif + // Classification functions friend constexpr auto signbit(decimal_fast64_t val) noexcept -> bool; friend constexpr auto isinf(decimal_fast64_t val) noexcept -> bool; @@ -513,6 +523,43 @@ constexpr auto direct_init_d64(const decimal_fast64_t::significand_type signific return val; } +constexpr decimal_fast64_t::decimal_fast64_t(const char* str, std::size_t len) +{ + if (str == nullptr || len == 0) + { + *this = direct_init_d64(detail::d64_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal_fast64_t v; + const auto r {from_chars(first, str + len, v)}; + if (r) + { + *this = v; + } + else + { + *this = direct_init_d64(detail::d64_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal_fast64_t::decimal_fast64_t(const char* str) : decimal_fast64_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal_fast64_t::decimal_fast64_t(const std::string& str) : decimal_fast64_t(str.c_str(), str.size()) {} +#else +constexpr decimal_fast64_t::decimal_fast64_t(std::string_view str) : decimal_fast64_t(str.c_str(), str.size()) {} +#endif + constexpr auto signbit(const decimal_fast64_t val) noexcept -> bool { return val.sign_; diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index 8ac5b56c8..4ec173d54 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -86,5 +86,9 @@ int main() test_invalid(); test_nonfinite(); + test_trivial(); + test_invalid(); + test_nonfinite(); + return boost::report_errors(); } From 165c251baa1cc0d7700633e0b77596a99811858d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 13:39:05 +0200 Subject: [PATCH 355/967] Add and test decimal_fast128_t string construction --- fuzzing/fuzz_string_constructors.cpp | 1 + include/boost/decimal/decimal_fast128_t.hpp | 47 +++++++++++++++++++++ include/boost/decimal/decimal_fast64_t.hpp | 2 +- test/test_string_construction.cpp | 4 ++ 4 files changed, 53 insertions(+), 1 deletion(-) diff --git a/fuzzing/fuzz_string_constructors.cpp b/fuzzing/fuzz_string_constructors.cpp index 4288bc962..5cfd94177 100644 --- a/fuzzing/fuzz_string_constructors.cpp +++ b/fuzzing/fuzz_string_constructors.cpp @@ -20,6 +20,7 @@ extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t* data, std::size_t size const boost::decimal::decimal_fast32_t df32_val {c_data_str}; const boost::decimal::decimal_fast64_t df64_val {c_data_str}; + const boost::decimal::decimal_fast128_t df128_val {c_data_str}; static_cast(d32_val); static_cast(d64_val); diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index c84b575b8..9e9f6bba7 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -152,6 +152,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + constexpr decimal_fast128_t(const char* str, std::size_t len); + public: constexpr decimal_fast128_t() noexcept = default; @@ -204,6 +206,14 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto direct_init_d128(significand_type significand, exponent_type exponent, bool sign) noexcept -> decimal_fast128_t; + constexpr decimal_fast128_t(const char* str); + + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW + explicit inline decimal_fast128_t(const std::string& str); + #else + explicit constexpr decimal_fast128_t(std::string_view str); + #endif + // Classification functions friend constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool; friend constexpr auto isinf(const decimal_fast128_t& val) noexcept -> bool; @@ -515,6 +525,43 @@ constexpr auto direct_init_d128(const decimal_fast128_t::significand_type signif return val; } +constexpr decimal_fast128_t::decimal_fast128_t(const char* str, const std::size_t len) +{ + if (str == nullptr || len == 0) + { + *this = direct_init_d128(detail::d128_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal_fast128_t v; + const auto r {from_chars(first, str + len, v)}; + if (r) + { + *this = v; + } + else + { + *this = direct_init_d128(detail::d128_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal_fast128_t::decimal_fast128_t(const char* str) : decimal_fast128_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal_fast128_t::decimal_fast128_t(const std::string& str) : decimal_fast128_t(str.c_str(), str.size()) {} +#else +constexpr decimal_fast128_t::decimal_fast128_t(std::string_view str) : decimal_fast128_t(str.data(), str.size()) {} +#endif + constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool { return val.sign_; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 92c1c612b..e1c85d5af 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -523,7 +523,7 @@ constexpr auto direct_init_d64(const decimal_fast64_t::significand_type signific return val; } -constexpr decimal_fast64_t::decimal_fast64_t(const char* str, std::size_t len) +constexpr decimal_fast64_t::decimal_fast64_t(const char* str, const std::size_t len) { if (str == nullptr || len == 0) { diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index 4ec173d54..777a7736b 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -90,5 +90,9 @@ int main() test_invalid(); test_nonfinite(); + test_trivial(); + test_invalid(); + test_nonfinite(); + return boost::report_errors(); } From d16d87764e7c275519256d5acb991aafe935f998 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 13:42:58 +0200 Subject: [PATCH 356/967] Test negative value still correctly parsed --- test/test_string_construction.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index 777a7736b..e28084c9e 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -23,6 +23,11 @@ void test_trivial() const T int2_val {12, 2}; BOOST_TEST_EQ(str2_val, int2_val); BOOST_TEST_EQ(T{std::string(str2)}, int2_val); + + const auto str3 = "-1.2E003"; + const T str3_val {str3}; + BOOST_TEST_EQ(str3_val, -str2_val); + BOOST_TEST_EQ(T{std::string(str3)}, str3_val); } #ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS From 4fcd8df63c4747b99865bcc30f54c45a8eab3734 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 13:51:38 +0200 Subject: [PATCH 357/967] Fix typo --- include/boost/decimal/decimal_fast128_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 9e9f6bba7..52c32c839 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1513,6 +1513,6 @@ struct numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal_fast128_t { return min(); } }; -} // namspace std +} // namespace std #endif //BOOST_DECIMAL_decimal_fast128_t_HPP From 6f512534872aebe786006583b774eab5092d20f6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 14:30:01 +0200 Subject: [PATCH 358/967] Fix missing decls and add additional header compile test --- include/boost/decimal/bid_conversion.hpp | 1 + include/boost/decimal/cfloat.hpp | 1 + include/boost/decimal/charconv.hpp | 6 ++ include/boost/decimal/cmath.hpp | 4 ++ include/boost/decimal/cstdlib.hpp | 1 + include/boost/decimal/decimal128_t.hpp | 3 +- include/boost/decimal/decimal32_t.hpp | 2 + include/boost/decimal/decimal64_t.hpp | 2 + include/boost/decimal/decimal_fast128_t.hpp | 67 ++++++++++++++----- include/boost/decimal/decimal_fast32_t.hpp | 51 ++++++++++++-- include/boost/decimal/decimal_fast64_t.hpp | 50 ++++++++++++-- include/boost/decimal/detail/from_string.hpp | 2 + test/Jamfile | 1 + .../charconv_before_types_compile.cpp | 16 +++++ 14 files changed, 176 insertions(+), 31 deletions(-) create mode 100644 test/compile_tests/charconv_before_types_compile.cpp diff --git a/include/boost/decimal/bid_conversion.hpp b/include/boost/decimal/bid_conversion.hpp index 18bcd90c4..321f9d39e 100644 --- a/include/boost/decimal/bid_conversion.hpp +++ b/include/boost/decimal/bid_conversion.hpp @@ -11,6 +11,7 @@ #include #include #include +#include #include #include "detail/int128.hpp" diff --git a/include/boost/decimal/cfloat.hpp b/include/boost/decimal/cfloat.hpp index a51e93703..865ad5209 100644 --- a/include/boost/decimal/cfloat.hpp +++ b/include/boost/decimal/cfloat.hpp @@ -8,6 +8,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 51d17fec1..0a6bd60d2 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -5,6 +5,12 @@ #ifndef BOOST_DECIMAL_CHARCONV_HPP #define BOOST_DECIMAL_CHARCONV_HPP +#include +#include +#include +#include +#include +#include #include #include #include diff --git a/include/boost/decimal/cmath.hpp b/include/boost/decimal/cmath.hpp index 9c86c7058..cd96e87c7 100644 --- a/include/boost/decimal/cmath.hpp +++ b/include/boost/decimal/cmath.hpp @@ -8,6 +8,10 @@ #include #include #include +#include +#include +#include +#include #include #include #include diff --git a/include/boost/decimal/cstdlib.hpp b/include/boost/decimal/cstdlib.hpp index a74770c7e..81cbefbc5 100644 --- a/include/boost/decimal/cstdlib.hpp +++ b/include/boost/decimal/cstdlib.hpp @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index a8208e576..a83ac67c7 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -36,7 +36,6 @@ #include #include #include -#include "detail/int128.hpp" #include #include #include @@ -2176,4 +2175,6 @@ struct numeric_limits } //namespace std +#include + #endif //BOOST_DECIMAL_decimal128_t_HPP diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 2ff8a15bb..7efeb3e82 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -2240,4 +2240,6 @@ struct numeric_limits } // Namespace std +#include + #endif // BOOST_DECIMAL_decimal32_t_HPP diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 9259af54e..82fa3a180 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -2123,4 +2123,6 @@ struct numeric_limits } // Namespace std +#include + #endif //BOOST_DECIMAL_decimal64_t_HPP diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 52c32c839..96a9d7879 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -5,17 +5,41 @@ #ifndef BOOST_DECIMAL_decimal_fast128_t_HPP #define BOOST_DECIMAL_decimal_fast128_t_HPP -#include +#include +#include #include -#include +#include +#include +#include "detail/int128.hpp" +#include #include -#include -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include #include #include #include -#include #include +#include +#include +#include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -37,6 +61,15 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_inf_high_bits = UINT64_MA BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_qnan_high_bits = UINT64_MAX - 1; BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits = UINT64_MAX; +template +constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + } // namespace detail #ifdef _MSC_VER @@ -76,7 +109,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final constexpr auto biased_exponent() const noexcept -> biased_exponent_type { - return static_cast(exponent_) - detail::bias_v; + return static_cast(exponent_) - detail::bias_v; } constexpr auto to_components() const noexcept -> detail::decimal_fast128_t_components @@ -404,7 +437,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto copysignd128f(decimal_fast128_t mag, decimal_fast128_t sgn) noexcept -> decimal_fast128_t; friend constexpr auto scalblnd128f(decimal_fast128_t num, long exp) noexcept -> decimal_fast128_t; friend constexpr auto scalbnd128f(decimal_fast128_t num, int exp) noexcept -> decimal_fast128_t; - friend constexpr auto fmad128f(decimal_fast128_t x, decimal_fast128_t y, decimal128_t z) noexcept -> decimal128_t; + friend constexpr auto fmad128f(decimal_fast128_t x, decimal_fast128_t y, decimal_fast128_t z) noexcept -> decimal_fast128_t; // Decimal functions // 3.6.4 Same Quantum @@ -440,9 +473,9 @@ constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, bool sign) noex significand_ = static_cast(min_coeff); - const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias_v}; + const auto biased_exp {significand_ == 0U ? 0 : exp + detail::bias_v}; - if (biased_exp > detail::max_biased_exp_v) + if (biased_exp > detail::max_biased_exp_v) { significand_ = detail::d128_fast_inf; } @@ -454,7 +487,7 @@ constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, bool sign) noex { // Flush denorms to zero significand_ = static_cast(0); - exponent_ = static_cast(detail::bias_v); + exponent_ = static_cast(detail::bias_v); sign_ = false; } } @@ -600,7 +633,7 @@ constexpr auto issignaling(const decimal_fast128_t& val) noexcept -> bool constexpr auto isnormal(const decimal_fast128_t& val) noexcept -> bool { #ifndef BOOST_DECIMAL_FAST_MATH - if (val.exponent_ <= static_cast(detail::precision_v - 1)) + if (val.exponent_ <= static_cast(detail::precision_v - 1)) { return false; } @@ -899,7 +932,7 @@ constexpr auto operator+(const decimal_fast128_t& lhs, const Integer rhs) noexce bool abs_lhs_bigger {abs(lhs) > sig_rhs}; exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); + detail::normalize(sig_rhs, exp_rhs); return detail::d128_add_impl(lhs.significand_, lhs.biased_exponent(), lhs.sign_, sig_rhs, exp_rhs, (rhs < 0), @@ -945,7 +978,7 @@ constexpr auto operator-(const decimal_fast128_t& lhs, const Integer rhs) noexce const bool abs_lhs_bigger {abs(lhs) > sig_rhs}; exp_type exp_rhs {0}; - detail::normalize(sig_rhs, exp_rhs); + detail::normalize(sig_rhs, exp_rhs); return detail::d128_add_impl( lhs.significand_, lhs.biased_exponent(), lhs.sign_, @@ -970,7 +1003,7 @@ constexpr auto operator-(const Integer lhs, const decimal_fast128_t& rhs) noexce const bool abs_lhs_bigger {sig_lhs > abs(rhs)}; exp_type exp_lhs {0}; - detail::normalize(sig_lhs, exp_lhs); + detail::normalize(sig_lhs, exp_lhs); return detail::d128_add_impl( sig_lhs, exp_lhs, (lhs < 0), @@ -1079,11 +1112,11 @@ constexpr auto d128f_div_impl(const decimal_fast128_t& lhs, const decimal_fast12 << "\nexp rhs: " << exp_rhs << std::endl; #endif - constexpr auto ten_pow_precision {detail::pow10(int128::uint128_t(detail::precision_v))}; + constexpr auto ten_pow_precision {detail::pow10(int128::uint128_t(detail::precision_v))}; const auto big_sig_lhs {detail::umul256(lhs.significand_, ten_pow_precision)}; const auto res_sig {big_sig_lhs / rhs.significand_}; - const auto res_exp {lhs.biased_exponent() - rhs.biased_exponent() - detail::precision_v}; + const auto res_exp {lhs.biased_exponent() - rhs.biased_exponent() - detail::precision_v}; q = decimal_fast128_t(static_cast(res_sig), res_exp, sign); } @@ -1515,4 +1548,6 @@ struct numeric_limits } // namespace std +#include + #endif //BOOST_DECIMAL_decimal_fast128_t_HPP diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 6c62081ea..12e6b9502 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -5,19 +5,42 @@ #ifndef BOOST_DECIMAL_decimal_fast32_t_HPP #define BOOST_DECIMAL_decimal_fast32_t_HPP -#include +#include +#include #include -#include +#include +#include +#include "detail/int128.hpp" +#include #include -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include #include #include #include #include -#include -#include -#include +#include #include +#include +#include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -33,7 +56,19 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_inf = std::numeric_limits< BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_qnan = std::numeric_limits::max() - 2; BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_snan = std::numeric_limits::max() - 1; -} +template +constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +template +constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; + +} // namespace detail BOOST_DECIMAL_EXPORT class decimal_fast32_t final { @@ -1507,4 +1542,6 @@ struct numeric_limits } // Namespace std +#include + #endif //BOOST_DECIMAL_decimal_fast32_t_HPP diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index e1c85d5af..e460cc151 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -5,20 +5,42 @@ #ifndef BOOST_DECIMAL_decimal_fast64_t_HPP #define BOOST_DECIMAL_decimal_fast64_t_HPP -#include +#include +#include #include -#include +#include +#include +#include "detail/int128.hpp" +#include #include -#include -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include #include #include #include #include -#include -#include -#include #include +#include +#include +#include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -36,6 +58,18 @@ BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_inf = std::numeric_limits< BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_qnan = std::numeric_limits::max() - 2; BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_snan = std::numeric_limits::max() - 1; +template +constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; + +template +constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + +template +constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; + } // namespace detail BOOST_DECIMAL_EXPORT class decimal_fast64_t final @@ -1467,4 +1501,6 @@ struct numeric_limits } // namespace std +#include + #endif //BOOST_DECIMAL_decimal_fast64_t_HPP diff --git a/include/boost/decimal/detail/from_string.hpp b/include/boost/decimal/detail/from_string.hpp index 891d53eef..415e91cb8 100644 --- a/include/boost/decimal/detail/from_string.hpp +++ b/include/boost/decimal/detail/from_string.hpp @@ -7,6 +7,8 @@ #include #include +#include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include diff --git a/test/Jamfile b/test/Jamfile index a9f7ed947..424cdd8cb 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -202,6 +202,7 @@ compile compile_tests/bid_conversion.cpp ; compile compile_tests/dpd_conversion.cpp ; compile compile_tests/cfloat.cpp ; compile compile_tests/charconv_compile.cpp ; +compile compile_tests/charconv_before_types_compile.cpp ; compile compile_tests/cmath_compile.cpp ; compile compile_tests/cstdio_compile.cpp ; compile compile_tests/cstdlib_compile.cpp ; diff --git a/test/compile_tests/charconv_before_types_compile.cpp b/test/compile_tests/charconv_before_types_compile.cpp new file mode 100644 index 000000000..e4295b003 --- /dev/null +++ b/test/compile_tests/charconv_before_types_compile.cpp @@ -0,0 +1,16 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include +#include +#include +#include +#include +#include + +int main() +{ + return 0; +} From 2f42158d47e491149b6ecee4cfb5801a300feddd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 14:36:04 +0200 Subject: [PATCH 359/967] Fix data member --- include/boost/decimal/decimal_fast64_t.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index e460cc151..f231608fd 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -591,7 +591,7 @@ constexpr decimal_fast64_t::decimal_fast64_t(const char* str) : decimal_fast64_t #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW inline decimal_fast64_t::decimal_fast64_t(const std::string& str) : decimal_fast64_t(str.c_str(), str.size()) {} #else -constexpr decimal_fast64_t::decimal_fast64_t(std::string_view str) : decimal_fast64_t(str.c_str(), str.size()) {} +constexpr decimal_fast64_t::decimal_fast64_t(std::string_view str) : decimal_fast64_t(str.data(), str.size()) {} #endif constexpr auto signbit(const decimal_fast64_t val) noexcept -> bool From 896401fe69219a45b76a754cf5e617f74477565c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 14:46:54 +0200 Subject: [PATCH 360/967] Disable string constructor when strings are not avilable --- include/boost/decimal/decimal128_t.hpp | 10 ++++++++++ include/boost/decimal/decimal32_t.hpp | 10 ++++++++++ include/boost/decimal/decimal64_t.hpp | 9 +++++++++ include/boost/decimal/decimal_fast128_t.hpp | 10 ++++++++++ include/boost/decimal/decimal_fast32_t.hpp | 10 ++++++++++ include/boost/decimal/decimal_fast64_t.hpp | 10 ++++++++++ 6 files changed, 59 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index a83ac67c7..7aeb9ce81 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -205,7 +205,9 @@ BOOST_DECIMAL_EXPORT class decimal128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal128_t(const char* str, std::size_t len); + #endif public: // 3.2.4.1 construct/copy/destroy @@ -278,6 +280,8 @@ BOOST_DECIMAL_EXPORT class decimal128_t final explicit constexpr decimal128_t(bool value) noexcept; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) + explicit constexpr decimal128_t(const char* str); #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW @@ -286,6 +290,8 @@ BOOST_DECIMAL_EXPORT class decimal128_t final explicit constexpr decimal128_t(std::string_view str); #endif + #endif + // 3.2.4.4 Conversion to integral type explicit constexpr operator bool() const noexcept; explicit constexpr operator int() const noexcept; @@ -901,6 +907,8 @@ constexpr decimal128_t::decimal128_t(const Decimal val) noexcept *this = to_decimal(val); } +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + constexpr decimal128_t::decimal128_t(const char* str, std::size_t len) { if (str == nullptr || len == 0) @@ -938,6 +946,8 @@ inline decimal128_t::decimal128_t(const std::string& str) : decimal128_t(str.c_s constexpr decimal128_t::decimal128_t(std::string_view str) : decimal128_t(str.data(), str.size()) {} #endif +#endif // BOOST_DECIMAL_DISABLE_CLIB + constexpr decimal128_t::operator bool() const noexcept { constexpr decimal128_t zero {0, 0}; diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 7efeb3e82..c672c4aa0 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -215,7 +215,9 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal32_t(const char* str, std::size_t len); + #endif public: // 3.2.2.1 construct/copy/destroy: @@ -306,12 +308,16 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special explicit constexpr decimal32_t(const char* str); + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW explicit inline decimal32_t(const std::string& str); #else explicit constexpr decimal32_t(std::string_view str); #endif + #endif + constexpr decimal32_t(const decimal32_t& val) noexcept = default; constexpr decimal32_t(decimal32_t&& val) noexcept = default; constexpr auto operator=(const decimal32_t& val) noexcept -> decimal32_t& = default; @@ -738,6 +744,8 @@ constexpr decimal32_t::decimal32_t(const T1 coeff, const T2 exp) noexcept : deci constexpr decimal32_t::decimal32_t(const bool value) noexcept : decimal32_t(static_cast(value), 0, false) {} +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + constexpr decimal32_t::decimal32_t(const char* str, const std::size_t len) { if (str == nullptr || len == 0) @@ -775,6 +783,8 @@ inline decimal32_t::decimal32_t(const std::string& str) : decimal32_t(str.c_str( constexpr decimal32_t::decimal32_t(std::string_view str) : decimal32_t(str.data(), str.size()) {} #endif +#endif // BOOST_DECIMAL_DISABLE_CLIB + constexpr auto from_bits(const std::uint32_t bits) noexcept -> decimal32_t { decimal32_t result; diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 82fa3a180..52832b3f3 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -223,7 +223,9 @@ BOOST_DECIMAL_EXPORT class decimal64_t final template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal64_t(const char* str, std::size_t len); + #endif public: // 3.2.3.1 construct/copy/destroy @@ -341,6 +343,8 @@ BOOST_DECIMAL_EXPORT class decimal64_t final explicit constexpr decimal64_t(bool value) noexcept; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) + explicit constexpr decimal64_t(const char* str); #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW @@ -349,6 +353,8 @@ BOOST_DECIMAL_EXPORT class decimal64_t final explicit constexpr decimal64_t(std::string_view str); #endif + #endif + // cmath functions that are easier as friends friend constexpr auto signbit BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; friend constexpr auto isnan BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (decimal64_t rhs) noexcept -> bool; @@ -814,6 +820,7 @@ constexpr auto decimal64_t::operator=(const Integer& val) noexcept return *this; } +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal64_t::decimal64_t(const char* str, std::size_t len) { if (str == nullptr || len == 0) @@ -851,6 +858,8 @@ inline decimal64_t::decimal64_t(const std::string& str) : decimal64_t(str.c_str( constexpr decimal64_t::decimal64_t(std::string_view str) : decimal64_t(str.data(), str.size()) {} #endif +#endif // BOOST_DECIMAL_DISABLE_CLIB + constexpr decimal64_t::operator bool() const noexcept { constexpr decimal64_t zero {0, 0}; diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 96a9d7879..7ad677e11 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -185,7 +185,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast128_t(const char* str, std::size_t len); + #endif public: constexpr decimal_fast128_t() noexcept = default; @@ -239,6 +241,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto direct_init_d128(significand_type significand, exponent_type exponent, bool sign) noexcept -> decimal_fast128_t; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) + constexpr decimal_fast128_t(const char* str); #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW @@ -247,6 +251,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final explicit constexpr decimal_fast128_t(std::string_view str); #endif + #endif // BOOST_DECIMAL_DISABLE_CLIB + // Classification functions friend constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool; friend constexpr auto isinf(const decimal_fast128_t& val) noexcept -> bool; @@ -558,6 +564,8 @@ constexpr auto direct_init_d128(const decimal_fast128_t::significand_type signif return val; } +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + constexpr decimal_fast128_t::decimal_fast128_t(const char* str, const std::size_t len) { if (str == nullptr || len == 0) @@ -595,6 +603,8 @@ inline decimal_fast128_t::decimal_fast128_t(const std::string& str) : decimal_fa constexpr decimal_fast128_t::decimal_fast128_t(std::string_view str) : decimal_fast128_t(str.data(), str.size()) {} #endif +#endif // BOOST_DECIMAL_DISABLE_CLIB + constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool { return val.sign_; diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 12e6b9502..4356acb83 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -185,7 +185,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template friend constexpr auto detail::generic_div_impl(const T& lhs, const T& rhs) noexcept -> DecimalType; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast32_t(const char* str, std::size_t len); + #endif public: constexpr decimal_fast32_t() noexcept = default; @@ -217,6 +219,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final explicit constexpr decimal_fast32_t(long double val) noexcept = delete; #endif + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) + explicit constexpr decimal_fast32_t(const char* str); #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW @@ -225,6 +229,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final explicit constexpr decimal_fast32_t(std::string_view str); #endif + #endif // BOOST_DECIMAL_DISABLE_CLIB + constexpr decimal_fast32_t(const decimal_fast32_t& val) noexcept = default; constexpr decimal_fast32_t(decimal_fast32_t&& val) noexcept = default; constexpr auto operator=(const decimal_fast32_t& val) noexcept -> decimal_fast32_t& = default; @@ -550,6 +556,8 @@ constexpr auto direct_init(const detail::decimal_fast32_t_components& x) noexcep return val; } +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + constexpr decimal_fast32_t::decimal_fast32_t(const char* str, const std::size_t len) { if (str == nullptr || len == 0) @@ -587,6 +595,8 @@ inline decimal_fast32_t::decimal_fast32_t(const std::string& str) : decimal_fast constexpr decimal_fast32_t::decimal_fast32_t(std::string_view str) : decimal_fast32_t(str.data(), str.size()) {} #endif +#endif // BOOST_DECIMAL_DISABLE_CLIB + constexpr auto signbit(const decimal_fast32_t val) noexcept -> bool { return val.sign_; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index f231608fd..0b8497773 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -192,7 +192,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast64_t(const char* str, std::size_t len); + #endif public: constexpr decimal_fast64_t() noexcept = default; @@ -246,6 +248,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto direct_init_d64(decimal_fast64_t::significand_type significand, decimal_fast64_t::exponent_type exponent, bool sign) noexcept -> decimal_fast64_t; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) + explicit constexpr decimal_fast64_t(const char* str); #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW @@ -254,6 +258,8 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final explicit constexpr decimal_fast64_t(std::string_view str); #endif + #endif // BOOST_DECIMAL_DISABLE_CLIB + // Classification functions friend constexpr auto signbit(decimal_fast64_t val) noexcept -> bool; friend constexpr auto isinf(decimal_fast64_t val) noexcept -> bool; @@ -557,6 +563,8 @@ constexpr auto direct_init_d64(const decimal_fast64_t::significand_type signific return val; } +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + constexpr decimal_fast64_t::decimal_fast64_t(const char* str, const std::size_t len) { if (str == nullptr || len == 0) @@ -594,6 +602,8 @@ inline decimal_fast64_t::decimal_fast64_t(const std::string& str) : decimal_fast constexpr decimal_fast64_t::decimal_fast64_t(std::string_view str) : decimal_fast64_t(str.data(), str.size()) {} #endif +#endif // BOOST_DECIMAL_DISABLE_CLIB + constexpr auto signbit(const decimal_fast64_t val) noexcept -> bool { return val.sign_; From cdac1a7b810ddf63c4a3adeff4b76d17d85ff7cb Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 15:15:13 +0200 Subject: [PATCH 361/967] Add small starter blurb to the docs --- doc/modules/ROOT/pages/decimal128_t.adoc | 9 +++++++++ doc/modules/ROOT/pages/decimal_fast128_t.adoc | 9 +++++++++ doc/modules/ROOT/pages/decimal_fast32_t.adoc | 9 +++++++++ doc/modules/ROOT/pages/decimal_fast64_t.adoc | 9 +++++++++ 4 files changed, 36 insertions(+) diff --git a/doc/modules/ROOT/pages/decimal128_t.adoc b/doc/modules/ROOT/pages/decimal128_t.adoc index 468bdbbef..cc19d7d47 100644 --- a/doc/modules/ROOT/pages/decimal128_t.adoc +++ b/doc/modules/ROOT/pages/decimal128_t.adoc @@ -54,6 +54,15 @@ explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal128_t(Float val) noexcept; template explicit constexpr decimal128_t(Integer val) noexcept; +// Extension: Construction from (c)string +explicit constexpr decimal128_t(const char* str); + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +explicit inline decimal128_t(const std::string& str); +#else +explicit constexpr decimal128_t(std::string_view str); +#endif + template constexpr decimal128_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; diff --git a/doc/modules/ROOT/pages/decimal_fast128_t.adoc b/doc/modules/ROOT/pages/decimal_fast128_t.adoc index 70f96c4d9..a79457748 100644 --- a/doc/modules/ROOT/pages/decimal_fast128_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast128_t.adoc @@ -56,6 +56,15 @@ explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast128_t(Float val) noexcept; template explicit constexpr decimal_fast128_t(Integer val) noexcept; +// Extension: Construction from (c)string +explicit constexpr decimal_fast128_t(const char* str); + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +explicit inline decimal_fast128_t(const std::string& str); +#else +explicit constexpr decimal_fast128_t(std::string_view str); +#endif + template constexpr decimal_fast128_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; diff --git a/doc/modules/ROOT/pages/decimal_fast32_t.adoc b/doc/modules/ROOT/pages/decimal_fast32_t.adoc index 25e647a05..de2e9bdf4 100644 --- a/doc/modules/ROOT/pages/decimal_fast32_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast32_t.adoc @@ -56,6 +56,15 @@ explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast32_t(Float val) noexcept; template explicit constexpr decimal_fast32_t(Integer val) noexcept; +// Extension: Construction from (c)string +explicit constexpr decimal_fast32_t(const char* str); + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +explicit inline decimal_fast32_t(const std::string& str); +#else +explicit constexpr decimal_fast32_t(std::string_view str); +#endif + template constexpr decimal_fast32_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; diff --git a/doc/modules/ROOT/pages/decimal_fast64_t.adoc b/doc/modules/ROOT/pages/decimal_fast64_t.adoc index ec18db93c..e8fd4a25a 100644 --- a/doc/modules/ROOT/pages/decimal_fast64_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast64_t.adoc @@ -56,6 +56,15 @@ explicit BOOST_DECIMAL_CXX20_CONSTEXPR decimal_fast64_t(Float val) noexcept; template explicit constexpr decimal_fast64_t(Integer val) noexcept; +// Extension: Construction from (c)string +explicit constexpr decimal_fast64_t(const char* str); + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +explicit inline decimal_fast64_t(const std::string& str); +#else +explicit constexpr decimal_fast64_t(std::string_view str); +#endif + template constexpr decimal_fast64_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; From 8c80594c1a02acac84adfbbeb86f1dfc119c23b5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 15:20:24 +0200 Subject: [PATCH 362/967] Disable header on embedded platforms --- include/boost/decimal/detail/from_string.hpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/boost/decimal/detail/from_string.hpp b/include/boost/decimal/detail/from_string.hpp index 415e91cb8..f461d5c4a 100644 --- a/include/boost/decimal/detail/from_string.hpp +++ b/include/boost/decimal/detail/from_string.hpp @@ -6,6 +6,9 @@ #define BOOST_DECIMAL_DETAIL_FROM_STRING_HPP #include + +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + #include #include #include @@ -41,4 +44,6 @@ constexpr auto construct_from_string(const char* str, const std::size_t len) -> } // namespace decimal } // namespace boost +#endif // BOOST_DECIMAL_DISABLE_CLIB + #endif // BOOST_DECIMAL_DETAIL_FROM_STRING_HPP From 21a9079f8eb4f268ae4b120c26cb8872106bec03 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 16:10:43 +0200 Subject: [PATCH 363/967] Ignore warning on old compilers --- include/boost/decimal/detail/from_string.hpp | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/boost/decimal/detail/from_string.hpp b/include/boost/decimal/detail/from_string.hpp index f461d5c4a..a12e58dc6 100644 --- a/include/boost/decimal/detail/from_string.hpp +++ b/include/boost/decimal/detail/from_string.hpp @@ -20,10 +20,19 @@ namespace boost { namespace decimal { +#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 14) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wundefined-inline" +#endif + // Forward decl needed for string constructor BOOST_DECIMAL_EXPORT template constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, chars_format fmt = chars_format::general) noexcept -> from_chars_result; +#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 14) +# pragma clang diagnostic pop +#endif + namespace detail { template From e4eaf0224912e825e49a8c3d988f5531b1c89804 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 18:22:44 +0200 Subject: [PATCH 364/967] Update ignore versions --- include/boost/decimal/detail/from_string.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/from_string.hpp b/include/boost/decimal/detail/from_string.hpp index a12e58dc6..4eba4091b 100644 --- a/include/boost/decimal/detail/from_string.hpp +++ b/include/boost/decimal/detail/from_string.hpp @@ -20,7 +20,7 @@ namespace boost { namespace decimal { -#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 14) +#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 15) # pragma clang diagnostic push # pragma clang diagnostic ignored "-Wundefined-inline" #endif @@ -29,7 +29,7 @@ namespace decimal { BOOST_DECIMAL_EXPORT template constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, chars_format fmt = chars_format::general) noexcept -> from_chars_result; -#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 14) +#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 15) # pragma clang diagnostic pop #endif From d1086c273e2127d7ae2e8306d3534177bdad9848 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 15 Oct 2025 16:26:28 +0200 Subject: [PATCH 365/967] Add first case to test set --- test/Jamfile | 1 + test/github_issue_1106.cpp | 2 +- test/github_issue_1107.cpp | 38 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 40 insertions(+), 1 deletion(-) create mode 100644 test/github_issue_1107.cpp diff --git a/test/Jamfile b/test/Jamfile index 424cdd8cb..918555fb8 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -72,6 +72,7 @@ run github_issue_1091.cpp ; run github_issue_1094.cpp ; run github_issue_1105.cpp ; run github_issue_1106.cpp ; +run github_issue_1107.cpp ; run github_issue_1110.cpp ; run github_issue_1112.cpp ; diff --git a/test/github_issue_1106.cpp b/test/github_issue_1106.cpp index e5bd3dc52..505169ad3 100644 --- a/test/github_issue_1106.cpp +++ b/test/github_issue_1106.cpp @@ -2,7 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt // -// See: https://github.com/cppalliance/decimal/issues/1094 +// See: https://github.com/cppalliance/decimal/issues/1106 #include #include diff --git a/test/github_issue_1107.cpp b/test/github_issue_1107.cpp new file mode 100644 index 000000000..4c1cb7e4e --- /dev/null +++ b/test/github_issue_1107.cpp @@ -0,0 +1,38 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1107 + +#include +#include +#include +#include + +using namespace boost::decimal; + +static std::mt19937_64 rng(42); +static std::uniform_int_distribution dist(1, 10); + +// 7.2.d +template +void test_add_sub() +{ + const T a {dist(rng) * std::numeric_limits::infinity()}; + const T b {-dist(rng) * std::numeric_limits::infinity()}; + + BOOST_TEST(isnan(b + a)); // -inf + inf + BOOST_TEST(isnan(b - b)); // -inf + inf +} + +int main() +{ + test_add_sub(); + test_add_sub(); + test_add_sub(); + test_add_sub(); + test_add_sub(); + test_add_sub(); + + return boost::report_errors(); +} From a765f2b49830368e3dd4060b4f4673853a4b8d5c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 08:44:28 +0200 Subject: [PATCH 366/967] Handle 7.2.d --- include/boost/decimal/decimal128_t.hpp | 10 +++++++++ include/boost/decimal/decimal32_t.hpp | 12 +++++++++++ include/boost/decimal/decimal64_t.hpp | 10 +++++++++ include/boost/decimal/decimal_fast128_t.hpp | 10 +++++++++ include/boost/decimal/decimal_fast32_t.hpp | 10 +++++++++ include/boost/decimal/decimal_fast64_t.hpp | 10 +++++++++ test/github_issue_1107.cpp | 23 ++++++++++++++++++++- 7 files changed, 84 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 7aeb9ce81..8a2080b53 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -1509,6 +1509,11 @@ constexpr auto operator+(const decimal128_t& lhs, const decimal128_t& rhs) noexc #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) != signbit(rhs)) + { + return from_bits(detail::d128_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif @@ -1567,6 +1572,11 @@ constexpr auto operator-(const decimal128_t& lhs, const decimal128_t& rhs) noexc #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) == signbit(rhs)) + { + return from_bits(detail::d128_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index c672c4aa0..c5bf5ce63 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -875,6 +875,12 @@ constexpr auto operator+(const decimal32_t lhs, const decimal32_t rhs) noexcept #ifndef BOOST_DECIMAL_FAST_MATH if (!isfinite(lhs) || !isfinite(rhs)) { + // Case from 7.2.d + if (isinf(lhs) && isinf(rhs) && signbit(lhs) != signbit(rhs)) + { + return from_bits(detail::d32_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif @@ -968,6 +974,12 @@ constexpr auto operator-(const decimal32_t lhs, const decimal32_t rhs) noexcept #ifndef BOOST_DECIMAL_FAST_MATH if (!isfinite(lhs) || !isfinite(rhs)) { + // Case from 7.2.d + if (isinf(lhs) && isinf(rhs) && signbit(lhs) == signbit(rhs)) + { + return from_bits(detail::d32_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 52832b3f3..21934830a 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1215,6 +1215,11 @@ constexpr auto operator+(const decimal64_t lhs, const decimal64_t rhs) noexcept #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) != signbit(rhs)) + { + return from_bits(detail::d64_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif @@ -1269,6 +1274,11 @@ constexpr auto operator-(const decimal64_t lhs, const decimal64_t rhs) noexcept #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) == signbit(rhs)) + { + return from_bits(detail::d64_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 7ad677e11..2e5ef15eb 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -915,6 +915,11 @@ constexpr auto operator+(const decimal_fast128_t& lhs, const decimal_fast128_t& #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) != signbit(rhs)) + { + return direct_init_d128(detail::d128_fast_qnan, 0, false); + } + return detail::check_non_finite(lhs, rhs); } #endif @@ -961,6 +966,11 @@ constexpr auto operator-(const decimal_fast128_t& lhs, const decimal_fast128_t& #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) == signbit(rhs)) + { + return direct_init_d128(detail::d128_fast_qnan, 0, false); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 4356acb83..971acd4b8 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -885,6 +885,11 @@ constexpr auto operator+(const decimal_fast32_t lhs, const decimal_fast32_t rhs) #ifndef BOOST_DECIMAL_FAST_MATH if (!isfinite(lhs) || !isfinite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) != signbit(rhs)) + { + return direct_init(detail::d32_fast_qnan, UINT8_C((0))); + } + return detail::check_non_finite(lhs, rhs); } #endif @@ -930,6 +935,11 @@ constexpr auto operator-(const decimal_fast32_t lhs, decimal_fast32_t rhs) noexc #ifndef BOOST_DECIMAL_FAST_MATH if (!isfinite(lhs) || !isfinite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) == signbit(rhs)) + { + return direct_init(detail::d32_fast_qnan, UINT8_C((0))); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 0b8497773..09d5f27e4 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1008,6 +1008,11 @@ constexpr auto operator+(const decimal_fast64_t lhs, const decimal_fast64_t rhs) #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) != signbit(rhs)) + { + return direct_init_d64(detail::d64_fast_qnan, 0, false); + } + return detail::check_non_finite(lhs, rhs); } #endif @@ -1053,6 +1058,11 @@ constexpr auto operator-(const decimal_fast64_t lhs, decimal_fast64_t rhs) noexc #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if (isinf(lhs) && isinf(rhs) && signbit(lhs) == signbit(rhs)) + { + return direct_init_d64(detail::d64_fast_qnan, 0, false); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/test/github_issue_1107.cpp b/test/github_issue_1107.cpp index 4c1cb7e4e..6b4b46b01 100644 --- a/test/github_issue_1107.cpp +++ b/test/github_issue_1107.cpp @@ -19,10 +19,24 @@ template void test_add_sub() { const T a {dist(rng) * std::numeric_limits::infinity()}; - const T b {-dist(rng) * std::numeric_limits::infinity()}; + const T b {dist(rng) * -std::numeric_limits::infinity()}; + + BOOST_TEST(!signbit(a)); + BOOST_TEST(signbit(b)); BOOST_TEST(isnan(b + a)); // -inf + inf + BOOST_TEST(isnan(a + b)); // inf - inf BOOST_TEST(isnan(b - b)); // -inf + inf + BOOST_TEST(isnan(a - a)); // inf - inf +} + +// 7.2.g +template +void test_sqrt() +{ + const T val {-dist(rng)}; + const auto sqrt_val {sqrt(val)}; + BOOST_TEST(isnan(sqrt_val)); } int main() @@ -34,5 +48,12 @@ int main() test_add_sub(); test_add_sub(); + test_sqrt(); + test_sqrt(); + test_sqrt(); + test_sqrt(); + test_sqrt(); + test_sqrt(); + return boost::report_errors(); } From 2653ea3eaeac52467dd19561ffabe24a2ae84234 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 08:46:30 +0200 Subject: [PATCH 367/967] Add 7.2.b test case --- test/github_issue_1107.cpp | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/test/github_issue_1107.cpp b/test/github_issue_1107.cpp index 6b4b46b01..f6f957f9f 100644 --- a/test/github_issue_1107.cpp +++ b/test/github_issue_1107.cpp @@ -14,6 +14,17 @@ using namespace boost::decimal; static std::mt19937_64 rng(42); static std::uniform_int_distribution dist(1, 10); +// 7.2.b +template +void test_mul() +{ + const T a {dist(rng) * 0}; + const T b {dist(rng) * std::numeric_limits::infinity()}; + + BOOST_TEST(isnan(a * b)); + BOOST_TEST(isnan(b * a)); +} + // 7.2.d template void test_add_sub() @@ -48,6 +59,13 @@ int main() test_add_sub(); test_add_sub(); + test_mul(); + test_mul(); + test_mul(); + test_mul(); + test_mul(); + test_mul(); + test_sqrt(); test_sqrt(); test_sqrt(); From 77aaa67efd57b2af41f88fcecc86f4fe800aa75a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 09:44:34 +0200 Subject: [PATCH 368/967] Fix handling of comparisons to zero --- include/boost/decimal/detail/comparison.hpp | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/detail/comparison.hpp b/include/boost/decimal/detail/comparison.hpp index 196f24646..4f5aa4d0d 100644 --- a/include/boost/decimal/detail/comparison.hpp +++ b/include/boost/decimal/detail/comparison.hpp @@ -182,6 +182,12 @@ constexpr auto equal_parts_impl(T1 lhs_sig, U1 lhs_exp, bool lhs_sign, BOOST_DECIMAL_ASSERT(lhs_sig >= 0U); BOOST_DECIMAL_ASSERT(rhs_sig >= 0U); + if (lhs_sig == 0U && rhs_sig == 0U) + { + // +0 == -0 + return true; + } + // We con compare signs right away if (lhs_sign != rhs_sign) { @@ -192,10 +198,6 @@ constexpr auto equal_parts_impl(T1 lhs_sig, U1 lhs_exp, bool lhs_sign, // Check the value of delta exp to avoid to large a value for pow10 // Also if only one of the significands is 0 then we know the values have to be mismatched - if (lhs_sig == 0U && rhs_sig == 0U) - { - return true; - } if (delta_exp > detail::precision_v || delta_exp < -detail::precision_v) { return false; @@ -270,14 +272,20 @@ constexpr auto equal_parts_impl(T1 lhs_sig, U1 lhs_exp, bool lhs_sign, template -constexpr auto equal_parts_impl(T1 lhs_sig, U1 lhs_exp, bool lhs_sign, - T2 rhs_sig, U2 rhs_exp, bool rhs_sign) noexcept -> std::enable_if_t, bool> +constexpr auto equal_parts_impl(T1 lhs_sig, U1 lhs_exp, const bool lhs_sign, + T2 rhs_sig, U2 rhs_exp, const bool rhs_sign) noexcept -> std::enable_if_t, bool> { using comp_type = std::conditional_t<(std::numeric_limits::digits10 > std::numeric_limits::digits10), T1, T2>; BOOST_DECIMAL_ASSERT(lhs_sig >= 0U); BOOST_DECIMAL_ASSERT(rhs_sig >= 0U); + if (lhs_sig == 0U && rhs_sig == 0U) + { + // +0 == -0 + return true; + } + auto new_lhs_sig {static_cast(lhs_sig)}; auto new_rhs_sig {static_cast(rhs_sig)}; From 2a667054bcf9678cb2056c57abd635672e7d2c8f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 09:58:13 +0200 Subject: [PATCH 369/967] Implement support for 7.2.b --- include/boost/decimal/decimal128_t.hpp | 16 +++++++++------- include/boost/decimal/decimal32_t.hpp | 5 +++++ include/boost/decimal/decimal64_t.hpp | 13 ++++++++----- include/boost/decimal/decimal_fast128_t.hpp | 5 +++++ include/boost/decimal/decimal_fast32_t.hpp | 5 +++++ include/boost/decimal/decimal_fast64_t.hpp | 5 +++++ test/github_issue_1107.cpp | 5 ++++- 7 files changed, 41 insertions(+), 13 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 8a2080b53..3565b6025 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -1658,19 +1658,21 @@ constexpr auto operator*(const decimal128_t& lhs, const decimal128_t& rhs) noexc #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if ((isinf(lhs) && rhs == 0) || (isinf(rhs) && lhs == 0)) + { + return from_bits(detail::d128_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif - const auto lhs_sig {lhs.full_significand()}; - const auto lhs_exp {lhs.biased_exponent()}; - - const auto rhs_sig {rhs.full_significand()}; - const auto rhs_exp {rhs.biased_exponent()}; + const auto lhs_components {lhs.to_components()}; + const auto rhs_components {rhs.to_components()}; return detail::d128_mul_impl( - lhs_sig, lhs_exp, lhs.isneg(), - rhs_sig, rhs_exp, rhs.isneg()); + lhs_components.sig, lhs_components.exp, lhs_components.sign, + rhs_components.sig, rhs_components.exp, rhs_components.sign); } template diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index c5bf5ce63..9cee1e4cc 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -1657,6 +1657,11 @@ constexpr auto operator*(const decimal32_t lhs, const decimal32_t rhs) noexcept #ifndef BOOST_DECIMAL_FAST_MATH if (!isfinite(lhs) || !isfinite(rhs)) { + if ((isinf(lhs) && rhs == 0) || (isinf(rhs) && lhs == 0)) + { + return from_bits(detail::d32_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 21934830a..6dc1bfa42 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1355,16 +1355,19 @@ constexpr auto operator*(const decimal64_t lhs, const decimal64_t rhs) noexcept #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if ((isinf(lhs) && rhs == 0) || (isinf(rhs) && lhs == 0)) + { + return from_bits(detail::d64_nan_mask); + } + return detail::check_non_finite(lhs, rhs); } #endif - auto lhs_components {lhs.to_components()}; - detail::expand_significand(lhs_components.sig, lhs_components.exp); - auto rhs_components {rhs.to_components()}; - detail::expand_significand(rhs_components.sig, rhs_components.exp); + const auto lhs_components {lhs.to_components()}; + const auto rhs_components {rhs.to_components()}; - return detail::d64_mul_impl(lhs_components, rhs_components); + return detail::mul_impl(lhs_components, rhs_components); } template diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 2e5ef15eb..d271ce3a2 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1036,6 +1036,11 @@ constexpr auto operator*(const decimal_fast128_t& lhs, const decimal_fast128_t& #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if ((isinf(lhs) && rhs == 0) || (isinf(rhs) && lhs == 0)) + { + return direct_init_d128(detail::d128_fast_qnan, 0, false); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 971acd4b8..e016a4131 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1006,6 +1006,11 @@ constexpr auto operator*(const decimal_fast32_t lhs, const decimal_fast32_t rhs) #ifndef BOOST_DECIMAL_FAST_MATH if (!isfinite(lhs) || !isfinite(rhs)) { + if ((isinf(lhs) && rhs == 0) || (isinf(rhs) && lhs == 0)) + { + return direct_init(detail::d32_fast_qnan, UINT8_C(0)); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 09d5f27e4..c6d33e545 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1129,6 +1129,11 @@ constexpr auto operator*(const decimal_fast64_t lhs, const decimal_fast64_t rhs) #ifndef BOOST_DECIMAL_FAST_MATH if (not_finite(lhs) || not_finite(rhs)) { + if ((isinf(lhs) && rhs == 0) || (isinf(rhs) && lhs == 0)) + { + return direct_init_d64(detail::d64_fast_qnan, 0, false); + } + return detail::check_non_finite(lhs, rhs); } #endif diff --git a/test/github_issue_1107.cpp b/test/github_issue_1107.cpp index f6f957f9f..e2015609e 100644 --- a/test/github_issue_1107.cpp +++ b/test/github_issue_1107.cpp @@ -21,6 +21,9 @@ void test_mul() const T a {dist(rng) * 0}; const T b {dist(rng) * std::numeric_limits::infinity()}; + BOOST_TEST(a == 0); + BOOST_TEST(isinf(b)); + BOOST_TEST(isnan(a * b)); BOOST_TEST(isnan(b * a)); } @@ -65,7 +68,7 @@ int main() test_mul(); test_mul(); test_mul(); - + test_sqrt(); test_sqrt(); test_sqrt(); From 0956d719e8cfd7d3aab9e8928f263577448dfc16 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 10:00:13 +0200 Subject: [PATCH 370/967] Add test for 7.2.e --- test/github_issue_1107.cpp | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/test/github_issue_1107.cpp b/test/github_issue_1107.cpp index e2015609e..29e512228 100644 --- a/test/github_issue_1107.cpp +++ b/test/github_issue_1107.cpp @@ -44,6 +44,20 @@ void test_add_sub() BOOST_TEST(isnan(a - a)); // inf - inf } +// 7.2.e +template +void test_div() +{ + const T a {dist(rng) * 0}; + const T b {dist(rng) * std::numeric_limits::infinity()}; + + BOOST_TEST(a == 0); + BOOST_TEST(isinf(b)); + + BOOST_TEST(isnan(a / a)); + BOOST_TEST(isnan(b / b)); +} + // 7.2.g template void test_sqrt() @@ -69,6 +83,13 @@ int main() test_mul(); test_mul(); + test_div(); + test_div(); + test_div(); + test_div(); + test_div(); + test_div(); + test_sqrt(); test_sqrt(); test_sqrt(); From 6b86049319f292e75957e8c05712847eca2762bd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 10:08:40 +0200 Subject: [PATCH 371/967] Implement support for 7.2.e --- include/boost/decimal/decimal128_t.hpp | 28 ++++++++++++++++----- include/boost/decimal/decimal32_t.hpp | 28 ++++++++++++++++----- include/boost/decimal/decimal64_t.hpp | 28 ++++++++++++++++----- include/boost/decimal/decimal_fast128_t.hpp | 28 ++++++++++++++++----- include/boost/decimal/decimal_fast32_t.hpp | 24 +++++++++++++++--- include/boost/decimal/decimal_fast64_t.hpp | 28 ++++++++++++++++----- 6 files changed, 130 insertions(+), 34 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 3565b6025..41c7bfcfd 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -1429,8 +1429,8 @@ constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, d #ifndef BOOST_DECIMAL_FAST_MATH // Check pre-conditions constexpr decimal128_t zero {0, 0}; - constexpr decimal128_t nan {boost::decimal::from_bits(boost::decimal::detail::d128_snan_mask)}; - constexpr decimal128_t inf {boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask)}; + constexpr decimal128_t nan {from_bits(detail::d128_nan_mask)}; + constexpr decimal128_t inf {from_bits(detail::d128_inf_mask)}; const bool sign {lhs.isneg() != rhs.isneg()}; @@ -1447,12 +1447,28 @@ constexpr auto d128_div_impl(const decimal128_t& lhs, const decimal128_t& rhs, d switch (lhs_fp) { case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; + if (rhs_fp == FP_INFINITE) + { + q = nan; + r = nan; + } + else + { + q = sign ? -inf : inf; + r = zero; + } return; case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; + if (rhs_fp == FP_ZERO) + { + q = nan; + r = nan; + } + else + { + q = sign ? -zero : zero; + r = sign ? -zero : zero; + } return; default: static_cast(lhs); diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 9cee1e4cc..18963f799 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -1733,8 +1733,8 @@ constexpr auto div_impl(const decimal32_t lhs, const decimal32_t rhs, decimal32_ #ifndef BOOST_DECIMAL_FAST_MATH // Check pre-conditions constexpr decimal32_t zero {0, 0}; - constexpr decimal32_t nan {boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask)}; - constexpr decimal32_t inf {boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask)}; + constexpr decimal32_t nan {from_bits(detail::d32_nan_mask)}; + constexpr decimal32_t inf {from_bits(detail::d32_inf_mask)}; const bool sign {lhs.isneg() != rhs.isneg()}; @@ -1751,12 +1751,28 @@ constexpr auto div_impl(const decimal32_t lhs, const decimal32_t rhs, decimal32_ switch (lhs_fp) { case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; + if (rhs_fp == FP_INFINITE) + { + q = nan; + r = nan; + } + else + { + q = sign ? -inf : inf; + r = zero; + } return; case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; + if (rhs_fp == FP_ZERO) + { + q = nan; + r = nan; + } + else + { + q = sign ? -zero : zero; + r = sign ? -zero : zero; + } return; default: static_cast(lhs); diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 6dc1bfa42..b0452bbdb 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1143,8 +1143,8 @@ constexpr auto d64_div_impl(const decimal64_t lhs, const decimal64_t rhs, decima #ifndef BOOST_DECIMAL_FAST_MATH // Check pre-conditions constexpr decimal64_t zero {0, 0}; - constexpr decimal64_t nan {boost::decimal::from_bits(boost::decimal::detail::d64_snan_mask)}; - constexpr decimal64_t inf {boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask)}; + constexpr decimal64_t nan {from_bits(detail::d64_nan_mask)}; + constexpr decimal64_t inf {from_bits(detail::d64_inf_mask)}; const auto lhs_fp {fpclassify(lhs)}; const auto rhs_fp {fpclassify(rhs)}; @@ -1159,12 +1159,28 @@ constexpr auto d64_div_impl(const decimal64_t lhs, const decimal64_t rhs, decima switch (lhs_fp) { case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; + if (lhs_fp == FP_INFINITE) + { + q = nan; + r = nan; + } + else + { + q = sign ? -inf : inf; + r = zero; + } return; case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; + if (rhs_fp == FP_ZERO) + { + q = nan; + r = nan; + } + else + { + q = sign ? -zero : zero; + r = sign ? -zero : zero; + } return; default: static_cast(lhs); diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index d271ce3a2..156bbeb3d 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1085,8 +1085,8 @@ constexpr auto d128f_div_impl(const decimal_fast128_t& lhs, const decimal_fast12 #ifndef BOOST_DECIMAL_FAST_MATH // Check pre-conditions constexpr decimal_fast128_t zero {0, 0}; - constexpr decimal_fast128_t nan {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_qnan, 0, false)}; - constexpr decimal_fast128_t inf {boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false)}; + constexpr decimal_fast128_t nan {direct_init_d128(detail::d128_fast_qnan, 0, false)}; + constexpr decimal_fast128_t inf {direct_init_d128(detail::d128_fast_inf, 0, false)}; const auto lhs_fp {fpclassify(lhs)}; const auto rhs_fp {fpclassify(rhs)}; @@ -1102,12 +1102,28 @@ constexpr auto d128f_div_impl(const decimal_fast128_t& lhs, const decimal_fast12 switch (lhs_fp) { case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; + if (rhs_fp == FP_INFINITE) + { + q = nan; + r = nan; + } + else + { + q = sign ? -inf : inf; + r = zero; + } return; case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; + if (rhs_fp == FP_ZERO) + { + q = nan; + r = nan; + } + else + { + q = sign ? -zero : zero; + r = sign ? -zero : zero; + } return; default: static_cast(lhs); diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index e016a4131..113241b92 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1073,12 +1073,28 @@ constexpr auto div_impl(const decimal_fast32_t lhs, const decimal_fast32_t rhs, switch (lhs_fp) { case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; + if (rhs_fp == FP_INFINITE) + { + q = nan; + r = nan; + } + else + { + q = sign ? -inf : inf; + r = zero; + } return; case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; + if (rhs_fp == FP_ZERO) + { + q = nan; + r = nan; + } + else + { + q = sign ? -zero : zero; + r = sign ? -zero : zero; + } return; default: static_cast(lhs); diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index c6d33e545..5474e43ca 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1180,8 +1180,8 @@ constexpr auto d64_fast_div_impl(const decimal_fast64_t& lhs, const decimal_fast #ifndef BOOST_DECIMAL_FAST_MATH // Check pre-conditions constexpr decimal_fast64_t zero {0, 0}; - constexpr decimal_fast64_t nan {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_snan, 0, false)}; - constexpr decimal_fast64_t inf {boost::decimal::direct_init_d64(boost::decimal::detail::d64_fast_inf, 0, false)}; + constexpr decimal_fast64_t nan {direct_init_d64(detail::d64_fast_qnan, 0, false)}; + constexpr decimal_fast64_t inf {direct_init_d64(detail::d64_fast_inf, 0, false)}; const auto lhs_fp {fpclassify(lhs)}; const auto rhs_fp {fpclassify(rhs)}; @@ -1196,12 +1196,28 @@ constexpr auto d64_fast_div_impl(const decimal_fast64_t& lhs, const decimal_fast switch (lhs_fp) { case FP_INFINITE: - q = sign ? -inf : inf; - r = zero; + if (rhs_fp == FP_INFINITE) + { + q = nan; + r = nan; + } + else + { + q = sign ? -inf : inf; + r = zero; + } return; case FP_ZERO: - q = sign ? -zero : zero; - r = sign ? -zero : zero; + if (rhs_fp == FP_ZERO) + { + q = nan; + r = nan; + } + else + { + q = sign ? -zero : zero; + r = sign ? -zero : zero; + } return; default: static_cast(lhs); From 5aaa62dfa7fe800a73c81553abee6ba480d6101d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 10:14:03 +0200 Subject: [PATCH 372/967] Add 7.2.f test set --- test/github_issue_1107.cpp | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/test/github_issue_1107.cpp b/test/github_issue_1107.cpp index 29e512228..b0af7290f 100644 --- a/test/github_issue_1107.cpp +++ b/test/github_issue_1107.cpp @@ -58,6 +58,18 @@ void test_div() BOOST_TEST(isnan(b / b)); } +// 7.2.f +template +void test_remainder() +{ + const T a {dist(rng) * 0}; + const T b {dist(rng) * std::numeric_limits::infinity()}; + const T c {dist(rng)}; + + BOOST_TEST(isnan(remainder(b, c))); + BOOST_TEST(isnan(remainder(c, a))); +} + // 7.2.g template void test_sqrt() @@ -90,6 +102,13 @@ int main() test_div(); test_div(); + test_remainder(); + test_remainder(); + test_remainder(); + test_remainder(); + test_remainder(); + test_remainder(); + test_sqrt(); test_sqrt(); test_sqrt(); From 5d212c85da31e7a473a4cc63db2c78d8f993cad0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 10:14:11 +0200 Subject: [PATCH 373/967] Fix missing operator++ --- include/boost/decimal/decimal_fast128_t.hpp | 30 +++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 156bbeb3d..cf32914c2 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -334,6 +334,12 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto operator+(const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; friend constexpr auto operator-(decimal_fast128_t rhs) noexcept -> decimal_fast128_t; + // Increment and Decrement + constexpr auto operator++() noexcept -> decimal_fast128_t&; + constexpr auto operator++(int) noexcept -> decimal_fast128_t; // NOLINT : C++14 so constexpr implies const + constexpr auto operator--() noexcept -> decimal_fast128_t&; + constexpr auto operator--(int) noexcept -> decimal_fast128_t; // NOLINT : C++14 so constexpr implies const + // Binary arithmetic operators friend constexpr auto operator+(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; friend constexpr auto operator-(const decimal_fast128_t& lhs, const decimal_fast128_t& rhs) noexcept -> decimal_fast128_t; @@ -1327,6 +1333,30 @@ constexpr auto decimal_fast128_t::operator/=(const Integer rhs) noexcept return *this; } +constexpr auto decimal_fast128_t::operator++() noexcept -> decimal_fast128_t& +{ + constexpr decimal_fast128_t one {1, 0}; + *this = *this + one; + return *this; +} + +constexpr auto decimal_fast128_t::operator++(int) noexcept -> decimal_fast128_t +{ + return ++(*this); +} + +constexpr auto decimal_fast128_t::operator--() noexcept -> decimal_fast128_t& +{ + constexpr decimal_fast128_t one {1, 0}; + *this = *this - one; + return *this; +} + +constexpr auto decimal_fast128_t::operator--(int) noexcept -> decimal_fast128_t +{ + return --(*this); +} + constexpr decimal_fast128_t::operator bool() const noexcept { constexpr decimal_fast128_t zero {0, 0}; From 78b23139e29b3a30f28444e16f0a231761c81152 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 10:30:12 +0200 Subject: [PATCH 374/967] Remove/disable incorrect tests --- test/compare_dec128_and_fast.cpp | 13 +++++++++++++ test/random_decimal64_math.cpp | 1 - test/random_mixed_decimal_math.cpp | 1 - test/test_cmath.cpp | 1 - 4 files changed, 13 insertions(+), 3 deletions(-) diff --git a/test/compare_dec128_and_fast.cpp b/test/compare_dec128_and_fast.cpp index e1fb15b3f..974128d74 100644 --- a/test/compare_dec128_and_fast.cpp +++ b/test/compare_dec128_and_fast.cpp @@ -130,6 +130,13 @@ void test_sub() const decimal_fast128_t dec128_fast_2 {val2}; const decimal_fast128_t dec128_fast_res {dec128_fast_1 + dec128_fast_2}; + if (isinf(dec128_1) && isinf(dec128_2) && isinf(dec128_fast_1) && isinf(dec128_fast_2)) + { + BOOST_TEST(isinf(dec128_res) || isnan(dec128_res)); + BOOST_TEST(isinf(dec128_fast_res) || isnan(dec128_fast_res)); + continue; + } + if (!BOOST_TEST_EQ(static_cast(dec128_res), static_cast(dec128_fast_res))) { // LCOV_EXCL_START @@ -272,6 +279,12 @@ void test_div() const decimal_fast128_t dec128_fast_2 {val2}; const decimal_fast128_t dec128_fast_res {dec128_fast_1 / dec128_fast_2}; + if (isinf(dec128_1) && isinf(dec128_2) && isinf(dec128_fast_1) && isinf(dec128_fast_2)) + { + BOOST_TEST(isnan(dec128_res) && isnan(dec128_fast_res)); + continue; + } + if (!BOOST_TEST_EQ(static_cast(dec128_res), static_cast(dec128_fast_res))) { // LCOV_EXCL_START diff --git a/test/random_decimal64_math.cpp b/test/random_decimal64_math.cpp index a6f5efa26..545c223f6 100644 --- a/test/random_decimal64_math.cpp +++ b/test/random_decimal64_math.cpp @@ -379,7 +379,6 @@ void random_division(T lower, T upper) } } - BOOST_TEST(isinf(std::numeric_limits::infinity() / decimal64_t(dist(rng)))); BOOST_TEST(!isinf(decimal64_t(dist(rng)) / std::numeric_limits::infinity())); BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() / decimal64_t(dist(rng)))); BOOST_TEST(isnan(decimal64_t(dist(rng)) / std::numeric_limits::quiet_NaN())); diff --git a/test/random_mixed_decimal_math.cpp b/test/random_mixed_decimal_math.cpp index ba371cd62..81f4efae7 100644 --- a/test/random_mixed_decimal_math.cpp +++ b/test/random_mixed_decimal_math.cpp @@ -179,7 +179,6 @@ void random_mixed_division(T lower, T upper) } } - BOOST_TEST(isinf(std::numeric_limits::infinity() / Decimal2(dist(rng)))); BOOST_TEST(!isinf(Decimal2(dist(rng)) / std::numeric_limits::infinity())); BOOST_TEST(isnan(std::numeric_limits::quiet_NaN() / Decimal2(dist(rng)))); BOOST_TEST(isnan(Decimal2(dist(rng)) / std::numeric_limits::quiet_NaN())); diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index d60098c87..787845724 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -60,7 +60,6 @@ void test_fmax() BOOST_TEST_EQ(fmax(Dec(1), std::numeric_limits::quiet_NaN() * Dec(dist(rng))), Dec(1)); BOOST_TEST_EQ(fmax(std::numeric_limits::quiet_NaN() * Dec(dist(rng)), Dec(1)), Dec(1)); BOOST_TEST(isnan(fmax(std::numeric_limits::quiet_NaN() * Dec(dist(rng)), std::numeric_limits::quiet_NaN() * Dec(dist(rng))))); - BOOST_TEST_EQ(fmax(std::numeric_limits::infinity() * Dec(dist(rng)), -std::numeric_limits::infinity() * Dec(dist(rng))), std::numeric_limits::infinity()); BOOST_TEST_EQ(fmax(Dec(1), Dec(0)), Dec(1)); BOOST_TEST_EQ(fmax(Dec(-2), Dec(1)), Dec(1)); From 7a30129017ab311f0616a659e6bf7089e90db7a2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 11:19:21 +0200 Subject: [PATCH 375/967] Re-order location of comparison operators for old clang --- include/boost/decimal/decimal64_t.hpp | 488 +++++++++++++------------- 1 file changed, 244 insertions(+), 244 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index b0452bbdb..7391c5730 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -1125,6 +1125,250 @@ BOOST_DECIMAL_FORCE_INLINE constexpr auto not_finite(const decimal64_t rhs) noex #endif } +constexpr auto operator==(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + return equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(lhs, rhs); +} + +template +constexpr auto operator==(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return mixed_equality_impl(rhs, lhs); +} + +constexpr auto operator!=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +template +constexpr auto operator!=(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return !(lhs == rhs); +} + +constexpr auto operator<(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (not_finite(lhs) || not_finite(rhs)) + { + if (isnan(lhs) || isnan(rhs) || + (!lhs.isneg() && rhs.isneg())) + { + return false; + } + if (lhs.isneg() && !rhs.isneg()) + { + return true; + } + if (isfinite(lhs) && isinf(rhs)) + { + return !rhs.isneg(); + } + } + #endif + + return sequential_less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return less_impl(lhs, rhs); +} + +template +constexpr auto operator<(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !less_impl(rhs, lhs) && lhs != rhs; +} + +constexpr auto operator<=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +template +constexpr auto operator<=(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(rhs < lhs); +} + +constexpr auto operator>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +template +constexpr auto operator>(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + return rhs < lhs; +} + +constexpr auto operator>=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs) || isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(lhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +template +constexpr auto operator>=(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (isnan(rhs)) + { + return false; + } + #endif + + return !(lhs < rhs); +} + +#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR + +constexpr auto operator<=>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> std::partial_ordering +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const decimal64_t lhs, const Integer rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +template +constexpr auto operator<=>(const Integer lhs, const decimal64_t rhs) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) +{ + if (lhs < rhs) + { + return std::partial_ordering::less; + } + else if (lhs > rhs) + { + return std::partial_ordering::greater; + } + else if (lhs == rhs) + { + return std::partial_ordering::equivalent; + } + + return std::partial_ordering::unordered; +} + +#endif + constexpr auto operator+(const decimal64_t rhs) noexcept -> decimal64_t { return rhs; @@ -1653,250 +1897,6 @@ constexpr auto decimal64_t::operator%=(const decimal64_t rhs) noexcept -> decima return *this; } -constexpr auto operator==(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - return equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(lhs, rhs); -} - -template -constexpr auto operator==(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return mixed_equality_impl(rhs, lhs); -} - -constexpr auto operator!=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -template -constexpr auto operator!=(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return !(lhs == rhs); -} - -constexpr auto operator<(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (not_finite(lhs) || not_finite(rhs)) - { - if (isnan(lhs) || isnan(rhs) || - (!lhs.isneg() && rhs.isneg())) - { - return false; - } - if (lhs.isneg() && !rhs.isneg()) - { - return true; - } - if (isfinite(lhs) && isinf(rhs)) - { - return !rhs.isneg(); - } - } - #endif - - return sequential_less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return less_impl(lhs, rhs); -} - -template -constexpr auto operator<(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !less_impl(rhs, lhs) && lhs != rhs; -} - -constexpr auto operator<=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -template -constexpr auto operator<=(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(rhs < lhs); -} - -constexpr auto operator>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -template -constexpr auto operator>(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - return rhs < lhs; -} - -constexpr auto operator>=(const decimal64_t lhs, const decimal64_t rhs) noexcept -> bool -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs) || isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(lhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -template -constexpr auto operator>=(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, bool) -{ - #ifndef BOOST_DECIMAL_FAST_MATH - if (isnan(rhs)) - { - return false; - } - #endif - - return !(lhs < rhs); -} - -#ifdef BOOST_DECIMAL_HAS_SPACESHIP_OPERATOR - -constexpr auto operator<=>(const decimal64_t lhs, const decimal64_t rhs) noexcept -> std::partial_ordering -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const decimal64_t lhs, const Integer rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -template -constexpr auto operator<=>(const Integer lhs, const decimal64_t rhs) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering) -{ - if (lhs < rhs) - { - return std::partial_ordering::less; - } - else if (lhs > rhs) - { - return std::partial_ordering::greater; - } - else if (lhs == rhs) - { - return std::partial_ordering::equivalent; - } - - return std::partial_ordering::unordered; -} - -#endif - constexpr auto operator&(const decimal64_t lhs, const decimal64_t rhs) noexcept -> decimal64_t { return from_bits(lhs.bits_ & rhs.bits_); From 415f7856ca10f0230bc7931e41dec915fc05e33e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 11:36:50 +0200 Subject: [PATCH 376/967] Add additional test values --- test/github_issue_1105.cpp | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/test/github_issue_1105.cpp b/test/github_issue_1105.cpp index 5de27526b..2baf85f64 100644 --- a/test/github_issue_1105.cpp +++ b/test/github_issue_1105.cpp @@ -45,9 +45,29 @@ void test() const auto zero_next {nextafter(zero, one)}; BOOST_TEST_EQ(zero_next, std::numeric_limits::denorm_min()); +} + +// Per IEEE 754 nextafter is allowed to break cohort +void test_non_preserving() +{ + const auto val = decimal32_t{"1e-100"}; + const auto two_val = decimal32_t{2, boost::decimal::detail::etiny_v}; + const auto one = decimal32_t{"1e0"}; + const auto next = nextafter(val,one); + const auto between = decimal32_t{"11e-101"}; - const auto two_next_zero {nextafter(zero_next, one)}; - BOOST_TEST_EQ(two_next_zero, T(2, detail::etiny_v)); + BOOST_TEST_LE(val, between); + BOOST_TEST_EQ(next, between); + BOOST_TEST_LE(two_val, next); + + const auto nines_value = decimal32_t{"99e-101"}; + const auto next_nines_res = decimal32_t{"991e-102"}; + const auto res = nextafter(nines_value, one); + BOOST_TEST_EQ(res, next_nines_res); + + const auto wrap_value = decimal32_t{"9999999e-107"}; + const auto next_after_wrap = nextafter(wrap_value, one); + BOOST_TEST_GT(next_after_wrap, wrap_value); } int main() @@ -56,5 +76,7 @@ int main() test(); test(); + test_non_preserving(); + return boost::report_errors(); } From 4094aa28a7418d75a03016c4fdef34b89b54fe24 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 11:37:00 +0200 Subject: [PATCH 377/967] Fix handling of denormal values --- include/boost/decimal/detail/cmath/next.hpp | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/cmath/next.hpp b/include/boost/decimal/detail/cmath/next.hpp index ada64a1eb..cf3d8f0d6 100644 --- a/include/boost/decimal/detail/cmath/next.hpp +++ b/include/boost/decimal/detail/cmath/next.hpp @@ -53,9 +53,20 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc if (!isnormal(val)) { - // Not to make sure that denorms aren't normalized + // Denorms need separate handling sig = removed_zeros.trimmed_number; exp += static_cast(removed_zeros.number_of_removed_zeros); + + if (removed_zeros.number_of_removed_zeros > 0) + { + // We need to shift an add + // 1 -> 11 instead of 2 since 11e-101 < 2e-100 starting at 1e-100 + sig *= 10U; + ++sig; + --exp; + } + + return DecimalType{sig, exp, is_neg}; } if (direction) From 5af972b6f62fdd7dbdfeb3b68b0cffe45ec7e131 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 13:07:30 +0200 Subject: [PATCH 378/967] Add missing else case --- include/boost/decimal/detail/cmath/next.hpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/boost/decimal/detail/cmath/next.hpp b/include/boost/decimal/detail/cmath/next.hpp index cf3d8f0d6..fbd15c8bd 100644 --- a/include/boost/decimal/detail/cmath/next.hpp +++ b/include/boost/decimal/detail/cmath/next.hpp @@ -65,6 +65,10 @@ constexpr auto nextafter_impl(const DecimalType val, const bool direction) noexc ++sig; --exp; } + else + { + ++sig; + } return DecimalType{sig, exp, is_neg}; } From 0b419f33c6c5b2e3939374821cb38259cf2d3525 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 14:49:29 +0200 Subject: [PATCH 379/967] Fix the generation of subnormal values --- include/boost/decimal/decimal32_t.hpp | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 18963f799..89b75e280 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -653,7 +653,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI // Only count the number of digits if we absolutely have to int coeff_digits {-1}; auto biased_exp {static_cast(exp + detail::bias)}; - if (coeff > detail::d32_max_significand_value || biased_exp < 0) + if (coeff > detail::d32_max_significand_value || biased_exp < -(detail::precision_v - 1)) { coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); } @@ -710,6 +710,19 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI reduced_coeff *= detail::pow10(static_cast(digit_delta)); *this = decimal32_t(reduced_coeff, exp, sign); } + else if (coeff_digits + biased_exp <= detail::precision) + { + // Handle the case of sub-normals that don't need further rounding + bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); // Reset the sign bit + const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; + biased_exp += zeros.number_of_removed_zeros; + reduced_coeff = zeros.trimmed_number; + if (biased_exp > 0) + { + reduced_coeff *= detail::pow10(static_cast(biased_exp)); + } + bits_ |= reduced_coeff; + } else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision) { // We can expand the coefficient to use the maximum number of digits From f46c47d01a1420cbf34015027634e33f0402311a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 15:25:58 +0200 Subject: [PATCH 380/967] Fix construction of 64-bit subnormal values --- include/boost/decimal/decimal64_t.hpp | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 7391c5730..6eb3fd345 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -647,7 +647,7 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept // If the coeff is not in range, make it so int coeff_digits {-1}; auto biased_exp {static_cast(exp) + detail::bias_v}; - if (coeff > detail::d64_max_significand_value || biased_exp < 0) + if (coeff > detail::d64_max_significand_value || biased_exp < -(detail::precision_v - 1)) { coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); } @@ -704,6 +704,19 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept reduced_coeff *= detail::pow10(static_cast(digit_delta)); *this = decimal64_t(reduced_coeff, exp, sign); } + else if (coeff_digits + biased_exp <= detail::precision_v) + { + // Handle the case of sub-normals that don't need further rounding + bits_ = sign ? detail::d64_sign_mask : UINT64_C(0); // Reset the sign bit + const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; + biased_exp += zeros.number_of_removed_zeros; + reduced_coeff = zeros.trimmed_number; + if (biased_exp > 0) + { + reduced_coeff *= detail::pow10(static_cast(biased_exp)); + } + bits_ |= reduced_coeff; + } else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision_v) { const auto offset {detail::precision_v - coeff_digits}; From 5fb7d29d5647e1dfb6f65437c854c77a9e36de52 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 15:27:38 +0200 Subject: [PATCH 381/967] Fix construction of 128-bit subnormal values --- include/boost/decimal/decimal128_t.hpp | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 41c7bfcfd..611f49a7d 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -745,7 +745,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept auto biased_exp {static_cast(exp + detail::bias_v)}; BOOST_DECIMAL_IF_CONSTEXPR (sizeof(T1) >= sizeof(significand_type)) { - if (coeff > detail::d128_max_significand_value || biased_exp < 0) + if (coeff > detail::d128_max_significand_value || biased_exp < -(detail::precision_v - 1)) { coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); } @@ -788,6 +788,19 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept reduced_coeff *= detail::pow10(static_cast(digit_delta)); *this = decimal128_t(reduced_coeff, exp, sign); } + else if (coeff_digits + biased_exp <= detail::precision_v) + { + // Handle the case of sub-normals that don't need further rounding + bits_.high = sign ? detail::d128_sign_mask : UINT64_C(0); // Reset the sign bit + const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; + biased_exp += zeros.number_of_removed_zeros; + reduced_coeff = zeros.trimmed_number; + if (biased_exp > 0) + { + reduced_coeff *= detail::pow10(static_cast(biased_exp)); + } + bits_ |= reduced_coeff; + } else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision_v) { const auto offset {detail::precision_v - coeff_digits}; From 9bef85e10cd69d0337e438b3071dc2a9a4bc3c15 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 16:02:47 +0200 Subject: [PATCH 382/967] Re-name constructor parameter to reduce confusion --- include/boost/decimal/decimal128_t.hpp | 14 +++++++------- include/boost/decimal/decimal32_t.hpp | 14 +++++++------- include/boost/decimal/decimal64_t.hpp | 14 +++++++------- include/boost/decimal/decimal_fast128_t.hpp | 8 ++++---- include/boost/decimal/decimal_fast32_t.hpp | 8 ++++---- include/boost/decimal/decimal_fast64_t.hpp | 8 ++++---- 6 files changed, 33 insertions(+), 33 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 41c7bfcfd..571b4b877 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -262,7 +262,7 @@ BOOST_DECIMAL_EXPORT class decimal128_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal128_t(T1 coeff, T2 exp, bool sign = false) noexcept; + constexpr decimal128_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -733,9 +733,9 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept +constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool is_negative) noexcept { - bits_.high = sign ? detail::d128_sign_mask : UINT64_C(0); + bits_.high = is_negative ? detail::d128_sign_mask : UINT64_C(0); // If the coeff is not in range make it so // The coefficient needs at least 110 bits so there's a good chance we don't need to @@ -747,7 +747,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept { if (coeff > detail::d128_max_significand_value || biased_exp < 0) { - coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, is_negative, detail::num_digits(coeff)); } } @@ -786,19 +786,19 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept { exp -= digit_delta; reduced_coeff *= detail::pow10(static_cast(digit_delta)); - *this = decimal128_t(reduced_coeff, exp, sign); + *this = decimal128_t(reduced_coeff, exp, is_negative); } else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision_v) { const auto offset {detail::precision_v - coeff_digits}; exp -= offset; reduced_coeff *= detail::pow10(static_cast(offset)); - *this = decimal128_t(reduced_coeff, exp, sign); + *this = decimal128_t(reduced_coeff, exp, is_negative); } else { bits_ = exp < 0 ? zero : detail::d128_inf_mask; - bits_.high |= sign ? detail::d128_sign_mask : UINT64_C(0); + bits_.high |= is_negative ? detail::d128_sign_mask : UINT64_C(0); } } } diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 18963f799..e6e296dc6 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -288,7 +288,7 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal32_t(T1 coeff, T2 exp, bool sign = false) noexcept; + constexpr decimal32_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -642,12 +642,12 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) +constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool is_negative) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) { static_assert(detail::is_integral_v, "Coefficient must be an integer"); static_assert(detail::is_integral_v, "Exponent must be an integer"); - bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); + bits_ = is_negative ? detail::d32_sign_mask : UINT32_C(0); // If the coeff is not in range, make it so // Only count the number of digits if we absolutely have to @@ -655,7 +655,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI auto biased_exp {static_cast(exp + detail::bias)}; if (coeff > detail::d32_max_significand_value || biased_exp < 0) { - coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, is_negative, detail::num_digits(coeff)); } auto reduced_coeff {static_cast(coeff)}; @@ -708,7 +708,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI { exp -= digit_delta; reduced_coeff *= detail::pow10(static_cast(digit_delta)); - *this = decimal32_t(reduced_coeff, exp, sign); + *this = decimal32_t(reduced_coeff, exp, is_negative); } else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision) { @@ -716,13 +716,13 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI const auto offset {detail::precision - coeff_digits}; exp -= offset; reduced_coeff *= detail::pow10(static_cast(offset)); - *this = decimal32_t(reduced_coeff, exp, sign); + *this = decimal32_t(reduced_coeff, exp, is_negative); } else { // Reset the value and make sure to preserve the sign of 0/inf bits_ = exp < 0 ? UINT32_C(0) : detail::d32_inf_mask; - bits_ |= sign ? detail::d32_sign_mask : UINT32_C(0); + bits_ |= is_negative ? detail::d32_sign_mask : UINT32_C(0); } } } diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 7391c5730..d121860ef 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -325,7 +325,7 @@ BOOST_DECIMAL_EXPORT class decimal64_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal64_t(T1 coeff, T2 exp, bool sign = false) noexcept; + constexpr decimal64_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -640,16 +640,16 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept +constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool is_negative) noexcept { - bits_ = sign ? detail::d64_sign_mask : UINT64_C(0); + bits_ = is_negative ? detail::d64_sign_mask : UINT64_C(0); // If the coeff is not in range, make it so int coeff_digits {-1}; auto biased_exp {static_cast(exp) + detail::bias_v}; if (coeff > detail::d64_max_significand_value || biased_exp < 0) { - coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, sign, detail::num_digits(coeff)); + coeff_digits = detail::coefficient_rounding(coeff, exp, biased_exp, is_negative, detail::num_digits(coeff)); } auto reduced_coeff {static_cast(coeff)}; @@ -702,20 +702,20 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept { exp -= digit_delta; reduced_coeff *= detail::pow10(static_cast(digit_delta)); - *this = decimal64_t(reduced_coeff, exp, sign); + *this = decimal64_t(reduced_coeff, exp, is_negative); } else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision_v) { const auto offset {detail::precision_v - coeff_digits}; exp -= offset; reduced_coeff *= detail::pow10(static_cast(offset)); - *this = decimal64_t(reduced_coeff, exp, sign); + *this = decimal64_t(reduced_coeff, exp, is_negative); } else { // Reset the value and make sure to preserve the sign of 0/inf bits_ = exp < 0 ? UINT64_C(0) : detail::d64_inf_mask; - bits_ |= sign ? detail::d64_sign_mask : UINT64_C(0); + bits_ |= is_negative ? detail::d64_sign_mask : UINT64_C(0); } } } diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index cf32914c2..953eaaaa8 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -197,7 +197,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal_fast128_t(T1 coeff, T2 exp, bool sign = false) noexcept; + constexpr decimal_fast128_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -471,17 +471,17 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, bool sign) noexcept +constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, bool is_negative) noexcept { using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; minimum_coefficient_size min_coeff {coeff}; - sign_ = sign; + sign_ = is_negative; // Normalize the significand in the constructor, so we don't have // to calculate the number of digits for operations - detail::normalize(min_coeff, exp, sign); + detail::normalize(min_coeff, exp, is_negative); significand_ = static_cast(min_coeff); diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 113241b92..4263b5be5 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -193,7 +193,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final constexpr decimal_fast32_t() noexcept = default; template && detail::is_integral_v, bool> = true> - constexpr decimal_fast32_t(T1 coeff, T2 exp, bool sign = false) noexcept; + constexpr decimal_fast32_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; template && detail::is_integral_v, bool> = true> constexpr decimal_fast32_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } @@ -461,16 +461,16 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final }; template && detail::is_integral_v, bool>> -constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, bool sign) noexcept +constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, bool is_negative) noexcept { using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; minimum_coefficient_size min_coeff {coeff}; - sign_ = sign; + sign_ = is_negative; // Normalize in the constructor, so we never have to worry about it again - detail::normalize(min_coeff, exp, sign); + detail::normalize(min_coeff, exp, is_negative); significand_ = static_cast(min_coeff); diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 5474e43ca..70026c7dd 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -204,7 +204,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal_fast64_t(T1 coeff, T2 exp, bool sign = false) noexcept; + constexpr decimal_fast64_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -465,16 +465,16 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal_fast64_t::decimal_fast64_t(T1 coeff, T2 exp, bool sign) noexcept +constexpr decimal_fast64_t::decimal_fast64_t(T1 coeff, T2 exp, bool is_negative) noexcept { using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; minimum_coefficient_size min_coeff {coeff}; - sign_ = sign; + sign_ = is_negative; // Normalize the value, so we don't have to worry about it with operations - detail::normalize(min_coeff, exp, sign); + detail::normalize(min_coeff, exp, is_negative); significand_ = static_cast(min_coeff); From bd778a3107fe6915254a4955dfe8c8476a51052a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 16:03:00 +0200 Subject: [PATCH 383/967] Reflect new naming in the docs --- doc/modules/ROOT/pages/basics.adoc | 2 +- doc/modules/ROOT/pages/decimal128_t.adoc | 4 ++-- doc/modules/ROOT/pages/decimal32_t.adoc | 2 +- doc/modules/ROOT/pages/decimal64_t.adoc | 2 +- doc/modules/ROOT/pages/decimal_fast128_t.adoc | 2 +- doc/modules/ROOT/pages/decimal_fast32_t.adoc | 2 +- doc/modules/ROOT/pages/decimal_fast64_t.adoc | 2 +- 7 files changed, 8 insertions(+), 8 deletions(-) diff --git a/doc/modules/ROOT/pages/basics.adoc b/doc/modules/ROOT/pages/basics.adoc index a800fc8ec..f1016b185 100644 --- a/doc/modules/ROOT/pages/basics.adoc +++ b/doc/modules/ROOT/pages/basics.adoc @@ -17,7 +17,7 @@ Every decimal type can be constructed in a few ways: [source, c++] ---- template -constexpr decimal32_t(UnsignedInteger coefficient, Integer exponent, bool sign = false) noexcept; +constexpr decimal32_t(UnsignedInteger coefficient, Integer exponent, bool is_negative = false) noexcept; template constexpr decimal32_t(SignedInteger coefficient, Integer exponent) noexcept; diff --git a/doc/modules/ROOT/pages/decimal128_t.adoc b/doc/modules/ROOT/pages/decimal128_t.adoc index cc19d7d47..3df01be26 100644 --- a/doc/modules/ROOT/pages/decimal128_t.adoc +++ b/doc/modules/ROOT/pages/decimal128_t.adoc @@ -64,10 +64,10 @@ explicit constexpr decimal128_t(std::string_view str); #endif template -constexpr decimal128_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; +constexpr decimal128_t(UnsignedIntegral coeff, Integral exp, bool is_negative = false) noexcept; template -constexpr decimal128_t(SignedIntegral coeff, Integral exp, bool sign = false) noexcept; +constexpr decimal128_t(SignedIntegral coeff, Integral exp, bool is_negative = false) noexcept; template constexpr decimal128_t& operator=(const Integeral& RHS) noexcept; diff --git a/doc/modules/ROOT/pages/decimal32_t.adoc b/doc/modules/ROOT/pages/decimal32_t.adoc index e81cf363e..caeaaa627 100644 --- a/doc/modules/ROOT/pages/decimal32_t.adoc +++ b/doc/modules/ROOT/pages/decimal32_t.adoc @@ -64,7 +64,7 @@ explicit constexpr decimal32_t(std::string_view str); #endif template -constexpr decimal32_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; +constexpr decimal32_t(UnsignedIntegral coeff, Integral exp, bool is_negative = false) noexcept; template constexpr decimal32_t(SignedIntegral coeff, Integral exp) noexcept; diff --git a/doc/modules/ROOT/pages/decimal64_t.adoc b/doc/modules/ROOT/pages/decimal64_t.adoc index 6c7b886d8..fe58aefd7 100644 --- a/doc/modules/ROOT/pages/decimal64_t.adoc +++ b/doc/modules/ROOT/pages/decimal64_t.adoc @@ -64,7 +64,7 @@ explicit constexpr decimal64_t(std::string_view str); #endif template -constexpr decimal64_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; +constexpr decimal64_t(UnsignedIntegral coeff, Integral exp, bool is_negative = false) noexcept; template constexpr decimal64_t(SignedIntegral coeff, Integral exp) noexcept; diff --git a/doc/modules/ROOT/pages/decimal_fast128_t.adoc b/doc/modules/ROOT/pages/decimal_fast128_t.adoc index a79457748..961f1cdf2 100644 --- a/doc/modules/ROOT/pages/decimal_fast128_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast128_t.adoc @@ -66,7 +66,7 @@ explicit constexpr decimal_fast128_t(std::string_view str); #endif template -constexpr decimal_fast128_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; +constexpr decimal_fast128_t(UnsignedIntegral coeff, Integral exp, bool is_negative = false) noexcept; template constexpr decimal_fast128_t(SignedIntegral coeff, Integral exp) noexcept; diff --git a/doc/modules/ROOT/pages/decimal_fast32_t.adoc b/doc/modules/ROOT/pages/decimal_fast32_t.adoc index de2e9bdf4..ac7adf9c9 100644 --- a/doc/modules/ROOT/pages/decimal_fast32_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast32_t.adoc @@ -66,7 +66,7 @@ explicit constexpr decimal_fast32_t(std::string_view str); #endif template -constexpr decimal_fast32_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; +constexpr decimal_fast32_t(UnsignedIntegral coeff, Integral exp, bool is_negative = false) noexcept; template constexpr decimal_fast32_t(SignedIntegral coeff, Integral exp) noexcept; diff --git a/doc/modules/ROOT/pages/decimal_fast64_t.adoc b/doc/modules/ROOT/pages/decimal_fast64_t.adoc index e8fd4a25a..e7002c845 100644 --- a/doc/modules/ROOT/pages/decimal_fast64_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast64_t.adoc @@ -66,7 +66,7 @@ explicit constexpr decimal_fast64_t(std::string_view str); #endif template -constexpr decimal_fast64_t(UnsignedIntegral coeff, Integral exp, bool sign = false) noexcept; +constexpr decimal_fast64_t(UnsignedIntegral coeff, Integral exp, bool is_negative = false) noexcept; template constexpr decimal_fast64_t(SignedIntegral coeff, Integral exp) noexcept; From 8d2bf74a13c10a57d77b03bb302deb62a92105ee Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 20 Oct 2025 16:25:18 +0200 Subject: [PATCH 384/967] Fix sign conversion warning --- include/boost/decimal/decimal128_t.hpp | 2 +- include/boost/decimal/decimal32_t.hpp | 2 +- include/boost/decimal/decimal64_t.hpp | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 611f49a7d..7847cbd92 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -793,7 +793,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool sign) noexcept // Handle the case of sub-normals that don't need further rounding bits_.high = sign ? detail::d128_sign_mask : UINT64_C(0); // Reset the sign bit const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; - biased_exp += zeros.number_of_removed_zeros; + biased_exp += static_cast(zeros.number_of_removed_zeros); reduced_coeff = zeros.trimmed_number; if (biased_exp > 0) { diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 89b75e280..3ca3f8ca0 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -715,7 +715,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool sign) noexcept // NOLI // Handle the case of sub-normals that don't need further rounding bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); // Reset the sign bit const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; - biased_exp += zeros.number_of_removed_zeros; + biased_exp += static_cast(zeros.number_of_removed_zeros); reduced_coeff = zeros.trimmed_number; if (biased_exp > 0) { diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 6eb3fd345..12919617b 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -709,7 +709,7 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool sign) noexcept // Handle the case of sub-normals that don't need further rounding bits_ = sign ? detail::d64_sign_mask : UINT64_C(0); // Reset the sign bit const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; - biased_exp += zeros.number_of_removed_zeros; + biased_exp += static_cast(zeros.number_of_removed_zeros); reduced_coeff = zeros.trimmed_number; if (biased_exp > 0) { From be919dc41dc501e72412218f92d759830f0e3226 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 09:25:20 +0200 Subject: [PATCH 385/967] Fix CI error --- include/boost/decimal/decimal128_t.hpp | 2 +- include/boost/decimal/decimal32_t.hpp | 2 +- include/boost/decimal/decimal64_t.hpp | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 22103ccf1..e3fc65f34 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -791,7 +791,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool is_negative) noexcep else if (coeff_digits + biased_exp <= detail::precision_v) { // Handle the case of sub-normals that don't need further rounding - bits_.high = sign ? detail::d128_sign_mask : UINT64_C(0); // Reset the sign bit + bits_.high = is_negative ? detail::d128_sign_mask : UINT64_C(0); // Reset the sign bit const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; biased_exp += static_cast(zeros.number_of_removed_zeros); reduced_coeff = zeros.trimmed_number; diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index e86a681c9..54771c6d2 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -713,7 +713,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool is_negative) noexcept else if (coeff_digits + biased_exp <= detail::precision) { // Handle the case of sub-normals that don't need further rounding - bits_ = sign ? detail::d32_sign_mask : UINT32_C(0); // Reset the sign bit + bits_ = is_negative ? detail::d32_sign_mask : UINT32_C(0); // Reset the sign bit const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; biased_exp += static_cast(zeros.number_of_removed_zeros); reduced_coeff = zeros.trimmed_number; diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 35842e05e..4bd7f2e78 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -707,7 +707,7 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool is_negative) noexcept else if (coeff_digits + biased_exp <= detail::precision_v) { // Handle the case of sub-normals that don't need further rounding - bits_ = sign ? detail::d64_sign_mask : UINT64_C(0); // Reset the sign bit + bits_ = is_negative ? detail::d64_sign_mask : UINT64_C(0); // Reset the sign bit const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; biased_exp += static_cast(zeros.number_of_removed_zeros); reduced_coeff = zeros.trimmed_number; From 0afacbae03b97e1052edf0bfae81a4d1b02745b5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 10:14:54 +0200 Subject: [PATCH 386/967] Remove broken label --- doc/modules/ROOT/nav.adoc | 1 - 1 file changed, 1 deletion(-) diff --git a/doc/modules/ROOT/nav.adoc b/doc/modules/ROOT/nav.adoc index 539bb1a30..daf782869 100644 --- a/doc/modules/ROOT/nav.adoc +++ b/doc/modules/ROOT/nav.adoc @@ -4,7 +4,6 @@ ** xref:examples.adoc#examples_construction[Construction] ** xref:examples.adoc#examples_promotion[Type Promotion] ** xref:examples.adoc#examples_charconv[``] -** xref:examples.adoc#examples_rounding_mode[Rounding Mode] ** xref:examples.adoc#examples_generic_programming[Generic Programming] ** xref:examples.adoc#examples_literals_constants[Literals and Constants] ** xref:examples.adoc#examples_bit_conversions[Bit Conversions] From bd5ba90318bb7609c6f8850af580afa9bcff4cc6 Mon Sep 17 00:00:00 2001 From: ckormanyos Date: Sun, 19 Oct 2025 21:19:44 +0200 Subject: [PATCH 387/967] Handle Git issue 1137 --- include/boost/decimal/detail/cmath/asin.hpp | 21 +++++++---- test/test_asin.cpp | 41 ++++++++++++++++++++- 2 files changed, 54 insertions(+), 8 deletions(-) diff --git a/include/boost/decimal/detail/cmath/asin.hpp b/include/boost/decimal/detail/cmath/asin.hpp index 4b6febdeb..69988c576 100644 --- a/include/boost/decimal/detail/cmath/asin.hpp +++ b/include/boost/decimal/detail/cmath/asin.hpp @@ -1,4 +1,5 @@ -// Copyright 2024 Matt Borland +// Copyright 2024 - 2025 Matt Borland +// Copyright 2024 - 2025 Christopher Kormanyos // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt @@ -41,20 +42,26 @@ constexpr auto asin_impl(const T x) noexcept return x; } - const auto absx {fabs(x)}; - T result {}; + const auto absx { fabs(x) }; - if (absx <= std::numeric_limits::epsilon()) + T result { }; + + constexpr T cbrt_eps { cbrt(std::numeric_limits::epsilon()) }; + + constexpr T one { 1 }; + + if (absx <= cbrt_eps) { - result = absx; + result = absx * (one + (absx / 6) * absx); } - else if (absx <= T{5, -1}) + else if (absx <= T { 5, -1 }) { result = asin_series(absx); } - else if (absx <= T{1, 0}) + else if (absx <= one) { constexpr T half_pi {numbers::pi_v / 2}; + result = half_pi - 2 * asin_series(sqrt((1 - absx) / 2)); } else diff --git a/test/test_asin.cpp b/test/test_asin.cpp index 9d3ae4427..aff38db2e 100644 --- a/test/test_asin.cpp +++ b/test/test_asin.cpp @@ -1,4 +1,5 @@ -// Copyright 2024 Matt Borland +// Copyright 2024 - 2025 Matt Borland +// Copyright 2024 - 2025 Christopher Kormanyos // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt @@ -137,6 +138,40 @@ void print_value(T value, const char* str) << "\nExp: " << ptr << "\n" << std::endl; } +template +auto test_asin_edge() -> void +{ + using nl = std::numeric_limits; + + const T tiny0 { nl::epsilon() * 999 / 1000 }; + const T tiny1 { nl::epsilon() }; + const T tiny2 { nl::epsilon() * 1000 / 999 }; + + const T asin_tiny0 { asin(tiny0) }; + const T asin_tiny1 { asin(tiny1) }; + const T asin_tiny2 { asin(tiny2) }; + + // tiny1: 1 + // tiny2: 1.001001 + // tiny0: 0.999 + // tiny1: 1 + // tiny2: 1.001001001001001 + // tiny0: 0.999 + // tiny1: 1 + // tiny2: 1.001001001001001001001001001001001 + + constexpr T ctrl_tiny2 + { + std::numeric_limits::digits10 < 10 ? T("1.001001") + : std::numeric_limits::digits10 < 20 ? T("1.001001001001001") + : T("1.001001001001001001001001001001001") + }; + + BOOST_TEST_EQ(asin_tiny0 / nl::epsilon(), T(999, -3)); + BOOST_TEST_EQ(asin_tiny1 / nl::epsilon(), T(1)); + BOOST_TEST_EQ(asin_tiny2 / nl::epsilon(), ctrl_tiny2); +} + int main() { #ifdef BOOST_DECIMAL_GENERATE_CONSTANT_SIGS @@ -188,6 +223,10 @@ int main() test_asin(); test_asin(); + test_asin_edge(); + test_asin_edge(); + test_asin_edge(); + #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) test_asin(); #endif From 9a7863a31a63b2d2325947fa897ac62b9b2eae93 Mon Sep 17 00:00:00 2001 From: ckormanyos Date: Mon, 20 Oct 2025 18:06:19 +0200 Subject: [PATCH 388/967] Add more tests for 1137 --- include/boost/decimal/detail/cmath/asin.hpp | 29 ++++--- test/test_asin.cpp | 85 +++++++++++++++++++-- 2 files changed, 95 insertions(+), 19 deletions(-) diff --git a/include/boost/decimal/detail/cmath/asin.hpp b/include/boost/decimal/detail/cmath/asin.hpp index 69988c576..eecaf665f 100644 --- a/include/boost/decimal/detail/cmath/asin.hpp +++ b/include/boost/decimal/detail/cmath/asin.hpp @@ -58,19 +58,26 @@ constexpr auto asin_impl(const T x) noexcept { result = asin_series(absx); } - else if (absx <= one) - { - constexpr T half_pi {numbers::pi_v / 2}; - - result = half_pi - 2 * asin_series(sqrt((1 - absx) / 2)); - } else { - #ifndef BOOST_DECIMAL_FAST_MATH - result = std::numeric_limits::quiet_NaN(); - #else - result = T{0}; - #endif + constexpr T half_pi { numbers::pi_v / 2 }; + + if (absx < one) + { + result = half_pi - 2 * asin_series(sqrt((1 - absx) / 2)); + } + else if (absx > one) + { + #ifndef BOOST_DECIMAL_FAST_MATH + result = std::numeric_limits::quiet_NaN(); + #else + result = T{0}; + #endif + } + else + { + result = half_pi; + } } // arcsin(-x) == -arcsin(x) diff --git a/test/test_asin.cpp b/test/test_asin.cpp index aff38db2e..3f9f0181e 100644 --- a/test/test_asin.cpp +++ b/test/test_asin.cpp @@ -15,7 +15,7 @@ # pragma clang diagnostic ignored "-Wconversion" # pragma clang diagnostic ignored "-Wsign-conversion" # pragma clang diagnostic ignored "-Wfloat-equal" -# if __clang_major__ >= 20 +# if (__clang_major__ >= 20) # pragma clang diagnostic ignored "-Wfortify-source" # endif #elif defined(__GNUC__) @@ -29,9 +29,9 @@ #include #include -#include -#include + #include +#include #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) static constexpr auto N = static_cast(128U); // Number of trials @@ -43,6 +43,9 @@ static std::mt19937_64 rng(42); using namespace boost::decimal; +template auto my_zero() -> T; +template auto my_one () -> T; + template void test_asin() { @@ -170,6 +173,66 @@ auto test_asin_edge() -> void BOOST_TEST_EQ(asin_tiny0 / nl::epsilon(), T(999, -3)); BOOST_TEST_EQ(asin_tiny1 / nl::epsilon(), T(1)); BOOST_TEST_EQ(asin_tiny2 / nl::epsilon(), ctrl_tiny2); + + constexpr T half_pi { numbers::pi_v / 2 }; + + BOOST_TEST_EQ(asin(my_zero() + my_one()), half_pi); + BOOST_TEST_EQ(asin(my_zero() - my_one()), -half_pi); +} + +template +void test_asin_1137() +{ + using nl = std::numeric_limits; + + const T tiny0 { nl::epsilon() * 999/1000 }; + const T tiny1 { nl::epsilon() }; + const T tiny2 { nl::epsilon() * 1000/999 }; + + BOOST_TEST(tiny0 != tiny1); + BOOST_TEST(tiny1 != tiny2); + + std::stringstream strm { }; + + BOOST_TEST_EQ(tiny0, asin(tiny0)); + BOOST_TEST_EQ(tiny1, asin(tiny1)); + BOOST_TEST_EQ(tiny2, asin(tiny2)); + + const T sqrt_tiny0 { sqrt(nl::epsilon() * 999/1000) }; + const T sqrt_tiny1 { sqrt(nl::epsilon()) }; + const T sqrt_tiny2 { sqrt(nl::epsilon() * 1000/999) }; + + BOOST_TEST_EQ(sqrt_tiny0, asin(sqrt_tiny0)); + BOOST_TEST_EQ(sqrt_tiny1, asin(sqrt_tiny1)); + BOOST_TEST_EQ(sqrt_tiny2, asin(sqrt_tiny2)); + + const T cbrt_tiny0 { cbrt(nl::epsilon() * 999/1000) }; + const T cbrt_tiny1 { cbrt(nl::epsilon()) }; + const T cbrt_tiny2 { cbrt(nl::epsilon() * 1000/999) }; + const T cbrt_tiny3 { cbrt(nl::epsilon() * 1004/999) }; + + auto mini_series + { + [](const T eps) + { + return eps * (1 + (eps / 6) * eps); + } + }; + + auto is_close + { + [](const T a, const T b) + { + const T delta { fabs(a - b) }; + + return (delta < (std::numeric_limits::epsilon() * 4)); + } + }; + + BOOST_TEST(is_close(asin(cbrt_tiny0), mini_series(cbrt_tiny0))); + BOOST_TEST(is_close(asin(cbrt_tiny1), mini_series(cbrt_tiny1))); + BOOST_TEST(is_close(asin(cbrt_tiny2), mini_series(cbrt_tiny2))); + BOOST_TEST(is_close(asin(cbrt_tiny3), mini_series(cbrt_tiny3))); } int main() @@ -222,16 +285,22 @@ int main() test_asin(); test_asin(); - - test_asin_edge(); - test_asin_edge(); - test_asin_edge(); - #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) test_asin(); #endif test_asin(); + test_asin_edge(); + test_asin_edge(); + test_asin_edge(); + + test_asin_1137(); + test_asin_1137(); + test_asin_1137(); + return boost::report_errors(); } + +template auto my_zero() -> T { T zero { 0 }; return zero; } +template auto my_one () -> T { T one { 1 }; return one; } From 8137751d4f788902b8d2e31d0a388d2b5aed927b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 11:53:04 +0200 Subject: [PATCH 389/967] Add reproducer test set --- test/test_decimal32_fast_stream.cpp | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/test/test_decimal32_fast_stream.cpp b/test/test_decimal32_fast_stream.cpp index 1daad7a59..97d19577f 100644 --- a/test/test_decimal32_fast_stream.cpp +++ b/test/test_decimal32_fast_stream.cpp @@ -113,6 +113,30 @@ void test_ostream() #ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS +void test_issue_1127_locales(const char* locale) +{ + try + { + const std::locale a(locale); + + std::stringstream out_double; + out_double.imbue(a); + out_double << 1122.89; + + constexpr decimal_fast32_t val4{ 112289, -2 }; + std::stringstream out_decimal; + out_decimal.imbue(a); + out_decimal << val4; + + BOOST_TEST_CSTR_EQ(out_decimal.str().c_str(), out_double.str().c_str()); + } + catch (...) + { + std::cerr << "Locale not installed. Skipping test." << std::endl; + return; + } +} + void test_locales() { const char buffer[] = "1,1897e+02"; @@ -153,6 +177,11 @@ int main() // Homebrew GCC does not support locales #if !(defined(__GNUC__) && __GNUC__ >= 5 && defined(__APPLE__)) && !defined(BOOST_DECIMAL_QEMU_TEST) && !defined(BOOST_DECIMAL_DISABLE_EXCEPTIONS) + #ifndef _MSC_VER + test_issue_1127_locales("en_US.UTF-8"); // . decimal, , thousands + test_issue_1127_locales("de_DE.UTF-8"); // , decimal, . thousands + test_issue_1127_locales("fr_FR.UTF-8"); // , decimal, . thousands + #endif test_locales(); #endif From e54265ac0875fafd48e123e2fca4b46de66ec51c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 13:52:40 +0200 Subject: [PATCH 390/967] Add test of internal mechanisms --- test/Jamfile | 1 + test/test_string_locale_conversion.cpp | 56 ++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) create mode 100644 test/test_string_locale_conversion.cpp diff --git a/test/Jamfile b/test/Jamfile index 918555fb8..b6b1dc02c 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -175,6 +175,7 @@ run test_sinh.cpp ; run test_snprintf.cpp ; run test_sqrt.cpp ; run test_string_construction.cpp ; +run test_string_locale_conversion.cpp ; run test_strtod.cpp ; run test_tan.cpp ; run test_tanh.cpp ; diff --git a/test/test_string_locale_conversion.cpp b/test/test_string_locale_conversion.cpp new file mode 100644 index 000000000..5de6a6fd4 --- /dev/null +++ b/test/test_string_locale_conversion.cpp @@ -0,0 +1,56 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#if !(defined(__GNUC__) && __GNUC__ >= 5 && defined(__APPLE__)) && !defined(BOOST_DECIMAL_QEMU_TEST) && !defined(BOOST_DECIMAL_DISABLE_EXCEPTIONS) && !defined(_MSC_VER) + +#include +#include +#include +#include +#include +#include + +using namespace boost::decimal::detail; + +void test_conversion_to_c_locate(const char* locale) +{ + try + { + const std::locale a(locale); + std::locale::global(a); + + std::stringstream out_double; + out_double.imbue(a); + out_double << 1122.89; + + char buffer[64] {}; + std::memcpy(buffer, out_double.str().c_str(), out_double.str().size()); + convert_string_to_c_locale(buffer); + + const auto res = "1122.89"; + BOOST_TEST_CSTR_EQ(buffer, res); + } + catch (...) + { + std::cerr << "Test not run" << std::endl; + } +} + +int main() +{ + test_conversion_to_c_locate("en_US.UTF-8"); // . decimal, , thousands + test_conversion_to_c_locate("de_DE.UTF-8"); // , decimal, . thousands + test_conversion_to_c_locate("fr_FR.UTF-8"); // , decimal, . thousands + + return boost::report_errors(); +} + +#else + +int main() +{ + return 0; +} + +#endif From c9b96ea53e173ba43d99fb00d8ca3105237c6fbd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 13:53:09 +0200 Subject: [PATCH 391/967] Fix handling of thousands seperators --- .../decimal/detail/locale_conversion.hpp | 49 ++++++++++++++++++- 1 file changed, 47 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index 490783d94..fbb9540bf 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -17,10 +17,55 @@ namespace detail { inline void convert_string_to_c_locale(char* buffer) noexcept { - const auto locale_decimal_point = *std::localeconv()->decimal_point; + const auto* lconv {std::localeconv()}; + const auto locale_decimal_point {*lconv->decimal_point}; + auto locale_thousands_sep {*lconv->thousands_sep}; + if (locale_thousands_sep == -30) + { + // Locales like french use a space, but thousands_sep does not give a space character + locale_thousands_sep = ' '; + } + const bool has_grouping {lconv->grouping && lconv->grouping[0] > 0}; + + // Remove thousands separator if it exists and grouping is enabled + if (has_grouping && locale_thousands_sep != '\0') + { + // Find the decimal point first to know where the integer part ends + const auto decimal_pos {std::strchr(buffer, static_cast(locale_decimal_point))}; + const auto int_end {decimal_pos ? decimal_pos : (buffer + std::strlen(buffer))}; + + // Find the start of the number to include skipping sign + auto start {buffer}; + if (*start == '-' || *start == '+') + { + ++start; + } + + // Only remove thousands separators from the integer part + auto read {start}; + auto write {start}; + + while (read < int_end) + { + const auto ch = *read; + if (ch != locale_thousands_sep) + { + *write++ = *read; + } + ++read; + } + + // Copy the rest of the string (decimal point and fractional part) + while (*read != '\0') + { + *write++ = *read++; + } + *write = '\0'; + } + if (locale_decimal_point != '.') { - auto p = std::strchr(buffer, static_cast(locale_decimal_point)); + const auto p {std::strchr(buffer, static_cast(locale_decimal_point))}; if (p != nullptr) { *p = '.'; From f6183462afe0bfe0b256cbfaeff716697baef3e7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 14:17:27 +0200 Subject: [PATCH 392/967] Add test converting C locale to local --- test/test_string_locale_conversion.cpp | 41 +++++++++++++++++++++++--- 1 file changed, 37 insertions(+), 4 deletions(-) diff --git a/test/test_string_locale_conversion.cpp b/test/test_string_locale_conversion.cpp index 5de6a6fd4..98bd520bf 100644 --- a/test/test_string_locale_conversion.cpp +++ b/test/test_string_locale_conversion.cpp @@ -13,7 +13,7 @@ using namespace boost::decimal::detail; -void test_conversion_to_c_locate(const char* locale) +void test_conversion_to_c_locale(const char* locale) { try { @@ -31,17 +31,50 @@ void test_conversion_to_c_locate(const char* locale) const auto res = "1122.89"; BOOST_TEST_CSTR_EQ(buffer, res); } + // LCOV_EXCL_START catch (...) { std::cerr << "Test not run" << std::endl; } + // LCOV_EXCL_STOP +} + +void test_conversion_from_c_locale(const char* locale, const char* res) +{ + try + { + const std::locale a(locale); + std::locale::global(a); + + const auto str = "1122.89"; + char buffer[64] {}; + std::memcpy(buffer, str, strlen(str)); + char buffer2[64] {}; + std::memcpy(buffer2, str, strlen(str)); + + convert_string_to_local_locale(buffer); + BOOST_TEST_CSTR_EQ(buffer, res); + + convert_pointer_pair_to_local_locale(buffer2, buffer2 + sizeof(buffer2)); + BOOST_TEST_CSTR_EQ(buffer2, res); + } + // LCOV_EXCL_START + catch (...) + { + std::cerr << "Test not run" << std::endl; + } + // LCOV_EXCL_STOP } int main() { - test_conversion_to_c_locate("en_US.UTF-8"); // . decimal, , thousands - test_conversion_to_c_locate("de_DE.UTF-8"); // , decimal, . thousands - test_conversion_to_c_locate("fr_FR.UTF-8"); // , decimal, . thousands + test_conversion_to_c_locale("en_US.UTF-8"); // . decimal, , thousands + test_conversion_to_c_locale("de_DE.UTF-8"); // , decimal, . thousands + test_conversion_to_c_locale("fr_FR.UTF-8"); // , decimal, thousands + + test_conversion_from_c_locale("en_US.UTF-8", "1,122.89"); + test_conversion_from_c_locale("de_DE.UTF-8", "1.122,89"); + test_conversion_from_c_locale("fr_FR.UTF-8", "1 122,89"); return boost::report_errors(); } From 09dbfedcd160efe02de9eedb5f839c51adacff55 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 14:17:33 +0200 Subject: [PATCH 393/967] Move to unified impl --- .../decimal/detail/locale_conversion.hpp | 41 +++++++++++++------ 1 file changed, 28 insertions(+), 13 deletions(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index fbb9540bf..a3c99181b 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -73,36 +73,51 @@ inline void convert_string_to_c_locale(char* buffer) noexcept } } -inline void convert_string_to_local_locale(char* buffer) noexcept +namespace impl { + +inline char* strchr(char* buffer, const int chr) { - const auto locale_decimal_point = *std::localeconv()->decimal_point; - if (locale_decimal_point != '.') + return std::strchr(buffer, chr); +} + +inline char* strchr(char* first, const char* last, const int chr) +{ + const auto ch {static_cast(chr)}; + + char* pos {nullptr}; + while (first != last) { - auto p = std::strchr(buffer, static_cast('.')); - if (p != nullptr) + if (*first == ch) { - *p = locale_decimal_point; + pos = first; + break; } + ++first; } + + return pos; } +} // namespace impl + inline void convert_pointer_pair_to_local_locale(char* first, const char* last) noexcept { const auto locale_decimal_point = *std::localeconv()->decimal_point; if (locale_decimal_point != '.') { - while (first != last) + auto p = impl::strchr(first, last, static_cast(locale_decimal_point)); + if (p != nullptr) { - if (*first == '.') - { - *first = locale_decimal_point; - } - - ++first; + *p = locale_decimal_point; } } } +inline void convert_string_to_local_locale(char* buffer) noexcept +{ + return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer)); +} + } //namespace detail } //namespace decimal } //namespace boost From 892f72daf7904981499cc90660f8d50bd41228f5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 15:16:49 +0200 Subject: [PATCH 394/967] Update locales available in CI --- .github/workflows/ci.yml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index cec72789f..997ec221f 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -389,6 +389,8 @@ jobs: sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT update sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y ${{join(matrix.install, ' ')}} locales libfmt-dev sudo locale-gen de_DE.UTF-8 + sudo locale-gen en_US.UTF-8 + sudo locale-gen fr_FR.UTF-8 sudo update-locale - name: Setup GCC Toolchain if: matrix.gcc_toolchain From c9aa41bb8bfc61d360e1534ee9ac27384d2a16de Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 15:17:02 +0200 Subject: [PATCH 395/967] Add conversion from C locale to local locale --- .../decimal/detail/locale_conversion.hpp | 84 ++++++++++++++----- 1 file changed, 61 insertions(+), 23 deletions(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index a3c99181b..61e37bfa7 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -73,42 +73,80 @@ inline void convert_string_to_c_locale(char* buffer) noexcept } } -namespace impl { - -inline char* strchr(char* buffer, const int chr) +inline void convert_pointer_pair_to_local_locale(char* first, char* last) noexcept { - return std::strchr(buffer, chr); -} + const auto* lconv {std::localeconv()}; + const auto locale_decimal_point {*lconv->decimal_point}; + auto locale_thousands_sep {*lconv->thousands_sep}; + if (locale_thousands_sep == -30) + { + locale_thousands_sep = ' '; + } + const bool has_grouping {lconv->grouping && lconv->grouping[0] > 0}; + const int grouping_size {has_grouping ? lconv->grouping[0] : 0}; -inline char* strchr(char* first, const char* last, const int chr) -{ - const auto ch {static_cast(chr)}; + // Find the start of the number (skip sign if present) + char* start = first; + if (start < last && (*start == '-' || *start == '+')) + { + ++start; + } - char* pos {nullptr}; - while (first != last) + // Find decimal point position + char* decimal_pos {nullptr}; + for (char* p = start; p < last; ++p) { - if (*first == ch) + if (*p == '.') { - pos = first; + decimal_pos = p; + *decimal_pos = locale_decimal_point; break; } - ++first; } - return pos; -} + const auto int_end {decimal_pos != nullptr ? decimal_pos : last}; + const auto int_digits {static_cast(int_end - start)}; -} // namespace impl + // Calculate how many separators we need + int num_separators {}; + if (has_grouping && locale_thousands_sep != '\0' && int_digits > 0) + { + if (int_digits > grouping_size) + { + num_separators = (int_digits - 1) / grouping_size; + } + } -inline void convert_pointer_pair_to_local_locale(char* first, const char* last) noexcept -{ - const auto locale_decimal_point = *std::localeconv()->decimal_point; - if (locale_decimal_point != '.') + // If we need to add separators, shift content and insert them + if (num_separators > 0) { - auto p = impl::strchr(first, last, static_cast(locale_decimal_point)); - if (p != nullptr) + const auto original_length {static_cast(last - first)}; + const auto new_length {original_length + num_separators}; + + // Shift everything after the integer part to make room + // Work backwards to avoid overwriting + auto old_pos {last - 1}; + auto new_pos {first + new_length - 1}; + + // Copy from end back to the end of integer part + while (old_pos >= int_end) { - *p = locale_decimal_point; + *new_pos-- = *old_pos--; + } + + int digit_count {}; + old_pos = int_end - 1; + + while (old_pos >= start) + { + *new_pos-- = *old_pos--; + ++digit_count; + + // Insert separator after every grouping_size digits (but not at the start) + if (digit_count % grouping_size == 0 && old_pos >= start) + { + *new_pos-- = locale_thousands_sep; + } } } } From 8eec415ec6e71cfa6c012988b4596c4a7be1074d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 15:24:19 +0200 Subject: [PATCH 396/967] Return the additional length used --- include/boost/decimal/cstdio.hpp | 5 +++-- include/boost/decimal/detail/locale_conversion.hpp | 6 ++++-- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/cstdio.hpp b/include/boost/decimal/cstdio.hpp index 79da4483d..f027dbd02 100644 --- a/include/boost/decimal/cstdio.hpp +++ b/include/boost/decimal/cstdio.hpp @@ -227,9 +227,10 @@ inline auto snprintf_impl(char* buffer, const std::size_t buf_size, const char* { detail::make_uppercase(buffer, r.ptr); } - convert_pointer_pair_to_local_locale(buffer, r.ptr); + *r.ptr = '\0'; + const auto offset {convert_pointer_pair_to_local_locale(buffer, buffer + buf_size)}; - buffer = r.ptr; + buffer = r.ptr + (offset == -1 ? 0 : offset); if (value_iter != values_list.end()) { diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index 61e37bfa7..73fb7dc56 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -73,7 +73,7 @@ inline void convert_string_to_c_locale(char* buffer) noexcept } } -inline void convert_pointer_pair_to_local_locale(char* first, char* last) noexcept +inline int convert_pointer_pair_to_local_locale(char* first, char* last) noexcept { const auto* lconv {std::localeconv()}; const auto locale_decimal_point {*lconv->decimal_point}; @@ -149,9 +149,11 @@ inline void convert_pointer_pair_to_local_locale(char* first, char* last) noexce } } } + + return num_separators; } -inline void convert_string_to_local_locale(char* buffer) noexcept +inline int convert_string_to_local_locale(char* buffer) noexcept { return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer)); } From 984e0eb203034d1a81700d4c95670cccf6e9d4d0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 15:47:06 +0200 Subject: [PATCH 397/967] Additional space is required for locale conversion --- include/boost/decimal/cstdio.hpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/cstdio.hpp b/include/boost/decimal/cstdio.hpp index f027dbd02..83b4c2fb7 100644 --- a/include/boost/decimal/cstdio.hpp +++ b/include/boost/decimal/cstdio.hpp @@ -277,7 +277,7 @@ inline auto fprintf(std::FILE* buffer, const char* format, const T... values) no int bytes {}; char char_buffer[1024]; - if (format_len + value_space <= 1024U) + if (format_len + value_space <= ((1024 * 2) / 3)) { bytes = detail::snprintf_impl(char_buffer, sizeof(char_buffer), format, values...); if (bytes) @@ -288,7 +288,8 @@ inline auto fprintf(std::FILE* buffer, const char* format, const T... values) no else { // LCOV_EXCL_START - std::unique_ptr longer_char_buffer(new(std::nothrow) char[format_len + value_space + 1]); + // Add 50% overage in case we need to do locale conversion + std::unique_ptr longer_char_buffer(new(std::nothrow) char[(3 * (format_len + value_space + 1)) / 2]); if (longer_char_buffer == nullptr) { errno = ENOMEM; From a5ee37069dd9d76e25142d380c727304d46deda2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 16:03:13 +0200 Subject: [PATCH 398/967] Use the facet provide locale rather than global --- include/boost/decimal/detail/io.hpp | 2 +- .../decimal/detail/locale_conversion.hpp | 27 ++++++++++++++----- 2 files changed, 21 insertions(+), 8 deletions(-) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index 73f06551c..a13b44c6d 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -171,7 +171,7 @@ auto operator<<(std::basic_ostream& os, const DecimalType& d) *r.ptr = '\0'; - detail::convert_string_to_local_locale(buffer); + detail::convert_string_to_local_locale(buffer, os.getloc()); BOOST_DECIMAL_IF_CONSTEXPR (!std::is_same::value) { diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index 73fb7dc56..f9d65b077 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -73,17 +73,18 @@ inline void convert_string_to_c_locale(char* buffer) noexcept } } -inline int convert_pointer_pair_to_local_locale(char* first, char* last) noexcept +inline int convert_pointer_pair_to_local_locale(char* first, char* last, const std::locale& loc) noexcept { - const auto* lconv {std::localeconv()}; - const auto locale_decimal_point {*lconv->decimal_point}; - auto locale_thousands_sep {*lconv->thousands_sep}; + const std::numpunct& np = std::use_facet>(loc); + + const auto locale_decimal_point {np.decimal_point()}; + auto locale_thousands_sep {np.thousands_sep()}; if (locale_thousands_sep == -30) { locale_thousands_sep = ' '; } - const bool has_grouping {lconv->grouping && lconv->grouping[0] > 0}; - const int grouping_size {has_grouping ? lconv->grouping[0] : 0}; + const bool has_grouping {!np.grouping().empty() && np.grouping()[0] > 0}; + const int grouping_size {has_grouping ? np.grouping()[0] : 0}; // Find the start of the number (skip sign if present) char* start = first; @@ -153,9 +154,21 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last) noexcep return num_separators; } +inline int convert_pointer_pair_to_local_locale(char* first, char* last) +{ + const auto loc {std::locale()}; + return convert_pointer_pair_to_local_locale(first, last, loc); +} + inline int convert_string_to_local_locale(char* buffer) noexcept { - return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer)); + const auto loc {std::locale()}; + return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer), loc); +} + +inline int convert_string_to_local_locale(char* buffer, const std::locale& loc) noexcept +{ + return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer), loc); } } //namespace detail From ff9ff7dc384e19956cd0f7f9861b09267975bf1a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 16:04:56 +0200 Subject: [PATCH 399/967] Convert converion to c locale to use C++ locale or C global --- include/boost/decimal/detail/io.hpp | 2 +- .../boost/decimal/detail/locale_conversion.hpp | 18 ++++++++++++------ 2 files changed, 13 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index a13b44c6d..a54db10f1 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -79,7 +79,7 @@ auto operator>>(std::basic_istream& is, DecimalType& d) std::memcpy(buffer, t_buffer.c_str(), t_buffer.size()); } - detail::convert_string_to_c_locale(buffer); + detail::convert_string_to_c_locale(buffer, is.getloc()); auto fmt {chars_format::general}; const auto flags {is.flags()}; diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index f9d65b077..5d2cbfa6b 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -15,17 +15,18 @@ namespace boost { namespace decimal { namespace detail { -inline void convert_string_to_c_locale(char* buffer) noexcept +inline void convert_string_to_c_locale(char* buffer, const std::locale& loc) noexcept { - const auto* lconv {std::localeconv()}; - const auto locale_decimal_point {*lconv->decimal_point}; - auto locale_thousands_sep {*lconv->thousands_sep}; + const std::numpunct& np = std::use_facet>(loc); + + const auto locale_decimal_point {np.decimal_point()}; + auto locale_thousands_sep {np.thousands_sep()}; if (locale_thousands_sep == -30) { - // Locales like french use a space, but thousands_sep does not give a space character locale_thousands_sep = ' '; } - const bool has_grouping {lconv->grouping && lconv->grouping[0] > 0}; + const bool has_grouping {!np.grouping().empty() && np.grouping()[0] > 0}; + const int grouping_size {has_grouping ? np.grouping()[0] : 0}; // Remove thousands separator if it exists and grouping is enabled if (has_grouping && locale_thousands_sep != '\0') @@ -73,6 +74,11 @@ inline void convert_string_to_c_locale(char* buffer) noexcept } } +inline void convert_string_to_c_locale(char* buffer) noexcept +{ + convert_string_to_c_locale(buffer, std::locale()); +} + inline int convert_pointer_pair_to_local_locale(char* first, char* last, const std::locale& loc) noexcept { const std::numpunct& np = std::use_facet>(loc); From 10461b63c5d90ddef77ef893aef6eae3e84ac256 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 16:24:46 +0200 Subject: [PATCH 400/967] Remove unused variable --- include/boost/decimal/detail/locale_conversion.hpp | 1 - 1 file changed, 1 deletion(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index 5d2cbfa6b..a34575b5d 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -26,7 +26,6 @@ inline void convert_string_to_c_locale(char* buffer, const std::locale& loc) noe locale_thousands_sep = ' '; } const bool has_grouping {!np.grouping().empty() && np.grouping()[0] > 0}; - const int grouping_size {has_grouping ? np.grouping()[0] : 0}; // Remove thousands separator if it exists and grouping is enabled if (has_grouping && locale_thousands_sep != '\0') From 287aa2baec2f8dfb5b84a09610be9090a02deb89 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 16:54:02 +0200 Subject: [PATCH 401/967] Fix value of last --- include/boost/decimal/cstdio.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/cstdio.hpp b/include/boost/decimal/cstdio.hpp index 83b4c2fb7..f5d2a9140 100644 --- a/include/boost/decimal/cstdio.hpp +++ b/include/boost/decimal/cstdio.hpp @@ -228,7 +228,7 @@ inline auto snprintf_impl(char* buffer, const std::size_t buf_size, const char* detail::make_uppercase(buffer, r.ptr); } *r.ptr = '\0'; - const auto offset {convert_pointer_pair_to_local_locale(buffer, buffer + buf_size)}; + const auto offset {convert_pointer_pair_to_local_locale(buffer, buffer + buf_size - byte_count)}; buffer = r.ptr + (offset == -1 ? 0 : offset); From 69ec031a3db4e62ffa4c377619b249a21c0bae84 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 16 Oct 2025 17:16:41 +0200 Subject: [PATCH 402/967] Find end of integer in the event there's no fractional part --- .../decimal/detail/locale_conversion.hpp | 20 ++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index a34575b5d..ddd94483a 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -110,7 +110,25 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last, const s } } - const auto int_end {decimal_pos != nullptr ? decimal_pos : last}; + // If there is no fractional part we still need to find where the end of the integer is + // We've already inserted a null terminator for ourselves + char* last_digit {start}; + if (decimal_pos == nullptr) + { + for (const char* p = start; p < last; ++p) + { + if (*p != '\0') + { + ++last_digit; + } + else + { + break; + } + } + } + + const auto int_end {decimal_pos != nullptr ? decimal_pos : last_digit}; const auto int_digits {static_cast(int_end - start)}; // Calculate how many separators we need From b9ef0ea4cb832b2c87fa3786004b0a43a8a3d395 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 10:17:42 +0200 Subject: [PATCH 403/967] Distinguish between end of value and end of container --- .../decimal/detail/locale_conversion.hpp | 62 +++++++++---------- 1 file changed, 28 insertions(+), 34 deletions(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index ddd94483a..b0f16aeca 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -98,9 +98,16 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last, const s ++start; } + // Find the actual end of the string + auto string_end {start}; + while (string_end < last && *string_end != '\0') + { + ++string_end; + } + // Find decimal point position char* decimal_pos {nullptr}; - for (char* p = start; p < last; ++p) + for (char* p = start; p < string_end; ++p) { if (*p == '.') { @@ -110,25 +117,8 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last, const s } } - // If there is no fractional part we still need to find where the end of the integer is - // We've already inserted a null terminator for ourselves - char* last_digit {start}; - if (decimal_pos == nullptr) - { - for (const char* p = start; p < last; ++p) - { - if (*p != '\0') - { - ++last_digit; - } - else - { - break; - } - } - } - - const auto int_end {decimal_pos != nullptr ? decimal_pos : last_digit}; + // Determine the end of the integer part + const auto int_end {decimal_pos != nullptr ? decimal_pos : string_end}; const auto int_digits {static_cast(int_end - start)}; // Calculate how many separators we need @@ -144,33 +134,43 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last, const s // If we need to add separators, shift content and insert them if (num_separators > 0) { - const auto original_length {static_cast(last - first)}; + const auto original_length {static_cast(string_end - first)}; const auto new_length {original_length + num_separators}; + // Check if we have enough space in the buffer + if (first + new_length >= last) + { + // Not enough space, return error indicator + return -1; + } + // Shift everything after the integer part to make room // Work backwards to avoid overwriting - auto old_pos {last - 1}; - auto new_pos {first + new_length - 1}; + auto old_pos {string_end}; + auto new_pos {first + new_length}; - // Copy from end back to the end of integer part + // Copy from end (including null terminator) back to the end of integer part while (old_pos >= int_end) { *new_pos-- = *old_pos--; } - int digit_count {}; + // Now insert the integer digits with separators + // Count digits from right to left (from decimal point backwards) old_pos = int_end - 1; + int digits_from_right {1}; while (old_pos >= start) { *new_pos-- = *old_pos--; - ++digit_count; - // Insert separator after every grouping_size digits (but not at the start) - if (digit_count % grouping_size == 0 && old_pos >= start) + // Insert separator after every grouping_size digits from the right + // but not after the leftmost digit + if (old_pos >= start && digits_from_right % grouping_size == 0) { *new_pos-- = locale_thousands_sep; } + ++digits_from_right; } } @@ -183,12 +183,6 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last) return convert_pointer_pair_to_local_locale(first, last, loc); } -inline int convert_string_to_local_locale(char* buffer) noexcept -{ - const auto loc {std::locale()}; - return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer), loc); -} - inline int convert_string_to_local_locale(char* buffer, const std::locale& loc) noexcept { return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer), loc); From abdc863e226bc9c87e0898935c4717989fdaf833 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 10:19:37 +0200 Subject: [PATCH 404/967] Remove overload without end pointer --- include/boost/decimal/detail/io.hpp | 3 +-- include/boost/decimal/detail/locale_conversion.hpp | 5 ----- test/test_string_locale_conversion.cpp | 3 --- 3 files changed, 1 insertion(+), 10 deletions(-) diff --git a/include/boost/decimal/detail/io.hpp b/include/boost/decimal/detail/io.hpp index a54db10f1..9500ef462 100644 --- a/include/boost/decimal/detail/io.hpp +++ b/include/boost/decimal/detail/io.hpp @@ -170,8 +170,7 @@ auto operator<<(std::basic_ostream& os, const DecimalType& d) } *r.ptr = '\0'; - - detail::convert_string_to_local_locale(buffer, os.getloc()); + detail::convert_pointer_pair_to_local_locale(buffer, buffer + sizeof(buffer), os.getloc()); BOOST_DECIMAL_IF_CONSTEXPR (!std::is_same::value) { diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index b0f16aeca..fe4f357f1 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -183,11 +183,6 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last) return convert_pointer_pair_to_local_locale(first, last, loc); } -inline int convert_string_to_local_locale(char* buffer, const std::locale& loc) noexcept -{ - return convert_pointer_pair_to_local_locale(buffer, buffer + std::strlen(buffer), loc); -} - } //namespace detail } //namespace decimal } //namespace boost diff --git a/test/test_string_locale_conversion.cpp b/test/test_string_locale_conversion.cpp index 98bd520bf..0226af9d7 100644 --- a/test/test_string_locale_conversion.cpp +++ b/test/test_string_locale_conversion.cpp @@ -52,9 +52,6 @@ void test_conversion_from_c_locale(const char* locale, const char* res) char buffer2[64] {}; std::memcpy(buffer2, str, strlen(str)); - convert_string_to_local_locale(buffer); - BOOST_TEST_CSTR_EQ(buffer, res); - convert_pointer_pair_to_local_locale(buffer2, buffer2 + sizeof(buffer2)); BOOST_TEST_CSTR_EQ(buffer2, res); } From 58a344039c3b49c51999ef019ad3621bbebbf7ca Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 11:36:10 +0200 Subject: [PATCH 405/967] Change values for supported locales in CI --- test/test_decimal32_fast_stream.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/test/test_decimal32_fast_stream.cpp b/test/test_decimal32_fast_stream.cpp index 97d19577f..cd92cda52 100644 --- a/test/test_decimal32_fast_stream.cpp +++ b/test/test_decimal32_fast_stream.cpp @@ -176,12 +176,14 @@ int main() test_ostream(); // Homebrew GCC does not support locales - #if !(defined(__GNUC__) && __GNUC__ >= 5 && defined(__APPLE__)) && !defined(BOOST_DECIMAL_QEMU_TEST) && !defined(BOOST_DECIMAL_DISABLE_EXCEPTIONS) + #if !(defined(__GNUC__) && __GNUC__ >= 8 && defined(__APPLE__)) && !defined(BOOST_DECIMAL_QEMU_TEST) && !defined(BOOST_DECIMAL_DISABLE_EXCEPTIONS) #ifndef _MSC_VER test_issue_1127_locales("en_US.UTF-8"); // . decimal, , thousands test_issue_1127_locales("de_DE.UTF-8"); // , decimal, . thousands + #if !defined(__clang__) || __clang_major__ > 8 test_issue_1127_locales("fr_FR.UTF-8"); // , decimal, . thousands #endif + #endif test_locales(); #endif From 2eecbc43b543cb17941d298a7b623a47b3dd848a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 11:48:55 +0200 Subject: [PATCH 406/967] Workaround for older apples --- test/test_string_locale_conversion.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/test/test_string_locale_conversion.cpp b/test/test_string_locale_conversion.cpp index 0226af9d7..d098a9546 100644 --- a/test/test_string_locale_conversion.cpp +++ b/test/test_string_locale_conversion.cpp @@ -70,8 +70,11 @@ int main() test_conversion_to_c_locale("fr_FR.UTF-8"); // , decimal, thousands test_conversion_from_c_locale("en_US.UTF-8", "1,122.89"); + + #if !defined(__APPLE__) || (defined(__APPLE__) && defined(__clang__) && __clang_major__ > 15) test_conversion_from_c_locale("de_DE.UTF-8", "1.122,89"); test_conversion_from_c_locale("fr_FR.UTF-8", "1 122,89"); + #endif return boost::report_errors(); } From 57426c6aa85bdfbe19cb848d708e7362a93c250e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 10:24:23 +0200 Subject: [PATCH 407/967] Fix CI in additional environments --- test/test_string_locale_conversion.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/test/test_string_locale_conversion.cpp b/test/test_string_locale_conversion.cpp index d098a9546..6c83d1a77 100644 --- a/test/test_string_locale_conversion.cpp +++ b/test/test_string_locale_conversion.cpp @@ -2,6 +2,8 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include + #if !(defined(__GNUC__) && __GNUC__ >= 5 && defined(__APPLE__)) && !defined(BOOST_DECIMAL_QEMU_TEST) && !defined(BOOST_DECIMAL_DISABLE_EXCEPTIONS) && !defined(_MSC_VER) #include @@ -67,7 +69,9 @@ int main() { test_conversion_to_c_locale("en_US.UTF-8"); // . decimal, , thousands test_conversion_to_c_locale("de_DE.UTF-8"); // , decimal, . thousands + #if (defined(__clang__) && __clang_major__ > 9) || (defined(__GNUC__) && __GNUC__ > 9) test_conversion_to_c_locale("fr_FR.UTF-8"); // , decimal, thousands + #endif test_conversion_from_c_locale("en_US.UTF-8", "1,122.89"); From 80e59e6e3a75d715010d42668fab8e21df277919 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 13:30:03 +0200 Subject: [PATCH 408/967] Add quantum preservation enum class for to_chars usage --- .../detail/quantum_preservation_format.hpp | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 include/boost/decimal/detail/quantum_preservation_format.hpp diff --git a/include/boost/decimal/detail/quantum_preservation_format.hpp b/include/boost/decimal/detail/quantum_preservation_format.hpp new file mode 100644 index 000000000..626a769bc --- /dev/null +++ b/include/boost/decimal/detail/quantum_preservation_format.hpp @@ -0,0 +1,29 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_COHORT_FORMAT_HPP +#define BOOST_DECIMAL_COHORT_FORMAT_HPP + +#include + +namespace boost { +namespace decimal { + +// IEEE 754 allows languages to decide how to allow cohorts to be printed. +// Precision and cohort preservation are mutually exclusive, +// so we offer it as an option through charconv. +// See Section 5.12.2 +// +// on - preserves cohort information +// off - returns the same as to_chars with specified format and unspecified precision +BOOST_DECIMAL_EXPORT enum class quantum_preservation : unsigned +{ + off = 0, + on = 1 +}; + +} //namespace decimal +} //namespace boost + +#endif // BOOST_DECIMAL_COHORT_FORMAT_HPP From 2c71d82a0336021537087be92fc86788ed614e8a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 13:43:30 +0200 Subject: [PATCH 409/967] Add outline of new method --- include/boost/decimal/charconv.hpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 0a6bd60d2..00a588883 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -26,6 +26,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -1109,6 +1110,12 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp return to_chars_integer_impl(first, last, static_cast(abs_exp)); } +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result +{ + return {last, std::errc()}; +} + #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable: 4702) // Unreachable code @@ -1181,6 +1188,21 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v return to_chars_scientific_impl(first, last, value, fmt, local_precision); // LCOV_EXCL_LINE } +template +constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const quantum_preservation method) noexcept -> to_chars_result +{ + if (method == quantum_preservation::off) + { + return to_chars_impl(first, last, value, fmt); + } + + switch (fmt) + { + default: + return to_chars_cohort_preserving_scientific(first, last, value); + } +} + #ifdef _MSC_VER # pragma warning(pop) #endif From c1d3d307ae61a04551716796ebe401be1cc8f5c3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 15:18:12 +0200 Subject: [PATCH 410/967] Make new cohort preserving a friend function by necessity --- include/boost/decimal/decimal32_t.hpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 54771c6d2..a000fd526 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -102,6 +102,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; @@ -215,6 +218,9 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal32_t(const char* str, std::size_t len); #endif From a83fe237dc4d137bf5ff22ad01082147c9537555 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 15:33:28 +0200 Subject: [PATCH 411/967] Begin adding test set --- test/Jamfile | 1 + test/test_to_chars_quantum.cpp | 48 ++++++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) create mode 100644 test/test_to_chars_quantum.cpp diff --git a/test/Jamfile b/test/Jamfile index 918555fb8..4e3c835e8 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -180,6 +180,7 @@ run test_tan.cpp ; run test_tanh.cpp ; run test_tgamma.cpp ; run test_to_chars.cpp ; +run test_to_chars_quantum.cpp ; run test_to_string.cpp ; run test_zeta.cpp ; diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp new file mode 100644 index 000000000..c87535674 --- /dev/null +++ b/test/test_to_chars_quantum.cpp @@ -0,0 +1,48 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include +#include + +using namespace boost::decimal; + +template +void test_to_chars_scientific() +{ + const std::array decimals = { + T{3, 2}, + T{30, 1}, + T{300, 0}, + T{3000, -1}, + T{30000, -2}, + T{300000, -3}, + T{3000000, -4}, + }; + + const std::array strings = { + "3e+02", + "3.0e+02", + "3.00e+02", + "3.000e+02", + "3.0000e+02", + "3.00000e+02", + "3.000000e+02", + }; + + for (std::size_t i {}; i < decimals.size(); ++i) + { + char buffer[64] {}; + const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::scientific, quantum_preservation::on)}; + BOOST_TEST(r); + BOOST_TEST_CSTR_EQ(buffer, strings[i]); + } +} + +int main() +{ + test_to_chars_scientific(); + + return boost::report_errors(); +} From 6608d250b74df8e3aa4b2d364e8b2f8352732be1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 15:35:25 +0200 Subject: [PATCH 412/967] Add first cut of to_chars scientific format that preserves cohorts --- include/boost/decimal/charconv.hpp | 70 +++++++++++++++++++++++++++++- 1 file changed, 69 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 00a588883..a31d779ba 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1113,7 +1113,62 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp template constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result { - return {last, std::errc()}; + using unsigned_integer = typename TargetDecimalType::significand_type; + + const auto fp = fpclassify(value); + if (!(fp == FP_NORMAL || fp == FP_SUBNORMAL)) + { + // Cohorts are irrelevant for non-finite values + return to_chars_nonfinite(first, last, value, fp, chars_format::scientific, -1); + } + + // First we print the significand of the number by decoding the value, + // and using our existing to_chars for integers + // + // We possibly offset the to_chars by one in the event that we know we will have a fraction + const auto components {value.to_components()}; + const auto significand {components.sig}; + auto exponent {static_cast(components.exp)}; + + if (components.sign) + { + *first++ = '-'; + } + + const bool fractional_piece {significand > 10}; + const auto r {to_chars_integer_impl(first + static_cast(fractional_piece), last, significand)}; + + if (BOOST_DECIMAL_UNLIKELY(!r)) + { + return r; // LCOV_EXCL_LINE + } + + // If there is more than one digit in the significand then we are going to need to: + // First: insert a decimal point + // Second: figure out how many decimal points we are going to have to adjust the exponent accordingly + if (fractional_piece) + { + *first = *(first + 1); + *(first + 1) = '.'; + + const auto offset {num_digits(significand) - 1}; + exponent += offset; + } + + // Insert the exponent characters ensuring that there are always at least two digits after the "e", + // e.g. e+07 not e+7 + first = r.ptr; + *first++ = 'e'; + const bool negative_exp {exponent < 0}; + *first++ = negative_exp ? '-' : '+'; + + const auto abs_exp { static_cast(negative_exp ? -exponent : exponent) }; + if (abs_exp < 10U) + { + *first++ = '0'; + } + + return to_chars_integer_impl(first, last, abs_exp); } #ifdef _MSC_VER @@ -1191,11 +1246,18 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v template constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const quantum_preservation method) noexcept -> to_chars_result { + // No quantum preservation is the same thing as regular to_chars if (method == quantum_preservation::off) { return to_chars_impl(first, last, value, fmt); } + // Sanity check our bounds + if (BOOST_DECIMAL_UNLIKELY(first >= last)) + { + return {last, std::errc::invalid_argument}; + } + switch (fmt) { default: @@ -1232,6 +1294,12 @@ constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, return detail::to_chars_impl(first, last, value, fmt, precision); } +BOOST_DECIMAL_EXPORT template +constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt, quantum_preservation method) noexcept -> to_chars_result +{ + return detail::to_chars_impl(first, last, value, fmt, method); +} + #ifdef BOOST_DECIMAL_HAS_STD_CHARCONV BOOST_DECIMAL_EXPORT template From d752b2195a00dce5c8d62f6dd03f53777253b4f6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 15:43:52 +0200 Subject: [PATCH 413/967] Add assertion for fast types --- include/boost/decimal/charconv.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index a31d779ba..8c0066e15 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1297,6 +1297,7 @@ constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, BOOST_DECIMAL_EXPORT template constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt, quantum_preservation method) noexcept -> to_chars_result { + static_assert(detail::is_ieee_type_v, "Fast types are automatically normalized, so they have no concept of quantum preservation"); return detail::to_chars_impl(first, last, value, fmt, method); } From eed38f63a8675251a61960c0801b53dc2c8e913f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 16:08:09 +0200 Subject: [PATCH 414/967] Improve const correctness --- include/boost/decimal/charconv.hpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 8c0066e15..ecb20a01d 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1278,13 +1278,13 @@ constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value) } BOOST_DECIMAL_EXPORT template -constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result +constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, const chars_format fmt) noexcept -> to_chars_result { return detail::to_chars_impl(first, last, value, fmt); } BOOST_DECIMAL_EXPORT template -constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt, int precision) noexcept -> to_chars_result +constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, int precision) noexcept -> to_chars_result { if (precision < 0) { @@ -1295,7 +1295,7 @@ constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, } BOOST_DECIMAL_EXPORT template -constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, chars_format fmt, quantum_preservation method) noexcept -> to_chars_result +constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const quantum_preservation method) noexcept -> to_chars_result { static_assert(detail::is_ieee_type_v, "Fast types are automatically normalized, so they have no concept of quantum preservation"); return detail::to_chars_impl(first, last, value, fmt, method); From d7f895a681cf6c12c2c964018e272a0abbca13fe Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 16:10:13 +0200 Subject: [PATCH 415/967] Make friends with other classes --- include/boost/decimal/decimal128_t.hpp | 6 ++++++ include/boost/decimal/decimal64_t.hpp | 6 ++++++ test/test_to_chars_quantum.cpp | 2 ++ 3 files changed, 14 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index e3fc65f34..d9f8d5380 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -98,6 +98,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + } //namespace detail BOOST_DECIMAL_EXPORT class decimal128_t final @@ -205,6 +208,9 @@ BOOST_DECIMAL_EXPORT class decimal128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal128_t(const char* str, std::size_t len); #endif diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 4bd7f2e78..35962a50e 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -101,6 +101,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; @@ -220,6 +223,9 @@ BOOST_DECIMAL_EXPORT class decimal64_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp index c87535674..47fddbe5b 100644 --- a/test/test_to_chars_quantum.cpp +++ b/test/test_to_chars_quantum.cpp @@ -43,6 +43,8 @@ void test_to_chars_scientific() int main() { test_to_chars_scientific(); + test_to_chars_scientific(); + test_to_chars_scientific(); return boost::report_errors(); } From eea70b447773077665704a14e7f41d0d0d155529 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 16:10:53 +0200 Subject: [PATCH 416/967] Fix sign-compare error --- include/boost/decimal/charconv.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index ecb20a01d..333db9840 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1135,7 +1135,7 @@ constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, co *first++ = '-'; } - const bool fractional_piece {significand > 10}; + const bool fractional_piece {significand > 10U}; const auto r {to_chars_integer_impl(first + static_cast(fractional_piece), last, significand)}; if (BOOST_DECIMAL_UNLIKELY(!r)) From 603bfdc2d376ab09d42f0c046830591c677de928 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 16:29:44 +0200 Subject: [PATCH 417/967] Add test that non-preserved quantum returns the same as regular sci --- test/test_to_chars_quantum.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp index 47fddbe5b..3cfc1da54 100644 --- a/test/test_to_chars_quantum.cpp +++ b/test/test_to_chars_quantum.cpp @@ -38,6 +38,19 @@ void test_to_chars_scientific() BOOST_TEST(r); BOOST_TEST_CSTR_EQ(buffer, strings[i]); } + + for (std::size_t i {}; i < decimals.size(); ++i) + { + char quantum_buffer[64] {}; + const auto r_quantum {to_chars(quantum_buffer, quantum_buffer + sizeof(quantum_buffer), decimals[i], chars_format::scientific, quantum_preservation::off)}; + BOOST_TEST(r_quantum); + + char buffer[64] {}; + const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::scientific)}; + BOOST_TEST(r); + + BOOST_TEST_CSTR_EQ(quantum_buffer, buffer); + } } int main() From 3286477223e15fb5e1520ab1cc25266329497620 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 16:33:09 +0200 Subject: [PATCH 418/967] Test known result and add null term --- test/test_to_chars_quantum.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp index 3cfc1da54..591f4c769 100644 --- a/test/test_to_chars_quantum.cpp +++ b/test/test_to_chars_quantum.cpp @@ -36,6 +36,8 @@ void test_to_chars_scientific() char buffer[64] {}; const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::scientific, quantum_preservation::on)}; BOOST_TEST(r); + *r.ptr = '\0'; + BOOST_TEST_CSTR_EQ(buffer, strings[i]); } @@ -44,12 +46,15 @@ void test_to_chars_scientific() char quantum_buffer[64] {}; const auto r_quantum {to_chars(quantum_buffer, quantum_buffer + sizeof(quantum_buffer), decimals[i], chars_format::scientific, quantum_preservation::off)}; BOOST_TEST(r_quantum); + *r_quantum.ptr = '\0'; char buffer[64] {}; const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::scientific)}; BOOST_TEST(r); + *r.ptr = '\0'; BOOST_TEST_CSTR_EQ(quantum_buffer, buffer); + BOOST_TEST_CSTR_EQ(quantum_buffer, strings[0]); } } From b9353ef4afadf346d12b151b1f98823ad07d9eed Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 17 Oct 2025 16:47:13 +0200 Subject: [PATCH 419/967] Add dummy check of equivalency --- test/test_to_chars_quantum.cpp | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp index 591f4c769..4b2c3c61e 100644 --- a/test/test_to_chars_quantum.cpp +++ b/test/test_to_chars_quantum.cpp @@ -21,6 +21,14 @@ void test_to_chars_scientific() T{3000000, -4}, }; + for (std::size_t i {}; i < decimals.size(); ++i) + { + for (std::size_t j {}; j < decimals.size(); ++j) + { + BOOST_TEST_EQ(decimals[i], decimals[j]); + } + } + const std::array strings = { "3e+02", "3.0e+02", @@ -37,7 +45,7 @@ void test_to_chars_scientific() const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::scientific, quantum_preservation::on)}; BOOST_TEST(r); *r.ptr = '\0'; - + BOOST_TEST_CSTR_EQ(buffer, strings[i]); } From 087823aa51f73c292cae8d516a0d7908f74130f9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 11:27:16 +0200 Subject: [PATCH 420/967] Simplify test harness and add test with exponents --- test/test_to_chars_quantum.cpp | 74 ++++++++++++++++++++++------------ 1 file changed, 49 insertions(+), 25 deletions(-) diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp index 4b2c3c61e..a25bbbffe 100644 --- a/test/test_to_chars_quantum.cpp +++ b/test/test_to_chars_quantum.cpp @@ -8,19 +8,9 @@ using namespace boost::decimal; -template -void test_to_chars_scientific() +template +void test_to_chars_scientific(const ResultsType& decimals, const StringsType& strings) { - const std::array decimals = { - T{3, 2}, - T{30, 1}, - T{300, 0}, - T{3000, -1}, - T{30000, -2}, - T{300000, -3}, - T{3000000, -4}, - }; - for (std::size_t i {}; i < decimals.size(); ++i) { for (std::size_t j {}; j < decimals.size(); ++j) @@ -29,16 +19,6 @@ void test_to_chars_scientific() } } - const std::array strings = { - "3e+02", - "3.0e+02", - "3.00e+02", - "3.000e+02", - "3.0000e+02", - "3.00000e+02", - "3.000000e+02", - }; - for (std::size_t i {}; i < decimals.size(); ++i) { char buffer[64] {}; @@ -66,11 +46,55 @@ void test_to_chars_scientific() } } +template +const std::array decimals = { + T{3, 2}, + T{30, 1}, + T{300, 0}, + T{3000, -1}, + T{30000, -2}, + T{300000, -3}, + T{3000000, -4}, +}; + +constexpr std::array strings = { + "3e+02", + "3.0e+02", + "3.00e+02", + "3.000e+02", + "3.0000e+02", + "3.00000e+02", + "3.000000e+02", +}; + +template +const std::array decimals_with_exp = { + T {42, 50}, + T {420, 49}, + T {4200, 48}, + T {42000, 47}, + T {420000, 46}, + T {4200000, 45} +}; + +constexpr std::array decimals_with_exp_strings = { + "4.2e+51", + "4.20e+51", + "4.200e+51", + "4.2000e+51", + "4.20000e+51", + "4.200000e+51", +}; + int main() { - test_to_chars_scientific(); - test_to_chars_scientific(); - test_to_chars_scientific(); + test_to_chars_scientific(decimals, strings); + test_to_chars_scientific(decimals, strings); + test_to_chars_scientific(decimals, strings); + + test_to_chars_scientific(decimals_with_exp, decimals_with_exp_strings); + test_to_chars_scientific(decimals_with_exp, decimals_with_exp_strings); + test_to_chars_scientific(decimals_with_exp, decimals_with_exp_strings); return boost::report_errors(); } From 15f7232c15a8f6dd7a9af2aa57430bebd0264083 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 11:57:15 +0200 Subject: [PATCH 421/967] Ignore type-limits warning --- include/boost/decimal/detail/locale_conversion.hpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index fe4f357f1..0e5b7e72c 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -15,6 +15,12 @@ namespace boost { namespace decimal { namespace detail { +// GCC-9 issues an erroneous warning for char == -30 being outside of type limits +#if defined(__GNUC__) && __GNUC__ == 9 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wtype-limits" +#endif + inline void convert_string_to_c_locale(char* buffer, const std::locale& loc) noexcept { const std::numpunct& np = std::use_facet>(loc); @@ -177,6 +183,10 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last, const s return num_separators; } +#if defined(__GNUC__) && __GNUC__ == 9 +# pragma GCC diagnostic pop +#endif + inline int convert_pointer_pair_to_local_locale(char* first, char* last) { const auto loc {std::locale()}; From bf5f6a27a16851606e3a2340beb23540cb6da5a8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 12:04:35 +0200 Subject: [PATCH 422/967] Test negative values with negative exponents --- test/test_to_chars_quantum.cpp | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp index a25bbbffe..c830cccf5 100644 --- a/test/test_to_chars_quantum.cpp +++ b/test/test_to_chars_quantum.cpp @@ -86,6 +86,23 @@ constexpr std::array decimals_with_exp_strings = { "4.200000e+51", }; +template +const std::array negative_values = { + T {-321, -49}, + T {-3210, -50}, + T {-32100, -51}, + T {-321000, -52}, + T {-3210000, -53} +}; + +constexpr std::array negative_values_strings = { + "-3.21e-47", + "-3.210e-47", + "-3.2100e-47", + "-3.21000e-47", + "-3.210000e-47" +}; + int main() { test_to_chars_scientific(decimals, strings); @@ -96,5 +113,9 @@ int main() test_to_chars_scientific(decimals_with_exp, decimals_with_exp_strings); test_to_chars_scientific(decimals_with_exp, decimals_with_exp_strings); + test_to_chars_scientific(negative_values, negative_values_strings); + test_to_chars_scientific(negative_values, negative_values_strings); + test_to_chars_scientific(negative_values, negative_values_strings); + return boost::report_errors(); } From 741ad4e310ca46cf24fb3280c04037402662daa9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 13:49:27 +0200 Subject: [PATCH 423/967] Workaround for more french locale issues with old toolchains --- test/test_decimal32_fast_stream.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_decimal32_fast_stream.cpp b/test/test_decimal32_fast_stream.cpp index cd92cda52..ccae5fc0e 100644 --- a/test/test_decimal32_fast_stream.cpp +++ b/test/test_decimal32_fast_stream.cpp @@ -180,7 +180,7 @@ int main() #ifndef _MSC_VER test_issue_1127_locales("en_US.UTF-8"); // . decimal, , thousands test_issue_1127_locales("de_DE.UTF-8"); // , decimal, . thousands - #if !defined(__clang__) || __clang_major__ > 8 + #if (defined(__clang__) && __clang_major__ > 9) || (defined(__GNUC__) && __GNUC__ > 9) test_issue_1127_locales("fr_FR.UTF-8"); // , decimal, . thousands #endif #endif From dcb1ef86359aeb1c3e6790b280c19c574e300557 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 16:01:07 +0200 Subject: [PATCH 424/967] Change affected GCC versions for PPC --- include/boost/decimal/detail/locale_conversion.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index 0e5b7e72c..8c567ac4d 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -16,7 +16,7 @@ namespace decimal { namespace detail { // GCC-9 issues an erroneous warning for char == -30 being outside of type limits -#if defined(__GNUC__) && __GNUC__ == 9 +#if defined(__GNUC__) && __GNUC__ >= 9 # pragma GCC diagnostic push # pragma GCC diagnostic ignored "-Wtype-limits" #endif From bbf92c5e2fac6d558275af1d390d1656b2166efb Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 21 Oct 2025 16:24:06 +0200 Subject: [PATCH 425/967] Ignore MSVC warning --- include/boost/decimal/charconv.hpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 333db9840..30ba08132 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1243,6 +1243,12 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v return to_chars_scientific_impl(first, last, value, fmt, local_precision); // LCOV_EXCL_LINE } +// TODO(mborland): Remove once other modes are inplace +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable: 4065) +#endif + template constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const quantum_preservation method) noexcept -> to_chars_result { From 8124648add7144f4b113f89be1bf63e76ad764fc Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 11:18:59 +0200 Subject: [PATCH 426/967] Refactor quantum preservation to be a chars_format option --- include/boost/decimal/charconv.hpp | 54 +++++-------------- include/boost/decimal/detail/chars_format.hpp | 1 + .../detail/quantum_preservation_format.hpp | 29 ---------- test/test_to_chars_quantum.cpp | 18 +------ 4 files changed, 16 insertions(+), 86 deletions(-) delete mode 100644 include/boost/decimal/detail/quantum_preservation_format.hpp diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 30ba08132..464a23cc5 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -26,7 +26,6 @@ #include #include #include -#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -1212,6 +1211,20 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v return to_chars_scientific_impl(first, last, value, fmt); case chars_format::hex: return to_chars_hex_impl(first, last, value); + case chars_format::cohort_preserving_scientific: + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_fast_type_v) + { + // Fast types have no concept of cohorts + return {last, std::errc::invalid_argument}; + } + + if (local_precision != -1) + { + // Precision and cohort preservation are mutually exclusive options + return {last, std::errc::invalid_argument}; + } + + return to_chars_cohort_preserving_scientific(first, last, value); // LCOV_EXCL_START default: BOOST_DECIMAL_UNREACHABLE; @@ -1243,38 +1256,6 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v return to_chars_scientific_impl(first, last, value, fmt, local_precision); // LCOV_EXCL_LINE } -// TODO(mborland): Remove once other modes are inplace -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable: 4065) -#endif - -template -constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const quantum_preservation method) noexcept -> to_chars_result -{ - // No quantum preservation is the same thing as regular to_chars - if (method == quantum_preservation::off) - { - return to_chars_impl(first, last, value, fmt); - } - - // Sanity check our bounds - if (BOOST_DECIMAL_UNLIKELY(first >= last)) - { - return {last, std::errc::invalid_argument}; - } - - switch (fmt) - { - default: - return to_chars_cohort_preserving_scientific(first, last, value); - } -} - -#ifdef _MSC_VER -# pragma warning(pop) -#endif - } //namespace detail BOOST_DECIMAL_EXPORT template @@ -1300,13 +1281,6 @@ constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, return detail::to_chars_impl(first, last, value, fmt, precision); } -BOOST_DECIMAL_EXPORT template -constexpr auto to_chars(char* first, char* last, const TargetDecimalType& value, const chars_format fmt, const quantum_preservation method) noexcept -> to_chars_result -{ - static_assert(detail::is_ieee_type_v, "Fast types are automatically normalized, so they have no concept of quantum preservation"); - return detail::to_chars_impl(first, last, value, fmt, method); -} - #ifdef BOOST_DECIMAL_HAS_STD_CHARCONV BOOST_DECIMAL_EXPORT template diff --git a/include/boost/decimal/detail/chars_format.hpp b/include/boost/decimal/detail/chars_format.hpp index d32102096..d85f29d92 100644 --- a/include/boost/decimal/detail/chars_format.hpp +++ b/include/boost/decimal/detail/chars_format.hpp @@ -17,6 +17,7 @@ BOOST_DECIMAL_EXPORT enum class chars_format : unsigned scientific = 1 << 0, fixed = 1 << 1, hex = 1 << 2, + cohort_preserving_scientific = 1 << 3, general = fixed | scientific }; diff --git a/include/boost/decimal/detail/quantum_preservation_format.hpp b/include/boost/decimal/detail/quantum_preservation_format.hpp deleted file mode 100644 index 626a769bc..000000000 --- a/include/boost/decimal/detail/quantum_preservation_format.hpp +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2025 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_COHORT_FORMAT_HPP -#define BOOST_DECIMAL_COHORT_FORMAT_HPP - -#include - -namespace boost { -namespace decimal { - -// IEEE 754 allows languages to decide how to allow cohorts to be printed. -// Precision and cohort preservation are mutually exclusive, -// so we offer it as an option through charconv. -// See Section 5.12.2 -// -// on - preserves cohort information -// off - returns the same as to_chars with specified format and unspecified precision -BOOST_DECIMAL_EXPORT enum class quantum_preservation : unsigned -{ - off = 0, - on = 1 -}; - -} //namespace decimal -} //namespace boost - -#endif // BOOST_DECIMAL_COHORT_FORMAT_HPP diff --git a/test/test_to_chars_quantum.cpp b/test/test_to_chars_quantum.cpp index c830cccf5..731cb3af9 100644 --- a/test/test_to_chars_quantum.cpp +++ b/test/test_to_chars_quantum.cpp @@ -22,28 +22,12 @@ void test_to_chars_scientific(const ResultsType& decimals, const StringsType& st for (std::size_t i {}; i < decimals.size(); ++i) { char buffer[64] {}; - const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::scientific, quantum_preservation::on)}; + const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::cohort_preserving_scientific)}; BOOST_TEST(r); *r.ptr = '\0'; BOOST_TEST_CSTR_EQ(buffer, strings[i]); } - - for (std::size_t i {}; i < decimals.size(); ++i) - { - char quantum_buffer[64] {}; - const auto r_quantum {to_chars(quantum_buffer, quantum_buffer + sizeof(quantum_buffer), decimals[i], chars_format::scientific, quantum_preservation::off)}; - BOOST_TEST(r_quantum); - *r_quantum.ptr = '\0'; - - char buffer[64] {}; - const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::scientific)}; - BOOST_TEST(r); - *r.ptr = '\0'; - - BOOST_TEST_CSTR_EQ(quantum_buffer, buffer); - BOOST_TEST_CSTR_EQ(quantum_buffer, strings[0]); - } } template From 6ede201cb276d9842b887d6fe02ae019ec9ed1b4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 11:26:45 +0200 Subject: [PATCH 427/967] Change signature to avoid making fast type friends --- include/boost/decimal/charconv.hpp | 12 ++++++++++-- include/boost/decimal/decimal128_t.hpp | 12 +++++++----- include/boost/decimal/decimal32_t.hpp | 10 ++++++---- include/boost/decimal/decimal64_t.hpp | 10 ++++++---- 4 files changed, 29 insertions(+), 15 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 464a23cc5..1f30f2a3c 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1109,8 +1109,9 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp return to_chars_integer_impl(first, last, static_cast(abs_exp)); } -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result) { using unsigned_integer = typename TargetDecimalType::significand_type; @@ -1170,6 +1171,13 @@ constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, co return to_chars_integer_impl(first, last, abs_exp); } +template +constexpr auto to_chars_cohort_preserving_scientific(char*, char* last, const TargetDecimalType&) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(!is_ieee_type_v, TargetDecimalType, to_chars_result) +{ + return {last, std::errc::invalid_argument}; +} + #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable: 4702) // Unreachable code diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index d9f8d5380..6934819d1 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -98,8 +98,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result); } //namespace detail @@ -207,9 +208,10 @@ BOOST_DECIMAL_EXPORT class decimal128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - - template - friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, TargetDecimalType, to_chars_result); #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal128_t(const char* str, std::size_t len); diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index a000fd526..27d85a189 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -102,8 +102,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result); template constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; @@ -218,8 +219,9 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - template - friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, TargetDecimalType, to_chars_result); #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal32_t(const char* str, std::size_t len); diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 35962a50e..0100e4a4c 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -101,8 +101,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result); template constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; @@ -223,8 +224,9 @@ BOOST_DECIMAL_EXPORT class decimal64_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - template - friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, TargetDecimalType, to_chars_result); template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; From 289bd2e95e8dd870437454209fa4730ece68d999 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 11:38:50 +0200 Subject: [PATCH 428/967] Fix new clang error with missing parenthesis for requires clause --- include/boost/decimal/detail/concepts.hpp | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/concepts.hpp b/include/boost/decimal/detail/concepts.hpp index f78c1c45f..50f5850d6 100644 --- a/include/boost/decimal/detail/concepts.hpp +++ b/include/boost/decimal/detail/concepts.hpp @@ -267,11 +267,11 @@ concept fast_decimal_floating_point_type = boost::decimal::detail::is_fast_type_ #define BOOST_DECIMAL_OUTPUT_ITER(I, T) boost::decimal::detail::concepts::output_iterator #define BOOST_DECIMAL_REQUIRES_ITER(X) requires X -#define BOOST_DECIMAL_REQUIRES(X, T) -> T requires X -#define BOOST_DECIMAL_REQUIRES_TWO(X1, T1, X2, T2) -> detail::promote_args_t requires X1 && X2 -#define BOOST_DECIMAL_REQUIRES_TWO_RETURN(X1, T1, X2, T2, ReturnType) -> ReturnType requires X1 && X2 -#define BOOST_DECIMAL_REQUIRES_THREE(X1, T1, X2, T2, X3, T3) -> detail::promote_args_t requires X1 && X2 && X3 -#define BOOST_DECIMAL_REQUIRES_RETURN(X, T, ReturnType) -> ReturnType requires X +#define BOOST_DECIMAL_REQUIRES(X, T) -> T requires (X) +#define BOOST_DECIMAL_REQUIRES_TWO(X1, T1, X2, T2) -> detail::promote_args_t requires (X1 && X2) +#define BOOST_DECIMAL_REQUIRES_TWO_RETURN(X1, T1, X2, T2, ReturnType) -> ReturnType requires (X1 && X2) +#define BOOST_DECIMAL_REQUIRES_THREE(X1, T1, X2, T2, X3, T3) -> detail::promote_args_t requires (X1 && X2 && X3) +#define BOOST_DECIMAL_REQUIRES_RETURN(X, T, ReturnType) -> ReturnType requires (X) #ifdef BOOST_DECIMAL_EXEC_COMPATIBLE #include From 50aafa3e5a3c22e403ffdbbda8b01d2caa71a67a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 11:49:39 +0200 Subject: [PATCH 429/967] Re-architect for old compilers --- include/boost/decimal/charconv.hpp | 17 +++++++---------- include/boost/decimal/decimal128_t.hpp | 10 ++++------ include/boost/decimal/decimal32_t.hpp | 10 ++++------ include/boost/decimal/decimal64_t.hpp | 10 ++++------ include/boost/decimal/decimal_fast128_t.hpp | 6 ++++++ include/boost/decimal/decimal_fast32_t.hpp | 6 ++++++ include/boost/decimal/decimal_fast64_t.hpp | 6 ++++++ 7 files changed, 37 insertions(+), 28 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 1f30f2a3c..d185daee3 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1109,10 +1109,14 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp return to_chars_integer_impl(first, last, static_cast(abs_exp)); } -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result) +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result { + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_fast_type_v) + { + return {last, std::errc::invalid_argument}; + } + using unsigned_integer = typename TargetDecimalType::significand_type; const auto fp = fpclassify(value); @@ -1171,13 +1175,6 @@ constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, co return to_chars_integer_impl(first, last, abs_exp); } -template -constexpr auto to_chars_cohort_preserving_scientific(char*, char* last, const TargetDecimalType&) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(!is_ieee_type_v, TargetDecimalType, to_chars_result) -{ - return {last, std::errc::invalid_argument}; -} - #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable: 4702) // Unreachable code diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 6934819d1..f3452d65b 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -98,9 +98,8 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result); +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; } //namespace detail @@ -209,9 +208,8 @@ BOOST_DECIMAL_EXPORT class decimal128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - template - friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, TargetDecimalType, to_chars_result); + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal128_t(const char* str, std::size_t len); diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 27d85a189..a000fd526 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -102,9 +102,8 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result); +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; template constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; @@ -219,9 +218,8 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - template - friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, TargetDecimalType, to_chars_result); + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal32_t(const char* str, std::size_t len); diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 0100e4a4c..35962a50e 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -101,9 +101,8 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; -template -constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(is_ieee_type_v, TargetDecimalType, to_chars_result); +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; template constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; @@ -224,9 +223,8 @@ BOOST_DECIMAL_EXPORT class decimal64_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; - template - friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, TargetDecimalType, to_chars_result); + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 953eaaaa8..4cd06a2f7 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -70,6 +70,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + } // namespace detail #ifdef _MSC_VER @@ -185,6 +188,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast128_t(const char* str, std::size_t len); #endif diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 4263b5be5..d6461379c 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -65,6 +65,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; @@ -182,6 +185,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template friend constexpr auto detail::generic_div_impl(const T& lhs, const T& rhs) noexcept -> DecimalType; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 70026c7dd..2e1edc669 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -67,6 +67,9 @@ constexpr auto to_chars_fixed_impl(char* first, char* last, const TargetDecimalT template constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; @@ -189,6 +192,9 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final template friend constexpr auto detail::to_chars_hex_impl(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; From 2791693dae0ef4b16e01f0c0f7ba46b2bc0572e4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 14:26:54 +0200 Subject: [PATCH 430/967] Ignore MSVC warning --- include/boost/decimal/charconv.hpp | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index d185daee3..2f4995f00 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1109,6 +1109,11 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp return to_chars_integer_impl(first, last, static_cast(abs_exp)); } +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable: 4702) // Unreachable code +#endif + template constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result { @@ -1175,11 +1180,6 @@ constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, co return to_chars_integer_impl(first, last, abs_exp); } -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable: 4702) // Unreachable code -#endif - template constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& value, const chars_format fmt = chars_format::general, const int local_precision = -1) noexcept -> to_chars_result { @@ -1261,6 +1261,10 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v return to_chars_scientific_impl(first, last, value, fmt, local_precision); // LCOV_EXCL_LINE } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + } //namespace detail BOOST_DECIMAL_EXPORT template From 6cc89624a6aab19031cc68e6b0e0c30a6e53aab5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 12:35:28 +0200 Subject: [PATCH 431/967] Apply same scientific restrictions to cohort preservation --- include/boost/decimal/detail/parser.hpp | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index 442632757..a3affb537 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -73,7 +73,7 @@ constexpr auto from_chars_dispatch(const char* first, const char* last, builtin_ #if !defined(BOOST_DECIMAL_DISABLE_CLIB) template -constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_Integer& significand, Integer& exponent, chars_format fmt = chars_format::general) noexcept -> from_chars_result +constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_Integer& significand, Integer& exponent, const chars_format fmt = chars_format::general) noexcept -> from_chars_result { if (first >= last) { @@ -225,7 +225,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ if (next == last) { // if fmt is chars_format::scientific the e is required - if (fmt == chars_format::scientific) + if (fmt == chars_format::scientific || fmt == chars_format::cohort_preserving_scientific) { return {first, std::errc::invalid_argument}; } @@ -233,7 +233,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ exponent = 0; std::size_t offset = i; - from_chars_result r = from_chars_dispatch(significand_buffer, significand_buffer + offset, significand, base); + const from_chars_result r {from_chars_dispatch(significand_buffer, significand_buffer + offset, significand, base)}; switch (r.ec) { // The two invalid cases are here for completeness, but I don't think we can actually hit them @@ -304,7 +304,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ if (next == last || is_delimiter(*next, fmt)) { - if (fmt == chars_format::scientific) + if (fmt == chars_format::scientific || fmt == chars_format::cohort_preserving_scientific) { return {first, std::errc::invalid_argument}; } @@ -319,7 +319,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ } std::size_t offset = i; - from_chars_result r = from_chars_dispatch(significand_buffer, significand_buffer + offset, significand, base); + const from_chars_result r {from_chars_dispatch(significand_buffer, significand_buffer + offset, significand, base)}; switch (r.ec) { // Out of range included for completeness, but I don't think we can actually reach it From 5341d3315af7c8445899548b8b508593dc8ed3f7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 13:16:23 +0200 Subject: [PATCH 432/967] Add preliminary parsing support for cohort preservation --- include/boost/decimal/charconv.hpp | 20 +++++++++++++++++-- test/Jamfile | 2 +- ...tum.cpp => test_charconv_preservation.cpp} | 0 3 files changed, 19 insertions(+), 3 deletions(-) rename test/{test_to_chars_quantum.cpp => test_charconv_preservation.cpp} (100%) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 2f4995f00..839ebfe34 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -53,6 +53,14 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ std::numeric_limits::digits), int128::uint128_t, std::uint64_t>; + BOOST_DECIMAL_IF_CONSTEXPR (is_fast_type_v) + { + if (fmt == chars_format::cohort_preserving_scientific) + { + return {first, std::errc::invalid_argument}; + } + } + if (BOOST_DECIMAL_UNLIKELY(first >= last)) { return {first, std::errc::invalid_argument}; @@ -91,11 +99,19 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ errno = static_cast(r.ec); } } - else + + if (fmt == chars_format::cohort_preserving_scientific) { - value = TargetDecimalType(significand, expval, sign); + const auto sig_digs {detail::num_digits(significand)}; + if (sig_digs > precision_v) + { + // If we are parsing more digits than are representable there's no concept of cohorts + return {last, std::errc::value_too_large}; + } } + value = TargetDecimalType(significand, expval, sign); + return r; } diff --git a/test/Jamfile b/test/Jamfile index 481d6fa48..36f4be0e3 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -112,6 +112,7 @@ run test_bid_conversions.cpp ; run test_big_uints.cpp ; run test_boost_math_univariate_stats.cpp ; run test_cbrt.cpp ; +run test_charconv_preservation.cpp ; run test_cmath.cpp ; run test_constants.cpp ; run test_constexpr_rounding_mode.cpp ; @@ -181,7 +182,6 @@ run test_tan.cpp ; run test_tanh.cpp ; run test_tgamma.cpp ; run test_to_chars.cpp ; -run test_to_chars_quantum.cpp ; run test_to_string.cpp ; run test_zeta.cpp ; diff --git a/test/test_to_chars_quantum.cpp b/test/test_charconv_preservation.cpp similarity index 100% rename from test/test_to_chars_quantum.cpp rename to test/test_charconv_preservation.cpp From 1880ba47880c8cb238675a16069a9132aaa8cffa Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 13:44:47 +0200 Subject: [PATCH 433/967] Only take this branch with regular types --- include/boost/decimal/charconv.hpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 839ebfe34..89fcb81c7 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -100,6 +100,8 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ } } + BOOST_DECIMAL_IF_CONSTEXPR (!is_fast_type_v) + { if (fmt == chars_format::cohort_preserving_scientific) { const auto sig_digs {detail::num_digits(significand)}; @@ -107,6 +109,7 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ { // If we are parsing more digits than are representable there's no concept of cohorts return {last, std::errc::value_too_large}; + } } } From f61b215896f09f24aacedcbf405787efa45fe5ef Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 13:44:55 +0200 Subject: [PATCH 434/967] Ignore MSVC warnings --- include/boost/decimal/charconv.hpp | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 89fcb81c7..dea2bfe3c 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -46,6 +46,11 @@ namespace decimal { namespace detail { +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable:4127) +#endif + template constexpr auto from_chars_general_impl(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt) noexcept -> from_chars_result { @@ -102,13 +107,13 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ BOOST_DECIMAL_IF_CONSTEXPR (!is_fast_type_v) { - if (fmt == chars_format::cohort_preserving_scientific) - { - const auto sig_digs {detail::num_digits(significand)}; - if (sig_digs > precision_v) + if (fmt == chars_format::cohort_preserving_scientific) { - // If we are parsing more digits than are representable there's no concept of cohorts - return {last, std::errc::value_too_large}; + const auto sig_digs {detail::num_digits(significand)}; + if (sig_digs > precision_v) + { + // If we are parsing more digits than are representable there's no concept of cohorts + return {last, std::errc::value_too_large}; } } } @@ -118,6 +123,10 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ return r; } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + } //namespace detail template From fde22df0eabe89c44af78de2d309c55228b33b42 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 14:15:25 +0200 Subject: [PATCH 435/967] Add bitwise comparisons of roundtrip to verify proper cohorts --- test/test_charconv_preservation.cpp | 41 +++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/test/test_charconv_preservation.cpp b/test/test_charconv_preservation.cpp index 731cb3af9..60a9200f3 100644 --- a/test/test_charconv_preservation.cpp +++ b/test/test_charconv_preservation.cpp @@ -30,6 +30,35 @@ void test_to_chars_scientific(const ResultsType& decimals, const StringsType& st } } +// The cohorts will compare equal regardless so here we check bit-wise equality to be a successful roundtrip +template +void test_roundtrip(const std::array& decimals, const std::array& strings) +{ + using bit_type = std::conditional_t::value, std::uint32_t, + std::conditional_t::value, std::uint64_t, boost::int128::uint128_t>>; + + for (std::size_t i {}; i < decimals.size(); ++i) + { + bit_type initial_bits; + std::memcpy(&initial_bits, &decimals[i], sizeof(initial_bits)); + + char buffer[64] {}; + const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::cohort_preserving_scientific)}; + BOOST_TEST(r); + *r.ptr = '\0'; + BOOST_TEST_CSTR_EQ(buffer, strings[i]); + + T return_val; + const auto return_r {from_chars(buffer, buffer + sizeof(buffer), return_val, chars_format::cohort_preserving_scientific)}; + BOOST_TEST(return_r); + + bit_type return_bits; + std::memcpy(&return_bits, &return_val, sizeof(return_bits)); + + BOOST_TEST_EQ(initial_bits, return_bits); + } +} + template const std::array decimals = { T{3, 2}, @@ -101,5 +130,17 @@ int main() test_to_chars_scientific(negative_values, negative_values_strings); test_to_chars_scientific(negative_values, negative_values_strings); + test_roundtrip(decimals, strings); + test_roundtrip(decimals, strings); + test_roundtrip(decimals, strings); + + test_roundtrip(decimals_with_exp, decimals_with_exp_strings); + test_roundtrip(decimals_with_exp, decimals_with_exp_strings); + test_roundtrip(decimals_with_exp, decimals_with_exp_strings); + + test_roundtrip(negative_values, negative_values_strings); + test_roundtrip(negative_values, negative_values_strings); + test_roundtrip(negative_values, negative_values_strings); + return boost::report_errors(); } From 6fcbde7a1bf3ee7d3270422051a7f2ea9c3bd4fe Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 15:08:04 +0200 Subject: [PATCH 436/967] Test invalid from_chars values --- test/test_charconv_preservation.cpp | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/test/test_charconv_preservation.cpp b/test/test_charconv_preservation.cpp index 60a9200f3..e464c805f 100644 --- a/test/test_charconv_preservation.cpp +++ b/test/test_charconv_preservation.cpp @@ -59,6 +59,17 @@ void test_roundtrip(const std::array& decimals, const std::array +void test_invalid_values(const std::array& strings) +{ + for (std::size_t i {}; i < strings.size(); ++i) + { + TargetDecimalType val; + const auto r {from_chars(strings[i], strings[i] + sizeof(strings[i]), val, chars_format::cohort_preserving_scientific)}; + BOOST_TEST(!r); + } +} + template const std::array decimals = { T{3, 2}, @@ -116,6 +127,12 @@ constexpr std::array negative_values_strings = { "-3.210000e-47" }; +constexpr std::array invalid_decimal32_strings = { + "+3.2e+20", + "3.421", + "9.999999999999999e+05", +}; + int main() { test_to_chars_scientific(decimals, strings); @@ -142,5 +159,12 @@ int main() test_roundtrip(negative_values, negative_values_strings); test_roundtrip(negative_values, negative_values_strings); + test_invalid_values(invalid_decimal32_strings); + + // Every value for fast types are invalid + test_invalid_values(strings); + test_invalid_values(decimals_with_exp_strings); + test_invalid_values(negative_values_strings); + return boost::report_errors(); } From 80f02da0d87b87e1e0d086c07fe60c5ca4b8d21f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 15:10:30 +0200 Subject: [PATCH 437/967] Test invalid to_chars for fast types --- test/test_charconv_preservation.cpp | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/test/test_charconv_preservation.cpp b/test/test_charconv_preservation.cpp index e464c805f..833fbdcd1 100644 --- a/test/test_charconv_preservation.cpp +++ b/test/test_charconv_preservation.cpp @@ -70,6 +70,17 @@ void test_invalid_values(const std::array& strings) } } +template +void test_invalid_to_chars(const std::array& decimals) +{ + for (std::size_t i {}; i < decimals.size(); ++i) + { + char buffer[64] {}; + const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::cohort_preserving_scientific)}; + BOOST_TEST(!r); + } +} + template const std::array decimals = { T{3, 2}, @@ -165,6 +176,9 @@ int main() test_invalid_values(strings); test_invalid_values(decimals_with_exp_strings); test_invalid_values(negative_values_strings); + test_invalid_to_chars(decimals); + test_invalid_to_chars(decimals); + test_invalid_to_chars(decimals); return boost::report_errors(); } From 9332361e3e945d843cdc6a7ab84830454f8999da Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 15:13:18 +0200 Subject: [PATCH 438/967] Add in checks that specified precision is invalid --- test/test_charconv_preservation.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/test/test_charconv_preservation.cpp b/test/test_charconv_preservation.cpp index 833fbdcd1..6cda9819d 100644 --- a/test/test_charconv_preservation.cpp +++ b/test/test_charconv_preservation.cpp @@ -79,6 +79,13 @@ void test_invalid_to_chars(const std::array& decimals) const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::cohort_preserving_scientific)}; BOOST_TEST(!r); } + + for (std::size_t i {}; i < decimals.size(); ++i) + { + char buffer[64] {}; + const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::cohort_preserving_scientific, 5)}; + BOOST_TEST(!r); + } } template @@ -180,5 +187,10 @@ int main() test_invalid_to_chars(decimals); test_invalid_to_chars(decimals); + // Specified precision is not allowed + test_invalid_to_chars(decimals); + test_invalid_to_chars(decimals); + test_invalid_to_chars(decimals); + return boost::report_errors(); } From e4b010bc3178f4ae5acbe3d668621816219a05dc Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 15:22:08 +0200 Subject: [PATCH 439/967] Fix test paths --- test/test_charconv_preservation.cpp | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/test/test_charconv_preservation.cpp b/test/test_charconv_preservation.cpp index 6cda9819d..2a902d5f9 100644 --- a/test/test_charconv_preservation.cpp +++ b/test/test_charconv_preservation.cpp @@ -70,14 +70,22 @@ void test_invalid_values(const std::array& strings) } } +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable: 4127) +#endif + template void test_invalid_to_chars(const std::array& decimals) { - for (std::size_t i {}; i < decimals.size(); ++i) + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_fast_type_v) { - char buffer[64] {}; - const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::cohort_preserving_scientific)}; - BOOST_TEST(!r); + for (std::size_t i {}; i < decimals.size(); ++i) + { + char buffer[64] {}; + const auto r {to_chars(buffer, buffer + sizeof(buffer), decimals[i], chars_format::cohort_preserving_scientific)}; + BOOST_TEST(!r); + } } for (std::size_t i {}; i < decimals.size(); ++i) @@ -88,6 +96,10 @@ void test_invalid_to_chars(const std::array& decimals) } } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + template const std::array decimals = { T{3, 2}, From 33b21076965fcc5350e9747e7c22e5d5e3759ebc Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 15:22:38 +0200 Subject: [PATCH 440/967] Handle path with specified precision on cohort argument --- include/boost/decimal/charconv.hpp | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index dea2bfe3c..78a29d59a 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1245,11 +1245,6 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v case chars_format::hex: return to_chars_hex_impl(first, last, value); case chars_format::cohort_preserving_scientific: - BOOST_DECIMAL_IF_CONSTEXPR (detail::is_fast_type_v) - { - // Fast types have no concept of cohorts - return {last, std::errc::invalid_argument}; - } if (local_precision != -1) { @@ -1272,17 +1267,16 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v return to_chars_fixed_impl(first, last, value, fmt, local_precision); } - if (fmt == chars_format::fixed) - { - return to_chars_fixed_impl(first, last, value, fmt, local_precision); - } - else if (fmt == chars_format::hex) - { - return to_chars_hex_impl(first, last, value, local_precision); - } - else + switch (fmt) { - return to_chars_scientific_impl(first, last, value, fmt, local_precision); + case chars_format::fixed: + return to_chars_fixed_impl(first, last, value, fmt, local_precision); + case chars_format::hex: + return to_chars_hex_impl(first, last, value, local_precision); + case chars_format::cohort_preserving_scientific: + return {last, std::errc::invalid_argument}; + default: + return to_chars_scientific_impl(first, last, value, fmt, local_precision); } } From b3222fd20305ff34eb778475e93633b069116262 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 15:37:52 +0200 Subject: [PATCH 441/967] Add coverage of cohort_preserving_scientific format to page --- doc/modules/ROOT/pages/charconv.adoc | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index 6201a9123..107d5cf97 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -1,5 +1,5 @@ //// -Copyright 2024 Matt Borland +Copyright 2024 - 2025 Matt Borland Distributed under the Boost Software License, Version 1.0. https://www.boost.org/LICENSE_1_0.txt //// @@ -21,9 +21,10 @@ namespace decimal { enum class chars_format : unsigned { - scientific = 1 << 0, - fixed = 1 << 1, - hex = 1 << 2, + scientific, + fixed, + hex, + cohort_preserving_scientific, general = fixed | scientific }; @@ -31,6 +32,11 @@ enum class chars_format : unsigned } //namespace boost ---- +The one difference here between `` and what we provide is the option `cohort_preserving_scientific`. +This format is allowed in both `from_chars` and `to_chars` in specially defined ways to allow for cohorts to be preserved during the conversion process. + +IMPORTANT: When using `from_chars` or `to_chars` with fast types it is invalid to specify the format `cohort_preserving_scientific` as these types have no support for cohorts. + [#from_chars_result] == from_chars_result [source, c++] @@ -106,6 +112,9 @@ constexpr std::from_chars_result from_chars(const char* first, const char* last, } //namespace boost ---- +When using the format `cohort_preserving_scientific` the number of digits in the string to be converted must not exceed the precision of the type that it is being converted to. +For example: `4.99999999999e+03` is invalid if being converted to `decimal32_t` because it is not exactly representable in the type. + IMPORTANT: If `std::chars_format` is used the function will return a `std::from_chars_result` and if `boost::decimal::chars_format` is used *OR* no format is specified then a `boost::decimal::from_chars_result` will be returned. [#to_chars] @@ -140,7 +149,10 @@ constexpr std::to_chars_result to_chars(char* first, char* last, DecimalType val } //namespace boost ---- -All `to_chars` functions ignore the effects of cohorts, and instead output normalized values. +All `to_chars` functions, except for when using the format `cohort_preserving_scientific`, ignore the effects of cohorts, and instead output normalized values. +Additionally, when using the format `cohort_preserving_scientific` if a precision is specified the function will return `{first, std::errc::invalid_argument}`. +Per IEEE 754 specifying both a precision and cohort preservation is an invalid operation. +This follows because you are potentially rounding the number, or adding trailing zeros to the fraction which both destroy the cohort information. IMPORTANT: Same as `from_chars`, `boost::decimal::to_chars` will return a `std::to_chars_result` if `std::chars_format` is used to specify the format; otherwise it returns a `boost::decimal::to_chars_result`. From 5ca37c22a2e67de1de6e10934cfe3fe7047a7702 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 22 Oct 2025 15:40:32 +0200 Subject: [PATCH 442/967] Add note on injection of additional chars format option --- doc/modules/ROOT/pages/design.adoc | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/modules/ROOT/pages/design.adoc b/doc/modules/ROOT/pages/design.adoc index 39d5f84bc..68c49640f 100644 --- a/doc/modules/ROOT/pages/design.adoc +++ b/doc/modules/ROOT/pages/design.adoc @@ -66,6 +66,11 @@ This behavior is the same as that of https://www.boost.org/doc/libs/master/libs/ The pass:[C++] specification states that `from_chars` resulting value is to be rounded to nearest. Since the types in this library are more sensitive to rounding mode differences, `from_chars` rounds using the current global rounding mode as reported by `fegetround()`. +=== `from_chars` and `to_chars` both have an additional `chars_format` option + +In order to support an IEEE 754 requirement to print a value to include its cohort information we introduced an additional `chars_format` option, `cohort_preserving_scientific`. +Cohort preservation only makes sense in scientific format because it is the actual representation of the layout of the type, and thus no other cohort preserving formats are supported. + [#non-finite-deviation] === `istream` of Non-finite Values is Allowed From f05d650a0f69df21490c28918347ba9b391d2073 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 23 Oct 2025 08:53:34 +0200 Subject: [PATCH 443/967] Move all throwing tests to the end since they break the debugger --- test/test_string_construction.cpp | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/test/test_string_construction.cpp b/test/test_string_construction.cpp index e28084c9e..305865883 100644 --- a/test/test_string_construction.cpp +++ b/test/test_string_construction.cpp @@ -76,28 +76,29 @@ void test_nonfinite() int main() { test_trivial(); - test_invalid(); test_nonfinite(); test_trivial(); - test_invalid(); test_nonfinite(); test_trivial(); - test_invalid(); test_nonfinite(); test_trivial(); - test_invalid(); test_nonfinite(); test_trivial(); - test_invalid(); test_nonfinite(); test_trivial(); - test_invalid(); test_nonfinite(); + test_invalid(); + test_invalid(); + test_invalid(); + test_invalid(); + test_invalid(); + test_invalid(); + return boost::report_errors(); } From 5c6a236c8a5bbacf7f1e49b8a6f09ce3d9b1f326 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 23 Oct 2025 09:47:50 +0200 Subject: [PATCH 444/967] Fix non-finite values being over-written --- include/boost/decimal/charconv.hpp | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 78a29d59a..07b8dbea9 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -104,21 +104,23 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ errno = static_cast(r.ec); } } - - BOOST_DECIMAL_IF_CONSTEXPR (!is_fast_type_v) + else { - if (fmt == chars_format::cohort_preserving_scientific) + BOOST_DECIMAL_IF_CONSTEXPR (!is_fast_type_v) { - const auto sig_digs {detail::num_digits(significand)}; - if (sig_digs > precision_v) + if (fmt == chars_format::cohort_preserving_scientific) { - // If we are parsing more digits than are representable there's no concept of cohorts - return {last, std::errc::value_too_large}; + const auto sig_digs {detail::num_digits(significand)}; + if (sig_digs > precision_v) + { + // If we are parsing more digits than are representable there's no concept of cohorts + return {last, std::errc::value_too_large}; + } } } - } - value = TargetDecimalType(significand, expval, sign); + value = TargetDecimalType(significand, expval, sign); + } return r; } From 506d95c0e29e4348752c676e62cead30f268d392 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 23 Oct 2025 10:42:56 +0200 Subject: [PATCH 445/967] Add example --- examples/charconv_cohort_preservation.cpp | 107 ++++++++++++++++++++++ test/Jamfile | 1 + 2 files changed, 108 insertions(+) create mode 100644 examples/charconv_cohort_preservation.cpp diff --git a/examples/charconv_cohort_preservation.cpp b/examples/charconv_cohort_preservation.cpp new file mode 100644 index 000000000..1d437be04 --- /dev/null +++ b/examples/charconv_cohort_preservation.cpp @@ -0,0 +1,107 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include +#include +#include +#include + +static constexpr std::size_t N {7}; + +// All the following decimal values will compare equal, +// but since they have different numbers of 0s in the significand they will not be bitwise equal +constexpr std::array decimals = { + boost::decimal::decimal32_t{3, 2}, + boost::decimal::decimal32_t{30, 1}, + boost::decimal::decimal32_t{300, 0}, + boost::decimal::decimal32_t{3000, -1}, + boost::decimal::decimal32_t{30000, -2}, + boost::decimal::decimal32_t{300000, -3}, + boost::decimal::decimal32_t{3000000, -4}, +}; + +// These strings represent the same values as the constructed ones shown above +constexpr std::array strings = { + "3e+02", + "3.0e+02", + "3.00e+02", + "3.000e+02", + "3.0000e+02", + "3.00000e+02", + "3.000000e+02", +}; + +int main() +{ + using namespace boost::decimal; + + // In some instances we want to preserve the cohort of our values + // In the above strings array all of these values compare equal, + // but will NOT be bitwise equal once constructed. + + for (std::size_t i = 0; i < N; ++i) + { + decimal32_t string_val; + const auto r_from = from_chars(strings[i], string_val, chars_format::cohort_preserving_scientific); + + if (!r_from) + { + // Unexpected failure + return 1; + } + + for (std::size_t j = 0; j < N; ++j) + { + // Now that we have constructed a value from string + // we can compare it bitwise to all the members of the decimal array + // to show the difference between operator== and bitwise equality + // + // All members of a cohort are supposed to compare equal with operator==, + // and likewise will hash equal to + std::uint32_t string_val_bits; + std::uint32_t constructed_val_bits; + + std::memcpy(&string_val_bits, &string_val, sizeof(string_val_bits)); + std::memcpy(&constructed_val_bits, &decimals[j], sizeof(constructed_val_bits)); + + if (string_val == decimals[j]) + { + std::cout << "Values are equal and "; + if (string_val_bits == constructed_val_bits) + { + std::cout << "bitwise equal.\n"; + } + else + { + std::cout << "NOT bitwise equal.\n"; + } + } + } + + // The same chars_format option applies to to_chars which allows us to roundtrip the values + char buffer[64] {}; + const auto r_to = to_chars(buffer, buffer + sizeof(buffer), string_val, chars_format::cohort_preserving_scientific); + + if (!r_to) + { + // Unexpected failure + return 1; + } + + *r_to.ptr = '\0'; // charconv does not null terminate per the C++ specification + + if (std::strcmp(strings[i], buffer) == 0) + { + std::cout << "Successful Roundtrip\n\n"; + } + else + { + std::cout << "Failed\n\n"; + return 1; + } + } + + return 0; +} diff --git a/test/Jamfile b/test/Jamfile index 36f4be0e3..9630fd4d4 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -190,6 +190,7 @@ run ../examples/adl.cpp ; run ../examples/basic_construction.cpp ; run ../examples/bit_conversions.cpp ; run ../examples/charconv.cpp ; +run ../examples/charconv_cohort_preservation.cpp ; run ../examples/literals.cpp ; run ../examples/rounding_mode.cpp ; run ../examples/rounding_mode_compile_time.cpp ; From c7ee8b92ecd86851c178caf7c073696781aab81b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 23 Oct 2025 13:47:01 +0200 Subject: [PATCH 446/967] Ignore class memaccess warning --- test/test_charconv_preservation.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/test/test_charconv_preservation.cpp b/test/test_charconv_preservation.cpp index 2a902d5f9..bc76fa3fb 100644 --- a/test/test_charconv_preservation.cpp +++ b/test/test_charconv_preservation.cpp @@ -6,6 +6,11 @@ #include #include +#if defined(__GNUC__) && __GNUC__ >= 8 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wclass-memaccess" +#endif + using namespace boost::decimal; template From 1256698543581dc76bc3b591d72c87eb6e872eac Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 23 Oct 2025 16:15:07 +0200 Subject: [PATCH 447/967] Change hex support from a to x --- include/boost/decimal/fmt_format.hpp | 4 ++-- include/boost/decimal/format.hpp | 6 +++--- test/test_format.cpp | 30 ++++++++++++++-------------- test/test_format_fmtlib.cpp | 30 ++++++++++++++-------------- 4 files changed, 35 insertions(+), 35 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 63d746b2e..a9a54c4e6 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -117,11 +117,11 @@ constexpr auto parse_impl(ParseContext &ctx) fmt = chars_format::scientific; break; - case 'A': + case 'X': is_upper = true; fmt = chars_format::hex; break; - case 'a': + case 'x': fmt = chars_format::hex; break; // LCOV_EXCL_START diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 78c03a9f9..d2abe2d54 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -24,7 +24,7 @@ // Default :g // Fixed :f // Scientific :e -// Hex :a +// Hex :x // // Capital letter for any of the above leads to all characters being uppercase @@ -114,10 +114,10 @@ constexpr auto parse_impl(ParseContext &ctx) fmt = chars_format::scientific; break; - case 'A': + case 'X': is_upper = true; [[fallthrough]]; - case 'a': + case 'x': fmt = chars_format::hex; break; // LCOV_EXCL_START diff --git a/test/test_format.cpp b/test/test_format.cpp index 9988a5728..6433216d4 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -173,21 +173,21 @@ void test_scientific() template void test_hex() { - BOOST_TEST_EQ(std::format("{:.0a}", T {0}), "0p+00"); - BOOST_TEST_EQ(std::format("{:.3A}", T {0}), "0.000P+00"); - BOOST_TEST_EQ(std::format("{:a}", std::numeric_limits::infinity()), "inf"); - BOOST_TEST_EQ(std::format("{:a}", -std::numeric_limits::infinity()), "-inf"); - BOOST_TEST_EQ(std::format("{:a}", std::numeric_limits::quiet_NaN()), "nan"); - BOOST_TEST_EQ(std::format("{:a}", -std::numeric_limits::quiet_NaN()), "-nan(ind)"); - BOOST_TEST_EQ(std::format("{:a}", std::numeric_limits::signaling_NaN()), "nan(snan)"); - BOOST_TEST_EQ(std::format("{:a}", -std::numeric_limits::signaling_NaN()), "-nan(snan)"); - - BOOST_TEST_EQ(std::format("{:A}", std::numeric_limits::infinity()), "INF"); - BOOST_TEST_EQ(std::format("{:A}", -std::numeric_limits::infinity()), "-INF"); - BOOST_TEST_EQ(std::format("{:A}", std::numeric_limits::quiet_NaN()), "NAN"); - BOOST_TEST_EQ(std::format("{:A}", -std::numeric_limits::quiet_NaN()), "-NAN(IND)"); - BOOST_TEST_EQ(std::format("{:A}", std::numeric_limits::signaling_NaN()), "NAN(SNAN)"); - BOOST_TEST_EQ(std::format("{:A}", -std::numeric_limits::signaling_NaN()), "-NAN(SNAN)"); + BOOST_TEST_EQ(std::format("{:.0x}", T {0}), "0p+00"); + BOOST_TEST_EQ(std::format("{:.3X}", T {0}), "0.000P+00"); + BOOST_TEST_EQ(std::format("{:x}", std::numeric_limits::infinity()), "inf"); + BOOST_TEST_EQ(std::format("{:x}", -std::numeric_limits::infinity()), "-inf"); + BOOST_TEST_EQ(std::format("{:x}", std::numeric_limits::quiet_NaN()), "nan"); + BOOST_TEST_EQ(std::format("{:x}", -std::numeric_limits::quiet_NaN()), "-nan(ind)"); + BOOST_TEST_EQ(std::format("{:x}", std::numeric_limits::signaling_NaN()), "nan(snan)"); + BOOST_TEST_EQ(std::format("{:x}", -std::numeric_limits::signaling_NaN()), "-nan(snan)"); + + BOOST_TEST_EQ(std::format("{:X}", std::numeric_limits::infinity()), "INF"); + BOOST_TEST_EQ(std::format("{:X}", -std::numeric_limits::infinity()), "-INF"); + BOOST_TEST_EQ(std::format("{:X}", std::numeric_limits::quiet_NaN()), "NAN"); + BOOST_TEST_EQ(std::format("{:X}", -std::numeric_limits::quiet_NaN()), "-NAN(IND)"); + BOOST_TEST_EQ(std::format("{:X}", std::numeric_limits::signaling_NaN()), "NAN(SNAN)"); + BOOST_TEST_EQ(std::format("{:X}", -std::numeric_limits::signaling_NaN()), "-NAN(SNAN)"); } template diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index 7e79e2c3c..3587e9b34 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -198,21 +198,21 @@ void test_scientific() template void test_hex() { - BOOST_TEST_EQ(fmt::format("{:.0a}", T {0}), "0p+00"); - BOOST_TEST_EQ(fmt::format("{:.3A}", T {0}), "0.000P+00"); - BOOST_TEST_EQ(fmt::format("{:a}", std::numeric_limits::infinity()), "inf"); - BOOST_TEST_EQ(fmt::format("{:a}", -std::numeric_limits::infinity()), "-inf"); - BOOST_TEST_EQ(fmt::format("{:a}", std::numeric_limits::quiet_NaN()), "nan"); - BOOST_TEST_EQ(fmt::format("{:a}", -std::numeric_limits::quiet_NaN()), "-nan(ind)"); - BOOST_TEST_EQ(fmt::format("{:a}", std::numeric_limits::signaling_NaN()), "nan(snan)"); - BOOST_TEST_EQ(fmt::format("{:a}", -std::numeric_limits::signaling_NaN()), "-nan(snan)"); - - BOOST_TEST_EQ(fmt::format("{:A}", std::numeric_limits::infinity()), "INF"); - BOOST_TEST_EQ(fmt::format("{:A}", -std::numeric_limits::infinity()), "-INF"); - BOOST_TEST_EQ(fmt::format("{:A}", std::numeric_limits::quiet_NaN()), "NAN"); - BOOST_TEST_EQ(fmt::format("{:A}", -std::numeric_limits::quiet_NaN()), "-NAN(IND)"); - BOOST_TEST_EQ(fmt::format("{:A}", std::numeric_limits::signaling_NaN()), "NAN(SNAN)"); - BOOST_TEST_EQ(fmt::format("{:A}", -std::numeric_limits::signaling_NaN()), "-NAN(SNAN)"); + BOOST_TEST_EQ(fmt::format("{:.0x}", T {0}), "0p+00"); + BOOST_TEST_EQ(fmt::format("{:.3X}", T {0}), "0.000P+00"); + BOOST_TEST_EQ(fmt::format("{:x}", std::numeric_limits::infinity()), "inf"); + BOOST_TEST_EQ(fmt::format("{:x}", -std::numeric_limits::infinity()), "-inf"); + BOOST_TEST_EQ(fmt::format("{:x}", std::numeric_limits::quiet_NaN()), "nan"); + BOOST_TEST_EQ(fmt::format("{:x}", -std::numeric_limits::quiet_NaN()), "-nan(ind)"); + BOOST_TEST_EQ(fmt::format("{:x}", std::numeric_limits::signaling_NaN()), "nan(snan)"); + BOOST_TEST_EQ(fmt::format("{:x}", -std::numeric_limits::signaling_NaN()), "-nan(snan)"); + + BOOST_TEST_EQ(fmt::format("{:X}", std::numeric_limits::infinity()), "INF"); + BOOST_TEST_EQ(fmt::format("{:X}", -std::numeric_limits::infinity()), "-INF"); + BOOST_TEST_EQ(fmt::format("{:X}", std::numeric_limits::quiet_NaN()), "NAN"); + BOOST_TEST_EQ(fmt::format("{:X}", -std::numeric_limits::quiet_NaN()), "-NAN(IND)"); + BOOST_TEST_EQ(fmt::format("{:X}", std::numeric_limits::signaling_NaN()), "NAN(SNAN)"); + BOOST_TEST_EQ(fmt::format("{:X}", -std::numeric_limits::signaling_NaN()), "-NAN(SNAN)"); } template From 501f5286ef6528c1c76eaa1edfaac9f0bc49a9ea Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 23 Oct 2025 16:44:40 +0200 Subject: [PATCH 448/967] Add in processing of a new A option --- include/boost/decimal/fmt_format.hpp | 18 ++++++++++++++++++ include/boost/decimal/format.hpp | 14 ++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index a9a54c4e6..e7d4a521f 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -124,6 +124,24 @@ constexpr auto parse_impl(ParseContext &ctx) case 'x': fmt = chars_format::hex; break; + + case 'A': + if (ctx_precision != -1) + { + BOOST_DECIMAL_THROW_EXCEPTION(std::logic_error("Cohort preservation is mutually exclusive with precision")); + } + + is_upper = true; + fmt = chars_format::cohort_preserving_scientific; + break; + case 'a': + if (ctx_precision != -1) + { + BOOST_DECIMAL_THROW_EXCEPTION(std::logic_error("Cohort preservation is mutually exclusive with precision")); + } + + fmt = chars_format::cohort_preserving_scientific; + break; // LCOV_EXCL_START default: BOOST_DECIMAL_THROW_EXCEPTION(std::logic_error("Invalid format specifier")); diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index d2abe2d54..842461bfa 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -25,6 +25,7 @@ // Fixed :f // Scientific :e // Hex :x +// Cohort Preserving :a // // Capital letter for any of the above leads to all characters being uppercase @@ -120,6 +121,19 @@ constexpr auto parse_impl(ParseContext &ctx) case 'x': fmt = chars_format::hex; break; + + case 'A': + is_upper = true; + [[fallthrough]]; + case 'a': + if (ctx_precision != -1) + { + BOOST_DECIMAL_THROW_EXCEPTION(std::format_error("Cohort preservation is mutually exclusive with precision")); + } + + fmt = chars_format::cohort_preserving_scientific; + break; + // LCOV_EXCL_START default: BOOST_DECIMAL_THROW_EXCEPTION(std::format_error("Invalid format specifier")); From 332147679c991545211e12828701a55001193abf Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 06:44:18 +0200 Subject: [PATCH 449/967] Add basic testing of cohort preserving {fmt} formatting --- test/test_format_fmtlib.cpp | 43 +++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index 3587e9b34..b6d6119c1 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -12,6 +12,9 @@ #include #include #include +#include +#include +#include using namespace boost::decimal; @@ -222,6 +225,42 @@ void test_with_string() BOOST_TEST_EQ(fmt::format("Height is: {} meters", T {2}), "Height is: 2 meters"); } +template +void test_cohort_preservation() +{ + const std::array decimals = { + T {5, 4}, + T {50, 3}, + T {500, 2}, + T {5000, 1}, + T {50000, 0}, + T {500000, -1}, + T {5000000, -2}, + }; + + const std::array result_strings = { + "5e+04", + "5.0e+04", + "5.00e+04", + "5.000e+04", + "5.0000e+04", + "5.00000e+04", + "5.000000e+04", + }; + + for (std::size_t i {}; i < decimals.size(); ++i) + { + BOOST_TEST_CSTR_EQ(fmt::format("{:a}", decimals[i]).c_str(), result_strings[i]); + + std::string s {result_strings[i]}; + std::transform(s.begin(), s.end(), s.begin(), + [](unsigned char c) + { return std::toupper(c); }); + + BOOST_TEST_CSTR_EQ(fmt::format("{:A}", decimals[i]).c_str(), s.c_str()); + } +} + #ifdef _MSC_VER #pragma warning(pop) #endif @@ -263,6 +302,10 @@ int main() test_with_string(); test_with_string(); + test_cohort_preservation(); + test_cohort_preservation(); + test_cohort_preservation(); + return boost::report_errors(); } From 250345df48f747f102009474bfbf3bd9e899f9a6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 06:47:54 +0200 Subject: [PATCH 450/967] Add basic testing of cohort preserving --- test/test_format.cpp | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/test/test_format.cpp b/test/test_format.cpp index 6433216d4..67808052b 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -5,6 +5,9 @@ #include #include #include +#include +#include +#include using namespace boost::decimal; @@ -197,6 +200,42 @@ void test_with_string() BOOST_TEST_EQ(std::format("Height is: {} meters", T {2}), "Height is: 2 meters"); } +template +void test_cohort_preservation() +{ + const std::array decimals = { + T {5, 4}, + T {50, 3}, + T {500, 2}, + T {5000, 1}, + T {50000, 0}, + T {500000, -1}, + T {5000000, -2}, + }; + + const std::array result_strings = { + "5e+04", + "5.0e+04", + "5.00e+04", + "5.000e+04", + "5.0000e+04", + "5.00000e+04", + "5.000000e+04", + }; + + for (std::size_t i {}; i < decimals.size(); ++i) + { + BOOST_TEST_CSTR_EQ(std::format("{:a}", decimals[i]).c_str(), result_strings[i]); + + std::string s {result_strings[i]}; + std::transform(s.begin(), s.end(), s.begin(), + [](unsigned char c) + { return std::toupper(c); }); + + BOOST_TEST_CSTR_EQ(std::format("{:A}", decimals[i]).c_str(), s.c_str()); + } +} + int main() { test_general(); @@ -234,6 +273,10 @@ int main() test_with_string(); test_with_string(); + test_cohort_preservation(); + test_cohort_preservation(); + test_cohort_preservation(); + return boost::report_errors(); } From bb266acf32720e6468b8eaf62170fde42a6ae65e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:08:25 +0200 Subject: [PATCH 451/967] Fix scientific/fixed format crossover point for general format --- include/boost/decimal/charconv.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 07b8dbea9..e857f72b1 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1222,7 +1222,7 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v auto abs_value = abs(value); constexpr auto max_fractional_value = decimal_val_v < 64 ? TargetDecimalType{1, 7} : decimal_val_v < 128 ? TargetDecimalType{1, 16} : - TargetDecimalType{1, 34}; + TargetDecimalType{1, 34}; constexpr auto min_fractional_value = TargetDecimalType{1, -4}; @@ -1232,7 +1232,7 @@ constexpr auto to_chars_impl(char* first, char* last, const TargetDecimalType& v switch (fmt) { case chars_format::general: - if (abs_value >= 1 && abs_value < max_fractional_value) + if (abs_value >= min_fractional_value && abs_value < max_fractional_value) { return to_chars_fixed_impl(first, last, value, fmt); } From 9b895443b2fe504d4f1be7cf074e96cb1203b5fe Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:08:39 +0200 Subject: [PATCH 452/967] Expand example --- examples/fmt_format.cpp | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/examples/fmt_format.cpp b/examples/fmt_format.cpp index df821fd4e..792dc6316 100644 --- a/examples/fmt_format.cpp +++ b/examples/fmt_format.cpp @@ -3,19 +3,37 @@ // https://www.boost.org/LICENSE_1_0.txt #include +#include #include #if defined(BOOST_DECIMAL_HAS_FMTLIB_SUPPORT) && defined(BOOST_DECIMAL_TEST_FMT) -#include - int main() { constexpr boost::decimal::decimal64_t val1 {314, -2}; constexpr boost::decimal::decimal32_t val2 {3141, -3}; + // The easiest is no specification which is general format + // Given these values they will print in fixed format + std::cout << "Default Format:\n"; + std::cout << fmt::format("{}", val1) << '\n'; + std::cout << fmt::format("{}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + std::cout << "Scientific Format:\n"; + std::cout << fmt::format("{:e}", val1) << '\n'; + std::cout << fmt::format("{:e}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + // Here this gives one digit of precision rounded according to current rounding mode + std::cout << "Scientific Format with Specified Precision:\n"; + std::cout << fmt::format("{:.1e}", val1) << '\n'; + std::cout << fmt::format("{:.1e}", val2) << "\n\n"; + + // This combines the padding modifier (10), precision (3 digits), and a type modifier (e) + std::cout << "Scientific Format with Specified Precision and Padding:\n"; std::cout << fmt::format("{:10.3e}", val1) << '\n'; - std::cout << fmt::format("{:10.3e}", val2) << std::endl; + std::cout << fmt::format("{:10.3e}", val2) << '\n'; return 0; } From cb0c49f0165311b9a2efe89766fcc3abfdba62fa Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:09:59 +0200 Subject: [PATCH 453/967] Add additional type modifier to docs --- doc/modules/ROOT/pages/format.adoc | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index 91d19fa95..25f1e2ce3 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -24,7 +24,8 @@ The following type modifiers are the same as those used by built-in floating poi | "g" or "G" | General | "e" or "E" | Scientific | "f" | Fixed -| "a" or "A" | Hex +| "x" or "X" | Hex +| "a" or "A" | Cohort Preserving Scientific |=== Example usage for scientific format would be: `{:e}` From c04b4846f2c960ae07b3c29318ea3aed5f855c7b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:13:58 +0200 Subject: [PATCH 454/967] Update test value for general format value --- test/github_issue_988.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/github_issue_988.cpp b/test/github_issue_988.cpp index cec1a313c..cdf20efa1 100644 --- a/test/github_issue_988.cpp +++ b/test/github_issue_988.cpp @@ -28,7 +28,7 @@ void test() const auto r = to_chars(buffer, buffer + sizeof(buffer), decimal_value); BOOST_TEST(r); *r.ptr = '\0'; - BOOST_TEST_CSTR_EQ(buffer, "-9.9999999999984e-01"); + BOOST_TEST_CSTR_EQ(buffer, "-0.99999999999984"); } void general_precision_test() From 46126bdc936bcbc5b1a8ac954e1a76a94a5f45d2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 09:12:52 +0200 Subject: [PATCH 455/967] Ignore MSVC conversion warnings --- test/test_format.cpp | 10 ++++++++++ test/test_format_fmtlib.cpp | 9 +++++++++ 2 files changed, 19 insertions(+) diff --git a/test/test_format.cpp b/test/test_format.cpp index 67808052b..9d4159196 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -228,10 +228,20 @@ void test_cohort_preservation() BOOST_TEST_CSTR_EQ(std::format("{:a}", decimals[i]).c_str(), result_strings[i]); std::string s {result_strings[i]}; + + #ifdef _MSC_VER + # pragma warning(push) + # pragma warning(disable : 4244) + #endif + std::transform(s.begin(), s.end(), s.begin(), [](unsigned char c) { return std::toupper(c); }); + #ifdef _MSC_VER + # pragma warning(pop) + #endif + BOOST_TEST_CSTR_EQ(std::format("{:A}", decimals[i]).c_str(), s.c_str()); } } diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index b6d6119c1..4d2372a7b 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -252,11 +252,20 @@ void test_cohort_preservation() { BOOST_TEST_CSTR_EQ(fmt::format("{:a}", decimals[i]).c_str(), result_strings[i]); + #ifdef _MSC_VER + # pragma warning(push) + # pragma warning(disable : 4244) + #endif + std::string s {result_strings[i]}; std::transform(s.begin(), s.end(), s.begin(), [](unsigned char c) { return std::toupper(c); }); + #ifdef _MSC_VER + # pragma warning(pop) + #endif + BOOST_TEST_CSTR_EQ(fmt::format("{:A}", decimals[i]).c_str(), s.c_str()); } } From 2e763e538e766c5378739e5e52f2f5b1e12b9547 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:26:47 +0200 Subject: [PATCH 456/967] Const correctness --- include/boost/decimal/detail/locale_conversion.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index 8c567ac4d..81f09da5e 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -84,7 +84,7 @@ inline void convert_string_to_c_locale(char* buffer) noexcept convert_string_to_c_locale(buffer, std::locale()); } -inline int convert_pointer_pair_to_local_locale(char* first, char* last, const std::locale& loc) noexcept +inline int convert_pointer_pair_to_local_locale(char* first, const char* last, const std::locale& loc) noexcept { const std::numpunct& np = std::use_facet>(loc); @@ -187,7 +187,7 @@ inline int convert_pointer_pair_to_local_locale(char* first, char* last, const s # pragma GCC diagnostic pop #endif -inline int convert_pointer_pair_to_local_locale(char* first, char* last) +inline int convert_pointer_pair_to_local_locale(char* first, const char* last) { const auto loc {std::locale()}; return convert_pointer_pair_to_local_locale(first, last, loc); From 4080d4a118b982311c471c23b0cc444be0da0694 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:27:12 +0200 Subject: [PATCH 457/967] Add parsing of locale character --- include/boost/decimal/fmt_format.hpp | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index e7d4a521f..0e0538ade 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -40,11 +41,19 @@ constexpr auto parse_impl(ParseContext &ctx) boost::decimal::chars_format fmt = boost::decimal::chars_format::general; bool is_upper = false; int padding_digits = 0; + bool use_locale = false; auto it {ctx.begin()}; if (it == nullptr) { - return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, it); + return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, use_locale, it); + } + + // Check for the locale character + if (*it == 'L') + { + use_locale = true; + ++it; } // Check for a sign character @@ -156,7 +165,7 @@ constexpr auto parse_impl(ParseContext &ctx) BOOST_DECIMAL_THROW_EXCEPTION(std::logic_error("Expected '}' in format string")); // LCOV_EXCL_LINE } - return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, it); + return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, use_locale, it); } template @@ -167,12 +176,14 @@ struct formatter int padding_digits; int ctx_precision; bool is_upper; + bool use_locale; constexpr formatter() : sign{sign_option::minus}, fmt{chars_format::general}, padding_digits{0}, ctx_precision{6}, - is_upper{false} {} + is_upper{false}, + use_locale{false} {} constexpr auto parse(fmt::format_parse_context &ctx) { @@ -183,8 +194,9 @@ struct formatter is_upper = std::get<2>(res); padding_digits = std::get<3>(res); sign = std::get<4>(res); + use_locale = std::get<5>(res); - return std::get<5>(res); + return std::get<6>(res); } template @@ -254,6 +266,11 @@ struct formatter s.insert(s.begin() + static_cast(has_sign), static_cast(padding_digits) - s.size(), '0'); } + if (use_locale) + { + convert_pointer_pair_to_local_locale(const_cast(s.data()), s.data() + s.size()); + } + return fmt::format_to(ctx.out(), "{}", s); } }; From 54e3f1a4d125fa84dc387bf601c8d9313da04a7e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:49:30 +0200 Subject: [PATCH 458/967] Add testing of different locales --- test/test_format_fmtlib.cpp | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index 4d2372a7b..1bb73b7f0 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -270,6 +270,25 @@ void test_cohort_preservation() } } +template +void test_locale_conversion(const char* locale, const std::string& result) +{ + try + { + const std::locale a(locale); + std::locale::global(a); + + const T value {112289, -2}; + BOOST_TEST_EQ(fmt::format("{:L.2f}", value), result); + } + // LCOV_EXCL_START + catch (...) + { + std::cerr << "Test not run" << std::endl; + } + // LCOV_EXCL_STOP +} + #ifdef _MSC_VER #pragma warning(pop) #endif @@ -315,6 +334,17 @@ int main() test_cohort_preservation(); test_cohort_preservation(); + #if !(defined(__GNUC__) && __GNUC__ >= 5 && defined(__APPLE__)) && !defined(BOOST_DECIMAL_QEMU_TEST) && !defined(BOOST_DECIMAL_DISABLE_EXCEPTIONS) && !defined(_MSC_VER) + + test_locale_conversion("en_US.UTF-8", "1,122.89"); + test_locale_conversion("de_DE.UTF-8", "1.122,89"); + + #if (defined(__clang__) && __clang_major__ > 9) || (defined(__GNUC__) && __GNUC__ > 9) + test_locale_conversion("fr_FR.UTF-8", "1 122,89"); + #endif + + #endif + return boost::report_errors(); } From 642867b8237f2c034ea2361380ea75162caa7e82 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:49:49 +0200 Subject: [PATCH 459/967] Adjust resulting string manipulation --- include/boost/decimal/fmt_format.hpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 0e0538ade..2f388fe08 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -268,7 +268,12 @@ struct formatter if (use_locale) { - convert_pointer_pair_to_local_locale(const_cast(s.data()), s.data() + s.size()); + // We need approximately 1/3 more space in order to insert the thousands separators, + // but after we have done our processing we need to shrink the string back down + const auto initial_length {s.length()}; + s.resize(s.length() * 4 / 3 + 1); + const auto offset {static_cast(convert_pointer_pair_to_local_locale(const_cast(s.data()), s.data() + s.length()))}; + s.resize(initial_length + offset); } return fmt::format_to(ctx.out(), "{}", s); From dffa335ca5a4e0f7bc01d664ebf4108a3a11f428 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:55:52 +0200 Subject: [PATCH 460/967] Add locale support to support --- include/boost/decimal/format.hpp | 27 ++++++++++++++++++++++++--- test/test_format.cpp | 30 ++++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 842461bfa..892ec2664 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -47,6 +47,14 @@ constexpr auto parse_impl(ParseContext &ctx) boost::decimal::chars_format fmt = boost::decimal::chars_format::general; bool is_upper = false; int padding_digits = 0; + bool use_locale = false; + + // Check for the locale character + if (*it == 'L') + { + use_locale = true; + ++it; + } // Check for a sign character if (it != ctx.end()) @@ -148,7 +156,7 @@ constexpr auto parse_impl(ParseContext &ctx) BOOST_DECIMAL_THROW_EXCEPTION(std::format_error("Expected '}' in format string")); // LCOV_EXCL_LINE } - return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, it); + return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, use_locale, it); } } // Namespace boost::decimal::detail @@ -163,12 +171,14 @@ struct formatter int ctx_precision; int padding_digits; bool is_upper; + bool use_locale; constexpr formatter() : fmt(boost::decimal::chars_format::general), sign(boost::decimal::detail::format_sign_option::minus), ctx_precision(6), padding_digits(0), - is_upper(false) + is_upper(false), + use_locale(false) {} constexpr auto parse(format_parse_context &ctx) @@ -180,8 +190,9 @@ struct formatter is_upper = std::get<2>(res); padding_digits = std::get<3>(res); sign = std::get<4>(res); + use_locale = std::get<5>(res); - return std::get<5>(res); + return std::get<6>(res); } template @@ -254,6 +265,16 @@ struct formatter s.insert(s.begin() + static_cast(has_sign), static_cast(padding_digits) - s.size(), '0'); } + if (use_locale) + { + // We need approximately 1/3 more space in order to insert the thousands separators, + // but after we have done our processing we need to shrink the string back down + const auto initial_length {s.length()}; + s.resize(s.length() * 4 / 3 + 1); + const auto offset {static_cast(convert_pointer_pair_to_local_locale(const_cast(s.data()), s.data() + s.length()))}; + s.resize(initial_length + offset); + } + return std::format_to(ctx.out(), "{}", s); } }; diff --git a/test/test_format.cpp b/test/test_format.cpp index 9d4159196..dd2bb381a 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -246,6 +246,25 @@ void test_cohort_preservation() } } +template +void test_locale_conversion(const char* locale, const std::string& result) +{ + try + { + const std::locale a(locale); + std::locale::global(a); + + const T value {112289, -2}; + BOOST_TEST_EQ(std::format("{:L.2f}", value), result); + } + // LCOV_EXCL_START + catch (...) + { + std::cerr << "Test not run" << std::endl; + } + // LCOV_EXCL_STOP +} + int main() { test_general(); @@ -287,6 +306,17 @@ int main() test_cohort_preservation(); test_cohort_preservation(); + #if !(defined(__GNUC__) && __GNUC__ >= 5 && defined(__APPLE__)) && !defined(BOOST_DECIMAL_QEMU_TEST) && !defined(BOOST_DECIMAL_DISABLE_EXCEPTIONS) && !defined(_MSC_VER) + + test_locale_conversion("en_US.UTF-8", "1,122.89"); + test_locale_conversion("de_DE.UTF-8", "1.122,89"); + + #if (defined(__clang__) && __clang_major__ > 9) || (defined(__GNUC__) && __GNUC__ > 9) + test_locale_conversion("fr_FR.UTF-8", "1 122,89"); + #endif + + #endif + return boost::report_errors(); } From ed5b886f174f8175eac6ce5ed0f47af9dca084b3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 07:58:17 +0200 Subject: [PATCH 461/967] Add sign modifier to docs --- doc/modules/ROOT/pages/format.adoc | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index 25f1e2ce3..edd40b52e 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -15,6 +15,16 @@ Boost.Decimal supports formatting with both `` (when C++20 and header ar Format is supported when using C++20 and a compiler with appropriate support: GCC >= 13, Clang >= 18, MSVC >= 19.40 +=== Sign Modifier + +|=== +| Modifier | Format +| "+" | All values will have a sign +| "-" | Only negative values have a sign +| " " | Positive values have a leading space, +Negative have a minus sign +|=== + === Type Modifiers The following type modifiers are the same as those used by built-in floating point values: From 7b98b12071278c4830bf005bd1045bd1570543b1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 08:01:06 +0200 Subject: [PATCH 462/967] Document locale specifier --- doc/modules/ROOT/pages/format.adoc | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index edd40b52e..30e6aabd6 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -15,6 +15,19 @@ Boost.Decimal supports formatting with both `` (when C++20 and header ar Format is supported when using C++20 and a compiler with appropriate support: GCC >= 13, Clang >= 18, MSVC >= 19.40 +=== Locale Modifier + +If a format string begins with "L" the current global locale will be applied. +This can be set as so: + +[source, c++] +---- +// Locale can be any valid locale that is installed on your system +const char* locale = "de_DE.UTF-8"; +const std::locale a(locale); +std::locale::global(a); +---- + === Sign Modifier |=== From fe21609f8aa3a695777a80bcfa493d463e2e7443 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 08:02:49 +0200 Subject: [PATCH 463/967] Document the correct order of format strings --- doc/modules/ROOT/pages/format.adoc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index 30e6aabd6..ae8600d95 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -70,6 +70,12 @@ For example with `{:10.3e}`: Note the space at the front of these string to keep with width at 10 characters +=== Putting it All Together + +The appropriate order for the full format specifier is: + +Locale, Sign, Padding, Precision, Type + === Examples The example is padding modifiers can be done like so From cfd667baf2a6adee8eafff0aaa70e461c3ba1a37 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 13:21:41 +0200 Subject: [PATCH 464/967] Fix missing function decl --- include/boost/decimal/format.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 892ec2664..eb32d2723 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -12,6 +12,7 @@ #define BOOST_DECIMAL_HAS_FORMAT_SUPPORT #include +#include #include #include #include From ed07eb2a7ea1fd989730a5224b04288a0100b3b8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 09:39:45 +0200 Subject: [PATCH 465/967] Fix parsing of arbitrary character types --- include/boost/decimal/fmt_format.hpp | 42 +++++++++++++++------------- 1 file changed, 22 insertions(+), 20 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 2f388fe08..a606a08fa 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -36,6 +36,8 @@ enum class sign_option template constexpr auto parse_impl(ParseContext &ctx) { + using CharType = typename ParseContext::char_type; + auto sign_character = sign_option::minus; int ctx_precision = -1; boost::decimal::chars_format fmt = boost::decimal::chars_format::general; @@ -50,7 +52,7 @@ constexpr auto parse_impl(ParseContext &ctx) } // Check for the locale character - if (*it == 'L') + if (*it == static_cast('L')) { use_locale = true; ++it; @@ -61,15 +63,15 @@ constexpr auto parse_impl(ParseContext &ctx) { switch (*it) { - case '-': + case static_cast('-'): sign_character = sign_option::minus; ++it; break; - case '+': + case static_cast('+'): sign_character = sign_option::plus; ++it; break; - case ' ': + case static_cast(' '): sign_character = sign_option::space; ++it; break; @@ -79,20 +81,20 @@ constexpr auto parse_impl(ParseContext &ctx) } // Check for a padding character - while (it != ctx.end() && *it >= '0' && *it <= '9') + while (it != ctx.end() && *it >= static_cast('0') && *it <= static_cast('9')) { - padding_digits = padding_digits * 10 + (*it - '0'); + padding_digits = padding_digits * 10 + (*it - static_cast('0')); ++it; } // If there is a . then we need to capture the precision argument - if (it != ctx.end() && *it == '.') + if (it != ctx.end() && *it == static_cast('.')) { ++it; ctx_precision = 0; - while (it != ctx.end() && *it >= '0' && *it <= '9') + while (it != ctx.end() && *it >= static_cast('0') && *it <= static_cast('9')) { - ctx_precision = ctx_precision * 10 + (*it - '0'); + ctx_precision = ctx_precision * 10 + (*it - static_cast('0')); ++it; } } @@ -102,39 +104,39 @@ constexpr auto parse_impl(ParseContext &ctx) { switch (*it) { - case 'G': + case static_cast('G'): is_upper = true; fmt = chars_format::general; break; - case 'g': + case static_cast('g'): fmt = chars_format::general; break; - case 'F': + case static_cast('F'): is_upper = true; fmt = chars_format::fixed; break; - case 'f': + case static_cast('f'): fmt = chars_format::fixed; break; - case 'E': + case static_cast('E'): is_upper = true; fmt = chars_format::scientific; break; - case 'e': + case static_cast('e'): fmt = chars_format::scientific; break; - case 'X': + case static_cast('X'): is_upper = true; fmt = chars_format::hex; break; - case 'x': + case static_cast('x'): fmt = chars_format::hex; break; - case 'A': + case static_cast('A'): if (ctx_precision != -1) { BOOST_DECIMAL_THROW_EXCEPTION(std::logic_error("Cohort preservation is mutually exclusive with precision")); @@ -143,7 +145,7 @@ constexpr auto parse_impl(ParseContext &ctx) is_upper = true; fmt = chars_format::cohort_preserving_scientific; break; - case 'a': + case static_cast('a'): if (ctx_precision != -1) { BOOST_DECIMAL_THROW_EXCEPTION(std::logic_error("Cohort preservation is mutually exclusive with precision")); @@ -160,7 +162,7 @@ constexpr auto parse_impl(ParseContext &ctx) } // Verify we're at the closing brace - if (it != ctx.end() && *it != '}') + if (it != ctx.end() && *it != static_cast('}')) { BOOST_DECIMAL_THROW_EXCEPTION(std::logic_error("Expected '}' in format string")); // LCOV_EXCL_LINE } From 10a7d658707cf1a725aff74b40cea5f9629b92a4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 12:00:43 +0200 Subject: [PATCH 466/967] Allow parse of arbitrary char type --- include/boost/decimal/fmt_format.hpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index a606a08fa..04315f962 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -187,7 +187,8 @@ struct formatter is_upper{false}, use_locale{false} {} - constexpr auto parse(fmt::format_parse_context &ctx) + template + constexpr auto parse(fmt::parse_context &ctx) { const auto res {boost::decimal::detail::fmt_detail::parse_impl(ctx)}; From 87536a2f56dfc01313cbca163c97e49fe0a7e7ad Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 12:19:18 +0200 Subject: [PATCH 467/967] Add formatter support for wchar_t and others --- include/boost/decimal/fmt_format.hpp | 31 +++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 04315f962..3dc32df61 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -11,6 +11,7 @@ #include #include +#include #include #include #include @@ -205,6 +206,8 @@ struct formatter template auto format(const T& v, FormatContext& ctx) const { + using CharType = typename FormatContext::char_type; + std::array buffer {}; auto buffer_front = buffer.data(); bool has_sign {false}; @@ -279,7 +282,33 @@ struct formatter s.resize(initial_length + offset); } - return fmt::format_to(ctx.out(), "{}", s); + BOOST_DECIMAL_IF_CONSTEXPR (std::is_same::value) + { + return fmt::format_to(ctx.out(), "{}", s); + } + else BOOST_DECIMAL_IF_CONSTEXPR (std::is_same::value) + { + std::wstring result; + result.reserve(s.size()); + for (const char c : s) { + result.push_back(static_cast(static_cast(c))); + } + + return fmt::format_to(ctx.out(), L"{}", result); + } + else + { + // For other character types (char16_t, char32_t, etc.) + std::basic_string result; + result.reserve(s.size()); + for (const char c : s) { + result.push_back(static_cast(static_cast(c))); + } + + // Cannot use string literals for char16_t/char32_t directly + return fmt::format_to(ctx.out(), + std::basic_string_view(result)); + } } }; From 914a73111245a3916683400a5e34841eb11eeb0e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 12:19:32 +0200 Subject: [PATCH 468/967] Add explicit overloads for each type --- include/boost/decimal/fmt_format.hpp | 36 +++++++++++++++++++++++----- 1 file changed, 30 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 3dc32df61..42619b506 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -320,27 +320,51 @@ struct formatter namespace fmt { template <> -struct formatter +struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; template <> -struct formatter +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; template <> -struct formatter +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; template <> -struct formatter +struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; template <> -struct formatter +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; template <> -struct formatter +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; } // namespace fmt From 7ad642279f97e9305384f3e06b848c9c7ae9495f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 12:19:43 +0200 Subject: [PATCH 469/967] Add testing of wide strings --- test/test_format_fmtlib.cpp | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index 1bb73b7f0..d0ccd3ec6 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -289,6 +289,18 @@ void test_locale_conversion(const char* locale, const std::string& result) // LCOV_EXCL_STOP } +template +void test_wide_strings() +{ + BOOST_TEST(fmt::format(L"{}", T{1}) == L"1"); + BOOST_TEST(fmt::format(L"{}", T{10}) == L"10"); + BOOST_TEST(fmt::format(L"{}", T{100}) == L"100"); + BOOST_TEST(fmt::format(L"{}", T{1000}) == L"1000"); + BOOST_TEST(fmt::format(L"{}", T{10000}) == L"10000"); + BOOST_TEST(fmt::format(L"{}", T{210000}) == L"210000"); + BOOST_TEST(fmt::format(L"{}", T{2100000}) == L"2100000"); +} + #ifdef _MSC_VER #pragma warning(pop) #endif @@ -345,6 +357,13 @@ int main() #endif + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + return boost::report_errors(); } From 5a0d0cc733e1d2218e59c22afbf24d68b0d3d6ca Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 13:35:29 +0200 Subject: [PATCH 470/967] Require C++17 for wide literal support --- include/boost/decimal/fmt_format.hpp | 46 +++++++++++++++++++++++++--- test/test_format_fmtlib.cpp | 4 +++ 2 files changed, 46 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 42619b506..60c604fcd 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -206,8 +206,6 @@ struct formatter template auto format(const T& v, FormatContext& ctx) const { - using CharType = typename FormatContext::char_type; - std::array buffer {}; auto buffer_front = buffer.data(); bool has_sign {false}; @@ -282,11 +280,19 @@ struct formatter s.resize(initial_length + offset); } - BOOST_DECIMAL_IF_CONSTEXPR (std::is_same::value) + #ifdef BOOST_DECIMAL_NO_CXX17_IF_CONSTEXPR + + return fmt::format_to(ctx.out(), "{}", s); + + #else + + using CharType = typename FormatContext::char_type; + + if constexpr (std::is_same::value) { return fmt::format_to(ctx.out(), "{}", s); } - else BOOST_DECIMAL_IF_CONSTEXPR (std::is_same::value) + else if constexpr (std::is_same::value) { std::wstring result; result.reserve(s.size()); @@ -309,6 +315,8 @@ struct formatter return fmt::format_to(ctx.out(), std::basic_string_view(result)); } + + #endif // BOOST_DECIMAL_NO_CXX17_IF_CONSTEXPR } }; @@ -319,6 +327,34 @@ struct formatter namespace fmt { +#ifdef BOOST_DECIMAL_NO_CXX17_IF_CONSTEXPR + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +#else + template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; @@ -367,6 +403,8 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +#endif + } // namespace fmt #endif // __has_include() diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index d0ccd3ec6..cf9aeb7b9 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -292,6 +292,8 @@ void test_locale_conversion(const char* locale, const std::string& result) template void test_wide_strings() { + #ifndef BOOST_DECIMAL_NO_CXX17_IF_CONSTEXPR + BOOST_TEST(fmt::format(L"{}", T{1}) == L"1"); BOOST_TEST(fmt::format(L"{}", T{10}) == L"10"); BOOST_TEST(fmt::format(L"{}", T{100}) == L"100"); @@ -299,6 +301,8 @@ void test_wide_strings() BOOST_TEST(fmt::format(L"{}", T{10000}) == L"10000"); BOOST_TEST(fmt::format(L"{}", T{210000}) == L"210000"); BOOST_TEST(fmt::format(L"{}", T{2100000}) == L"2100000"); + + #endif } #ifdef _MSC_VER From 7869073f3b28d5418f74eb6b58d38911c3189b1f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 13:41:40 +0200 Subject: [PATCH 471/967] Expand support for char16_t and char32_t --- include/boost/decimal/fmt_format.hpp | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 60c604fcd..ee7d77538 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -288,15 +288,16 @@ struct formatter using CharType = typename FormatContext::char_type; - if constexpr (std::is_same::value) + if constexpr (std::is_same_v) { return fmt::format_to(ctx.out(), "{}", s); } - else if constexpr (std::is_same::value) + else if constexpr (std::is_same_v) { std::wstring result; result.reserve(s.size()); - for (const char c : s) { + for (const char c : s) + { result.push_back(static_cast(static_cast(c))); } @@ -305,15 +306,22 @@ struct formatter else { // For other character types (char16_t, char32_t, etc.) + std::basic_string result; result.reserve(s.size()); - for (const char c : s) { + for (const char c : s) + { result.push_back(static_cast(static_cast(c))); } - // Cannot use string literals for char16_t/char32_t directly - return fmt::format_to(ctx.out(), - std::basic_string_view(result)); + if constexpr (std::is_same_v) + { + return fmt::format_to(ctx.out(), u"{}", result); + } + else if constexpr (std::is_same_v) + { + return fmt::format_to(ctx.out(), U"{}", result); + } } #endif // BOOST_DECIMAL_NO_CXX17_IF_CONSTEXPR From e0883094e1fc41d8c31935beff1ac64c5ba9f97f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 13:53:30 +0200 Subject: [PATCH 472/967] Add testing of char16_t and char32_t {fmt} --- test/test_format_fmtlib.cpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index cf9aeb7b9..ce0fd5627 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -302,6 +302,22 @@ void test_wide_strings() BOOST_TEST(fmt::format(L"{}", T{210000}) == L"210000"); BOOST_TEST(fmt::format(L"{}", T{2100000}) == L"2100000"); + BOOST_TEST(fmt::format(u"{}", T{1}) == u"1"); + BOOST_TEST(fmt::format(u"{}", T{10}) == u"10"); + BOOST_TEST(fmt::format(u"{}", T{100}) == u"100"); + BOOST_TEST(fmt::format(u"{}", T{1000}) == u"1000"); + BOOST_TEST(fmt::format(u"{}", T{10000}) == u"10000"); + BOOST_TEST(fmt::format(u"{}", T{210000}) == u"210000"); + BOOST_TEST(fmt::format(u"{}", T{2100000}) == u"2100000"); + + BOOST_TEST(fmt::format(U"{}", T{1}) == U"1"); + BOOST_TEST(fmt::format(U"{}", T{10}) == U"10"); + BOOST_TEST(fmt::format(U"{}", T{100}) == U"100"); + BOOST_TEST(fmt::format(U"{}", T{1000}) == U"1000"); + BOOST_TEST(fmt::format(U"{}", T{10000}) == U"10000"); + BOOST_TEST(fmt::format(U"{}", T{210000}) == U"210000"); + BOOST_TEST(fmt::format(U"{}", T{2100000}) == U"2100000"); + #endif } From 86b1502f22d91d5d8970318de8fad7dcb729667c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 13:56:04 +0200 Subject: [PATCH 473/967] Add formatter overloads for char16_t and char32_t --- include/boost/decimal/fmt_format.hpp | 48 ++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index ee7d77538..90a276cc1 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -371,6 +371,14 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; @@ -379,6 +387,14 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; @@ -387,6 +403,14 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; @@ -395,6 +419,14 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; @@ -403,6 +435,14 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; @@ -411,6 +451,14 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + #endif } // namespace fmt From 42eec85be175b28c77ff2d34c7aed5763ff4d3b8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 14:14:20 +0200 Subject: [PATCH 474/967] Add char8_t detection macro --- include/boost/decimal/detail/config.hpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/boost/decimal/detail/config.hpp b/include/boost/decimal/detail/config.hpp index 5bd26614f..775801cfd 100644 --- a/include/boost/decimal/detail/config.hpp +++ b/include/boost/decimal/detail/config.hpp @@ -412,4 +412,8 @@ static_assert(std::is_same::value, "__float128 should b #endif +#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L +# define BOOST_DECIMAL_HAS_CHAR8_T +#endif + #endif // BOOST_DECIMAL_DETAIL_CONFIG_HPP From 5613e16ddf585e0b8837ce366312acb7bf398504 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 14:14:44 +0200 Subject: [PATCH 475/967] Add char8_t testing --- test/test_format_fmtlib.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index ce0fd5627..d0bae2d75 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -318,6 +318,19 @@ void test_wide_strings() BOOST_TEST(fmt::format(U"{}", T{210000}) == U"210000"); BOOST_TEST(fmt::format(U"{}", T{2100000}) == U"2100000"); + #ifdef BOOST_DECIMAL_HAS_CHAR8_T + + BOOST_TEST(fmt::format(u8"{}", T{1}) == u8"1"); + BOOST_TEST(fmt::format(u8"{}", T{10}) == u8"10"); + BOOST_TEST(fmt::format(u8"{}", T{100}) == u8"100"); + BOOST_TEST(fmt::format(u8"{}", T{1000}) == u8"1000"); + BOOST_TEST(fmt::format(u8"{}", T{10000}) == u8"10000"); + BOOST_TEST(fmt::format(u8"{}", T{210000}) == u8"210000"); + BOOST_TEST(fmt::format(u8"{}", T{2100000}) == u8"2100000"); + + + #endif // BOOST_DECIMAL_HAS_CHAR8_T + #endif } From c1603b6ff1991a3f93c08f15e4b663b41a375ddf Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 14:15:01 +0200 Subject: [PATCH 476/967] Add char8_t handling --- include/boost/decimal/fmt_format.hpp | 41 ++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 90a276cc1..d12ba3145 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -322,6 +322,19 @@ struct formatter { return fmt::format_to(ctx.out(), U"{}", result); } + #ifdef BOOST_DECIMAL_HAS_CHAR8_T + else + { + static_assert(std::is_same_v, "Unsupported wide character type"); + return fmt::format_to(ctx.out(), u8"{}", result); + } + #else + else + { + static_assert(std::is_same_v, "Unsupported wide character type"); + return fmt::format_to(ctx.out(), u8"{}", result); + } + #endif } #endif // BOOST_DECIMAL_NO_CXX17_IF_CONSTEXPR @@ -459,6 +472,34 @@ template <> struct formatter : public boost::decimal::detail::fmt_detail::formatter {}; +#ifdef BOOST_DECIMAL_HAS_CHAR8_T + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +template <> +struct formatter + : public boost::decimal::detail::fmt_detail::formatter {}; + +#endif // BOOST_DECIMAL_HAS_CHAR8_T + #endif } // namespace fmt From 524a5836748b8e5baaf3cbede80f621f59660ab9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 24 Oct 2025 14:21:47 +0200 Subject: [PATCH 477/967] Add doc on the support for other string literals --- doc/modules/ROOT/pages/format.adoc | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index ae8600d95..004d9eebe 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -70,11 +70,18 @@ For example with `{:10.3e}`: Note the space at the front of these string to keep with width at 10 characters +=== String Literal Support + +If you want the result to be a different string width than `char` you can specify this with the format string. +For example if you want the result to be `wchar_t` you can use `L"{}"`. +`wchar_t`, `char16_t`, `char32_t` are supported from pass:[C++17]. +`char8_t` is supported from pass:[C++20]. + === Putting it All Together The appropriate order for the full format specifier is: -Locale, Sign, Padding, Precision, Type +String literal pass:["{Locale, Sign, Padding, Precision, Type}"] === Examples From 53f2d91f5eda017bdd25804904fd34b56898c70b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 13:07:09 +0100 Subject: [PATCH 478/967] Ignore float equal warning propagating up from {fmt} --- include/boost/decimal/fmt_format.hpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index d12ba3145..3eb239081 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -9,9 +9,19 @@ #define BOOST_DECIMAL_HAS_FMTLIB_SUPPORT +#ifdef __GNUC__ +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wfloat-equal" +#endif + #include #include #include + +#ifdef __GNUC__ +# pragma GCC diagnostic pop +#endif + #include #include #include From 717d4d0109b473017e0e2321dfb21315da6cf4a1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 13:08:24 +0100 Subject: [PATCH 479/967] Fix module build with {fmt} module --- include/boost/decimal/fmt_format.hpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 3eb239081..5dfbec771 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -25,6 +25,9 @@ #include #include #include + +#ifndef BOOST_DECIMAL_BUILD_MODULE + #include #include #include @@ -32,6 +35,8 @@ #include #include +#endif // BOOST_DECIMAL_BUILD_MODULE + namespace boost { namespace decimal { namespace detail { From db8b8dda5c26c36f1e7579ba21070eae4572a0d1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 13:32:52 +0100 Subject: [PATCH 480/967] Add character support to the parser --- include/boost/decimal/format.hpp | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index eb32d2723..2c412bdda 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -42,6 +42,8 @@ enum class format_sign_option template constexpr auto parse_impl(ParseContext &ctx) { + using CharType = typename ParseContext::char_type; + auto sign_character = format_sign_option::minus; auto it {ctx.begin()}; int ctx_precision = -1; @@ -51,7 +53,7 @@ constexpr auto parse_impl(ParseContext &ctx) bool use_locale = false; // Check for the locale character - if (*it == 'L') + if (*it == static_cast('L')) { use_locale = true; ++it; @@ -62,15 +64,15 @@ constexpr auto parse_impl(ParseContext &ctx) { switch (*it) { - case '-': + case static_cast('-'): sign_character = format_sign_option::minus; ++it; break; - case '+': + case static_cast('+'): sign_character = format_sign_option::plus; ++it; break; - case ' ': + case static_cast(' '): sign_character = format_sign_option::space; ++it; break; @@ -80,26 +82,26 @@ constexpr auto parse_impl(ParseContext &ctx) } // Check for a padding character - while (it != ctx.end() && *it >= '0' && *it <= '9') + while (it != ctx.end() && *it >= static_cast('0') && *it <= static_cast('9')) { - padding_digits = padding_digits * 10 + (*it - '0'); + padding_digits = padding_digits * 10 + (*it - static_cast('0')); ++it; } // If there is a . then we need to capture the precision argument - if (it != ctx.end() && *it == '.') + if (it != ctx.end() && *it == static_cast('.')) { ++it; ctx_precision = 0; - while (it != ctx.end() && *it >= '0' && *it <= '9') + while (it != ctx.end() && *it >= static_cast('0') && *it <= static_cast('9')) { - ctx_precision = ctx_precision * 10 + (*it - '0'); + ctx_precision = ctx_precision * 10 + (*it - static_cast('0')); ++it; } } // Lastly we capture the format to include if it's upper case - if (it != ctx.end() && *it != '}') + if (it != ctx.end() && *it != static_cast('}')) { switch (*it) { @@ -152,7 +154,7 @@ constexpr auto parse_impl(ParseContext &ctx) } // Verify we're at the closing brace - if (it != ctx.end() && *it != '}') + if (it != ctx.end() && *it != static_cast('}')) { BOOST_DECIMAL_THROW_EXCEPTION(std::format_error("Expected '}' in format string")); // LCOV_EXCL_LINE } From f3b2fe2c7fdf18a96cc4c85084c069825bbf3058 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 13:44:18 +0100 Subject: [PATCH 481/967] Change base parser to use arbitrary character type --- include/boost/decimal/format.hpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 2c412bdda..c4f2c88fd 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -184,7 +184,8 @@ struct formatter use_locale(false) {} - constexpr auto parse(format_parse_context &ctx) + template + constexpr auto parse(basic_format_parse_context& ctx) { const auto res {boost::decimal::detail::parse_impl(ctx)}; From 040412c254a8a0b2b9723c610825020a9fc5f0b5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 13:57:54 +0100 Subject: [PATCH 482/967] Improve message for unsupported character types --- include/boost/decimal/format.hpp | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index c4f2c88fd..109c60707 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -162,6 +162,27 @@ constexpr auto parse_impl(ParseContext &ctx) return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, use_locale, it); } +template +struct formattable_character_type : std::false_type {}; + +template <> +struct formattable_character_type : std::true_type {}; + +template <> +struct formattable_character_type : std::true_type {}; + +template <> +struct formattable_character_type : std::true_type {}; + +template <> +struct formattable_character_type : std::true_type {}; + +template <> +struct formattable_character_type : std::true_type {}; + +template +inline constexpr bool is_formattable_character_type_v = formattable_character_type::value; + } // Namespace boost::decimal::detail namespace std { @@ -187,6 +208,8 @@ struct formatter template constexpr auto parse(basic_format_parse_context& ctx) { + static_assert(boost::decimal::detail::is_formattable_character_type_v, "This is an unsupported character type. Only the following can be used: char, char8_t, char16_t, char32_t, or wchar_t"); + const auto res {boost::decimal::detail::parse_impl(ctx)}; ctx_precision = std::get<0>(res); From 0518f10bdf09384678615c600ca0095020e94ef0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:03:43 +0100 Subject: [PATCH 483/967] Add output formatting to all character types --- include/boost/decimal/format.hpp | 42 +++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 109c60707..cc46b8105 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -225,6 +225,7 @@ struct formatter template auto format(const T &v, FormatContext &ctx) const { + using CharType = FormatContext::char_type; using namespace boost::decimal; using namespace boost::decimal::detail; @@ -302,7 +303,46 @@ struct formatter s.resize(initial_length + offset); } - return std::format_to(ctx.out(), "{}", s); + if constexpr (std::is_same_v) + { + return std::format_to(ctx.out(), "{}", s); + } + else if constexpr (std::is_same_v) + { + std::wstring result; + result.reserve(s.size()); + for (const char c : s) + { + result.push_back(static_cast(static_cast(c))); + } + + return std::format_to(ctx.out(), L"{}", result); + } + else + { + // For other character types (char16_t, char32_t, etc.) + + std::basic_string result; + result.reserve(s.size()); + for (const char c : s) + { + result.push_back(static_cast(static_cast(c))); + } + + if constexpr (std::is_same_v) + { + return std::format_to(ctx.out(), u"{}", result); + } + else if constexpr (std::is_same_v) + { + return std::format_to(ctx.out(), U"{}", result); + } + else + { + static_assert(std::is_same_v, "Unsupported wide character type"); + return std::format_to(ctx.out(), u8"{}", result); + } + } } }; From 4b4d564c1b9b0b3827bb3e373a3433f0c1032a05 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:06:23 +0100 Subject: [PATCH 484/967] Use same unsupported character type warning --- include/boost/decimal/format.hpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index cc46b8105..52652a01c 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -225,10 +225,12 @@ struct formatter template auto format(const T &v, FormatContext &ctx) const { - using CharType = FormatContext::char_type; using namespace boost::decimal; using namespace boost::decimal::detail; + using CharType = FormatContext::char_type; + static_assert(is_formattable_character_type_v, "This is an unsupported character type. Only the following can be used: char, char8_t, char16_t, char32_t, or wchar_t"); + std::array buffer {}; auto buffer_front = buffer.data(); bool has_sign {false}; @@ -339,7 +341,6 @@ struct formatter } else { - static_assert(std::is_same_v, "Unsupported wide character type"); return std::format_to(ctx.out(), u8"{}", result); } } From d450d6bfb881599016ccd671804395783d096ff3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:17:21 +0100 Subject: [PATCH 485/967] Add wide string formatting tests --- test/test_format.cpp | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/test/test_format.cpp b/test/test_format.cpp index dd2bb381a..86274ce7b 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -265,6 +265,42 @@ void test_locale_conversion(const char* locale, const std::string& result) // LCOV_EXCL_STOP } +template +void test_wide_strings() +{ + BOOST_TEST(std::format(L"{}", T{1}) == L"1"); + BOOST_TEST(std::format(L"{}", T{10}) == L"10"); + BOOST_TEST(std::format(L"{}", T{100}) == L"100"); + BOOST_TEST(std::format(L"{}", T{1000}) == L"1000"); + BOOST_TEST(std::format(L"{}", T{10000}) == L"10000"); + BOOST_TEST(std::format(L"{}", T{210000}) == L"210000"); + BOOST_TEST(std::format(L"{}", T{2100000}) == L"2100000"); + + BOOST_TEST(std::format(u"{}", T{1}) == u"1"); + BOOST_TEST(std::format(u"{}", T{10}) == u"10"); + BOOST_TEST(std::format(u"{}", T{100}) == u"100"); + BOOST_TEST(std::format(u"{}", T{1000}) == u"1000"); + BOOST_TEST(std::format(u"{}", T{10000}) == u"10000"); + BOOST_TEST(std::format(u"{}", T{210000}) == u"210000"); + BOOST_TEST(std::format(u"{}", T{2100000}) == u"2100000"); + + BOOST_TEST(std::format(U"{}", T{1}) == U"1"); + BOOST_TEST(std::format(U"{}", T{10}) == U"10"); + BOOST_TEST(std::format(U"{}", T{100}) == U"100"); + BOOST_TEST(std::format(U"{}", T{1000}) == U"1000"); + BOOST_TEST(std::format(U"{}", T{10000}) == U"10000"); + BOOST_TEST(std::format(U"{}", T{210000}) == U"210000"); + BOOST_TEST(std::format(U"{}", T{2100000}) == U"2100000"); + + BOOST_TEST(std::format(u8"{}", T{1}) == u8"1"); + BOOST_TEST(std::format(u8"{}", T{10}) == u8"10"); + BOOST_TEST(std::format(u8"{}", T{100}) == u8"100"); + BOOST_TEST(std::format(u8"{}", T{1000}) == u8"1000"); + BOOST_TEST(std::format(u8"{}", T{10000}) == u8"10000"); + BOOST_TEST(std::format(u8"{}", T{210000}) == u8"210000"); + BOOST_TEST(std::format(u8"{}", T{2100000}) == u8"2100000"); +} + int main() { test_general(); @@ -317,6 +353,13 @@ int main() #endif + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + test_wide_strings(); + return boost::report_errors(); } From cfa877504038b856727ad6453cda86bcc43c3131 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:38:04 +0100 Subject: [PATCH 486/967] std::format only supports char and wchar_t --- include/boost/decimal/format.hpp | 36 ++------------------------------ test/test_format.cpp | 24 --------------------- 2 files changed, 2 insertions(+), 58 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 52652a01c..e81bf7573 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -171,15 +171,6 @@ struct formattable_character_type : std::true_type {}; template <> struct formattable_character_type : std::true_type {}; -template <> -struct formattable_character_type : std::true_type {}; - -template <> -struct formattable_character_type : std::true_type {}; - -template <> -struct formattable_character_type : std::true_type {}; - template inline constexpr bool is_formattable_character_type_v = formattable_character_type::value; @@ -305,11 +296,12 @@ struct formatter s.resize(initial_length + offset); } + // std only supports char and wchar_t if constexpr (std::is_same_v) { return std::format_to(ctx.out(), "{}", s); } - else if constexpr (std::is_same_v) + else { std::wstring result; result.reserve(s.size()); @@ -320,30 +312,6 @@ struct formatter return std::format_to(ctx.out(), L"{}", result); } - else - { - // For other character types (char16_t, char32_t, etc.) - - std::basic_string result; - result.reserve(s.size()); - for (const char c : s) - { - result.push_back(static_cast(static_cast(c))); - } - - if constexpr (std::is_same_v) - { - return std::format_to(ctx.out(), u"{}", result); - } - else if constexpr (std::is_same_v) - { - return std::format_to(ctx.out(), U"{}", result); - } - else - { - return std::format_to(ctx.out(), u8"{}", result); - } - } } }; diff --git a/test/test_format.cpp b/test/test_format.cpp index 86274ce7b..2d0286ce2 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -275,30 +275,6 @@ void test_wide_strings() BOOST_TEST(std::format(L"{}", T{10000}) == L"10000"); BOOST_TEST(std::format(L"{}", T{210000}) == L"210000"); BOOST_TEST(std::format(L"{}", T{2100000}) == L"2100000"); - - BOOST_TEST(std::format(u"{}", T{1}) == u"1"); - BOOST_TEST(std::format(u"{}", T{10}) == u"10"); - BOOST_TEST(std::format(u"{}", T{100}) == u"100"); - BOOST_TEST(std::format(u"{}", T{1000}) == u"1000"); - BOOST_TEST(std::format(u"{}", T{10000}) == u"10000"); - BOOST_TEST(std::format(u"{}", T{210000}) == u"210000"); - BOOST_TEST(std::format(u"{}", T{2100000}) == u"2100000"); - - BOOST_TEST(std::format(U"{}", T{1}) == U"1"); - BOOST_TEST(std::format(U"{}", T{10}) == U"10"); - BOOST_TEST(std::format(U"{}", T{100}) == U"100"); - BOOST_TEST(std::format(U"{}", T{1000}) == U"1000"); - BOOST_TEST(std::format(U"{}", T{10000}) == U"10000"); - BOOST_TEST(std::format(U"{}", T{210000}) == U"210000"); - BOOST_TEST(std::format(U"{}", T{2100000}) == U"2100000"); - - BOOST_TEST(std::format(u8"{}", T{1}) == u8"1"); - BOOST_TEST(std::format(u8"{}", T{10}) == u8"10"); - BOOST_TEST(std::format(u8"{}", T{100}) == u8"100"); - BOOST_TEST(std::format(u8"{}", T{1000}) == u8"1000"); - BOOST_TEST(std::format(u8"{}", T{10000}) == u8"10000"); - BOOST_TEST(std::format(u8"{}", T{210000}) == u8"210000"); - BOOST_TEST(std::format(u8"{}", T{2100000}) == u8"2100000"); } int main() From 3b1df75a55d536a9302db817483ba5358a0cd56b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:38:25 +0100 Subject: [PATCH 487/967] Add second template parameter --- include/boost/decimal/format.hpp | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index e81bf7573..4e6ed7d96 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -178,8 +178,9 @@ inline constexpr bool is_formattable_character_type_v = formattable_character_ty namespace std { -template -struct formatter +template + requires boost::decimal::detail::is_formattable_character_type_v +struct formatter { boost::decimal::chars_format fmt; boost::decimal::detail::format_sign_option sign; @@ -196,11 +197,8 @@ struct formatter use_locale(false) {} - template - constexpr auto parse(basic_format_parse_context& ctx) + constexpr auto parse(basic_format_parse_context& ctx) { - static_assert(boost::decimal::detail::is_formattable_character_type_v, "This is an unsupported character type. Only the following can be used: char, char8_t, char16_t, char32_t, or wchar_t"); - const auto res {boost::decimal::detail::parse_impl(ctx)}; ctx_precision = std::get<0>(res); From 9a5ec7d90a0884b806cb30623fecd2f074e84e2c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:42:43 +0100 Subject: [PATCH 488/967] Fix supported range for char8_t --- doc/modules/ROOT/pages/format.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index 004d9eebe..d390d0def 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -75,7 +75,7 @@ Note the space at the front of these string to keep with width at 10 characters If you want the result to be a different string width than `char` you can specify this with the format string. For example if you want the result to be `wchar_t` you can use `L"{}"`. `wchar_t`, `char16_t`, `char32_t` are supported from pass:[C++17]. -`char8_t` is supported from pass:[C++20]. +`char8_t` is supported from pass:[C++23]. === Putting it All Together From 6ec729810bf66ac0c1db0d80de742cad5a8844b1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:42:57 +0100 Subject: [PATCH 489/967] Add note on std::format support being more limited --- doc/modules/ROOT/pages/format.adoc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index d390d0def..ce7e746ca 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -77,6 +77,8 @@ For example if you want the result to be `wchar_t` you can use `L"{}"`. `wchar_t`, `char16_t`, `char32_t` are supported from pass:[C++17]. `char8_t` is supported from pass:[C++23]. +IMPORTANT: `std::format` only supports `char` and `wchar_t` types per the pass:[C++] specification. + === Putting it All Together The appropriate order for the full format specifier is: From 58792229f67e1d8001ff4d960cecb5fd09430c9f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Sun, 26 Oct 2025 14:48:08 +0100 Subject: [PATCH 490/967] Fix static assert message --- include/boost/decimal/format.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 4e6ed7d96..fad368b66 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -218,7 +218,7 @@ struct formatter using namespace boost::decimal::detail; using CharType = FormatContext::char_type; - static_assert(is_formattable_character_type_v, "This is an unsupported character type. Only the following can be used: char, char8_t, char16_t, char32_t, or wchar_t"); + static_assert(is_formattable_character_type_v, "This is an unsupported character type. Only char and wchar_t can be used with std::format"); std::array buffer {}; auto buffer_front = buffer.data(); From 961ff887dc35c2a4f88ddb47d3c35ee2982392d4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 27 Oct 2025 10:35:43 +0100 Subject: [PATCH 491/967] Ignore dectest folder --- .gitignore | 1 + 1 file changed, 1 insertion(+) diff --git a/.gitignore b/.gitignore index 8f58ef916..00efe9f03 100644 --- a/.gitignore +++ b/.gitignore @@ -39,6 +39,7 @@ test/tidy/err/ test/tidy/tmp/ cmake-build-debug/ test/metal/bin/ +test/decimal-dectest/ # Modules *.gcm From 5ed412983e47b12635da99364311a04e979e94a1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 27 Oct 2025 17:09:19 +0100 Subject: [PATCH 492/967] Add testing of the separate dectest repo --- test/CMakeLists.txt | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt index b1fa1998d..5f1e8fbbd 100644 --- a/test/CMakeLists.txt +++ b/test/CMakeLists.txt @@ -7,17 +7,25 @@ include(BoostTestJamfile OPTIONAL RESULT_VARIABLE HAVE_BOOST_TEST) if(HAVE_BOOST_TEST) - find_package(fmt) - find_package(bson 2.0.2 CONFIG) - if(fmt_FOUND AND bson_FOUND) - message(STATUS "Boost.Decimal: Test with fmtlib and bson") - boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt bson::bson COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT BOOST_DECIMAL_TEST_BSON) - elseif(fmt_FOUND) - message(STATUS "Boost.Decimal: Test with fmtlib") - boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT) + if(BUILD_DECTEST_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/decimal-dectest/CMakeLists.txt") + + add_subdirectory(decimal-dectest) + else() - message(STATUS "Boost.Decimal: Test without fmtlib and bson") - boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random) + + find_package(fmt) + find_package(bson 2.0.2 CONFIG) + if(fmt_FOUND AND bson_FOUND) + message(STATUS "Boost.Decimal: Test with fmtlib and bson") + boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt bson::bson COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT BOOST_DECIMAL_TEST_BSON) + elseif(fmt_FOUND) + message(STATUS "Boost.Decimal: Test with fmtlib") + boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT) + else() + message(STATUS "Boost.Decimal: Test without fmtlib and bson") + boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random) + endif() + endif() endif() From 0fe5293ece63fe8c64fab0a8d396bb9d6897beaf Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 28 Oct 2025 09:21:14 +0100 Subject: [PATCH 493/967] Move locale parsing to last step --- include/boost/decimal/fmt_format.hpp | 14 +++++++------- test/test_format_fmtlib.cpp | 2 +- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index 5dfbec771..b6bd16971 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -67,13 +67,6 @@ constexpr auto parse_impl(ParseContext &ctx) return std::make_tuple(ctx_precision, fmt, is_upper, padding_digits, sign_character, use_locale, it); } - // Check for the locale character - if (*it == static_cast('L')) - { - use_locale = true; - ++it; - } - // Check for a sign character if (it != ctx.end()) { @@ -177,6 +170,13 @@ constexpr auto parse_impl(ParseContext &ctx) ++it; } + // Check for the locale character + if (it != ctx.end() && *it == static_cast('L')) + { + use_locale = true; + ++it; + } + // Verify we're at the closing brace if (it != ctx.end() && *it != static_cast('}')) { diff --git a/test/test_format_fmtlib.cpp b/test/test_format_fmtlib.cpp index d0bae2d75..e664ae4b8 100644 --- a/test/test_format_fmtlib.cpp +++ b/test/test_format_fmtlib.cpp @@ -279,7 +279,7 @@ void test_locale_conversion(const char* locale, const std::string& result) std::locale::global(a); const T value {112289, -2}; - BOOST_TEST_EQ(fmt::format("{:L.2f}", value), result); + BOOST_TEST_EQ(fmt::format("{:.2fL}", value), result); } // LCOV_EXCL_START catch (...) From 29c8753b9afa62811970c9e1d45673c9de076a66 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 28 Oct 2025 09:21:20 +0100 Subject: [PATCH 494/967] Update docs --- doc/modules/ROOT/pages/format.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index ce7e746ca..e6a85f714 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -83,7 +83,7 @@ IMPORTANT: `std::format` only supports `char` and `wchar_t` types per the pass:[ The appropriate order for the full format specifier is: -String literal pass:["{Locale, Sign, Padding, Precision, Type}"] +String literal pass:["{Sign, Padding, Precision, Type, Locale}"] === Examples From 1205f957bf39a8d43f7d4f97b108e125504f47c0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 28 Oct 2025 09:22:11 +0100 Subject: [PATCH 495/967] Locale parsing is last step --- include/boost/decimal/format.hpp | 14 +++++++------- test/test_format.cpp | 2 +- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index fad368b66..8a740d581 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -52,13 +52,6 @@ constexpr auto parse_impl(ParseContext &ctx) int padding_digits = 0; bool use_locale = false; - // Check for the locale character - if (*it == static_cast('L')) - { - use_locale = true; - ++it; - } - // Check for a sign character if (it != ctx.end()) { @@ -153,6 +146,13 @@ constexpr auto parse_impl(ParseContext &ctx) ++it; } + // Check for the locale character + if (it != ctx.end() && *it == static_cast('L')) + { + use_locale = true; + ++it; + } + // Verify we're at the closing brace if (it != ctx.end() && *it != static_cast('}')) { diff --git a/test/test_format.cpp b/test/test_format.cpp index 2d0286ce2..430b268b8 100644 --- a/test/test_format.cpp +++ b/test/test_format.cpp @@ -255,7 +255,7 @@ void test_locale_conversion(const char* locale, const std::string& result) std::locale::global(a); const T value {112289, -2}; - BOOST_TEST_EQ(std::format("{:L.2f}", value), result); + BOOST_TEST_EQ(std::format("{:.2fL}", value), result); } // LCOV_EXCL_START catch (...) From 2d8886ff4097ba976d7ea69c91b506498bab1f0b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 28 Oct 2025 16:34:22 +0100 Subject: [PATCH 496/967] Add dectest testing --- .github/workflows/ci.yml | 58 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 997ec221f..db3b4e0c2 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -728,6 +728,64 @@ jobs: cd ../boost-root/__build__ ctest --output-on-failure --no-tests=error + posix-cmake-test-dectest: + strategy: + fail-fast: false + matrix: + include: + - os: ubuntu-24.04 + - os: macos-14 + - os: macos-15 + + runs-on: ${{matrix.os}} + + steps: + - uses: actions/checkout@v4 + + - name: Install packages + if: matrix.install + run: sudo apt install ${{matrix.install}} + + - name: Setup Boost + run: | + echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY + LIBRARY=${GITHUB_REPOSITORY#*/} + echo LIBRARY: $LIBRARY + echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV + echo GITHUB_BASE_REF: $GITHUB_BASE_REF + echo GITHUB_REF: $GITHUB_REF + REF=${GITHUB_BASE_REF:-$GITHUB_REF} + REF=${REF#refs/heads/} + echo REF: $REF + BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true + echo BOOST_BRANCH: $BOOST_BRANCH + cd .. + git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root + cd boost-root + mkdir -p libs/$LIBRARY + cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY + cd libs/$LIBRARY/test + git clone https://github.com/cppalliance/decimal-dectest + cd ../../../ + git submodule update --init tools/boostdep + python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" $LIBRARY + + - name: Configure + run: | + cd ../boost-root + mkdir __build__ && cd __build__ + cmake -DBOOST_INCLUDE_LIBRARIES=$LIBRARY -DBUILD_TESTING=ON -DBUILD_DECTEST_TESTING=ON .. + + - name: Build tests + run: | + cd ../boost-root/__build__ + cmake --build . --target tests + + - name: Run tests + run: | + cd ../boost-root/__build__ + ctest --output-on-failure --no-tests=error + posix-standalone-test: strategy: fail-fast: false From 0528a0d88d95e93bf833ddad96e3d5234b19d57d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 30 Oct 2025 12:11:55 +0100 Subject: [PATCH 497/967] Change handling of extremely large values --- include/boost/decimal/decimal64_t.hpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 35962a50e..fddb58efd 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -730,6 +730,22 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool is_negative) noexcept reduced_coeff *= detail::pow10(static_cast(offset)); *this = decimal64_t(reduced_coeff, exp, is_negative); } + else if (biased_exp > detail::max_biased_exp_v) + { + // Similar to subnormals, but for extremely large values + const auto available_space {detail::precision_v - coeff_digits}; + if (available_space >= exp_delta) + { + reduced_coeff *= detail::pow10(static_cast(available_space)); + exp -= available_space; + *this = decimal64_t(reduced_coeff, exp, is_negative); + } + else + { + bits_ = exp < 0 ? UINT64_C(0) : detail::d64_inf_mask; + bits_ |= is_negative ? detail::d64_sign_mask : UINT64_C(0); + } + } else { // Reset the value and make sure to preserve the sign of 0/inf From f6dd7fbc96c6af1b74b6857af17ba6b325e72ebe Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 30 Oct 2025 12:15:54 +0100 Subject: [PATCH 498/967] Flush true unrepresentable value to 0 --- include/boost/decimal/decimal64_t.hpp | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index fddb58efd..44a4e1a9a 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -704,7 +704,14 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool is_negative) noexcept const auto exp_delta {biased_exp - static_cast(detail::d64_max_biased_exponent)}; const auto digit_delta {coeff_digits - exp_delta}; - if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) + if (biased_exp < 0 && coeff_digits == 1) + { + // This needs to be flushed to 0 + // e.g. 7e-399 should not become 70e-398 + bits_ = UINT64_C(0); + bits_ |= is_negative ? detail::d64_sign_mask : UINT64_C(0); + } + else if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) { exp -= digit_delta; reduced_coeff *= detail::pow10(static_cast(digit_delta)); From 3582eb7c1eb8eeb40db19bc0048cd3fb12de4cb8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 30 Oct 2025 12:29:47 +0100 Subject: [PATCH 499/967] Add additional path for potential rounding into subnormal min --- include/boost/decimal/decimal64_t.hpp | 50 +++++++++++++++++++++++++-- 1 file changed, 47 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 44a4e1a9a..1ab4e0ddf 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -706,9 +706,53 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool is_negative) noexcept const auto digit_delta {coeff_digits - exp_delta}; if (biased_exp < 0 && coeff_digits == 1) { - // This needs to be flushed to 0 - // e.g. 7e-399 should not become 70e-398 - bits_ = UINT64_C(0); + // This needs to be flushed to 0 or rounded to subnormal min + // e.g. 7e-399 should not become 70e-398 but 7e-400 should become 0 + rounding_mode current_round_mode {_boost_decimal_global_rounding_mode}; + + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(coeff)) + { + current_round_mode = _boost_decimal_global_runtime_rounding_mode; + } + + #endif + + bool round {false}; + if (biased_exp == -1) + { + switch (current_round_mode) + { + case rounding_mode::fe_dec_to_nearest_from_zero: + case rounding_mode::fe_dec_to_nearest: + if (reduced_coeff >= 5U) + { + round = true; + } + break; + case rounding_mode::fe_dec_upward: + if (!is_negative && reduced_coeff != 0) + { + round = true; + } + break; + default: + round = false; + break; + } + } + + if (round) + { + // Subnormal min is just 1 + bits_ = UINT64_C(1); + } + else + { + bits_ = UINT64_C(0); + } + bits_ |= is_negative ? detail::d64_sign_mask : UINT64_C(0); } else if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) From 5014d774b9b8fc5156cc17406f6b4effc30f0678 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 30 Oct 2025 13:46:39 +0100 Subject: [PATCH 500/967] Replicate tests for decimal64_t --- test/Jamfile | 1 + test/github_issue_1174.cpp | 44 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+) create mode 100644 test/github_issue_1174.cpp diff --git a/test/Jamfile b/test/Jamfile index 9630fd4d4..514c61f65 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -75,6 +75,7 @@ run github_issue_1106.cpp ; run github_issue_1107.cpp ; run github_issue_1110.cpp ; run github_issue_1112.cpp ; +run github_issue_1174.cpp ; run link_1.cpp link_2.cpp link_3.cpp ; run quick.cpp ; diff --git a/test/github_issue_1174.cpp b/test/github_issue_1174.cpp new file mode 100644 index 000000000..164ef63cd --- /dev/null +++ b/test/github_issue_1174.cpp @@ -0,0 +1,44 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// See: https://github.com/cppalliance/decimal/issues/1174 +// +// The decTest tests only apply to decimal64_t so we need to cover the other two as well + +#include +#include +#include + +static std::mt19937_64 rng(42); +static std::uniform_int_distribution dist(1, 1); + +using namespace boost::decimal; + +template +void test(); + +template <> +void test() +{ + constexpr decimal64_t zero {0}; + constexpr auto sub_min {std::numeric_limits::denorm_min()}; + const decimal64_t a {dist(rng) * 7, -398}; + + BOOST_TEST_GT(a, zero); + + const decimal64_t b {dist(rng) * 7, -399}; + + BOOST_TEST_EQ(b, sub_min); // Should be rounded up + + const decimal64_t c {dist(rng) * 7, -400}; + + BOOST_TEST_EQ(c, zero); // Should be flushed to 0 +} + +int main() +{ + test(); + + return boost::report_errors(); +} From ba68f8ab7ff5efeaa2dc70a420dc23d09298c0b2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 08:45:33 +0100 Subject: [PATCH 501/967] Add derived 32-bit test set --- test/github_issue_1174.cpp | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/test/github_issue_1174.cpp b/test/github_issue_1174.cpp index 164ef63cd..d8cf729ac 100644 --- a/test/github_issue_1174.cpp +++ b/test/github_issue_1174.cpp @@ -18,6 +18,8 @@ using namespace boost::decimal; template void test(); +// These values are all from clamp.decTest +// The tests for decimal32_t and decimal128_t are derived from the values used here template <> void test() { @@ -36,9 +38,28 @@ void test() BOOST_TEST_EQ(c, zero); // Should be flushed to 0 } +template <> +void test() +{ + constexpr decimal32_t zero {0}; + constexpr auto sub_min {std::numeric_limits::denorm_min()}; + const decimal32_t a {dist(rng) * 7, -101}; + + BOOST_TEST_GT(a, zero); + + const decimal32_t b {dist(rng) * 7, -102}; + + BOOST_TEST_EQ(b, sub_min); + + const decimal32_t c {dist(rng) * 7, -103}; + + BOOST_TEST_EQ(c, zero); +} + int main() { test(); + test(); return boost::report_errors(); } From 5c4d5318add5a6583a33084094c28c2988a7f34f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 09:11:29 +0100 Subject: [PATCH 502/967] Apply changes to decimal32_t constructor --- include/boost/decimal/decimal32_t.hpp | 52 ++++++++++++++++++++++++++- 1 file changed, 51 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index a000fd526..b3d3919e3 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -710,7 +710,57 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool is_negative) noexcept const auto exp_delta {biased_exp - static_cast(detail::d32_max_biased_exponent)}; const auto digit_delta {coeff_digits - exp_delta}; - if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision) + if (biased_exp < 0 && coeff_digits == 1) + { + // This needs to be flushed to 0 or rounded to subnormal min + rounding_mode current_round_mode {_boost_decimal_global_rounding_mode}; + + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(coeff)) + { + current_round_mode = _boost_decimal_global_runtime_rounding_mode; + } + + #endif + + bool round {false}; + if (biased_exp == -1) + { + switch (current_round_mode) + { + case rounding_mode::fe_dec_to_nearest_from_zero: + case rounding_mode::fe_dec_to_nearest: + if (reduced_coeff >= 5U) + { + round = true; + } + break; + case rounding_mode::fe_dec_upward: + if (!is_negative && reduced_coeff != 0) + { + round = true; + } + break; + default: + round = false; + break; + } + } + + if (round) + { + // Subnormal min is just 1 + bits_ = UINT32_C(1); + } + else + { + bits_ = UINT32_C(0); + } + + bits_ |= is_negative ? detail::d32_sign_mask : UINT32_C(0); + } + else if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision) { exp -= digit_delta; reduced_coeff *= detail::pow10(static_cast(digit_delta)); From 1c452c5634ef8a5fa95682a4b5176f523bc44ea5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 09:11:41 +0100 Subject: [PATCH 503/967] Add fallthrough macro --- include/boost/decimal/detail/config.hpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/boost/decimal/detail/config.hpp b/include/boost/decimal/detail/config.hpp index 775801cfd..54d5e2c50 100644 --- a/include/boost/decimal/detail/config.hpp +++ b/include/boost/decimal/detail/config.hpp @@ -416,4 +416,14 @@ static_assert(std::is_same::value, "__float128 should b # define BOOST_DECIMAL_HAS_CHAR8_T #endif +#if defined(__has_cpp_attribute) && __has_cpp_attribute(fallthrough) >= 201603L +# define BOOST_DECIMAL_FALLTHROUGH [[fallthrough]]; +#elif defined(__clang__) +# define BOOST_DECIMAL_FALLTHROUGH [[clang::fallthrough]]; +#elif defined(__GNUC__) +# define BOOST_DECIMAL_FALLTHROUGH __attribute__ ((fallthrough)); +#else +# define BOOST_DECIMAL_FALLTHROUGH +#endif + #endif // BOOST_DECIMAL_DETAIL_CONFIG_HPP From 5bba71b66db352fec374ee1edfbdd39272a2425b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 09:12:07 +0100 Subject: [PATCH 504/967] Apply new macro to specific cases --- include/boost/decimal/decimal32_t.hpp | 1 + include/boost/decimal/decimal64_t.hpp | 1 + 2 files changed, 2 insertions(+) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index b3d3919e3..aa8cce3d3 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -730,6 +730,7 @@ constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool is_negative) noexcept switch (current_round_mode) { case rounding_mode::fe_dec_to_nearest_from_zero: + BOOST_DECIMAL_FALLTHROUGH case rounding_mode::fe_dec_to_nearest: if (reduced_coeff >= 5U) { diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 1ab4e0ddf..55acc7df3 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -725,6 +725,7 @@ constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool is_negative) noexcept switch (current_round_mode) { case rounding_mode::fe_dec_to_nearest_from_zero: + BOOST_DECIMAL_FALLTHROUGH case rounding_mode::fe_dec_to_nearest: if (reduced_coeff >= 5U) { From f20a39cc8becbe36f904451c34b87c7d47c7d9ed Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 15:28:13 +0100 Subject: [PATCH 505/967] Add decimal128_t test set --- test/github_issue_1174.cpp | 31 +++++++++++++++++++++++++------ 1 file changed, 25 insertions(+), 6 deletions(-) diff --git a/test/github_issue_1174.cpp b/test/github_issue_1174.cpp index d8cf729ac..d5fdab1e1 100644 --- a/test/github_issue_1174.cpp +++ b/test/github_issue_1174.cpp @@ -25,15 +25,15 @@ void test() { constexpr decimal64_t zero {0}; constexpr auto sub_min {std::numeric_limits::denorm_min()}; - const decimal64_t a {dist(rng) * 7, -398}; + const decimal64_t a {dist(rng) * 7, detail::etiny_v}; BOOST_TEST_GT(a, zero); - const decimal64_t b {dist(rng) * 7, -399}; + const decimal64_t b {dist(rng) * 7, detail::etiny_v - 1}; BOOST_TEST_EQ(b, sub_min); // Should be rounded up - const decimal64_t c {dist(rng) * 7, -400}; + const decimal64_t c {dist(rng) * 7, detail::etiny_v - 2}; BOOST_TEST_EQ(c, zero); // Should be flushed to 0 } @@ -43,15 +43,33 @@ void test() { constexpr decimal32_t zero {0}; constexpr auto sub_min {std::numeric_limits::denorm_min()}; - const decimal32_t a {dist(rng) * 7, -101}; + const decimal32_t a {dist(rng) * 7, detail::etiny_v}; BOOST_TEST_GT(a, zero); - const decimal32_t b {dist(rng) * 7, -102}; + const decimal32_t b {dist(rng) * 7, detail::etiny_v - 1}; BOOST_TEST_EQ(b, sub_min); - const decimal32_t c {dist(rng) * 7, -103}; + const decimal32_t c {dist(rng) * 7, detail::etiny_v - 2}; + + BOOST_TEST_EQ(c, zero); +} + +template <> +void test() +{ + constexpr decimal128_t zero {0}; + constexpr auto sub_min {std::numeric_limits::denorm_min()}; + const decimal128_t a {dist(rng) * 7, detail::etiny_v}; + + BOOST_TEST_GT(a, zero); + + const decimal128_t b {dist(rng) * 7, detail::etiny_v - 1}; + + BOOST_TEST_EQ(b, sub_min); + + const decimal128_t c {dist(rng) * 7, detail::etiny_v - 2}; BOOST_TEST_EQ(c, zero); } @@ -60,6 +78,7 @@ int main() { test(); test(); + test(); return boost::report_errors(); } From 89407241bcf5e7fa082de1d633c06601863f1654 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 15:28:44 +0100 Subject: [PATCH 506/967] Apply same workaround to decimal128 --- include/boost/decimal/decimal128_t.hpp | 53 +++++++++++++++++++++++++- 1 file changed, 52 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index f3452d65b..468076800 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -788,7 +788,58 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool is_negative) noexcep const auto exp_delta {biased_exp - static_cast(detail::d128_max_biased_exponent)}; const auto digit_delta {coeff_digits - exp_delta}; - if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) + if (biased_exp < 0 && coeff_digits == 1) + { + // This needs to be flushed to 0 or rounded to subnormal min + rounding_mode current_round_mode {_boost_decimal_global_rounding_mode}; + + #ifndef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION + + if (!BOOST_DECIMAL_IS_CONSTANT_EVALUATED(coeff)) + { + current_round_mode = _boost_decimal_global_runtime_rounding_mode; + } + + #endif + + bool round {false}; + if (biased_exp == -1) + { + switch (current_round_mode) + { + case rounding_mode::fe_dec_to_nearest_from_zero: + BOOST_DECIMAL_FALLTHROUGH + case rounding_mode::fe_dec_to_nearest: + if (reduced_coeff >= 5U) + { + round = true; + } + break; + case rounding_mode::fe_dec_upward: + if (!is_negative && reduced_coeff != 0U) + { + round = true; + } + break; + default: + round = false; + break; + } + } + + if (round) + { + // Subnormal min is just 1 + bits_ = UINT64_C(1); + } + else + { + bits_ = UINT64_C(0); + } + + bits_.high |= is_negative ? detail::d128_sign_mask : UINT64_C(0); + } + else if (digit_delta > 0 && coeff_digits + digit_delta <= detail::precision_v) { exp -= digit_delta; reduced_coeff *= detail::pow10(static_cast(digit_delta)); From d03921a6eae2668c8b3abbdc31f13e74e8f717e9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 15:40:13 +0100 Subject: [PATCH 507/967] Add additional subnormal generation --- test/github_issue_1174.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/test/github_issue_1174.cpp b/test/github_issue_1174.cpp index d5fdab1e1..34d75e8d2 100644 --- a/test/github_issue_1174.cpp +++ b/test/github_issue_1174.cpp @@ -72,6 +72,14 @@ void test() const decimal128_t c {dist(rng) * 7, detail::etiny_v - 2}; BOOST_TEST_EQ(c, zero); + + const decimal128_t d {dist(rng) * 70, detail::etiny_v - 1}; + + BOOST_TEST_EQ(a, d); + + const decimal128_t e {dist(rng) * 700, detail::etiny_v - 2}; + + BOOST_TEST_EQ(a, e); } int main() From 9177a0294311818c9d08b1f1a15fd0c294288233 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 15:41:10 +0100 Subject: [PATCH 508/967] Simplify test set --- test/github_issue_1174.cpp | 54 +++++++------------------------------- 1 file changed, 9 insertions(+), 45 deletions(-) diff --git a/test/github_issue_1174.cpp b/test/github_issue_1174.cpp index 34d75e8d2..6f9041ff9 100644 --- a/test/github_issue_1174.cpp +++ b/test/github_issue_1174.cpp @@ -20,64 +20,28 @@ void test(); // These values are all from clamp.decTest // The tests for decimal32_t and decimal128_t are derived from the values used here -template <> -void test() -{ - constexpr decimal64_t zero {0}; - constexpr auto sub_min {std::numeric_limits::denorm_min()}; - const decimal64_t a {dist(rng) * 7, detail::etiny_v}; - - BOOST_TEST_GT(a, zero); - - const decimal64_t b {dist(rng) * 7, detail::etiny_v - 1}; - - BOOST_TEST_EQ(b, sub_min); // Should be rounded up - - const decimal64_t c {dist(rng) * 7, detail::etiny_v - 2}; - - BOOST_TEST_EQ(c, zero); // Should be flushed to 0 -} - -template <> -void test() -{ - constexpr decimal32_t zero {0}; - constexpr auto sub_min {std::numeric_limits::denorm_min()}; - const decimal32_t a {dist(rng) * 7, detail::etiny_v}; - - BOOST_TEST_GT(a, zero); - - const decimal32_t b {dist(rng) * 7, detail::etiny_v - 1}; - - BOOST_TEST_EQ(b, sub_min); - - const decimal32_t c {dist(rng) * 7, detail::etiny_v - 2}; - - BOOST_TEST_EQ(c, zero); -} - -template <> -void test() +template +void test() { - constexpr decimal128_t zero {0}; - constexpr auto sub_min {std::numeric_limits::denorm_min()}; - const decimal128_t a {dist(rng) * 7, detail::etiny_v}; + constexpr T zero {0}; + constexpr auto sub_min {std::numeric_limits::denorm_min()}; + const T a {dist(rng) * 7, detail::etiny_v}; BOOST_TEST_GT(a, zero); - const decimal128_t b {dist(rng) * 7, detail::etiny_v - 1}; + const T b {dist(rng) * 7, detail::etiny_v - 1}; BOOST_TEST_EQ(b, sub_min); - const decimal128_t c {dist(rng) * 7, detail::etiny_v - 2}; + const T c {dist(rng) * 7, detail::etiny_v - 2}; BOOST_TEST_EQ(c, zero); - const decimal128_t d {dist(rng) * 70, detail::etiny_v - 1}; + const T d {dist(rng) * 70, detail::etiny_v - 1}; BOOST_TEST_EQ(a, d); - const decimal128_t e {dist(rng) * 700, detail::etiny_v - 2}; + const T e {dist(rng) * 700, detail::etiny_v - 2}; BOOST_TEST_EQ(a, e); } From 49a904e00048e7cd7aa1056272d21c09d042aaac Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 15:41:35 +0100 Subject: [PATCH 509/967] Fix order of operations --- include/boost/decimal/decimal128_t.hpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 468076800..66866ed91 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -848,7 +848,7 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool is_negative) noexcep else if (coeff_digits + biased_exp <= detail::precision_v) { // Handle the case of sub-normals that don't need further rounding - bits_.high = is_negative ? detail::d128_sign_mask : UINT64_C(0); // Reset the sign bit + bits_ = {0u, 0u}; const auto zeros {detail::remove_trailing_zeros(reduced_coeff)}; biased_exp += static_cast(zeros.number_of_removed_zeros); reduced_coeff = zeros.trimmed_number; @@ -856,7 +856,8 @@ constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool is_negative) noexcep { reduced_coeff *= detail::pow10(static_cast(biased_exp)); } - bits_ |= reduced_coeff; + bits_ = reduced_coeff; + bits_.high |= is_negative ? detail::d128_sign_mask : UINT64_C(0); // Reset the sign bit } else if (digit_delta < 0 && coeff_digits - digit_delta <= detail::precision_v) { From 0f936434c3b7c8a69af02faed5cc49e19401619b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 15:45:01 +0100 Subject: [PATCH 510/967] Remove cruft --- test/github_issue_1174.cpp | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/test/github_issue_1174.cpp b/test/github_issue_1174.cpp index 6f9041ff9..113c197f8 100644 --- a/test/github_issue_1174.cpp +++ b/test/github_issue_1174.cpp @@ -15,9 +15,6 @@ static std::uniform_int_distribution dist(1, 1); using namespace boost::decimal; -template -void test(); - // These values are all from clamp.decTest // The tests for decimal32_t and decimal128_t are derived from the values used here template @@ -48,8 +45,8 @@ void test() int main() { - test(); test(); + test(); test(); return boost::report_errors(); From 4d80a7dbec79b529dcf161f1dd62eb2d84950300 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 31 Oct 2025 16:12:47 +0100 Subject: [PATCH 511/967] Suppress warnings from find_package(fmt) --- test/CMakeLists.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt index 5f1e8fbbd..eebf64ac1 100644 --- a/test/CMakeLists.txt +++ b/test/CMakeLists.txt @@ -13,7 +13,7 @@ if(HAVE_BOOST_TEST) else() - find_package(fmt) + find_package(fmt CONFIG) find_package(bson 2.0.2 CONFIG) if(fmt_FOUND AND bson_FOUND) message(STATUS "Boost.Decimal: Test with fmtlib and bson") From dd6d440996db3d4524cb86313adf4c422b30456d Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon, 3 Nov 2025 12:52:37 +0000 Subject: [PATCH 512/967] Bump sha.js in /doc in the npm_and_yarn group across 1 directory Bumps the npm_and_yarn group with 1 update in the /doc directory: [sha.js](https://github.com/crypto-browserify/sha.js). Updates `sha.js` from 2.4.11 to 2.4.12 - [Changelog](https://github.com/browserify/sha.js/blob/master/CHANGELOG.md) - [Commits](https://github.com/crypto-browserify/sha.js/compare/v2.4.11...v2.4.12) --- updated-dependencies: - dependency-name: sha.js dependency-version: 2.4.12 dependency-type: indirect dependency-group: npm_and_yarn ... 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a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -258,7 +258,7 @@ int main() [#examples_fmt_format] === `` -We also provide support for `{fmt}` so you can easily just swap the namespaces and headers on the above example: +We also provide support for pass:[{fmt}] so you can easily just swap the namespaces and headers on the above example: [source, c++] ---- diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index e6a85f714..3695f181d 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -110,7 +110,7 @@ int main() [#fmt_format] == `` -Support for `{fmt}` is also available. +Support for pass:[{fmt}] is also available. All the above information on modifiers is the same for fmtlib, just in a different namespace (i.e. `fmt::` instead of `std::`). The header `` is *NOT* part of the convenience header, because it is an optional dependency on a potentially compiled library. From 154423a12d3d5e16ad2ebd0dc904ff47a730ff53 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 12:57:30 +0100 Subject: [PATCH 514/967] Change concept to only ieee types for nan function --- include/boost/decimal/detail/cmath/nan.hpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 05629cc1d..020b70322 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -9,6 +9,7 @@ #include #include #include +#include #include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -39,7 +40,7 @@ BOOST_DECIMAL_EXPORT constexpr auto nand32(const char* arg) noexcept -> decimal3 BOOST_DECIMAL_EXPORT template constexpr auto nan(const char* arg) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) + BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, T) { return detail::nan_impl(arg); } From 609b262a782e6ce2e8e1ab9a4ffd05fa1c19555c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 13:31:48 +0100 Subject: [PATCH 515/967] Improve implementation and match std::nan --- include/boost/decimal/detail/cmath/nan.hpp | 25 ++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 020b70322..c43bee9d9 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -9,7 +9,7 @@ #include #include #include -#include +#include #include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -26,9 +26,26 @@ namespace detail { template constexpr auto nan_impl(const char* arg) noexcept -> TargetDecimalType { - char* endptr {}; - const auto val {strtod_impl(arg, &endptr)}; - return val & std::numeric_limits::quiet_NaN(); + using sig_type = typename TargetDecimalType::significand_type; + + constexpr std::uint32_t significand_field_bits {sizeof(TargetDecimalType) == sizeof(std::uint32_t) ? 23U : + sizeof(TargetDecimalType) == sizeof(std::uint64_t) ? 53U : 110U}; + + constexpr sig_type max_payload_value {(static_cast(1) << (significand_field_bits + 1U)) - 1U}; + constexpr TargetDecimalType zero {}; + constexpr TargetDecimalType zero_bits {zero ^ zero}; + + sig_type value {}; + const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), value, 10)}; + + if (!r || value > max_payload_value) + { + return std::numeric_limits::quiet_NaN(); + } + else + { + return (zero_bits | value) | std::numeric_limits::quiet_NaN(); + } } } //namespace detail From 41071321b76ac6d3aeebfd5b013eb222d7da2987 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 13:32:03 +0100 Subject: [PATCH 516/967] Improve testing of nan function --- test/test_cmath.cpp | 33 +++++++++++++++++++++++++++++---- 1 file changed, 29 insertions(+), 4 deletions(-) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index 787845724..c86485e85 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -39,7 +39,7 @@ #include #include #include - +#include #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) && !defined(_WIN32) static constexpr auto N = static_cast(128U); // Number of trials @@ -1237,13 +1237,38 @@ void test_exp2() } #if !defined(BOOST_DECIMAL_DISABLE_CLIB) + +#if defined(__GNUC__) && __GNUC__ >= 8 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wclass-memaccess" +#endif + template void test_nan() { - BOOST_TEST(!isnan(nan("1") & std::numeric_limits::quiet_NaN())); - BOOST_TEST(!isnan(nan("2") & std::numeric_limits::quiet_NaN())); - BOOST_TEST(!isnan(nan("-1") & std::numeric_limits::quiet_NaN())); + using sig_type = typename T::significand_type; + + const std::array sigs {1U, 2U, 3U}; + const std::array payloads {"1", "2", "3"}; + + for (std::size_t i {}; i < sigs.size(); ++i) + { + const auto payload {nan(payloads[i])}; + BOOST_TEST(isnan(payload)); + const auto removed_nan {payload ^ std::numeric_limits::quiet_NaN()}; + BOOST_TEST(!isnan(removed_nan)); + + // Check the payload + sig_type bits {}; + std::memcpy(&bits, &removed_nan, sizeof(sig_type)); + BOOST_TEST_EQ(bits, sigs[i]); + } } + +#if defined(__GNUC__) && __GNUC__ >= 8 +# pragma GCC diagnostic pop +#endif + #endif template From ec31f3584d0f30832c08b0bac018515d163e7520 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 13:46:57 +0100 Subject: [PATCH 517/967] Add additional testing of bad path --- test/test_cmath.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index c86485e85..40afc9f0b 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -1248,8 +1248,8 @@ void test_nan() { using sig_type = typename T::significand_type; - const std::array sigs {1U, 2U, 3U}; - const std::array payloads {"1", "2", "3"}; + const std::array sigs {1U, 2U, 3U, 0U}; + const std::array payloads {"1", "2", "3", "Junk"}; for (std::size_t i {}; i < sigs.size(); ++i) { From e269a97502a8ce9171f9546f30911c8dcd9dfc7f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 13:47:36 +0100 Subject: [PATCH 518/967] Allow for snan extension --- include/boost/decimal/detail/cmath/nan.hpp | 25 ++++++++++++---------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index c43bee9d9..3d884a8a6 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -23,11 +23,14 @@ namespace decimal { namespace detail { -template +template constexpr auto nan_impl(const char* arg) noexcept -> TargetDecimalType { using sig_type = typename TargetDecimalType::significand_type; + constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : + std::numeric_limits::quiet_NaN()}; + constexpr std::uint32_t significand_field_bits {sizeof(TargetDecimalType) == sizeof(std::uint32_t) ? 23U : sizeof(TargetDecimalType) == sizeof(std::uint64_t) ? 53U : 110U}; @@ -40,36 +43,36 @@ constexpr auto nan_impl(const char* arg) noexcept -> TargetDecimalType if (!r || value > max_payload_value) { - return std::numeric_limits::quiet_NaN(); + return nan_type; } else { - return (zero_bits | value) | std::numeric_limits::quiet_NaN(); + return (zero_bits | value) | nan_type; } } } //namespace detail -BOOST_DECIMAL_EXPORT constexpr auto nand32(const char* arg) noexcept -> decimal32_t -{ - return detail::nan_impl(arg); -} - BOOST_DECIMAL_EXPORT template constexpr auto nan(const char* arg) noexcept BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, T) { - return detail::nan_impl(arg); + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto nand32(const char* arg) noexcept -> decimal32_t +{ + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT constexpr auto nand64(const char* arg) noexcept -> decimal64_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT constexpr auto nand128(const char* arg) noexcept -> decimal128_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } } //namespace decimal From 42d6e9ce8bac0a6bd18bbd85593b06b2b015293a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 13:48:59 +0100 Subject: [PATCH 519/967] Add snan generating functions --- include/boost/decimal/detail/cmath/nan.hpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 3d884a8a6..77ff0c21b 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -75,6 +75,28 @@ BOOST_DECIMAL_EXPORT constexpr auto nand128(const char* arg) noexcept -> decimal return detail::nan_impl(arg); } +BOOST_DECIMAL_EXPORT template +constexpr auto snan(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, T) +{ + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto snand32(const char* arg) noexcept -> decimal32_t +{ + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto snand64(const char* arg) noexcept -> decimal64_t +{ + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto snand128(const char* arg) noexcept -> decimal128_t +{ + return detail::nan_impl(arg); +} + } //namespace decimal } //namespace boost From 964a56233573fdd39e3fa5a4b05bc91485a1adb1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 13:49:07 +0100 Subject: [PATCH 520/967] Add testing of snan generation --- test/test_cmath.cpp | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index 40afc9f0b..13bef5c3f 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -1263,6 +1263,20 @@ void test_nan() std::memcpy(&bits, &removed_nan, sizeof(sig_type)); BOOST_TEST_EQ(bits, sigs[i]); } + + for (std::size_t i {}; i < sigs.size(); ++i) + { + const auto payload {snan(payloads[i])}; + BOOST_TEST(isnan(payload)); + BOOST_TEST(issignaling(payload)); + const auto removed_nan {payload ^ std::numeric_limits::signaling_NaN()}; + BOOST_TEST(!isnan(removed_nan)); + + // Check the payload + sig_type bits {}; + std::memcpy(&bits, &removed_nan, sizeof(sig_type)); + BOOST_TEST_EQ(bits, sigs[i]); + } } #if defined(__GNUC__) && __GNUC__ >= 8 From 53cf5826d01ce52ae34b6e9cf2c08cefe7d85646 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 13:57:25 +0100 Subject: [PATCH 521/967] Ignore new conversion error from FMT 12 --- include/boost/decimal/fmt_format.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/fmt_format.hpp b/include/boost/decimal/fmt_format.hpp index b6bd16971..dfb3ea9e3 100644 --- a/include/boost/decimal/fmt_format.hpp +++ b/include/boost/decimal/fmt_format.hpp @@ -12,6 +12,7 @@ #ifdef __GNUC__ # pragma GCC diagnostic push # pragma GCC diagnostic ignored "-Wfloat-equal" +# pragma GCC diagnostic ignored "-Wconversion" #endif #include From 78d3a9ae548a34841a0563aeb40256c68ec7cbdd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 14:06:47 +0100 Subject: [PATCH 522/967] Add snan function to docs --- doc/modules/ROOT/pages/cmath.adoc | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 77ddd0e2b..1ceab0a28 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -27,7 +27,8 @@ All of these functions are impacted by the global rounding mode as described in | https://en.cppreference.com/w/cpp/numeric/math/fmax[fmax] | Returns maximum value | https://en.cppreference.com/w/cpp/numeric/math/fmin[fmin] | Returns minimum value | https://en.cppreference.com/w/cpp/numeric/math/fdim[fdim] | Returns unsigned difference of two values -| https://en.cppreference.com/w/cpp/numeric/math/nan[nan] | Generates NANs +| https://en.cppreference.com/w/cpp/numeric/math/nan[nan] | Generates Quiet NANs with Payload +| https://en.cppreference.com/w/cpp/numeric/math/nan[snan] | Generates Signaling NANs with Payload (Non-Standard) |=== [source, c++] @@ -71,6 +72,10 @@ constexpr decimal32_t nand32(const char* arg) noexcept; constexpr decimal64_t nand64(const char* arg) noexcept; constexpr decimal128_t nand128(const char* arg) noexcept; +constexpr decimal32_t snand32(const char* arg) noexcept; +constexpr decimal64_t snand64(const char* arg) noexcept; +constexpr decimal128_t snand128(const char* arg) noexcept; + } // namespace decimal } // namespace boost ---- From d8bbd34563600644ec6e956e1419c30849cb427d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 14:22:35 +0100 Subject: [PATCH 523/967] Add function to read payload --- include/boost/decimal/decimal128_t.hpp | 4 ++++ include/boost/decimal/decimal32_t.hpp | 4 ++++ include/boost/decimal/decimal64_t.hpp | 4 ++++ include/boost/decimal/detail/cmath/nan.hpp | 18 ++++++++++++++++++ 4 files changed, 30 insertions(+) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 66866ed91..81aa6e4b2 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -215,6 +215,10 @@ BOOST_DECIMAL_EXPORT class decimal128_t final constexpr decimal128_t(const char* str, std::size_t len); #endif + template + friend constexpr auto read_payload(T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, typename T::significand_type); + public: // 3.2.4.1 construct/copy/destroy constexpr decimal128_t() noexcept = default; diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index aa8cce3d3..9455b0e81 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -225,6 +225,10 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special constexpr decimal32_t(const char* str, std::size_t len); #endif + template + friend constexpr auto read_payload(T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, typename T::significand_type); + public: // 3.2.2.1 construct/copy/destroy: constexpr decimal32_t() noexcept = default; diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 55acc7df3..d287234e5 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -233,6 +233,10 @@ BOOST_DECIMAL_EXPORT class decimal64_t final constexpr decimal64_t(const char* str, std::size_t len); #endif + template + friend constexpr auto read_payload(T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, typename T::significand_type); + public: // 3.2.3.1 construct/copy/destroy constexpr decimal64_t() noexcept = default; diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 77ff0c21b..620f20c41 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -97,6 +97,24 @@ BOOST_DECIMAL_EXPORT constexpr auto snand128(const char* arg) noexcept -> decima return detail::nan_impl(arg); } +template +constexpr auto read_payload(const T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, typename T::significand_type) +{ + if (!isnan(value)) + { + return 0U; + } + else if (issignaling(value)) + { + return (value ^ std::numeric_limits::signaling_NaN()).bits_; + } + else + { + return (value ^ std::numeric_limits::quiet_NaN()).bits_; + } +} + } //namespace decimal } //namespace boost From 0a69178ba65b6b564a94128afe61fdefcff7c6ba Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 14:22:48 +0100 Subject: [PATCH 524/967] Add testing of payload read function --- test/test_cmath.cpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index 13bef5c3f..c15fe3029 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -1262,6 +1262,9 @@ void test_nan() sig_type bits {}; std::memcpy(&bits, &removed_nan, sizeof(sig_type)); BOOST_TEST_EQ(bits, sigs[i]); + + const auto payload_func_bits {read_payload(payload)}; + BOOST_TEST_EQ(payload_func_bits, bits); } for (std::size_t i {}; i < sigs.size(); ++i) @@ -1276,6 +1279,9 @@ void test_nan() sig_type bits {}; std::memcpy(&bits, &removed_nan, sizeof(sig_type)); BOOST_TEST_EQ(bits, sigs[i]); + + const auto payload_func_bits {read_payload(payload)}; + BOOST_TEST_EQ(payload_func_bits, bits); } } From bb91dbdcb09fcc4205dd7a62c38f7f8f1d8d7de6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 14:30:30 +0100 Subject: [PATCH 525/967] Add read_payload to documentation index --- doc/modules/ROOT/pages/cmath.adoc | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 1ceab0a28..5b237e6ed 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -15,7 +15,7 @@ Additionally, all functions are marked `noexcept`. All of these functions are impacted by the global rounding mode as described in xref:cfenv.adoc[rounding modes] as well as the `DEC_FLT_EVAL_METHOD` from xref:cfloat.adoc[evaluation methods]. == Basic Operations - +[#basic_cmath_ops] |=== | Function | Description | https://en.cppreference.com/w/cpp/numeric/math/fabs[abs] | Absolute Value @@ -536,6 +536,19 @@ constexpr bool issignaling(Decimal x) noexcept; Effects: If x is an sNaN returns true, otherwise returns false. +=== `read_payload` + +[source, c++] +---- +template +constexpr auto read_payload(Decimal x) noexcept + -> std::enable_if_t, typename T::significand_type>; +---- + +Effects: if x is either a qNaN or an sNaN, returns the payload of the NaN, otherwise returns 0. + +This function allows the payloads of nans that are set by the functions xref:basic_cmath_ops[`nan`] or xref:basic_cmath_ops[`snan`] to be returned. + === samequantum [source, c++] From 67c5356d8afa4cf92cb8330a821aad1cdcadc1f5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 14:31:01 +0100 Subject: [PATCH 526/967] Fix function formatting --- doc/modules/ROOT/pages/cmath.adoc | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 5b237e6ed..d9946ce41 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -526,7 +526,7 @@ constexpr DecimalType riemann_zeta(IntegralType n) noexcept; The following are convenience functions, or are prescribed in IEEE 754-2019 as required for decimal floating point types. -=== issignaling +=== `issignaling` [source, c++] ---- @@ -549,7 +549,7 @@ Effects: if x is either a qNaN or an sNaN, returns the payload of the NaN, other This function allows the payloads of nans that are set by the functions xref:basic_cmath_ops[`nan`] or xref:basic_cmath_ops[`snan`] to be returned. -=== samequantum +=== `samequantum` [source, c++] ---- @@ -575,7 +575,7 @@ If both x and y are NaN, or infinity, they have the same quantum exponents. If exactly one operand is infinity or exactly one operand is NaN, they do not have the same quantum exponents. -=== quantexp +=== `quantexp` [source, c++] ---- @@ -599,7 +599,7 @@ Effects: if x is finite, returns its quantum exponent. Otherwise, `INT_MIN` is returned. -=== quantized +=== `quantized` [source, c++] ---- @@ -635,7 +635,7 @@ If both operands are infinity, the result is infinity, with the same sign as x. The quantize functions do not signal underflow. -=== frexp10 +=== `frexp10` [source, c++] ---- From 987b0219f401ff2b3172bd54b3a7d7926f9b0678 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 15:11:15 +0100 Subject: [PATCH 527/967] Add export --- include/boost/decimal/detail/cmath/nan.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 620f20c41..b7a9b7da9 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -97,7 +97,7 @@ BOOST_DECIMAL_EXPORT constexpr auto snand128(const char* arg) noexcept -> decima return detail::nan_impl(arg); } -template +BOOST_DECIMAL_EXPORT template constexpr auto read_payload(const T value) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, typename T::significand_type) { From fb51370b0a5799f210bbcf41c35631abe30bfcb3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 17:15:52 +0100 Subject: [PATCH 528/967] Fix MSVC variable shadowing warning --- include/boost/decimal/detail/cmath/nan.hpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index b7a9b7da9..8544ea45e 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -38,16 +38,16 @@ constexpr auto nan_impl(const char* arg) noexcept -> TargetDecimalType constexpr TargetDecimalType zero {}; constexpr TargetDecimalType zero_bits {zero ^ zero}; - sig_type value {}; - const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), value, 10)}; + sig_type payload_value {}; + const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), payload_value, 10)}; - if (!r || value > max_payload_value) + if (!r || payload_value > max_payload_value) { return nan_type; } else { - return (zero_bits | value) | nan_type; + return (zero_bits | payload_value) | nan_type; } } From fa0b3a27af530e40149ed1dac768978421f2072a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:12:37 +0100 Subject: [PATCH 529/967] Only use high bits of significand to store non-finite value --- include/boost/decimal/decimal_fast32_t.hpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index d6461379c..3f754e0d9 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -52,9 +52,9 @@ namespace decimal { namespace detail { -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_inf = std::numeric_limits::max() - 3; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_qnan = std::numeric_limits::max() - 2; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_snan = std::numeric_limits::max() - 1; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_inf {UINT32_C(0b1) << 29U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_qnan {UINT32_C(0b11) << 29U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d32_fast_snan {UINT32_C(0b111) << 29U}; template constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; From 198b690192487ffe61c2460b9f55ed734d183c4c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:32:41 +0100 Subject: [PATCH 530/967] Update fast 64 and 128 non-finite values --- include/boost/decimal/decimal_fast128_t.hpp | 12 ++++++------ include/boost/decimal/decimal_fast64_t.hpp | 6 +++--- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 4cd06a2f7..e9a6633c4 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -53,13 +53,13 @@ namespace decimal { namespace detail { -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_inf = boost::int128::uint128_t {UINT64_MAX - 2, UINT64_MAX}; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_qnan = boost::int128::uint128_t {UINT64_MAX - 1, UINT64_MAX}; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan = boost::int128::uint128_t {UINT64_MAX, UINT64_MAX}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_inf_high_bits {UINT64_C(0b1) << 61U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_qnan_high_bits {UINT64_C(0b11) << 61U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits {UINT64_C(0b111) << 61U}; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_inf_high_bits = UINT64_MAX - 2; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_qnan_high_bits = UINT64_MAX - 1; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan_high_bits = UINT64_MAX; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_inf = boost::int128::uint128_t {d128_fast_inf_high_bits, 0U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_qnan = boost::int128::uint128_t {d128_fast_qnan_high_bits, 0U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d128_fast_snan = boost::int128::uint128_t {d128_fast_snan_high_bits, 0U}; template constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 2e1edc669..a5ab48b53 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -54,9 +54,9 @@ namespace decimal { namespace detail { -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_inf = std::numeric_limits::max() - 3; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_qnan = std::numeric_limits::max() - 2; -BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_snan = std::numeric_limits::max() - 1; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_inf {UINT64_C(0b1) << 61U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_qnan {UINT64_C(0b11) << 61U}; +BOOST_DECIMAL_INLINE_CONSTEXPR_VARIABLE auto d64_fast_snan {UINT64_C(0b111) << 61U}; template constexpr auto to_chars_scientific_impl(char* first, char* last, const TargetDecimalType& value, chars_format fmt) noexcept -> to_chars_result; From aeb78f64fecca7a6d6f5014da18535750912c523 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:46:41 +0100 Subject: [PATCH 531/967] Implement nan for fast types --- include/boost/decimal/detail/cmath/nan.hpp | 35 ++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 8544ea45e..0fa192fb5 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -10,6 +10,7 @@ #include #include #include +#include #include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -23,8 +24,38 @@ namespace decimal { namespace detail { -template -constexpr auto nan_impl(const char* arg) noexcept -> TargetDecimalType +template +constexpr auto nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType) +{ + using sig_type = typename TargetDecimalType::significand_type; + + constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : + std::numeric_limits::quiet_NaN()}; + + constexpr std::uint32_t significand_field_bits {decimal_val_v < 64 ? 23U : + decimal_val_v < 128 ? 53U : 110U}; + + constexpr sig_type max_payload_value {(static_cast(1) << (significand_field_bits + 1U)) - 1U}; + + sig_type payload_value {}; + const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), payload_value, 10)}; + + TargetDecimalType return_value {nan_type}; + if (!r || payload_value > max_payload_value) + { + return return_value; + } + else + { + return_value.significand_ |= payload_value; + return return_value; + } +} + +template +constexpr auto nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, TargetDecimalType) { using sig_type = typename TargetDecimalType::significand_type; From 402f6b1100c8c1e2e13469ee43bd14feef05f4e7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:46:49 +0100 Subject: [PATCH 532/967] Make nan_impl a friend --- include/boost/decimal/decimal_fast128_t.hpp | 8 ++++++++ include/boost/decimal/decimal_fast32_t.hpp | 8 ++++++++ include/boost/decimal/decimal_fast64_t.hpp | 8 ++++++++ 3 files changed, 24 insertions(+) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index e9a6633c4..197f477a6 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -73,6 +73,10 @@ constexpr auto to_chars_hex_impl(char* first, char* last, const TargetDecimalTyp template constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; +template +constexpr auto nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + } // namespace detail #ifdef _MSC_VER @@ -191,6 +195,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final template friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; + template + friend constexpr auto detail::nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast128_t(const char* str, std::size_t len); #endif diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 3f754e0d9..2b887c39e 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -71,6 +71,10 @@ constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, co template constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; +template +constexpr auto nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + } // namespace detail BOOST_DECIMAL_EXPORT class decimal_fast32_t final @@ -191,6 +195,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final template friend constexpr auto detail::generic_div_impl(const T& lhs, const T& rhs) noexcept -> DecimalType; + template + friend constexpr auto detail::nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast32_t(const char* str, std::size_t len); #endif diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index a5ab48b53..66ad00ab9 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -73,6 +73,10 @@ constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, co template constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; +template +constexpr auto nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + } // namespace detail BOOST_DECIMAL_EXPORT class decimal_fast64_t final @@ -198,6 +202,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final template friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; + template + friend constexpr auto detail::nan_impl(const char* arg) noexcept + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast64_t(const char* str, std::size_t len); #endif From 14d10207d4fd58d3f6975c21f15a767a01692746 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:46:55 +0100 Subject: [PATCH 533/967] Add fast type testing --- test/test_cmath.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index c15fe3029..fd86a346a 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -1591,6 +1591,10 @@ int main() test_nan(); test_nan(); test_nan(); + + test_nan(); + test_nan(); + test_nan(); #endif test_log2(); From 17528cf714fb508d853d8f97d5772534effdb8c9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:47:27 +0100 Subject: [PATCH 534/967] Change concept requirements --- include/boost/decimal/detail/cmath/nan.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 0fa192fb5..25b247fb9 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -86,7 +86,7 @@ constexpr auto nan_impl(const char* arg) noexcept BOOST_DECIMAL_EXPORT template constexpr auto nan(const char* arg) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, T) + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { return detail::nan_impl(arg); } @@ -108,7 +108,7 @@ BOOST_DECIMAL_EXPORT constexpr auto nand128(const char* arg) noexcept -> decimal BOOST_DECIMAL_EXPORT template constexpr auto snan(const char* arg) noexcept - BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, T) + BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) { return detail::nan_impl(arg); } From 6b76b53be940b4f6fdf6afc9db9b61588f8a6124 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:48:28 +0100 Subject: [PATCH 535/967] Add overloads for fast types --- include/boost/decimal/detail/cmath/nan.hpp | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 25b247fb9..c78de8758 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -106,6 +106,21 @@ BOOST_DECIMAL_EXPORT constexpr auto nand128(const char* arg) noexcept -> decimal return detail::nan_impl(arg); } +BOOST_DECIMAL_EXPORT constexpr auto nand32f(const char* arg) noexcept -> decimal_fast32_t +{ + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto nand64f(const char* arg) noexcept -> decimal_fast64_t +{ + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto nand128f(const char* arg) noexcept -> decimal_fast128_t +{ + return detail::nan_impl(arg); +} + BOOST_DECIMAL_EXPORT template constexpr auto snan(const char* arg) noexcept BOOST_DECIMAL_REQUIRES(detail::is_decimal_floating_point_v, T) @@ -128,6 +143,21 @@ BOOST_DECIMAL_EXPORT constexpr auto snand128(const char* arg) noexcept -> decima return detail::nan_impl(arg); } +BOOST_DECIMAL_EXPORT constexpr auto snand32f(const char* arg) noexcept -> decimal_fast32_t +{ + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto snand64f(const char* arg) noexcept -> decimal_fast64_t +{ + return detail::nan_impl(arg); +} + +BOOST_DECIMAL_EXPORT constexpr auto snand128f(const char* arg) noexcept -> decimal_fast128_t +{ + return detail::nan_impl(arg); +} + BOOST_DECIMAL_EXPORT template constexpr auto read_payload(const T value) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, typename T::significand_type) From 0d5b5d968722d3ea5ecc0cf7bdf8badfe5a12c20 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 10:49:32 +0100 Subject: [PATCH 536/967] Add fast type nan overloads to the docs --- doc/modules/ROOT/pages/cmath.adoc | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index d9946ce41..3d66a2400 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -72,10 +72,18 @@ constexpr decimal32_t nand32(const char* arg) noexcept; constexpr decimal64_t nand64(const char* arg) noexcept; constexpr decimal128_t nand128(const char* arg) noexcept; +constexpr decimal_fast32_t nand32f(const char* arg) noexcept; +constexpr decimal_fast64_t nand64f(const char* arg) noexcept; +constexpr decimal_fast128_t nand128f(const char* arg) noexcept; + constexpr decimal32_t snand32(const char* arg) noexcept; constexpr decimal64_t snand64(const char* arg) noexcept; constexpr decimal128_t snand128(const char* arg) noexcept; +constexpr decimal_fast32_t snand32f(const char* arg) noexcept; +constexpr decimal_fast64_t snand64f(const char* arg) noexcept; +constexpr decimal_fast128_t snand128f(const char* arg) noexcept; + } // namespace decimal } // namespace boost ---- From 4c0a8ec36a47dbaf91631fd33961c37bd08cd591 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 11:00:57 +0100 Subject: [PATCH 537/967] Implement reading of payload for fast types --- include/boost/decimal/decimal_fast128_t.hpp | 4 ++ include/boost/decimal/decimal_fast32_t.hpp | 4 ++ include/boost/decimal/decimal_fast64_t.hpp | 4 ++ include/boost/decimal/detail/cmath/nan.hpp | 64 +++++++++++++++++++++ 4 files changed, 76 insertions(+) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 197f477a6..685fb1838 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -199,6 +199,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto detail::nan_impl(const char* arg) noexcept BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + template + friend constexpr auto read_payload(T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_fast_type_v, T, typename T::significand_type); + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast128_t(const char* str, std::size_t len); #endif diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 2b887c39e..3178652d6 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -199,6 +199,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final friend constexpr auto detail::nan_impl(const char* arg) noexcept BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + template + friend constexpr auto read_payload(T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_fast_type_v, T, typename T::significand_type); + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast32_t(const char* str, std::size_t len); #endif diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 66ad00ab9..61685a920 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -206,6 +206,10 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto detail::nan_impl(const char* arg) noexcept BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); + template + friend constexpr auto read_payload(T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_fast_type_v, T, typename T::significand_type); + #if !defined(BOOST_DECIMAL_DISABLE_CLIB) constexpr decimal_fast64_t(const char* str, std::size_t len); #endif diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index c78de8758..5cd14476b 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -176,6 +176,70 @@ constexpr auto read_payload(const T value) noexcept } } +namespace detail { + +template +constexpr auto get_qnan_mask(); + +template <> +constexpr auto get_qnan_mask() +{ + return d32_fast_qnan; +} + +template <> +constexpr auto get_qnan_mask() +{ + return d64_fast_qnan; +} + +template <> +constexpr auto get_qnan_mask() +{ + return d128_fast_qnan; +} + +template +constexpr auto get_snan_mask(); + +template <> +constexpr auto get_snan_mask() +{ + return d32_fast_snan; +} + +template <> +constexpr auto get_snan_mask() +{ + return d64_fast_snan; +} + +template <> +constexpr auto get_snan_mask() +{ + return d128_fast_snan; +} + +} // namespace detail + +BOOST_DECIMAL_EXPORT template +constexpr auto read_payload(const T value) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_fast_type_v, T, typename T::significand_type) +{ + if (!isnan(value)) + { + return 0U; + } + else if (issignaling(value)) + { + return value.significand_ ^ detail::get_snan_mask(); + } + else + { + return value.significand_ ^ detail::get_qnan_mask(); + } +} + } //namespace decimal } //namespace boost From 0ae5057b00336d6842ad32dabc9cef233e69aadd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 11:05:06 +0100 Subject: [PATCH 538/967] Add separate testing impl for fast types --- test/test_cmath.cpp | 38 +++++++++++++++++++++++++++++++++++--- 1 file changed, 35 insertions(+), 3 deletions(-) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index fd86a346a..dc9a86bda 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -1244,17 +1244,19 @@ void test_exp2() #endif template -void test_nan() +auto test_nan() + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, void) { using sig_type = typename T::significand_type; - const std::array sigs {1U, 2U, 3U, 0U}; - const std::array payloads {"1", "2", "3", "Junk"}; + const std::array sigs {1U, 2U, 3U, 0U, 0U}; + constexpr std::array payloads {"1", "2", "3", "Junk", "999999999999999999999999999999999999999999999999999999999999"}; for (std::size_t i {}; i < sigs.size(); ++i) { const auto payload {nan(payloads[i])}; BOOST_TEST(isnan(payload)); + BOOST_TEST(!issignaling(payload)); const auto removed_nan {payload ^ std::numeric_limits::quiet_NaN()}; BOOST_TEST(!isnan(removed_nan)); @@ -1285,6 +1287,36 @@ void test_nan() } } +template +auto test_nan() + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_fast_type_v, T, void) +{ + using sig_type = typename T::significand_type; + + const std::array sigs {1U, 2U, 3U, 0U, 0U}; + constexpr std::array payloads {"1", "2", "3", "Junk", "999999999999999999999999999999999999999999999999999999999999"}; + + for (std::size_t i {}; i < sigs.size(); ++i) + { + const auto payload {nan(payloads[i])}; + BOOST_TEST(isnan(payload)); + BOOST_TEST(!issignaling(payload)); + + const auto recovered_payload {read_payload(payload)}; + BOOST_TEST_EQ(recovered_payload, sigs[i]); + } + + for (std::size_t i {}; i < sigs.size(); ++i) + { + const auto payload {snan(payloads[i])}; + BOOST_TEST(isnan(payload)); + BOOST_TEST(issignaling(payload)); + + const auto recovered_payload {read_payload(payload)}; + BOOST_TEST_EQ(recovered_payload, sigs[i]); + } +} + #if defined(__GNUC__) && __GNUC__ >= 8 # pragma GCC diagnostic pop #endif From a73b5b8c43764b0f4273d02b764889c50e30842b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 11:18:16 +0100 Subject: [PATCH 539/967] Fix template params --- include/boost/decimal/detail/cmath/nan.hpp | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 5cd14476b..1c73212f8 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -108,17 +108,17 @@ BOOST_DECIMAL_EXPORT constexpr auto nand128(const char* arg) noexcept -> decimal BOOST_DECIMAL_EXPORT constexpr auto nand32f(const char* arg) noexcept -> decimal_fast32_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT constexpr auto nand64f(const char* arg) noexcept -> decimal_fast64_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT constexpr auto nand128f(const char* arg) noexcept -> decimal_fast128_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT template @@ -145,17 +145,17 @@ BOOST_DECIMAL_EXPORT constexpr auto snand128(const char* arg) noexcept -> decima BOOST_DECIMAL_EXPORT constexpr auto snand32f(const char* arg) noexcept -> decimal_fast32_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT constexpr auto snand64f(const char* arg) noexcept -> decimal_fast64_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT constexpr auto snand128f(const char* arg) noexcept -> decimal_fast128_t { - return detail::nan_impl(arg); + return detail::nan_impl(arg); } BOOST_DECIMAL_EXPORT template From 1d1722944f21049fbd0621bafaa86fc128557093 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 11:22:40 +0100 Subject: [PATCH 540/967] Fix detection of signaling nans with payload --- include/boost/decimal/decimal_fast128_t.hpp | 2 +- include/boost/decimal/decimal_fast32_t.hpp | 2 +- include/boost/decimal/decimal_fast64_t.hpp | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 685fb1838..ecd94ea54 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -657,7 +657,7 @@ constexpr auto isnan(const decimal_fast128_t& val) noexcept -> bool constexpr auto issignaling(const decimal_fast128_t& val) noexcept -> bool { #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_.high == detail::d128_fast_snan_high_bits; + return val.significand_.high >= detail::d128_fast_snan_high_bits; #else static_cast(val); return false; diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 3178652d6..11de1002d 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -643,7 +643,7 @@ constexpr auto isnan(const decimal_fast32_t val) noexcept -> bool constexpr auto issignaling(const decimal_fast32_t val) noexcept -> bool { #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ == detail::d32_fast_snan; + return val.significand_ >= detail::d32_fast_snan; #else static_cast(val); return false; diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 61685a920..91011a673 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -650,7 +650,7 @@ constexpr auto isnan(const decimal_fast64_t val) noexcept -> bool constexpr auto issignaling(const decimal_fast64_t val) noexcept -> bool { #ifndef BOOST_DECIMAL_FAST_MATH - return val.significand_ == detail::d64_fast_snan; + return val.significand_ >= detail::d64_fast_snan; #else static_cast(val); return false; From 6b41dab01d1356c3dce833a6c7ca2fa0706d6dba Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 11:24:35 +0100 Subject: [PATCH 541/967] Correct calculation of max payload value --- include/boost/decimal/detail/cmath/nan.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 1c73212f8..7eed1fbe8 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -36,7 +36,7 @@ constexpr auto nan_impl(const char* arg) noexcept constexpr std::uint32_t significand_field_bits {decimal_val_v < 64 ? 23U : decimal_val_v < 128 ? 53U : 110U}; - constexpr sig_type max_payload_value {(static_cast(1) << (significand_field_bits + 1U)) - 1U}; + constexpr sig_type max_payload_value {(static_cast(1) << significand_field_bits) - 1U}; sig_type payload_value {}; const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), payload_value, 10)}; @@ -65,7 +65,7 @@ constexpr auto nan_impl(const char* arg) noexcept constexpr std::uint32_t significand_field_bits {sizeof(TargetDecimalType) == sizeof(std::uint32_t) ? 23U : sizeof(TargetDecimalType) == sizeof(std::uint64_t) ? 53U : 110U}; - constexpr sig_type max_payload_value {(static_cast(1) << (significand_field_bits + 1U)) - 1U}; + constexpr sig_type max_payload_value {(static_cast(1) << significand_field_bits) - 1U}; constexpr TargetDecimalType zero {}; constexpr TargetDecimalType zero_bits {zero ^ zero}; From 6094c8dba017d3e7263ec937386badc8de7041ee Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 11:33:43 +0100 Subject: [PATCH 542/967] Remove read_payload conceptual requirement --- doc/modules/ROOT/pages/cmath.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 3d66a2400..4df937e19 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -550,7 +550,7 @@ Effects: If x is an sNaN returns true, otherwise returns false. ---- template constexpr auto read_payload(Decimal x) noexcept - -> std::enable_if_t, typename T::significand_type>; + -> typename T::significand_type; ---- Effects: if x is either a qNaN or an sNaN, returns the payload of the NaN, otherwise returns 0. From fc553b86448dcbfef1415cc20f7f0404f4a57953 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 12:43:08 +0100 Subject: [PATCH 543/967] Add outline --- include/boost/decimal/cmath.hpp | 1 + .../decimal/detail/cmath/total_order.hpp | 69 +++++++++++++++++++ 2 files changed, 70 insertions(+) create mode 100644 include/boost/decimal/detail/cmath/total_order.hpp diff --git a/include/boost/decimal/cmath.hpp b/include/boost/decimal/cmath.hpp index cd96e87c7..0b5f444b9 100644 --- a/include/boost/decimal/cmath.hpp +++ b/include/boost/decimal/cmath.hpp @@ -78,6 +78,7 @@ #include #include #include +#include #include // Macros from 3.6.2 diff --git a/include/boost/decimal/detail/cmath/total_order.hpp b/include/boost/decimal/detail/cmath/total_order.hpp new file mode 100644 index 000000000..5305d724b --- /dev/null +++ b/include/boost/decimal/detail/cmath/total_order.hpp @@ -0,0 +1,69 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_DETAIL_CMATH_TOTAL_ORDER_HPP +#define BOOST_DECIMAL_DETAIL_CMATH_TOTAL_ORDER_HPP + +#include +#include +#include + +namespace boost { +namespace decimal { + +namespace detail { + +template +constexpr auto total_ordering_impl(const T x, const T y) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, bool) +{ + // Part d: Check for unordered values + const auto x_nan {isnan(x)}; + const auto x_neg {signbit(x)}; + const auto y_nan {isnan(y)}; + const auto y_neg {signbit(y)}; + + if (x_nan && x_neg && !y_nan) + { + // d.1 + return true; + } + if (!x_nan && y_nan && !y_neg) + { + // d.2 + return true; + } + if (x_nan && y_nan) + { + // d.3.i + if (x_neg && !y_neg) + { + return true; + } + // d.3.ii + const auto x_signaling {issignaling(x)}; + const auto y_signaling {issignaling(y)}; + if (x_signaling && !y_signaling) + { + return !y_neg; + } + // d.3.iii + + } +} + +} // namespace detail + +template +constexpr auto total_order(const T1 lhs, const T2 rhs) noexcept + BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, T1, detail::is_decimal_floating_point_v, T2, bool) +{ + using larger_type = std::conditional_t >= detail::decimal_val_v, T1, T2>; + return detail::total_ordering_impl(static_cast(lhs), static_cast(rhs)); +} + +} // namespace decimal +} // namespace boost + +#endif // BOOST_DECIMAL_DETAIL_CMATH_TOTAL_ORDER_HPP From 1e0402744d42ceada8f5b14676c58a63596c7207 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 15:25:40 +0100 Subject: [PATCH 544/967] Export main template --- include/boost/decimal/detail/cmath/total_order.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/cmath/total_order.hpp b/include/boost/decimal/detail/cmath/total_order.hpp index 5305d724b..40c88dfeb 100644 --- a/include/boost/decimal/detail/cmath/total_order.hpp +++ b/include/boost/decimal/detail/cmath/total_order.hpp @@ -55,7 +55,7 @@ constexpr auto total_ordering_impl(const T x, const T y) noexcept } // namespace detail -template +BOOST_DECIMAL_EXPORT template constexpr auto total_order(const T1 lhs, const T2 rhs) noexcept BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, T1, detail::is_decimal_floating_point_v, T2, bool) { From c732aa7cd225d65dbc3a35fe631a0a137e1cfc4a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 16:31:56 +0100 Subject: [PATCH 545/967] Add missing function --- include/boost/decimal/cmath.hpp | 5 +++++ include/boost/decimal/decimal_fast64_t.hpp | 15 +++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/include/boost/decimal/cmath.hpp b/include/boost/decimal/cmath.hpp index 0b5f444b9..33d599f8c 100644 --- a/include/boost/decimal/cmath.hpp +++ b/include/boost/decimal/cmath.hpp @@ -225,6 +225,11 @@ BOOST_DECIMAL_EXPORT constexpr auto quantexp(decimal64_t x) noexcept -> int return quantexpd64(x); } +BOOST_DECIMAL_EXPORT constexpr auto quantexp(decimal_fast64_t x) noexcept -> int +{ + return quantexpd64f(x); +} + BOOST_DECIMAL_EXPORT constexpr auto quantexp(decimal128_t x) noexcept -> int { return quantexpd128(x); diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 91011a673..a7ba82332 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -476,6 +476,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto copysignd64f(decimal_fast64_t mag, decimal_fast64_t sgn) noexcept -> decimal_fast64_t; friend constexpr auto scalbnd64f(decimal_fast64_t num, int exp) noexcept -> decimal_fast64_t; friend constexpr auto scalblnd64f(decimal_fast64_t num, long exp) noexcept -> decimal_fast64_t; + friend constexpr auto quantexpd64f(decimal_fast64_t x) noexcept -> int; }; #ifdef BOOST_DECIMAL_HAS_CONCEPTS @@ -1471,6 +1472,20 @@ constexpr auto decimal_fast64_t::operator--(int) noexcept -> decimal_fast64_t& return --(*this); } +// Effects: if x is finite, returns its quantum exponent. +// Otherwise, a domain error occurs and INT_MIN is returned. +constexpr auto quantexpd64f(const decimal_fast64_t x) noexcept -> int +{ + #ifndef BOOST_DECIMAL_FAST_MATH + if (!isfinite(x)) + { + return INT_MIN; + } + #endif + + return static_cast(x.unbiased_exponent()); +} + constexpr auto scalblnd64f(decimal_fast64_t num, const long exp) noexcept -> decimal_fast64_t { #ifndef BOOST_DECIMAL_FAST_MATH From c3fdc53aadd4e20de7e48a485f87fca510d6c7e4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 16:32:13 +0100 Subject: [PATCH 546/967] Complete first draft of total ordering --- .../decimal/detail/cmath/total_order.hpp | 86 +++++++++++++++++++ 1 file changed, 86 insertions(+) diff --git a/include/boost/decimal/detail/cmath/total_order.hpp b/include/boost/decimal/detail/cmath/total_order.hpp index 40c88dfeb..0555bc9b5 100644 --- a/include/boost/decimal/detail/cmath/total_order.hpp +++ b/include/boost/decimal/detail/cmath/total_order.hpp @@ -5,15 +5,61 @@ #ifndef BOOST_DECIMAL_DETAIL_CMATH_TOTAL_ORDER_HPP #define BOOST_DECIMAL_DETAIL_CMATH_TOTAL_ORDER_HPP +#include #include #include #include +#include namespace boost { namespace decimal { +constexpr auto quantexp(decimal32_t x) noexcept -> int; +constexpr auto quantexp(decimal_fast32_t x) noexcept -> int; +constexpr auto quantexp(decimal64_t x) noexcept -> int; +constexpr auto quantexp(decimal_fast64_t x) noexcept -> int; +constexpr auto quantexp(decimal128_t x) noexcept -> int; +constexpr auto quantexp(decimal_fast128_t x) noexcept -> int; + namespace detail { +template +constexpr auto nan_comp(const T x, const bool x_neg, const T y, const bool y_neg) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, bool) +{ + const auto x_payload {read_payload(x)}; + const auto y_payload {read_payload(y)}; + + if (x_payload != y_payload) + { + if (!x_neg && !y_neg) + { + return x_payload < y_payload; + } + else if (x_neg && y_neg) + { + return x_payload > y_payload; + } + else if (x_neg && !y_neg) + { + return true; + } + else + { + return false; + } + } + + return false; +} + +template +constexpr auto nan_comp(const T, const bool, const T, const bool) noexcept + BOOST_DECIMAL_REQUIRES_RETURN(!detail::is_ieee_type_v, T, bool) +{ + return false; +} + template constexpr auto total_ordering_impl(const T x, const T y) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, bool) @@ -49,7 +95,47 @@ constexpr auto total_ordering_impl(const T x, const T y) noexcept return !y_neg; } // d.3.iii + // The results here depend on the type being used + // e.g. Fast types don't hold any payload + return nan_comp(x, x_neg, y, y_neg); + } + + if (x < y) + { + // part a + return true; + } + else if (x > y) + { + // part b + return false; + } + else + { + if (x == 0 && y == 0) + { + if (x_neg && !y_neg) + { + // c.1 + return true; + } + else if (!x_neg && y_neg) + { + // c.2 + return false; + } + } + if (x_neg && y_neg) + { + // c.3.i + return quantexp(x) >= quantexp(y); + } + else + { + // c.3.ii + return quantexp(x) <= quantexp(y); + } } } From e933b0b6fa07ec6eea6d1734fd221fd318e85ba3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 16:35:28 +0100 Subject: [PATCH 547/967] Test unequal values --- test/Jamfile | 1 + test/test_total_ordering.cpp | 45 ++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) create mode 100644 test/test_total_ordering.cpp diff --git a/test/Jamfile b/test/Jamfile index 514c61f65..591c0cc7b 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -184,6 +184,7 @@ run test_tanh.cpp ; run test_tgamma.cpp ; run test_to_chars.cpp ; run test_to_string.cpp ; +run test_total_ordering.cpp ; run test_zeta.cpp ; # Run the examples too diff --git a/test/test_total_ordering.cpp b/test/test_total_ordering.cpp new file mode 100644 index 000000000..e75966317 --- /dev/null +++ b/test/test_total_ordering.cpp @@ -0,0 +1,45 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include +#include +#include + +using namespace boost::decimal; + +static std::mt19937_64 rng(42); +static std::uniform_int_distribution dist(INT_MIN, INT_MAX); +static constexpr std::size_t N {1024}; + +template +void test_unequal() +{ + for (std::size_t i {}; i < N; ++i) + { + const auto lhs_int {dist(rng)}; + const auto rhs_int {dist(rng)}; + + const T lhs {lhs_int}; + const T rhs {rhs_int}; + + if (lhs_int < rhs_int) + { + BOOST_TEST(total_order(lhs, rhs)); + } + else if (lhs_int > rhs_int) + { + BOOST_TEST(!total_order(lhs, rhs)); + } + } +} + +int main() +{ + test_unequal(); + test_unequal(); + test_unequal(); + + return boost::report_errors(); +} From 8383e13f6ee7bffbb77acc24bd5e767daf442c24 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 16:40:19 +0100 Subject: [PATCH 548/967] Add testing of d.1 and d.2 --- test/test_total_ordering.cpp | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/test/test_total_ordering.cpp b/test/test_total_ordering.cpp index e75966317..88a0e6fb8 100644 --- a/test/test_total_ordering.cpp +++ b/test/test_total_ordering.cpp @@ -5,6 +5,7 @@ #include #include #include +#include #include using namespace boost::decimal; @@ -35,11 +36,39 @@ void test_unequal() } } +template +void test_part_d12() +{ + for (std::size_t i {}; i < N / 2U; ++i) + { + const auto rhs_int {dist(rng)}; + + const auto lhs {-std::numeric_limits::quiet_NaN()}; + const T rhs {rhs_int}; + + BOOST_TEST(total_order(lhs, rhs)); + } + + for (std::size_t i {}; i < N / 2U; ++i) + { + const auto lhs_int {dist(rng)}; + + const T lhs {lhs_int}; + const auto rhs {std::numeric_limits::quiet_NaN()}; + + BOOST_TEST(total_order(lhs, rhs)); + } +} + int main() { test_unequal(); test_unequal(); test_unequal(); + test_part_d12(); + test_part_d12(); + test_part_d12(); + return boost::report_errors(); } From 13776d362be54bd178ceda911b1a088ecea26bfd Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 16:54:02 +0100 Subject: [PATCH 549/967] Skip unneeded checks with fast types --- .../decimal/detail/cmath/total_order.hpp | 27 +++++++++++++++---- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/include/boost/decimal/detail/cmath/total_order.hpp b/include/boost/decimal/detail/cmath/total_order.hpp index 0555bc9b5..5bcdc1149 100644 --- a/include/boost/decimal/detail/cmath/total_order.hpp +++ b/include/boost/decimal/detail/cmath/total_order.hpp @@ -60,6 +60,11 @@ constexpr auto nan_comp(const T, const bool, const T, const bool) noexcept return false; } +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4127) // Conditional expression is constant +#endif + template constexpr auto total_ordering_impl(const T x, const T y) noexcept BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, T, bool) @@ -126,19 +131,31 @@ constexpr auto total_ordering_impl(const T x, const T y) noexcept } } - if (x_neg && y_neg) + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_ieee_type_v) { - // c.3.i - return quantexp(x) >= quantexp(y); + if (x_neg && y_neg) + { + // c.3.i + return quantexp(x) >= quantexp(y); + } + else + { + // c.3.ii + return quantexp(x) <= quantexp(y); + } } else { - // c.3.ii - return quantexp(x) <= quantexp(y); + // Since things are normalized this will always be true + return true; } } } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + } // namespace detail BOOST_DECIMAL_EXPORT template From 5a7400ba2b8074af016f8dd744743a3a9a7ef301 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 3 Nov 2025 16:54:07 +0100 Subject: [PATCH 550/967] Test fast types --- test/test_total_ordering.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/test/test_total_ordering.cpp b/test/test_total_ordering.cpp index 88a0e6fb8..ae89b5da7 100644 --- a/test/test_total_ordering.cpp +++ b/test/test_total_ordering.cpp @@ -66,9 +66,17 @@ int main() test_unequal(); test_unequal(); + test_unequal(); + test_unequal(); + test_unequal(); + test_part_d12(); test_part_d12(); test_part_d12(); + test_part_d12(); + test_part_d12(); + test_part_d12(); + return boost::report_errors(); } From 4a30c92af0f15727e1496a036f589ead9154d86d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 08:42:28 +0100 Subject: [PATCH 551/967] Add d.3.i and d.3.ii tests --- test/test_total_ordering.cpp | 43 ++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/test/test_total_ordering.cpp b/test/test_total_ordering.cpp index ae89b5da7..ec728d444 100644 --- a/test/test_total_ordering.cpp +++ b/test/test_total_ordering.cpp @@ -6,6 +6,7 @@ #include #include #include +#include #include using namespace boost::decimal; @@ -60,6 +61,44 @@ void test_part_d12() } } +template +void test_part_d3() +{ + // d.3.i + for (std::size_t i {}; i < N / 3; ++i) + { + const auto lhs_int {dist(rng)}; + const auto rhs_int {dist(rng)}; + + const T lhs {lhs_int * -std::numeric_limits::quiet_NaN()}; + const T rhs {rhs_int * std::numeric_limits::quiet_NaN()}; + + BOOST_TEST(total_order(lhs, rhs)); + BOOST_TEST(!total_order(rhs, lhs)); + BOOST_TEST(!total_order(rhs, rhs)); + } + + // d.3.ii + for (std::size_t i {}; i < N / 3; ++i) + { + const auto lhs_int {dist(rng)}; + const auto rhs_int {dist(rng)}; + + const T lhs {lhs_int * std::numeric_limits::signaling_NaN()}; + const T rhs {rhs_int * std::numeric_limits::quiet_NaN()}; + + BOOST_TEST(total_order(lhs, rhs)); + BOOST_TEST(!total_order(rhs, lhs)); + BOOST_TEST(!total_order(rhs, rhs)); + + const T neg_lhs {lhs_int * -std::numeric_limits::signaling_NaN()}; + const T neg_rhs {rhs_int * -std::numeric_limits::quiet_NaN()}; + + BOOST_TEST(!total_order(neg_lhs, neg_rhs)); + BOOST_TEST(total_order(neg_rhs, neg_lhs)); + } +} + int main() { test_unequal(); @@ -78,5 +117,9 @@ int main() test_part_d12(); test_part_d12(); + test_part_d3(); + test_part_d3(); + test_part_d3(); + return boost::report_errors(); } From cbf358f1added8e12d62aef4a6188c2304df26d1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 08:42:38 +0100 Subject: [PATCH 552/967] Fix ordering of mixed NAN --- include/boost/decimal/detail/cmath/total_order.hpp | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/cmath/total_order.hpp b/include/boost/decimal/detail/cmath/total_order.hpp index 5bcdc1149..a5e2d193b 100644 --- a/include/boost/decimal/detail/cmath/total_order.hpp +++ b/include/boost/decimal/detail/cmath/total_order.hpp @@ -95,9 +95,16 @@ constexpr auto total_ordering_impl(const T x, const T y) noexcept // d.3.ii const auto x_signaling {issignaling(x)}; const auto y_signaling {issignaling(y)}; - if (x_signaling && !y_signaling) + if (x_signaling || y_signaling) { - return !y_neg; + if (x_signaling && !y_signaling) + { + return !x_neg; + } + else if (!x_signaling && y_signaling) + { + return y_neg; + } } // d.3.iii // The results here depend on the type being used From 61e236232d310d2522cb548626e5783987ddb796 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 12:16:50 +0100 Subject: [PATCH 553/967] Rename function to match prior art --- include/boost/decimal/cmath.hpp | 2 +- .../{total_order.hpp => comparetotal.hpp} | 2 +- test/test_total_ordering.cpp | 24 +++++++++---------- 3 files changed, 14 insertions(+), 14 deletions(-) rename include/boost/decimal/detail/cmath/{total_order.hpp => comparetotal.hpp} (98%) diff --git a/include/boost/decimal/cmath.hpp b/include/boost/decimal/cmath.hpp index 33d599f8c..76e6fc110 100644 --- a/include/boost/decimal/cmath.hpp +++ b/include/boost/decimal/cmath.hpp @@ -78,7 +78,7 @@ #include #include #include -#include +#include #include // Macros from 3.6.2 diff --git a/include/boost/decimal/detail/cmath/total_order.hpp b/include/boost/decimal/detail/cmath/comparetotal.hpp similarity index 98% rename from include/boost/decimal/detail/cmath/total_order.hpp rename to include/boost/decimal/detail/cmath/comparetotal.hpp index a5e2d193b..03d589e9a 100644 --- a/include/boost/decimal/detail/cmath/total_order.hpp +++ b/include/boost/decimal/detail/cmath/comparetotal.hpp @@ -166,7 +166,7 @@ constexpr auto total_ordering_impl(const T x, const T y) noexcept } // namespace detail BOOST_DECIMAL_EXPORT template -constexpr auto total_order(const T1 lhs, const T2 rhs) noexcept +constexpr auto comparetotal(const T1 lhs, const T2 rhs) noexcept BOOST_DECIMAL_REQUIRES_TWO_RETURN(detail::is_decimal_floating_point_v, T1, detail::is_decimal_floating_point_v, T2, bool) { using larger_type = std::conditional_t >= detail::decimal_val_v, T1, T2>; diff --git a/test/test_total_ordering.cpp b/test/test_total_ordering.cpp index ec728d444..ef6644186 100644 --- a/test/test_total_ordering.cpp +++ b/test/test_total_ordering.cpp @@ -28,11 +28,11 @@ void test_unequal() if (lhs_int < rhs_int) { - BOOST_TEST(total_order(lhs, rhs)); + BOOST_TEST(comparetotal(lhs, rhs)); } else if (lhs_int > rhs_int) { - BOOST_TEST(!total_order(lhs, rhs)); + BOOST_TEST(!comparetotal(lhs, rhs)); } } } @@ -47,7 +47,7 @@ void test_part_d12() const auto lhs {-std::numeric_limits::quiet_NaN()}; const T rhs {rhs_int}; - BOOST_TEST(total_order(lhs, rhs)); + BOOST_TEST(comparetotal(lhs, rhs)); } for (std::size_t i {}; i < N / 2U; ++i) @@ -57,7 +57,7 @@ void test_part_d12() const T lhs {lhs_int}; const auto rhs {std::numeric_limits::quiet_NaN()}; - BOOST_TEST(total_order(lhs, rhs)); + BOOST_TEST(comparetotal(lhs, rhs)); } } @@ -73,9 +73,9 @@ void test_part_d3() const T lhs {lhs_int * -std::numeric_limits::quiet_NaN()}; const T rhs {rhs_int * std::numeric_limits::quiet_NaN()}; - BOOST_TEST(total_order(lhs, rhs)); - BOOST_TEST(!total_order(rhs, lhs)); - BOOST_TEST(!total_order(rhs, rhs)); + BOOST_TEST(comparetotal(lhs, rhs)); + BOOST_TEST(!comparetotal(rhs, lhs)); + BOOST_TEST(!comparetotal(rhs, rhs)); } // d.3.ii @@ -87,15 +87,15 @@ void test_part_d3() const T lhs {lhs_int * std::numeric_limits::signaling_NaN()}; const T rhs {rhs_int * std::numeric_limits::quiet_NaN()}; - BOOST_TEST(total_order(lhs, rhs)); - BOOST_TEST(!total_order(rhs, lhs)); - BOOST_TEST(!total_order(rhs, rhs)); + BOOST_TEST(comparetotal(lhs, rhs)); + BOOST_TEST(!comparetotal(rhs, lhs)); + BOOST_TEST(!comparetotal(rhs, rhs)); const T neg_lhs {lhs_int * -std::numeric_limits::signaling_NaN()}; const T neg_rhs {rhs_int * -std::numeric_limits::quiet_NaN()}; - BOOST_TEST(!total_order(neg_lhs, neg_rhs)); - BOOST_TEST(total_order(neg_rhs, neg_lhs)); + BOOST_TEST(!comparetotal(neg_lhs, neg_rhs)); + BOOST_TEST(comparetotal(neg_rhs, neg_lhs)); } } From f6e7729c829a0c3cef2bdd366d2e01346a6c1501 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 12:18:01 +0100 Subject: [PATCH 554/967] Add testing of fast types now that they support nan payloads --- test/test_total_ordering.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/test/test_total_ordering.cpp b/test/test_total_ordering.cpp index ef6644186..e79c48aaa 100644 --- a/test/test_total_ordering.cpp +++ b/test/test_total_ordering.cpp @@ -121,5 +121,9 @@ int main() test_part_d3(); test_part_d3(); + test_part_d3(); + test_part_d3(); + test_part_d3(); + return boost::report_errors(); } From ba1c5a005e74ce77591975fc915a641f122a184a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 12:32:13 +0100 Subject: [PATCH 555/967] Remove now unneeded type base bifurcation --- .../decimal/detail/cmath/comparetotal.hpp | 64 +++++++------------ 1 file changed, 24 insertions(+), 40 deletions(-) diff --git a/include/boost/decimal/detail/cmath/comparetotal.hpp b/include/boost/decimal/detail/cmath/comparetotal.hpp index 03d589e9a..9551f16a1 100644 --- a/include/boost/decimal/detail/cmath/comparetotal.hpp +++ b/include/boost/decimal/detail/cmath/comparetotal.hpp @@ -23,43 +23,6 @@ constexpr auto quantexp(decimal_fast128_t x) noexcept -> int; namespace detail { -template -constexpr auto nan_comp(const T x, const bool x_neg, const T y, const bool y_neg) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(detail::is_ieee_type_v, T, bool) -{ - const auto x_payload {read_payload(x)}; - const auto y_payload {read_payload(y)}; - - if (x_payload != y_payload) - { - if (!x_neg && !y_neg) - { - return x_payload < y_payload; - } - else if (x_neg && y_neg) - { - return x_payload > y_payload; - } - else if (x_neg && !y_neg) - { - return true; - } - else - { - return false; - } - } - - return false; -} - -template -constexpr auto nan_comp(const T, const bool, const T, const bool) noexcept - BOOST_DECIMAL_REQUIRES_RETURN(!detail::is_ieee_type_v, T, bool) -{ - return false; -} - #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable : 4127) // Conditional expression is constant @@ -107,9 +70,30 @@ constexpr auto total_ordering_impl(const T x, const T y) noexcept } } // d.3.iii - // The results here depend on the type being used - // e.g. Fast types don't hold any payload - return nan_comp(x, x_neg, y, y_neg); + const auto x_payload {read_payload(x)}; + const auto y_payload {read_payload(y)}; + + if (x_payload != y_payload) + { + if (!x_neg && !y_neg) + { + return x_payload < y_payload; + } + else if (x_neg && y_neg) + { + return x_payload > y_payload; + } + else if (x_neg && !y_neg) + { + return true; + } + else + { + return false; + } + } + + return false; } if (x < y) From d216a3c1d6ec81252c281ac1075527ac3385ad87 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 12:35:09 +0100 Subject: [PATCH 556/967] Add testing of path d.3.iii --- test/test_total_ordering.cpp | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/test/test_total_ordering.cpp b/test/test_total_ordering.cpp index e79c48aaa..1dcb0bc21 100644 --- a/test/test_total_ordering.cpp +++ b/test/test_total_ordering.cpp @@ -13,6 +13,7 @@ using namespace boost::decimal; static std::mt19937_64 rng(42); static std::uniform_int_distribution dist(INT_MIN, INT_MAX); +static std::uniform_int_distribution payload_dist(0U, 10U); static constexpr std::size_t N {1024}; template @@ -97,6 +98,35 @@ void test_part_d3() BOOST_TEST(!comparetotal(neg_lhs, neg_rhs)); BOOST_TEST(comparetotal(neg_rhs, neg_lhs)); } + + // d.3.iii + for (std::size_t i {}; i < N / 3; ++i) + { + const auto lhs_int {payload_dist(rng)}; + const auto rhs_int {payload_dist(rng)}; + + const auto lhs_int_string {std::to_string(lhs_int)}; + const auto rhs_int_string {std::to_string(rhs_int)}; + + const auto lhs {nan(lhs_int_string.c_str())}; + const auto rhs {nan(rhs_int_string.c_str())}; + + if (lhs_int < rhs_int) + { + BOOST_TEST(comparetotal(lhs, rhs)); + BOOST_TEST(!comparetotal(rhs, lhs)); + } + else if (lhs_int > rhs_int) + { + BOOST_TEST(!comparetotal(lhs, rhs)); + BOOST_TEST(comparetotal(rhs, lhs)); + } + else + { + BOOST_TEST(!comparetotal(lhs, rhs)); + BOOST_TEST(!comparetotal(rhs, lhs)); + } + } } int main() From 0fb69afa008039b6653b04f93607c757ae1955b0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 4 Nov 2025 13:19:23 +0100 Subject: [PATCH 557/967] Add comparetotal function to cmath documentation page --- doc/modules/ROOT/pages/cmath.adoc | 42 +++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 4df937e19..31b62b1bc 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -702,3 +702,45 @@ The function returns the decimal type with number of fractional digits equal to `rescale` is similar to https://en.cppreference.com/w/cpp/numeric/math/trunc[trunc], and with the default precision argument of 0 it is identical. NOTE: This function was previously known as `trunc_to` which was deprecated in v5.0.0 and removed in v6.0.0 + +=== `comparetotal` + +[source, c++] +---- +#include + +namespace boost { +namespace decimal { + +template +constexpr bool comparetotal(DecimalType x, DecimalType y) noexcept; + +} // namespace decimal +} // namespace boost +---- + +This function is an extended version of normal ordering to take into account payloads of NANs, and canonical forms. + +Effects: + +. If x < y returns `true` + +. If x > y returns `false` + +. If x == y: +.. -0 < +0 is `true` +.. +0 < -0 is `false` +.. If x and y have the same sign: +... If x and y are both negative, `comparetotal(x, y)` is `true` IFF the exponent of x pass:[>=] exponent of y +... Otherwise, `comparetotal(x, y)` is `true` IFF the exponent of x pass:[<=] y + +. If x and y are unordered because x or y is a NAN: +.. `comparetotal(-NAN, y)` is `true` +.. `comparetotal(x, +NAN)` is `true` +.. If x and y are both NAN: +... `comparetotal(-NAN, +NAN)` returns `true` +... `comparetotal(+SNAN, +QNAN)` returns `true` +... `comparetotal(-QNAN, -SNAN)` returns `true` +... `comparetotal(NAN, NAN)` +.... If both `NAN` are positive returns `true` if the payload of `x` is less than the payload of `y` +.... If both `NAN` are negative returns `true` if the payload of `x` is greater than the payload of `y` From 6d30b0752542e7f3e466db91fbed3e194d3d649c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 12:04:42 +0100 Subject: [PATCH 558/967] Allow sNaN to be parsed and use exponent to communicate type --- include/boost/decimal/charconv.hpp | 2 +- include/boost/decimal/detail/parser.hpp | 18 +++++++++++++----- 2 files changed, 14 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index e857f72b1..91fc65add 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -81,7 +81,7 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ { if (r.ec == std::errc::not_supported) { - if (significand) + if (expval > 0) { value = std::numeric_limits::signaling_NaN(); } diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index a3affb537..529be6c21 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -103,6 +103,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ // // This is nested ifs rather than a big one-liner to ensure that once we hit an invalid character // or an end of buffer we return the correct value of next + bool signaling {}; if (next != last && (*next == 'i' || *next == 'I')) { ++next; @@ -112,14 +113,21 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ if (next != last && (*next == 'f' || *next == 'F')) { ++next; - significand = 0; + exponent = 0; return {next, std::errc::value_too_large}; } } return {first, std::errc::invalid_argument}; } - else if (next != last && (*next == 'n' || *next == 'N')) + + if (next != last && (*next == 's' || *next == 'S')) + { + ++next; + signaling = true; + } + + if (next != last && (*next == 'n' || *next == 'N')) { ++next; if (next != last && (*next == 'a' || *next == 'A')) @@ -138,14 +146,14 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ && (*(next + 2) == 'a' || *(next + 2) == 'A') && (*(next + 3) == 'n' || *(next + 3) == 'N')) { next += 3; - significand = 1; + exponent = 1; } // Handle Nan(IND) else if ((last - next) >= 3 && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'd' || *(next + 2) == 'D')) { next += 2; - significand = 0; + exponent = 0; } // Arbitrary payload @@ -177,7 +185,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ } else { - significand = 0; + exponent = static_cast(signaling); return {next, std::errc::not_supported}; } } From 5f22b42ffdf34a9b8bac6abf1302baeef5cb30f5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 12:12:12 +0100 Subject: [PATCH 559/967] Add parsing of arbitrary numerical payload --- include/boost/decimal/detail/parser.hpp | 28 +++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index 529be6c21..1e23de271 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -98,6 +98,9 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ sign = false; } + constexpr std::size_t significand_buffer_size = std::numeric_limits::digits10 ; + char significand_buffer[significand_buffer_size] {}; + // Handle non-finite values // Stl allows for string like "iNf" to return inf // @@ -138,6 +141,11 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++next; if (next != last && (*next == '(')) { + if (*next == '(') + { + ++next; + } + const auto current_pos {next}; ++next; @@ -156,13 +164,16 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ exponent = 0; } - // Arbitrary payload + // Arbitrary numerical payload bool valid_payload {false}; + auto significand_buffer_first {significand_buffer}; + std::size_t significand_characters {}; while (next != last && (*next != ')')) { - if (is_payload_char(*next)) + if (significand_characters < significand_buffer_size && is_integer_char(*next)) { - ++next; + ++significand_characters; + *significand_buffer_first++ = *next++; valid_payload = true; } else @@ -181,7 +192,14 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ next = current_pos; } - return {next, std::errc::not_supported}; + if (significand_characters != 0) + { + return from_chars_dispatch(significand_buffer, significand_buffer + significand_characters, significand, 10); + } + else + { + return {next, std::errc::not_supported}; + } } else { @@ -212,8 +230,6 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ } // Next we get the significand - constexpr std::size_t significand_buffer_size = std::numeric_limits::digits10 ; - char significand_buffer[significand_buffer_size] {}; std::size_t i = 0; std::size_t dot_position = 0; Integer extra_zeros = 0; From 73df1251ec8b1a4c1a37965c24dfd9824ce45793 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 12:29:55 +0100 Subject: [PATCH 560/967] Simplifications --- include/boost/decimal/detail/cmath/nan.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 7eed1fbe8..dcf49ca14 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -66,8 +66,6 @@ constexpr auto nan_impl(const char* arg) noexcept sizeof(TargetDecimalType) == sizeof(std::uint64_t) ? 53U : 110U}; constexpr sig_type max_payload_value {(static_cast(1) << significand_field_bits) - 1U}; - constexpr TargetDecimalType zero {}; - constexpr TargetDecimalType zero_bits {zero ^ zero}; sig_type payload_value {}; const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), payload_value, 10)}; @@ -78,6 +76,8 @@ constexpr auto nan_impl(const char* arg) noexcept } else { + constexpr TargetDecimalType zero {}; + constexpr TargetDecimalType zero_bits {zero ^ zero}; return (zero_bits | payload_value) | nan_type; } } From 675979f920356ec95bfccc83d3d486ea37a2041c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 13:13:32 +0100 Subject: [PATCH 561/967] Re-architect writing of payloads for nan function family --- include/boost/decimal/decimal_fast128_t.hpp | 4 +- include/boost/decimal/decimal_fast32_t.hpp | 4 +- include/boost/decimal/decimal_fast64_t.hpp | 4 +- include/boost/decimal/detail/cmath/nan.hpp | 8 ++-- .../boost/decimal/detail/write_payload.hpp | 45 +++++++++++++++++++ 5 files changed, 54 insertions(+), 11 deletions(-) create mode 100644 include/boost/decimal/detail/write_payload.hpp diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index ecd94ea54..bb7e227a8 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -74,7 +74,7 @@ template constexpr auto to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; template -constexpr auto nan_impl(const char* arg) noexcept +constexpr auto write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); } // namespace detail @@ -196,7 +196,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final friend constexpr auto detail::to_chars_cohort_preserving_scientific(char* first, char* last, const TargetDecimalType& value) noexcept -> to_chars_result; template - friend constexpr auto detail::nan_impl(const char* arg) noexcept + friend constexpr auto detail::write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); template diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 11de1002d..3ab0e4773 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -72,7 +72,7 @@ template constexpr auto d32_fma_impl(T x, T y, T z) noexcept -> T; template -constexpr auto nan_impl(const char* arg) noexcept +constexpr auto write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); } // namespace detail @@ -196,7 +196,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final friend constexpr auto detail::generic_div_impl(const T& lhs, const T& rhs) noexcept -> DecimalType; template - friend constexpr auto detail::nan_impl(const char* arg) noexcept + friend constexpr auto detail::write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); template diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index a7ba82332..4547c7b65 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -74,7 +74,7 @@ template constexpr auto d64_fma_impl(T x, T y, T z) noexcept -> T; template -constexpr auto nan_impl(const char* arg) noexcept +constexpr auto write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); } // namespace detail @@ -203,7 +203,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final friend constexpr auto detail::d64_fma_impl(T x, T y, T z) noexcept -> T; template - friend constexpr auto detail::nan_impl(const char* arg) noexcept + friend constexpr auto detail::write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType); template diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index dcf49ca14..d84bce1cd 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -11,6 +11,7 @@ #include #include #include +#include #include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -48,8 +49,7 @@ constexpr auto nan_impl(const char* arg) noexcept } else { - return_value.significand_ |= payload_value; - return return_value; + return write_payload(payload_value); } } @@ -76,9 +76,7 @@ constexpr auto nan_impl(const char* arg) noexcept } else { - constexpr TargetDecimalType zero {}; - constexpr TargetDecimalType zero_bits {zero ^ zero}; - return (zero_bits | payload_value) | nan_type; + return write_payload(payload_value); } } diff --git a/include/boost/decimal/detail/write_payload.hpp b/include/boost/decimal/detail/write_payload.hpp new file mode 100644 index 000000000..b1c0513c5 --- /dev/null +++ b/include/boost/decimal/detail/write_payload.hpp @@ -0,0 +1,45 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_DETAIL_WRITE_PAYLOAD_HPP +#define BOOST_DECIMAL_DETAIL_WRITE_PAYLOAD_HPP + +#include +#include +#include + +namespace boost { +namespace decimal { +namespace detail { + +template +constexpr auto write_payload(typename TargetDecimalType::significand_type payload_value) + BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType) +{ + constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : + std::numeric_limits::quiet_NaN()}; + + TargetDecimalType return_value {nan_type}; + return_value.significand_ |= payload_value; + return return_value; +} + +template +constexpr auto write_payload(typename TargetDecimalType::significand_type payload_value) + BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, TargetDecimalType) +{ + constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : + std::numeric_limits::quiet_NaN()}; + + constexpr TargetDecimalType zero {}; + constexpr TargetDecimalType zero_bits {zero ^ zero}; + + return (zero_bits | payload_value) | nan_type; +} + +} // namespace detail +} // namespace decimal +} // namespace boost + +#endif // BOOST_DECIMAL_DETAIL_WRITE_PAYLOAD_HPP From a6faa676fa359757266718420dd3e98f5f5272a8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 13:15:55 +0100 Subject: [PATCH 562/967] Add support for writing arbitrary payloads in from_chars --- include/boost/decimal/charconv.hpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 91fc65add..4110da01f 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -26,6 +26,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -83,11 +84,11 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ { if (expval > 0) { - value = std::numeric_limits::signaling_NaN(); + value = write_payload(significand); } else { - value = std::numeric_limits::quiet_NaN(); + value = write_payload(significand); } r.ec = std::errc(); From ca3f7d87b82787113d1015dc1c2f32f1cc460398 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 13:46:57 +0100 Subject: [PATCH 563/967] Add tests --- test/Jamfile | 1 + test/test_from_chars_nan_payloads.cpp | 42 +++++++++++++++++++++++++++ 2 files changed, 43 insertions(+) create mode 100644 test/test_from_chars_nan_payloads.cpp diff --git a/test/Jamfile b/test/Jamfile index 591c0cc7b..f3f84151a 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -147,6 +147,7 @@ run test_format_fmtlib.cpp ; run-fail test_fprintf.cpp ; run test_frexp_ldexp.cpp ; run test_from_chars.cpp /boost/charconv//boost_charconv ; +run test_from_chars_nan_payloads.cpp ; run test_git_issue_266.cpp ; run test_git_issue_271.cpp ; run test_hash.cpp ; diff --git a/test/test_from_chars_nan_payloads.cpp b/test/test_from_chars_nan_payloads.cpp new file mode 100644 index 000000000..0ed9343d4 --- /dev/null +++ b/test/test_from_chars_nan_payloads.cpp @@ -0,0 +1,42 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include +#include + +using namespace boost::decimal; + +template +void test_signaling() +{ + const std::array lhs_values { "nan(snan)", "SNAN", "SNAN(42)", "SNAN42", "sNaN400JUNK", "nan(snan42)" }; + const std::array rhs_values { "nan(snan)", "SNAN", "SNAN(43)", "SNAN43", "SnAn410JUNK", "nan(snan4000)" }; + + for (std::size_t i {}; i < lhs_values.size(); ++i) + { + std::cerr << "I: " << i << std::endl; + const T lhs {lhs_values[i]}; + const T rhs {rhs_values[i]}; + + BOOST_TEST(isnan(lhs)); + BOOST_TEST(isnan(rhs)); + + BOOST_TEST(issignaling(lhs)); + BOOST_TEST(issignaling(rhs)); + + if (i >= 2) + { + // A nan with a higher payload compares higher + BOOST_TEST(comparetotal(lhs, rhs)); + } + } +} + +int main() +{ + test_signaling(); + + return boost::report_errors(); +} From 9de8e15aa55fcae465aaf766cd0db9646d6928b3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 13:47:12 +0100 Subject: [PATCH 564/967] Testing based fixes to parsing of snan payloads and construction --- include/boost/decimal/detail/parser.hpp | 30 +++++++++---------------- 1 file changed, 10 insertions(+), 20 deletions(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index 1e23de271..a69630723 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -139,33 +139,28 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ if (next != last && (*next == 'n' || *next == 'N')) { ++next; - if (next != last && (*next == '(')) + if (next != last) { if (*next == '(') { ++next; } - const auto current_pos {next}; - ++next; - // Handle nan(SNAN) if ((last - next) >= 4 && (*next == 's' || *next == 'S') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'a' || *(next + 2) == 'A') && (*(next + 3) == 'n' || *(next + 3) == 'N')) { next += 3; - exponent = 1; + signaling = true; } // Handle Nan(IND) else if ((last - next) >= 3 && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'd' || *(next + 2) == 'D')) { next += 2; - exponent = 0; } // Arbitrary numerical payload - bool valid_payload {false}; auto significand_buffer_first {significand_buffer}; std::size_t significand_characters {}; while (next != last && (*next != ')')) @@ -174,36 +169,31 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ { ++significand_characters; *significand_buffer_first++ = *next++; - valid_payload = true; } else { - valid_payload = false; + // End of valid payload even if there are more characters + // e.g. SNAN42JUNK stops at J break; } } - if (valid_payload) + if (next != last && (*next != ')')) { ++next; } - else - { - next = current_pos; - } if (significand_characters != 0) { - return from_chars_dispatch(significand_buffer, significand_buffer + significand_characters, significand, 10); - } - else - { - return {next, std::errc::not_supported}; + from_chars_dispatch(significand_buffer, significand_buffer + significand_characters, significand, 10); } + + exponent = static_cast(signaling); + return {next, std::errc::not_supported}; } else { - exponent = static_cast(signaling); + exponent = static_cast(signaling); return {next, std::errc::not_supported}; } } From 70fa76f86ce824a6f9fc1eb2298644db4efdefe6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 13:49:41 +0100 Subject: [PATCH 565/967] Fix offset for nan parsing --- include/boost/decimal/detail/parser.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index a69630723..0ad6da3d9 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -150,14 +150,14 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ if ((last - next) >= 4 && (*next == 's' || *next == 'S') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'a' || *(next + 2) == 'A') && (*(next + 3) == 'n' || *(next + 3) == 'N')) { - next += 3; + next += 4; signaling = true; } // Handle Nan(IND) else if ((last - next) >= 3 && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') && (*(next + 2) == 'd' || *(next + 2) == 'D')) { - next += 2; + next += 3; } // Arbitrary numerical payload From 7c3e5c77b894d9c3d1ae963a50f7e4745ff59e06 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 13:51:11 +0100 Subject: [PATCH 566/967] Add testing of other decimal types --- test/test_from_chars_nan_payloads.cpp | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/test/test_from_chars_nan_payloads.cpp b/test/test_from_chars_nan_payloads.cpp index 0ed9343d4..5c76c3229 100644 --- a/test/test_from_chars_nan_payloads.cpp +++ b/test/test_from_chars_nan_payloads.cpp @@ -5,18 +5,18 @@ #include #include #include +#include using namespace boost::decimal; template void test_signaling() { - const std::array lhs_values { "nan(snan)", "SNAN", "SNAN(42)", "SNAN42", "sNaN400JUNK", "nan(snan42)" }; - const std::array rhs_values { "nan(snan)", "SNAN", "SNAN(43)", "SNAN43", "SnAn410JUNK", "nan(snan4000)" }; + const std::array lhs_values { "nan(snan)", "SNAN", "SNAN(42)", "SNAN42", "sNaN400JUNK", "nan(snan42)" }; + const std::array rhs_values { "nan(snan)", "SNAN", "SNAN(43)", "SNAN43", "SnAn410JUNK", "nan(snan4000)" }; for (std::size_t i {}; i < lhs_values.size(); ++i) { - std::cerr << "I: " << i << std::endl; const T lhs {lhs_values[i]}; const T rhs {rhs_values[i]}; @@ -37,6 +37,12 @@ void test_signaling() int main() { test_signaling(); + test_signaling(); + test_signaling(); + + test_signaling(); + test_signaling(); + test_signaling(); return boost::report_errors(); } From 22dfffd485f40684f1806dd974123293ab0ad9af Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 13:55:33 +0100 Subject: [PATCH 567/967] Add qnan testing and change some capitalization --- test/test_from_chars_nan_payloads.cpp | 37 +++++++++++++++++++++++++-- 1 file changed, 35 insertions(+), 2 deletions(-) diff --git a/test/test_from_chars_nan_payloads.cpp b/test/test_from_chars_nan_payloads.cpp index 5c76c3229..bddefbbd3 100644 --- a/test/test_from_chars_nan_payloads.cpp +++ b/test/test_from_chars_nan_payloads.cpp @@ -12,8 +12,8 @@ using namespace boost::decimal; template void test_signaling() { - const std::array lhs_values { "nan(snan)", "SNAN", "SNAN(42)", "SNAN42", "sNaN400JUNK", "nan(snan42)" }; - const std::array rhs_values { "nan(snan)", "SNAN", "SNAN(43)", "SNAN43", "SnAn410JUNK", "nan(snan4000)" }; + const std::array lhs_values { "NAN(SNAN)", "SNAN", "SNAN(42)", "SNAN42", "sNaN400JUNK", "NAN(SNAN42)" }; + const std::array rhs_values { "nan(snan)", "snan", "snan(43)", "snan43", "SnAn410JUNK", "nan(snan4000)" }; for (std::size_t i {}; i < lhs_values.size(); ++i) { @@ -34,6 +34,31 @@ void test_signaling() } } +template +void test_quiet() +{ + const std::array lhs_values { "nan(IND)", "NAN", "NAN(42)", "NAN42", "NaN400JUNK", "nan(IND4200)" }; + const std::array rhs_values { "nan(ind)", "nan", "nan(43)", "nan43", "nAn410junk", "nan(ind4000)" }; + + for (std::size_t i {}; i < lhs_values.size(); ++i) + { + const T lhs {lhs_values[i]}; + const T rhs {rhs_values[i]}; + + BOOST_TEST(isnan(lhs)); + BOOST_TEST(isnan(rhs)); + + BOOST_TEST(!issignaling(lhs)); + BOOST_TEST(!issignaling(rhs)); + + if (i >= 2) + { + // A nan with a higher payload compares higher + BOOST_TEST(comparetotal(lhs, rhs)); + } + } +} + int main() { test_signaling(); @@ -44,5 +69,13 @@ int main() test_signaling(); test_signaling(); + test_quiet(); + test_quiet(); + test_quiet(); + + test_quiet(); + test_quiet(); + test_quiet(); + return boost::report_errors(); } From 30c163bb0a35358438a8800c118aaecf62c311aa Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 14:21:35 +0100 Subject: [PATCH 568/967] Fix parsing of sign from nan(ind) --- include/boost/decimal/detail/parser.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index 0ad6da3d9..30a25c6d2 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -158,6 +158,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ && (*(next + 2) == 'd' || *(next + 2) == 'D')) { next += 3; + sign = true; } // Arbitrary numerical payload From 8ce8d5230c49279fdeb3ca31ac24518ec71df923 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 14:24:20 +0100 Subject: [PATCH 569/967] Handle sign coming out of indeterminate parse --- include/boost/decimal/charconv.hpp | 5 +++++ test/test_from_chars_nan_payloads.cpp | 8 ++++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 4110da01f..ca7298959 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -91,6 +91,11 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ value = write_payload(significand); } + if (sign) + { + value = -value; + } + r.ec = std::errc(); } else if (r.ec == std::errc::value_too_large) diff --git a/test/test_from_chars_nan_payloads.cpp b/test/test_from_chars_nan_payloads.cpp index bddefbbd3..a18fde675 100644 --- a/test/test_from_chars_nan_payloads.cpp +++ b/test/test_from_chars_nan_payloads.cpp @@ -12,8 +12,8 @@ using namespace boost::decimal; template void test_signaling() { - const std::array lhs_values { "NAN(SNAN)", "SNAN", "SNAN(42)", "SNAN42", "sNaN400JUNK", "NAN(SNAN42)" }; - const std::array rhs_values { "nan(snan)", "snan", "snan(43)", "snan43", "SnAn410JUNK", "nan(snan4000)" }; + const std::array lhs_values { "NAN(SNAN)", "SNAN", "SNAN(42)", "SNAN42", "+sNaN400JUNK", "NAN(SNAN42)" }; + const std::array rhs_values { "nan(snan)", "snan", "snan(43)", "snan43", "+SnAn410JUNK", "nan(snan4000)" }; for (std::size_t i {}; i < lhs_values.size(); ++i) { @@ -37,8 +37,8 @@ void test_signaling() template void test_quiet() { - const std::array lhs_values { "nan(IND)", "NAN", "NAN(42)", "NAN42", "NaN400JUNK", "nan(IND4200)" }; - const std::array rhs_values { "nan(ind)", "nan", "nan(43)", "nan43", "nAn410junk", "nan(ind4000)" }; + const std::array lhs_values { "nan(IND)", "NAN", "NAN(42)", "NAN42", "NaN400JUNK", "-nan(IND4200)" }; + const std::array rhs_values { "nan(ind)", "nan", "nan(43)", "nan43", "nAn410junk", "-nan(ind4000)" }; for (std::size_t i {}; i < lhs_values.size(); ++i) { From 2ea363a156ac2fd4d4ee7e5e6ef8523956f89a97 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 15:11:42 +0100 Subject: [PATCH 570/967] Move error checks into actual writing of the payload --- include/boost/decimal/detail/cmath/nan.hpp | 18 ++++++----- .../boost/decimal/detail/write_payload.hpp | 30 +++++++++++++++++-- 2 files changed, 38 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index d84bce1cd..beada82af 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -34,16 +34,20 @@ constexpr auto nan_impl(const char* arg) noexcept constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : std::numeric_limits::quiet_NaN()}; - constexpr std::uint32_t significand_field_bits {decimal_val_v < 64 ? 23U : - decimal_val_v < 128 ? 53U : 110U}; - - constexpr sig_type max_payload_value {(static_cast(1) << significand_field_bits) - 1U}; - sig_type payload_value {}; const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), payload_value, 10)}; + if (!r) + { + return nan_type; + } + else + { + return write_payload(payload_value); + } + TargetDecimalType return_value {nan_type}; - if (!r || payload_value > max_payload_value) + if (!r) { return return_value; } @@ -70,7 +74,7 @@ constexpr auto nan_impl(const char* arg) noexcept sig_type payload_value {}; const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), payload_value, 10)}; - if (!r || payload_value > max_payload_value) + if (!r) { return nan_type; } diff --git a/include/boost/decimal/detail/write_payload.hpp b/include/boost/decimal/detail/write_payload.hpp index b1c0513c5..b289bb6a0 100644 --- a/include/boost/decimal/detail/write_payload.hpp +++ b/include/boost/decimal/detail/write_payload.hpp @@ -17,11 +17,22 @@ template constexpr auto write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_fast_type_v, TargetDecimalType) { + using sig_type = typename TargetDecimalType::significand_type; + constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : std::numeric_limits::quiet_NaN()}; + constexpr std::uint32_t significand_field_bits {decimal_val_v < 64 ? 23U : + decimal_val_v < 128 ? 53U : 110U}; + + constexpr sig_type max_payload_value {(static_cast(1) << significand_field_bits) - 1U}; + TargetDecimalType return_value {nan_type}; - return_value.significand_ |= payload_value; + if (payload_value < max_payload_value) + { + return_value.significand_ |= payload_value; + } + return return_value; } @@ -29,13 +40,26 @@ template constexpr auto write_payload(typename TargetDecimalType::significand_type payload_value) BOOST_DECIMAL_REQUIRES(detail::is_ieee_type_v, TargetDecimalType) { + using sig_type = typename TargetDecimalType::significand_type; + constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : - std::numeric_limits::quiet_NaN()}; + std::numeric_limits::quiet_NaN()}; + + constexpr std::uint32_t significand_field_bits {decimal_val_v < 64 ? 23U : + decimal_val_v < 128 ? 53U : 110U}; + + constexpr sig_type max_payload_value {(static_cast(1) << significand_field_bits) - 1U}; constexpr TargetDecimalType zero {}; constexpr TargetDecimalType zero_bits {zero ^ zero}; - return (zero_bits | payload_value) | nan_type; + TargetDecimalType return_value {nan_type}; + if (payload_value < max_payload_value) + { + return_value = (zero_bits | payload_value) | nan_type; + } + + return return_value; } } // namespace detail From 2bcde938376c25873326c751741d1cb5c01d812b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 15:16:09 +0100 Subject: [PATCH 571/967] Convert type for insertion into payload --- include/boost/decimal/charconv.hpp | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index ca7298959..1ea4e99f7 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -82,13 +82,21 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ { if (r.ec == std::errc::not_supported) { + using resultant_sig_type = typename TargetDecimalType::significand_type; + + resultant_sig_type payload_value {}; + if (significand < std::numeric_limits::max()) + { + payload_value = static_cast(significand); + } + if (expval > 0) { - value = write_payload(significand); + value = write_payload(payload_value); } else { - value = write_payload(significand); + value = write_payload(payload_value); } if (sign) From f9a260545df086972f162da5e63abafef6ba8ded Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 15:16:20 +0100 Subject: [PATCH 572/967] Remove now unused variables --- include/boost/decimal/detail/cmath/nan.hpp | 5 ----- 1 file changed, 5 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index beada82af..84dc70f50 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -66,11 +66,6 @@ constexpr auto nan_impl(const char* arg) noexcept constexpr TargetDecimalType nan_type {is_snan ? std::numeric_limits::signaling_NaN() : std::numeric_limits::quiet_NaN()}; - constexpr std::uint32_t significand_field_bits {sizeof(TargetDecimalType) == sizeof(std::uint32_t) ? 23U : - sizeof(TargetDecimalType) == sizeof(std::uint64_t) ? 53U : 110U}; - - constexpr sig_type max_payload_value {(static_cast(1) << significand_field_bits) - 1U}; - sig_type payload_value {}; const auto r {from_chars_integer_impl(arg, arg + detail::strlen(arg), payload_value, 10)}; From f43a7621b2eca544051236ae4f9cb850425ab854 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 5 Nov 2025 16:02:19 +0100 Subject: [PATCH 573/967] Fix position of non-finite endptr --- include/boost/decimal/detail/parser.hpp | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index 30a25c6d2..1ac3a45b4 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -141,9 +141,11 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++next; if (next != last) { + bool any_valid_char {false}; if (*next == '(') { ++next; + any_valid_char = true; } // Handle nan(SNAN) @@ -152,6 +154,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ { next += 4; signaling = true; + any_valid_char = true; } // Handle Nan(IND) else if ((last - next) >= 3 && (*next == 'i' || *next == 'I') && (*(next + 1) == 'n' || *(next + 1) == 'N') @@ -159,6 +162,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ { next += 3; sign = true; + any_valid_char = true; } // Arbitrary numerical payload @@ -170,6 +174,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ { ++significand_characters; *significand_buffer_first++ = *next++; + any_valid_char = true; } else { @@ -179,8 +184,9 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ } } - if (next != last && (*next != ')')) + if (next != last && any_valid_char) { + // One past the end if we need to ++next; } From a7f4ff459c154d083193ccd52e0c9b3e6150cac6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 10:06:51 +0100 Subject: [PATCH 574/967] Make all numeric limits specializations only a class --- include/boost/decimal/decimal128_t.hpp | 18 ++++++------ include/boost/decimal/decimal32_t.hpp | 16 ++++++----- include/boost/decimal/decimal64_t.hpp | 18 ++++++------ include/boost/decimal/decimal_fast128_t.hpp | 20 +++++++------ include/boost/decimal/decimal_fast32_t.hpp | 18 ++++++------ include/boost/decimal/decimal_fast64_t.hpp | 17 ++++++----- include/boost/decimal/fwd.hpp | 31 ++++++-------------- modules/decimal.cxx | 32 +++------------------ 8 files changed, 72 insertions(+), 98 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 81aa6e4b2..3ce71f50b 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -2233,17 +2233,15 @@ constexpr auto scalbnd128(decimal128_t num, const int expval) noexcept -> decima namespace std { +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + template<> -#ifdef _MSC_VER class numeric_limits -#else -struct numeric_limits -#endif { - -#ifdef _MSC_VER - public: -#endif +public: static constexpr bool is_specialized = true; static constexpr bool is_signed = true; @@ -2286,6 +2284,10 @@ struct numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal128_t { return {1, boost::decimal::detail::etiny_v}; } }; +#ifdef __clang__ +# pragma clang diagnostic pop +#endif + } //namespace std #include diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 9455b0e81..7219f2ed7 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -2302,17 +2302,15 @@ constexpr auto copysignd32(decimal32_t mag, const decimal32_t sgn) noexcept -> d namespace std { +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + template <> -#ifdef _MSC_VER class numeric_limits -#else -struct numeric_limits -#endif { - -#ifdef _MSC_VER public: -#endif static constexpr bool is_specialized = true; static constexpr bool is_signed = true; @@ -2355,6 +2353,10 @@ struct numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal32_t { return {1, boost::decimal::detail::etiny}; } }; +#ifdef __clang__ +# pragma clang diagnostic pop +#endif + } // Namespace std #include diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index d287234e5..2de3c128a 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -2197,17 +2197,15 @@ constexpr auto copysignd64(decimal64_t mag, const decimal64_t sgn) noexcept -> d namespace std { +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + template <> -#ifdef _MSC_VER class numeric_limits -#else -struct numeric_limits -#endif { - -#ifdef _MSC_VER - public: -#endif +public: static constexpr bool is_specialized = true; static constexpr bool is_signed = true; @@ -2250,6 +2248,10 @@ struct numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal64_t { return {1, boost::decimal::detail::etiny_v}; } }; +#ifdef __clang__ +# pragma clang diagnostic pop +#endif + } // Namespace std #include diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index ecd94ea54..20336b4c5 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1582,17 +1582,15 @@ constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128 namespace std { -template<> -#ifdef _MSC_VER -class numeric_limits -#else -struct numeric_limits +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" #endif -{ -#ifdef _MSC_VER - public: -#endif +template <> +class numeric_limits +{ +public: static constexpr bool is_specialized = true; static constexpr bool is_signed = true; @@ -1635,6 +1633,10 @@ struct numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal_fast128_t { return min(); } }; +#ifdef __clang__ +# pragma clang diagnostic pop +#endif + } // namespace std #include diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 11de1002d..25c7a687b 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1544,17 +1544,15 @@ constexpr auto quantized32f(const decimal_fast32_t lhs, const decimal_fast32_t r namespace std { +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + template <> -#ifdef _MSC_VER class numeric_limits -#else -struct numeric_limits -#endif { - -#ifdef _MSC_VER - public: -#endif +public: static constexpr bool is_specialized = true; static constexpr bool is_signed = true; @@ -1599,6 +1597,10 @@ struct numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal_fast32_t { return min(); } }; +#ifdef __clang__ +# pragma clang diagnostic pop +#endif + } // Namespace std #include diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index a7ba82332..f6b8c851c 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1518,16 +1518,15 @@ constexpr auto copysignd64f(decimal_fast64_t mag, const decimal_fast64_t sgn) no namespace std { +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + template <> -#ifdef _MSC_VER class numeric_limits -#else -struct numeric_limits -#endif { -#ifdef _MSC_VER - public: -#endif +public: static constexpr bool is_specialized = true; static constexpr bool is_signed = true; @@ -1573,6 +1572,10 @@ struct numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal_fast64_t { return min(); } }; +#ifdef __clang__ +# pragma clang diagnostic pop +#endif + } // namespace std #include diff --git a/include/boost/decimal/fwd.hpp b/include/boost/decimal/fwd.hpp index 3a519b1c2..3f7649bba 100644 --- a/include/boost/decimal/fwd.hpp +++ b/include/boost/decimal/fwd.hpp @@ -25,46 +25,31 @@ class decimal_fast128_t; namespace std { +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; -#endif template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; -#endif template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; -#endif template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; -#endif template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; -#endif template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; + +#ifdef __clang__ +# pragma clang diagnostic pop #endif } // Namespace std diff --git a/modules/decimal.cxx b/modules/decimal.cxx index d77f323f2..f6657812a 100644 --- a/modules/decimal.cxx +++ b/modules/decimal.cxx @@ -81,46 +81,22 @@ class decimal_fast128_t; export namespace std { template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; -#endif template <> -#ifdef _MSC_VER -class numeric_limits; -#else -struct numeric_limits; -#endif +class numeric_limits; template <> -#ifdef _MSC_VER -class numeric_limits; -#else -struct numeric_limits; -#endif +class numeric_limits; template <> -#ifdef _MSC_VER -class numeric_limits; -#else -struct numeric_limits; -#endif +class numeric_limits; template <> -#ifdef _MSC_VER -class numeric_limits; -#else -struct numeric_limits; -#endif +class numeric_limits; template <> -#ifdef _MSC_VER class numeric_limits; -#else -struct numeric_limits; -#endif } // Namespace std From f4163922c8523bf81d4fa9775dd5ad4d30c9d52c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 10:28:46 +0100 Subject: [PATCH 575/967] Add testing of ODR violation from numeric limits and charconv --- test/Jamfile | 2 ++ test/limits_link_1.cpp | 26 ++++++++++++++++++++++++++ test/limits_link_2.cpp | 26 ++++++++++++++++++++++++++ test/limits_link_3.cpp | 16 ++++++++++++++++ 4 files changed, 70 insertions(+) create mode 100644 test/limits_link_1.cpp create mode 100644 test/limits_link_2.cpp create mode 100644 test/limits_link_3.cpp diff --git a/test/Jamfile b/test/Jamfile index 591c0cc7b..7cc8df1cc 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -187,6 +187,8 @@ run test_to_string.cpp ; run test_total_ordering.cpp ; run test_zeta.cpp ; +run limits_link_1.cpp limits_link_2.cpp limits_link_3.cpp ; + # Run the examples too run ../examples/adl.cpp ; run ../examples/basic_construction.cpp ; diff --git a/test/limits_link_1.cpp b/test/limits_link_1.cpp new file mode 100644 index 000000000..ccd990a0c --- /dev/null +++ b/test/limits_link_1.cpp @@ -0,0 +1,26 @@ +// Copyright 2023 Peter Dimov +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include + +void test_odr_use( int const* ); + +template void test() +{ + test_odr_use( &boost::decimal::limits::max_chars ); + test_odr_use( &std::numeric_limits::digits10 ); +} + +void f1() +{ + test(); + test(); + test(); + + test(); + test(); + test(); +} diff --git a/test/limits_link_2.cpp b/test/limits_link_2.cpp new file mode 100644 index 000000000..b40dd60b4 --- /dev/null +++ b/test/limits_link_2.cpp @@ -0,0 +1,26 @@ +// Copyright 2023 Peter Dimov +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#include +#include + +void test_odr_use( int const* ); + +template void test() +{ + test_odr_use( &boost::decimal::limits::max_chars ); + test_odr_use( &std::numeric_limits::digits10 ); +} + +void f2() +{ + test(); + test(); + test(); + + test(); + test(); + test(); +} diff --git a/test/limits_link_3.cpp b/test/limits_link_3.cpp new file mode 100644 index 000000000..e2bb12904 --- /dev/null +++ b/test/limits_link_3.cpp @@ -0,0 +1,16 @@ +// Copyright 2023 Peter Dimov +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +void f1(); +void f2(); + +int main() +{ + f1(); + f2(); +} + +void test_odr_use( int const* ) +{ +} From 21e02a9f1f29b5a851e30f2088721e9d1f366e83 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 10:46:17 +0100 Subject: [PATCH 576/967] Add forward decl of numeric limits impl template class --- include/boost/decimal/fwd.hpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/boost/decimal/fwd.hpp b/include/boost/decimal/fwd.hpp index 3f7649bba..8c7f6ca6a 100644 --- a/include/boost/decimal/fwd.hpp +++ b/include/boost/decimal/fwd.hpp @@ -13,6 +13,14 @@ namespace boost { namespace decimal { +namespace detail { + +// Needed to avoid ODR violations with numeric limits in C++14 +template +class numeric_limits_impl; + +} // namespace detail + class decimal32_t; class decimal_fast32_t; class decimal64_t; From 94f73058aa79632fca2d553cb2c1bceb032a2568 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 10:46:53 +0100 Subject: [PATCH 577/967] Re-structure to impl class and add out of line definitions --- include/boost/decimal/decimal32_t.hpp | 64 ++++++++++++++++++++++----- 1 file changed, 53 insertions(+), 11 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 7219f2ed7..ca1f088dd 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -2297,18 +2297,10 @@ constexpr auto copysignd32(decimal32_t mag, const decimal32_t sgn) noexcept -> d return mag; } -} // namespace decimal -} // namespace boost - -namespace std { - -#ifdef __clang__ -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wmismatched-tags" -#endif +namespace detail { template <> -class numeric_limits +class numeric_limits_impl { public: @@ -2338,7 +2330,7 @@ class numeric_limits static constexpr int min_exponent10 = min_exponent; static constexpr int max_exponent = 96; static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; + static constexpr bool traps = std::numeric_limits::traps; static constexpr bool tinyness_before = true; // Member functions @@ -2351,8 +2343,58 @@ class numeric_limits static constexpr auto quiet_NaN () -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_nan_mask); } static constexpr auto signaling_NaN() -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_snan_mask); } static constexpr auto denorm_min () -> boost::decimal::decimal32_t { return {1, boost::decimal::detail::etiny}; } + }; +#if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +constexpr bool numeric_limits_impl::is_specialized; +constexpr bool numeric_limits_impl::is_signed; +constexpr bool numeric_limits_impl::is_integer; +constexpr bool numeric_limits_impl::is_exact; +constexpr bool numeric_limits_impl::has_infinity; +constexpr bool numeric_limits_impl::has_quiet_NaN; +constexpr bool numeric_limits_impl::has_signaling_NaN; + +// These members were deprecated in C++23 +#if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) +constexpr std::float_denorm_style numeric_limits_impl::has_denorm; +constexpr bool numeric_limits_impl::has_denorm_loss; +#endif + +constexpr std::float_round_style numeric_limits_impl::round_style; +constexpr bool numeric_limits_impl::is_iec559; +constexpr bool numeric_limits_impl::is_bounded; +constexpr bool numeric_limits_impl::is_modulo; +constexpr int numeric_limits_impl::digits; +constexpr int numeric_limits_impl::digits10; +constexpr int numeric_limits_impl::max_digits10; +constexpr int numeric_limits_impl::radix; +constexpr int numeric_limits_impl::min_exponent; +constexpr int numeric_limits_impl::min_exponent10; +constexpr int numeric_limits_impl::max_exponent; +constexpr int numeric_limits_impl::max_exponent10; +constexpr bool numeric_limits_impl::traps; +constexpr bool numeric_limits_impl::tinyness_before; + +#endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +} // namespace detail + +} // namespace decimal +} // namespace boost + +namespace std { + +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + +template <> +class numeric_limits : + public boost::decimal::detail::numeric_limits_impl {}; + #ifdef __clang__ # pragma clang diagnostic pop #endif From 70933303928b7d502a66d1244d127c5a6da0d93d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 10:57:53 +0100 Subject: [PATCH 578/967] Broadly use numeric limits impl class --- include/boost/decimal/decimal128_t.hpp | 65 +++++++++++++++++---- include/boost/decimal/decimal64_t.hpp | 63 ++++++++++++++++---- include/boost/decimal/decimal_fast128_t.hpp | 63 ++++++++++++++++---- include/boost/decimal/decimal_fast32_t.hpp | 63 ++++++++++++++++---- include/boost/decimal/decimal_fast64_t.hpp | 63 ++++++++++++++++---- 5 files changed, 261 insertions(+), 56 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 3ce71f50b..d8efb0f24 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -2228,18 +2228,10 @@ constexpr auto scalbnd128(decimal128_t num, const int expval) noexcept -> decima return scalblnd128(num, static_cast(expval)); } -} //namespace decimal -} //namespace boost - -namespace std { - -#ifdef __clang__ -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wmismatched-tags" -#endif +namespace detail { -template<> -class numeric_limits +template <> +class numeric_limits_impl { public: @@ -2269,7 +2261,7 @@ class numeric_limits static constexpr int min_exponent10 = min_exponent; static constexpr int max_exponent = 6144; static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; + static constexpr bool traps = std::numeric_limits::traps; static constexpr bool tinyness_before = true; // Member functions @@ -2284,6 +2276,55 @@ class numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal128_t { return {1, boost::decimal::detail::etiny_v}; } }; +#if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +constexpr bool numeric_limits_impl::is_specialized; +constexpr bool numeric_limits_impl::is_signed; +constexpr bool numeric_limits_impl::is_integer; +constexpr bool numeric_limits_impl::is_exact; +constexpr bool numeric_limits_impl::has_infinity; +constexpr bool numeric_limits_impl::has_quiet_NaN; +constexpr bool numeric_limits_impl::has_signaling_NaN; + +// These members were deprecated in C++23 +#if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) +constexpr std::float_denorm_style numeric_limits_impl::has_denorm; +constexpr bool numeric_limits_impl::has_denorm_loss; +#endif + +constexpr std::float_round_style numeric_limits_impl::round_style; +constexpr bool numeric_limits_impl::is_iec559; +constexpr bool numeric_limits_impl::is_bounded; +constexpr bool numeric_limits_impl::is_modulo; +constexpr int numeric_limits_impl::digits; +constexpr int numeric_limits_impl::digits10; +constexpr int numeric_limits_impl::max_digits10; +constexpr int numeric_limits_impl::radix; +constexpr int numeric_limits_impl::min_exponent; +constexpr int numeric_limits_impl::min_exponent10; +constexpr int numeric_limits_impl::max_exponent; +constexpr int numeric_limits_impl::max_exponent10; +constexpr bool numeric_limits_impl::traps; +constexpr bool numeric_limits_impl::tinyness_before; + +#endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +} // namespace detail + +} //namespace decimal +} //namespace boost + +namespace std { + +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + +template <> +class numeric_limits : + public boost::decimal::detail::numeric_limits_impl {}; + #ifdef __clang__ # pragma clang diagnostic pop #endif diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 2de3c128a..c167ec2f0 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -2192,18 +2192,10 @@ constexpr auto copysignd64(decimal64_t mag, const decimal64_t sgn) noexcept -> d return mag; } -} //namespace decimal -} //namespace boost - -namespace std { - -#ifdef __clang__ -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wmismatched-tags" -#endif +namespace detail { template <> -class numeric_limits +class numeric_limits_impl { public: @@ -2233,7 +2225,7 @@ class numeric_limits static constexpr int min_exponent10 = min_exponent; static constexpr int max_exponent = 384; static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; + static constexpr bool traps = std::numeric_limits::traps; static constexpr bool tinyness_before = true; // Member functions @@ -2248,6 +2240,55 @@ class numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal64_t { return {1, boost::decimal::detail::etiny_v}; } }; +#if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +constexpr bool numeric_limits_impl::is_specialized; +constexpr bool numeric_limits_impl::is_signed; +constexpr bool numeric_limits_impl::is_integer; +constexpr bool numeric_limits_impl::is_exact; +constexpr bool numeric_limits_impl::has_infinity; +constexpr bool numeric_limits_impl::has_quiet_NaN; +constexpr bool numeric_limits_impl::has_signaling_NaN; + +// These members were deprecated in C++23 +#if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) +constexpr std::float_denorm_style numeric_limits_impl::has_denorm; +constexpr bool numeric_limits_impl::has_denorm_loss; +#endif + +constexpr std::float_round_style numeric_limits_impl::round_style; +constexpr bool numeric_limits_impl::is_iec559; +constexpr bool numeric_limits_impl::is_bounded; +constexpr bool numeric_limits_impl::is_modulo; +constexpr int numeric_limits_impl::digits; +constexpr int numeric_limits_impl::digits10; +constexpr int numeric_limits_impl::max_digits10; +constexpr int numeric_limits_impl::radix; +constexpr int numeric_limits_impl::min_exponent; +constexpr int numeric_limits_impl::min_exponent10; +constexpr int numeric_limits_impl::max_exponent; +constexpr int numeric_limits_impl::max_exponent10; +constexpr bool numeric_limits_impl::traps; +constexpr bool numeric_limits_impl::tinyness_before; + +#endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +} // namespace detail + +} //namespace decimal +} //namespace boost + +namespace std { + +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + +template <> +class numeric_limits : + public boost::decimal::detail::numeric_limits_impl {}; + #ifdef __clang__ # pragma clang diagnostic pop #endif diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 20336b4c5..108038435 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1577,18 +1577,10 @@ constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128 return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; } -} // namespace decimal -} // namespace boost - -namespace std { - -#ifdef __clang__ -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wmismatched-tags" -#endif +namespace detail { template <> -class numeric_limits +class numeric_limits_impl { public: @@ -1618,7 +1610,7 @@ class numeric_limits static constexpr int min_exponent10 = min_exponent; static constexpr int max_exponent = 6144; static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; + static constexpr bool traps = std::numeric_limits::traps; static constexpr bool tinyness_before = true; // Member functions @@ -1633,6 +1625,55 @@ class numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal_fast128_t { return min(); } }; +#if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +constexpr bool numeric_limits_impl::is_specialized; +constexpr bool numeric_limits_impl::is_signed; +constexpr bool numeric_limits_impl::is_integer; +constexpr bool numeric_limits_impl::is_exact; +constexpr bool numeric_limits_impl::has_infinity; +constexpr bool numeric_limits_impl::has_quiet_NaN; +constexpr bool numeric_limits_impl::has_signaling_NaN; + +// These members were deprecated in C++23 +#if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) +constexpr std::float_denorm_style numeric_limits_impl::has_denorm; +constexpr bool numeric_limits_impl::has_denorm_loss; +#endif + +constexpr std::float_round_style numeric_limits_impl::round_style; +constexpr bool numeric_limits_impl::is_iec559; +constexpr bool numeric_limits_impl::is_bounded; +constexpr bool numeric_limits_impl::is_modulo; +constexpr int numeric_limits_impl::digits; +constexpr int numeric_limits_impl::digits10; +constexpr int numeric_limits_impl::max_digits10; +constexpr int numeric_limits_impl::radix; +constexpr int numeric_limits_impl::min_exponent; +constexpr int numeric_limits_impl::min_exponent10; +constexpr int numeric_limits_impl::max_exponent; +constexpr int numeric_limits_impl::max_exponent10; +constexpr bool numeric_limits_impl::traps; +constexpr bool numeric_limits_impl::tinyness_before; + +#endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +} // namespace detail + +} // namespace decimal +} // namespace boost + +namespace std { + +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + +template <> +class numeric_limits : + public boost::decimal::detail::numeric_limits_impl {}; + #ifdef __clang__ # pragma clang diagnostic pop #endif diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 25c7a687b..87165fafd 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1539,18 +1539,10 @@ constexpr auto quantized32f(const decimal_fast32_t lhs, const decimal_fast32_t r return {lhs.full_significand(), rhs.biased_exponent(), lhs.isneg()}; } -} // namespace decimal -} // namespace boost - -namespace std { - -#ifdef __clang__ -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wmismatched-tags" -#endif +namespace detail { template <> -class numeric_limits +class numeric_limits_impl { public: @@ -1580,7 +1572,7 @@ class numeric_limits static constexpr int min_exponent10 = min_exponent; static constexpr int max_exponent = 96; static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; + static constexpr bool traps = std::numeric_limits::traps; static constexpr bool tinyness_before = true; // Member functions @@ -1597,6 +1589,55 @@ class numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal_fast32_t { return min(); } }; +#if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +constexpr bool numeric_limits_impl::is_specialized; +constexpr bool numeric_limits_impl::is_signed; +constexpr bool numeric_limits_impl::is_integer; +constexpr bool numeric_limits_impl::is_exact; +constexpr bool numeric_limits_impl::has_infinity; +constexpr bool numeric_limits_impl::has_quiet_NaN; +constexpr bool numeric_limits_impl::has_signaling_NaN; + +// These members were deprecated in C++23 +#if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) +constexpr std::float_denorm_style numeric_limits_impl::has_denorm; +constexpr bool numeric_limits_impl::has_denorm_loss; +#endif + +constexpr std::float_round_style numeric_limits_impl::round_style; +constexpr bool numeric_limits_impl::is_iec559; +constexpr bool numeric_limits_impl::is_bounded; +constexpr bool numeric_limits_impl::is_modulo; +constexpr int numeric_limits_impl::digits; +constexpr int numeric_limits_impl::digits10; +constexpr int numeric_limits_impl::max_digits10; +constexpr int numeric_limits_impl::radix; +constexpr int numeric_limits_impl::min_exponent; +constexpr int numeric_limits_impl::min_exponent10; +constexpr int numeric_limits_impl::max_exponent; +constexpr int numeric_limits_impl::max_exponent10; +constexpr bool numeric_limits_impl::traps; +constexpr bool numeric_limits_impl::tinyness_before; + +#endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +} // namespace detail + +} // namespace decimal +} // namespace boost + +namespace std { + +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + +template <> +class numeric_limits : + public boost::decimal::detail::numeric_limits_impl {}; + #ifdef __clang__ # pragma clang diagnostic pop #endif diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index f6b8c851c..de7cb34bd 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1513,18 +1513,10 @@ constexpr auto copysignd64f(decimal_fast64_t mag, const decimal_fast64_t sgn) no return mag; } -} // namespace decimal -} // namespace boost - -namespace std { - -#ifdef __clang__ -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wmismatched-tags" -#endif +namespace detail { template <> -class numeric_limits +class numeric_limits_impl { public: @@ -1554,7 +1546,7 @@ class numeric_limits static constexpr int min_exponent10 = min_exponent; static constexpr int max_exponent = 384; static constexpr int max_exponent10 = max_exponent; - static constexpr bool traps = numeric_limits::traps; + static constexpr bool traps = std::numeric_limits::traps; static constexpr bool tinyness_before = true; // Member functions @@ -1572,6 +1564,55 @@ class numeric_limits static constexpr auto denorm_min () -> boost::decimal::decimal_fast64_t { return min(); } }; +#if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +constexpr bool numeric_limits_impl::is_specialized; +constexpr bool numeric_limits_impl::is_signed; +constexpr bool numeric_limits_impl::is_integer; +constexpr bool numeric_limits_impl::is_exact; +constexpr bool numeric_limits_impl::has_infinity; +constexpr bool numeric_limits_impl::has_quiet_NaN; +constexpr bool numeric_limits_impl::has_signaling_NaN; + +// These members were deprecated in C++23 +#if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) +constexpr std::float_denorm_style numeric_limits_impl::has_denorm; +constexpr bool numeric_limits_impl::has_denorm_loss; +#endif + +constexpr std::float_round_style numeric_limits_impl::round_style; +constexpr bool numeric_limits_impl::is_iec559; +constexpr bool numeric_limits_impl::is_bounded; +constexpr bool numeric_limits_impl::is_modulo; +constexpr int numeric_limits_impl::digits; +constexpr int numeric_limits_impl::digits10; +constexpr int numeric_limits_impl::max_digits10; +constexpr int numeric_limits_impl::radix; +constexpr int numeric_limits_impl::min_exponent; +constexpr int numeric_limits_impl::min_exponent10; +constexpr int numeric_limits_impl::max_exponent; +constexpr int numeric_limits_impl::max_exponent10; +constexpr bool numeric_limits_impl::traps; +constexpr bool numeric_limits_impl::tinyness_before; + +#endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L + +} // namespace detail + +} // namespace decimal +} // namespace boost + +namespace std { + +#ifdef __clang__ +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wmismatched-tags" +#endif + +template <> +class numeric_limits : + public boost::decimal::detail::numeric_limits_impl {}; + #ifdef __clang__ # pragma clang diagnostic pop #endif From c591ec54812b372001bc781c5ea87702ab721ddc Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 11:10:03 +0100 Subject: [PATCH 579/967] Add bool template param --- include/boost/decimal/decimal128_t.hpp | 52 ++++++++++----------- include/boost/decimal/decimal32_t.hpp | 52 ++++++++++----------- include/boost/decimal/decimal64_t.hpp | 52 ++++++++++----------- include/boost/decimal/decimal_fast128_t.hpp | 52 ++++++++++----------- include/boost/decimal/decimal_fast32_t.hpp | 52 ++++++++++----------- include/boost/decimal/decimal_fast64_t.hpp | 52 ++++++++++----------- include/boost/decimal/fwd.hpp | 8 ---- 7 files changed, 156 insertions(+), 164 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index d8efb0f24..5568a71a0 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -2230,8 +2230,8 @@ constexpr auto scalbnd128(decimal128_t num, const int expval) noexcept -> decima namespace detail { -template <> -class numeric_limits_impl +template +class numeric_limits_impl128 { public: @@ -2278,34 +2278,34 @@ class numeric_limits_impl #if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L -constexpr bool numeric_limits_impl::is_specialized; -constexpr bool numeric_limits_impl::is_signed; -constexpr bool numeric_limits_impl::is_integer; -constexpr bool numeric_limits_impl::is_exact; -constexpr bool numeric_limits_impl::has_infinity; -constexpr bool numeric_limits_impl::has_quiet_NaN; -constexpr bool numeric_limits_impl::has_signaling_NaN; +template constexpr bool numeric_limits_impl128::is_specialized; +template constexpr bool numeric_limits_impl128::is_signed; +template constexpr bool numeric_limits_impl128::is_integer; +template constexpr bool numeric_limits_impl128::is_exact; +template constexpr bool numeric_limits_impl128::has_infinity; +template constexpr bool numeric_limits_impl128::has_quiet_NaN; +template constexpr bool numeric_limits_impl128::has_signaling_NaN; // These members were deprecated in C++23 #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) -constexpr std::float_denorm_style numeric_limits_impl::has_denorm; -constexpr bool numeric_limits_impl::has_denorm_loss; +template constexpr std::float_denorm_style numeric_limits_impl128::has_denorm; +template constexpr bool numeric_limits_impl128::has_denorm_loss; #endif -constexpr std::float_round_style numeric_limits_impl::round_style; -constexpr bool numeric_limits_impl::is_iec559; -constexpr bool numeric_limits_impl::is_bounded; -constexpr bool numeric_limits_impl::is_modulo; -constexpr int numeric_limits_impl::digits; -constexpr int numeric_limits_impl::digits10; -constexpr int numeric_limits_impl::max_digits10; -constexpr int numeric_limits_impl::radix; -constexpr int numeric_limits_impl::min_exponent; -constexpr int numeric_limits_impl::min_exponent10; -constexpr int numeric_limits_impl::max_exponent; -constexpr int numeric_limits_impl::max_exponent10; -constexpr bool numeric_limits_impl::traps; -constexpr bool numeric_limits_impl::tinyness_before; +template constexpr std::float_round_style numeric_limits_impl128::round_style; +template constexpr bool numeric_limits_impl128::is_iec559; +template constexpr bool numeric_limits_impl128::is_bounded; +template constexpr bool numeric_limits_impl128::is_modulo; +template constexpr int numeric_limits_impl128::digits; +template constexpr int numeric_limits_impl128::digits10; +template constexpr int numeric_limits_impl128::max_digits10; +template constexpr int numeric_limits_impl128::radix; +template constexpr int numeric_limits_impl128::min_exponent; +template constexpr int numeric_limits_impl128::min_exponent10; +template constexpr int numeric_limits_impl128::max_exponent; +template constexpr int numeric_limits_impl128::max_exponent10; +template constexpr bool numeric_limits_impl128::traps; +template constexpr bool numeric_limits_impl128::tinyness_before; #endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L @@ -2323,7 +2323,7 @@ namespace std { template <> class numeric_limits : - public boost::decimal::detail::numeric_limits_impl {}; + public boost::decimal::detail::numeric_limits_impl128 {}; #ifdef __clang__ # pragma clang diagnostic pop diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index ca1f088dd..4ad62bf46 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -2299,8 +2299,8 @@ constexpr auto copysignd32(decimal32_t mag, const decimal32_t sgn) noexcept -> d namespace detail { -template <> -class numeric_limits_impl +template +class numeric_limits_impl32 { public: @@ -2348,34 +2348,34 @@ class numeric_limits_impl #if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L -constexpr bool numeric_limits_impl::is_specialized; -constexpr bool numeric_limits_impl::is_signed; -constexpr bool numeric_limits_impl::is_integer; -constexpr bool numeric_limits_impl::is_exact; -constexpr bool numeric_limits_impl::has_infinity; -constexpr bool numeric_limits_impl::has_quiet_NaN; -constexpr bool numeric_limits_impl::has_signaling_NaN; +template constexpr bool numeric_limits_impl32::is_specialized; +template constexpr bool numeric_limits_impl32::is_signed; +template constexpr bool numeric_limits_impl32::is_integer; +template constexpr bool numeric_limits_impl32::is_exact; +template constexpr bool numeric_limits_impl32::has_infinity; +template constexpr bool numeric_limits_impl32::has_quiet_NaN; +template constexpr bool numeric_limits_impl32::has_signaling_NaN; // These members were deprecated in C++23 #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) -constexpr std::float_denorm_style numeric_limits_impl::has_denorm; -constexpr bool numeric_limits_impl::has_denorm_loss; +template constexpr std::float_denorm_style numeric_limits_impl32::has_denorm; +template constexpr bool numeric_limits_impl32::has_denorm_loss; #endif -constexpr std::float_round_style numeric_limits_impl::round_style; -constexpr bool numeric_limits_impl::is_iec559; -constexpr bool numeric_limits_impl::is_bounded; -constexpr bool numeric_limits_impl::is_modulo; -constexpr int numeric_limits_impl::digits; -constexpr int numeric_limits_impl::digits10; -constexpr int numeric_limits_impl::max_digits10; -constexpr int numeric_limits_impl::radix; -constexpr int numeric_limits_impl::min_exponent; -constexpr int numeric_limits_impl::min_exponent10; -constexpr int numeric_limits_impl::max_exponent; -constexpr int numeric_limits_impl::max_exponent10; -constexpr bool numeric_limits_impl::traps; -constexpr bool numeric_limits_impl::tinyness_before; +template constexpr std::float_round_style numeric_limits_impl32::round_style; +template constexpr bool numeric_limits_impl32::is_iec559; +template constexpr bool numeric_limits_impl32::is_bounded; +template constexpr bool numeric_limits_impl32::is_modulo; +template constexpr int numeric_limits_impl32::digits; +template constexpr int numeric_limits_impl32::digits10; +template constexpr int numeric_limits_impl32::max_digits10; +template constexpr int numeric_limits_impl32::radix; +template constexpr int numeric_limits_impl32::min_exponent; +template constexpr int numeric_limits_impl32::min_exponent10; +template constexpr int numeric_limits_impl32::max_exponent; +template constexpr int numeric_limits_impl32::max_exponent10; +template constexpr bool numeric_limits_impl32::traps; +template constexpr bool numeric_limits_impl32::tinyness_before; #endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L @@ -2393,7 +2393,7 @@ namespace std { template <> class numeric_limits : - public boost::decimal::detail::numeric_limits_impl {}; + public boost::decimal::detail::numeric_limits_impl32 {}; #ifdef __clang__ # pragma clang diagnostic pop diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index c167ec2f0..f456cfa07 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -2194,8 +2194,8 @@ constexpr auto copysignd64(decimal64_t mag, const decimal64_t sgn) noexcept -> d namespace detail { -template <> -class numeric_limits_impl +template +class numeric_limits_impl64 { public: @@ -2242,34 +2242,34 @@ class numeric_limits_impl #if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L -constexpr bool numeric_limits_impl::is_specialized; -constexpr bool numeric_limits_impl::is_signed; -constexpr bool numeric_limits_impl::is_integer; -constexpr bool numeric_limits_impl::is_exact; -constexpr bool numeric_limits_impl::has_infinity; -constexpr bool numeric_limits_impl::has_quiet_NaN; -constexpr bool numeric_limits_impl::has_signaling_NaN; +template constexpr bool numeric_limits_impl64::is_specialized; +template constexpr bool numeric_limits_impl64::is_signed; +template constexpr bool numeric_limits_impl64::is_integer; +template constexpr bool numeric_limits_impl64::is_exact; +template constexpr bool numeric_limits_impl64::has_infinity; +template constexpr bool numeric_limits_impl64::has_quiet_NaN; +template constexpr bool numeric_limits_impl64::has_signaling_NaN; // These members were deprecated in C++23 #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) -constexpr std::float_denorm_style numeric_limits_impl::has_denorm; -constexpr bool numeric_limits_impl::has_denorm_loss; +template constexpr std::float_denorm_style numeric_limits_impl64::has_denorm; +template constexpr bool numeric_limits_impl64::has_denorm_loss; #endif -constexpr std::float_round_style numeric_limits_impl::round_style; -constexpr bool numeric_limits_impl::is_iec559; -constexpr bool numeric_limits_impl::is_bounded; -constexpr bool numeric_limits_impl::is_modulo; -constexpr int numeric_limits_impl::digits; -constexpr int numeric_limits_impl::digits10; -constexpr int numeric_limits_impl::max_digits10; -constexpr int numeric_limits_impl::radix; -constexpr int numeric_limits_impl::min_exponent; -constexpr int numeric_limits_impl::min_exponent10; -constexpr int numeric_limits_impl::max_exponent; -constexpr int numeric_limits_impl::max_exponent10; -constexpr bool numeric_limits_impl::traps; -constexpr bool numeric_limits_impl::tinyness_before; +template constexpr std::float_round_style numeric_limits_impl64::round_style; +template constexpr bool numeric_limits_impl64::is_iec559; +template constexpr bool numeric_limits_impl64::is_bounded; +template constexpr bool numeric_limits_impl64::is_modulo; +template constexpr int numeric_limits_impl64::digits; +template constexpr int numeric_limits_impl64::digits10; +template constexpr int numeric_limits_impl64::max_digits10; +template constexpr int numeric_limits_impl64::radix; +template constexpr int numeric_limits_impl64::min_exponent; +template constexpr int numeric_limits_impl64::min_exponent10; +template constexpr int numeric_limits_impl64::max_exponent; +template constexpr int numeric_limits_impl64::max_exponent10; +template constexpr bool numeric_limits_impl64::traps; +template constexpr bool numeric_limits_impl64::tinyness_before; #endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L @@ -2287,7 +2287,7 @@ namespace std { template <> class numeric_limits : - public boost::decimal::detail::numeric_limits_impl {}; + public boost::decimal::detail::numeric_limits_impl64 {}; #ifdef __clang__ # pragma clang diagnostic pop diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 108038435..c7470c3c9 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -1579,8 +1579,8 @@ constexpr auto quantized128f(const decimal_fast128_t& lhs, const decimal_fast128 namespace detail { -template <> -class numeric_limits_impl +template +class numeric_limits_impl128f { public: @@ -1627,34 +1627,34 @@ class numeric_limits_impl #if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L -constexpr bool numeric_limits_impl::is_specialized; -constexpr bool numeric_limits_impl::is_signed; -constexpr bool numeric_limits_impl::is_integer; -constexpr bool numeric_limits_impl::is_exact; -constexpr bool numeric_limits_impl::has_infinity; -constexpr bool numeric_limits_impl::has_quiet_NaN; -constexpr bool numeric_limits_impl::has_signaling_NaN; +template constexpr bool numeric_limits_impl128f::is_specialized; +template constexpr bool numeric_limits_impl128f::is_signed; +template constexpr bool numeric_limits_impl128f::is_integer; +template constexpr bool numeric_limits_impl128f::is_exact; +template constexpr bool numeric_limits_impl128f::has_infinity; +template constexpr bool numeric_limits_impl128f::has_quiet_NaN; +template constexpr bool numeric_limits_impl128f::has_signaling_NaN; // These members were deprecated in C++23 #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) -constexpr std::float_denorm_style numeric_limits_impl::has_denorm; -constexpr bool numeric_limits_impl::has_denorm_loss; +template constexpr std::float_denorm_style numeric_limits_impl128f::has_denorm; +template constexpr bool numeric_limits_impl128f::has_denorm_loss; #endif -constexpr std::float_round_style numeric_limits_impl::round_style; -constexpr bool numeric_limits_impl::is_iec559; -constexpr bool numeric_limits_impl::is_bounded; -constexpr bool numeric_limits_impl::is_modulo; -constexpr int numeric_limits_impl::digits; -constexpr int numeric_limits_impl::digits10; -constexpr int numeric_limits_impl::max_digits10; -constexpr int numeric_limits_impl::radix; -constexpr int numeric_limits_impl::min_exponent; -constexpr int numeric_limits_impl::min_exponent10; -constexpr int numeric_limits_impl::max_exponent; -constexpr int numeric_limits_impl::max_exponent10; -constexpr bool numeric_limits_impl::traps; -constexpr bool numeric_limits_impl::tinyness_before; +template constexpr std::float_round_style numeric_limits_impl128f::round_style; +template constexpr bool numeric_limits_impl128f::is_iec559; +template constexpr bool numeric_limits_impl128f::is_bounded; +template constexpr bool numeric_limits_impl128f::is_modulo; +template constexpr int numeric_limits_impl128f::digits; +template constexpr int numeric_limits_impl128f::digits10; +template constexpr int numeric_limits_impl128f::max_digits10; +template constexpr int numeric_limits_impl128f::radix; +template constexpr int numeric_limits_impl128f::min_exponent; +template constexpr int numeric_limits_impl128f::min_exponent10; +template constexpr int numeric_limits_impl128f::max_exponent; +template constexpr int numeric_limits_impl128f::max_exponent10; +template constexpr bool numeric_limits_impl128f::traps; +template constexpr bool numeric_limits_impl128f::tinyness_before; #endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L @@ -1672,7 +1672,7 @@ namespace std { template <> class numeric_limits : - public boost::decimal::detail::numeric_limits_impl {}; + public boost::decimal::detail::numeric_limits_impl128f {}; #ifdef __clang__ # pragma clang diagnostic pop diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 87165fafd..b618c8774 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1541,8 +1541,8 @@ constexpr auto quantized32f(const decimal_fast32_t lhs, const decimal_fast32_t r namespace detail { -template <> -class numeric_limits_impl +template +class numeric_limits_impl32f { public: @@ -1591,34 +1591,34 @@ class numeric_limits_impl #if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L -constexpr bool numeric_limits_impl::is_specialized; -constexpr bool numeric_limits_impl::is_signed; -constexpr bool numeric_limits_impl::is_integer; -constexpr bool numeric_limits_impl::is_exact; -constexpr bool numeric_limits_impl::has_infinity; -constexpr bool numeric_limits_impl::has_quiet_NaN; -constexpr bool numeric_limits_impl::has_signaling_NaN; +template constexpr bool numeric_limits_impl32f::is_specialized; +template constexpr bool numeric_limits_impl32f::is_signed; +template constexpr bool numeric_limits_impl32f::is_integer; +template constexpr bool numeric_limits_impl32f::is_exact; +template constexpr bool numeric_limits_impl32f::has_infinity; +template constexpr bool numeric_limits_impl32f::has_quiet_NaN; +template constexpr bool numeric_limits_impl32f::has_signaling_NaN; // These members were deprecated in C++23 #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) -constexpr std::float_denorm_style numeric_limits_impl::has_denorm; -constexpr bool numeric_limits_impl::has_denorm_loss; +template constexpr std::float_denorm_style numeric_limits_impl32f::has_denorm; +template constexpr bool numeric_limits_impl32f::has_denorm_loss; #endif -constexpr std::float_round_style numeric_limits_impl::round_style; -constexpr bool numeric_limits_impl::is_iec559; -constexpr bool numeric_limits_impl::is_bounded; -constexpr bool numeric_limits_impl::is_modulo; -constexpr int numeric_limits_impl::digits; -constexpr int numeric_limits_impl::digits10; -constexpr int numeric_limits_impl::max_digits10; -constexpr int numeric_limits_impl::radix; -constexpr int numeric_limits_impl::min_exponent; -constexpr int numeric_limits_impl::min_exponent10; -constexpr int numeric_limits_impl::max_exponent; -constexpr int numeric_limits_impl::max_exponent10; -constexpr bool numeric_limits_impl::traps; -constexpr bool numeric_limits_impl::tinyness_before; +template constexpr std::float_round_style numeric_limits_impl32f::round_style; +template constexpr bool numeric_limits_impl32f::is_iec559; +template constexpr bool numeric_limits_impl32f::is_bounded; +template constexpr bool numeric_limits_impl32f::is_modulo; +template constexpr int numeric_limits_impl32f::digits; +template constexpr int numeric_limits_impl32f::digits10; +template constexpr int numeric_limits_impl32f::max_digits10; +template constexpr int numeric_limits_impl32f::radix; +template constexpr int numeric_limits_impl32f::min_exponent; +template constexpr int numeric_limits_impl32f::min_exponent10; +template constexpr int numeric_limits_impl32f::max_exponent; +template constexpr int numeric_limits_impl32f::max_exponent10; +template constexpr bool numeric_limits_impl32f::traps; +template constexpr bool numeric_limits_impl32f::tinyness_before; #endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L @@ -1636,7 +1636,7 @@ namespace std { template <> class numeric_limits : - public boost::decimal::detail::numeric_limits_impl {}; + public boost::decimal::detail::numeric_limits_impl32f {}; #ifdef __clang__ # pragma clang diagnostic pop diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index de7cb34bd..7931e7c2e 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1515,8 +1515,8 @@ constexpr auto copysignd64f(decimal_fast64_t mag, const decimal_fast64_t sgn) no namespace detail { -template <> -class numeric_limits_impl +template +class numeric_limits_impl64f { public: @@ -1566,34 +1566,34 @@ class numeric_limits_impl #if !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L -constexpr bool numeric_limits_impl::is_specialized; -constexpr bool numeric_limits_impl::is_signed; -constexpr bool numeric_limits_impl::is_integer; -constexpr bool numeric_limits_impl::is_exact; -constexpr bool numeric_limits_impl::has_infinity; -constexpr bool numeric_limits_impl::has_quiet_NaN; -constexpr bool numeric_limits_impl::has_signaling_NaN; +template constexpr bool numeric_limits_impl64f::is_specialized; +template constexpr bool numeric_limits_impl64f::is_signed; +template constexpr bool numeric_limits_impl64f::is_integer; +template constexpr bool numeric_limits_impl64f::is_exact; +template constexpr bool numeric_limits_impl64f::has_infinity; +template constexpr bool numeric_limits_impl64f::has_quiet_NaN; +template constexpr bool numeric_limits_impl64f::has_signaling_NaN; // These members were deprecated in C++23 #if ((!defined(_MSC_VER) && (__cplusplus <= 202002L)) || (defined(_MSC_VER) && (_MSVC_LANG <= 202002L))) -constexpr std::float_denorm_style numeric_limits_impl::has_denorm; -constexpr bool numeric_limits_impl::has_denorm_loss; +template constexpr std::float_denorm_style numeric_limits_impl64f::has_denorm; +template constexpr bool numeric_limits_impl64f::has_denorm_loss; #endif -constexpr std::float_round_style numeric_limits_impl::round_style; -constexpr bool numeric_limits_impl::is_iec559; -constexpr bool numeric_limits_impl::is_bounded; -constexpr bool numeric_limits_impl::is_modulo; -constexpr int numeric_limits_impl::digits; -constexpr int numeric_limits_impl::digits10; -constexpr int numeric_limits_impl::max_digits10; -constexpr int numeric_limits_impl::radix; -constexpr int numeric_limits_impl::min_exponent; -constexpr int numeric_limits_impl::min_exponent10; -constexpr int numeric_limits_impl::max_exponent; -constexpr int numeric_limits_impl::max_exponent10; -constexpr bool numeric_limits_impl::traps; -constexpr bool numeric_limits_impl::tinyness_before; +template constexpr std::float_round_style numeric_limits_impl64f::round_style; +template constexpr bool numeric_limits_impl64f::is_iec559; +template constexpr bool numeric_limits_impl64f::is_bounded; +template constexpr bool numeric_limits_impl64f::is_modulo; +template constexpr int numeric_limits_impl64f::digits; +template constexpr int numeric_limits_impl64f::digits10; +template constexpr int numeric_limits_impl64f::max_digits10; +template constexpr int numeric_limits_impl64f::radix; +template constexpr int numeric_limits_impl64f::min_exponent; +template constexpr int numeric_limits_impl64f::min_exponent10; +template constexpr int numeric_limits_impl64f::max_exponent; +template constexpr int numeric_limits_impl64f::max_exponent10; +template constexpr bool numeric_limits_impl64f::traps; +template constexpr bool numeric_limits_impl64f::tinyness_before; #endif // !defined(__cpp_inline_variables) || __cpp_inline_variables < 201606L @@ -1611,7 +1611,7 @@ namespace std { template <> class numeric_limits : - public boost::decimal::detail::numeric_limits_impl {}; + public boost::decimal::detail::numeric_limits_impl64f {}; #ifdef __clang__ # pragma clang diagnostic pop diff --git a/include/boost/decimal/fwd.hpp b/include/boost/decimal/fwd.hpp index 8c7f6ca6a..3f7649bba 100644 --- a/include/boost/decimal/fwd.hpp +++ b/include/boost/decimal/fwd.hpp @@ -13,14 +13,6 @@ namespace boost { namespace decimal { -namespace detail { - -// Needed to avoid ODR violations with numeric limits in C++14 -template -class numeric_limits_impl; - -} // namespace detail - class decimal32_t; class decimal_fast32_t; class decimal64_t; From 57d60614128239e3a4aca58efad36fea53aa8af3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 11:30:30 +0100 Subject: [PATCH 580/967] Add additional test and fix grammar --- test/github_issue_1054.cpp | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/test/github_issue_1054.cpp b/test/github_issue_1054.cpp index 43714d68f..b16222a88 100644 --- a/test/github_issue_1054.cpp +++ b/test/github_issue_1054.cpp @@ -77,7 +77,7 @@ void endptr_using_strtod(const std::string& str) template void check_endptr() { - // endptr should points to the character after "inf" + // endptr should point to the character after "inf" endptr_using_from_chars("info"); endptr_using_strtod("info"); @@ -85,22 +85,26 @@ void check_endptr() endptr_using_from_chars("inch"); endptr_using_strtod("inch"); - // endptr should points to the character after "nan" + // endptr should point to the character after "nan" endptr_using_from_chars("nano"); endptr_using_strtod("nano"); - // endptr should points to the beginning of the string + // endptr should point to the beginning of the string endptr_using_from_chars("name"); endptr_using_strtod("name"); #ifdef __APPLE__ // Darwin's strtod works incorrectly for nan with payload, so skip the test. #else - // endptr should points to the character after "nan(PAYLOAD)" + // endptr should point to the character after "nan(PAYLOAD)" endptr_using_from_chars("nan(PAYLOAD)"); endptr_using_strtod("nan(PAYLOAD)"); - // endptr should points to the character after "nan" + // endptr should point to the character after "nan(123)" + endptr_using_from_chars("nan(123)"); + endptr_using_strtod("nan(123)"); + + // endptr should point to the character after "nan" endptr_using_from_chars("nan(..BAD..)"); endptr_using_strtod("nan(..BAD..)"); #endif From 5145c7ff09bc6a012ae56d0df59d0b7361e106a2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 11:30:43 +0100 Subject: [PATCH 581/967] Add parsing of junk payload in proper format --- include/boost/decimal/detail/parser.hpp | 31 ++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/parser.hpp b/include/boost/decimal/detail/parser.hpp index 1ac3a45b4..e383044ad 100644 --- a/include/boost/decimal/detail/parser.hpp +++ b/include/boost/decimal/detail/parser.hpp @@ -141,11 +141,14 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++next; if (next != last) { + const auto current_pos {next}; + bool any_valid_char {false}; + bool has_opening_brace {false}; if (*next == '(') { ++next; - any_valid_char = true; + has_opening_brace = true; } // Handle nan(SNAN) @@ -166,6 +169,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ } // Arbitrary numerical payload + bool has_numerical_payload {false}; auto significand_buffer_first {significand_buffer}; std::size_t significand_characters {}; while (next != last && (*next != ')')) @@ -175,6 +179,7 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ ++significand_characters; *significand_buffer_first++ = *next++; any_valid_char = true; + has_numerical_payload = true; } else { @@ -184,6 +189,24 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ } } + // Non-numerical payload still needs to be parsed + // e.g. nan(PAYLOAD) + if (!has_numerical_payload && has_opening_brace) + { + while (next != last && (*next != ')')) + { + if (is_payload_char(*next)) + { + any_valid_char = true; + ++next; + } + else + { + break; + } + } + } + if (next != last && any_valid_char) { // One past the end if we need to @@ -195,6 +218,12 @@ constexpr auto parser(const char* first, const char* last, bool& sign, Unsigned_ from_chars_dispatch(significand_buffer, significand_buffer + significand_characters, significand, 10); } + if (!any_valid_char) + { + // If we have nan(..BAD..) we should point to ( + next = current_pos; + } + exponent = static_cast(signaling); return {next, std::errc::not_supported}; } From cd842a40c7175d1c20171a492f880c78b8393ab0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 12:46:11 +0100 Subject: [PATCH 582/967] Add trivial testing harness --- examples/test.hpp | 62 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 examples/test.hpp diff --git a/examples/test.hpp b/examples/test.hpp new file mode 100644 index 000000000..0d8686753 --- /dev/null +++ b/examples/test.hpp @@ -0,0 +1,62 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// Some trivial testing facilities so that the library examples can run without boost +// Running the full test suite in the test/ directory does require boost + +#ifndef BOOST_DECIMAL_EXAMPLES_TEST_HPP +#define BOOST_DECIMAL_EXAMPLES_TEST_HPP + +#include +#include +#include + +namespace boost { +namespace decimal { +namespace test { + +static int errors = 0; + +inline int report_errors() +{ + // Limited on the upper bound of main return on some platforms + return errors > 255 ? 255 : errors; +} + +inline void test(const bool x) +{ + if (!x) + { + ++errors; + std::cerr << "Test Failed at line: " << __LINE__ << std::endl; + } +} + +template ::value, bool> = true> +void test_eq(const T lhs, const T rhs) +{ + if (lhs != rhs) + { + ++errors; + std::cerr << "Failed equality test for: " << lhs << " and " << rhs << " at line: " << __LINE__ << std::endl; + } +} + +template ::value, bool> = true> +void test_eq(const T a, const T b) +{ + // Knuth's approximate float equality from The Art of Computer Programming + // See also: https://stackoverflow.com/questions/17333/how-do-you-compare-float-and-double-while-accounting-for-precision-loss + using std::fabs; + test(fabs(a - b) <= ((fabs(a) < fabs(b) ? fabs(b) : fabs(a)) * std::numeric_limits::epsilon())); +} + +} // namespace test +} // namespace decimal +} // namespace boost + +#define BOOST_DECIMAL_TEST(x) boost::decimal::test::test(x); +#define BOOST_DECIMAL_TEST_EQ(lhs, rhs) boost::decimal::test::test_eq(lhs, rhs) + +#endif // BOOST_DECIMAL_EXAMPLES_TEST_HPP From 428b4eac6b6e6b96a9ec178274e2a041eb7a5a24 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 12:50:50 +0100 Subject: [PATCH 583/967] Improve the ADL example --- examples/adl.cpp | 46 ++++++++++++++++++++++------------------------ 1 file changed, 22 insertions(+), 24 deletions(-) diff --git a/examples/adl.cpp b/examples/adl.cpp index 1ad40a0c6..ade797c0b 100644 --- a/examples/adl.cpp +++ b/examples/adl.cpp @@ -1,41 +1,39 @@ // Copyright 2024 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// +// This example shows how we are able to use adl with Boost.Decimal to allow a template function +// to use both built-in binary floating point types, as well as Boost.Decimal types +#include "test.hpp" #include -#include #include -int error_counter = 0; - template -bool float_equal(T lhs, T rhs) +void sin_identity(T val) { - using std::fabs; - return fabs(lhs - rhs) < std::numeric_limits::epsilon(); // numeric_limits is overloaded for all decimal types -} + // ADL allows builtin and decimal types to both be used + using std::sin; + using boost::decimal::sin; -template -void test(T val) -{ - using std::sin; // ADL allows builtin and decimal types to both be used - if (!float_equal(sin(val), -sin(-val))) // sin(x) == -sin(-x) - { - ++error_counter; - } + // sin(x) = -sin(-x) + BOOST_DECIMAL_TEST_EQ(sin(val), -sin(-val)); } int main() { - test(-0.5F); - test(-0.5); - test(-0.5L); - - test(boost::decimal::decimal32_t{-5, -1}); - test(boost::decimal::decimal64_t{-5, -1}); - test(boost::decimal::decimal128_t{-5, -1}); - - return error_counter; + // Because of the two using statements in the above function we can now call it with built-in floating point, + // or our decimal types as show below + + sin_identity(-0.5F); + sin_identity(-0.5); + sin_identity(-0.5L); + + sin_identity(boost::decimal::decimal32_t{"-0.5"}); + sin_identity(boost::decimal::decimal64_t{"-0.5"}); + sin_identity(boost::decimal::decimal128_t{"-0.5"}); + + return boost::decimal::test::report_errors(); } From c83425d7c79d0db2b9d06e4f5bf910d6840e4a3a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 12:58:25 +0100 Subject: [PATCH 584/967] Remove using namespace and add granularity to the headers --- examples/bit_conversions.cpp | 20 +++++++++++++++----- examples/test.hpp | 1 + 2 files changed, 16 insertions(+), 5 deletions(-) diff --git a/examples/bit_conversions.cpp b/examples/bit_conversions.cpp index 86a15863f..00cb0f2bd 100644 --- a/examples/bit_conversions.cpp +++ b/examples/bit_conversions.cpp @@ -2,14 +2,22 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#include +#include "test.hpp" +#include +#include +#include +#include #include -#include - -using namespace boost::decimal; int main() { + using boost::decimal::decimal32_t; + using boost::decimal::decimal_fast32_t; + using boost::decimal::from_bid; + using boost::decimal::from_dpd; + using boost::decimal::to_bid; + using boost::decimal::to_dpd; + const decimal_fast32_t fast_type {5}; const std::uint32_t BID_bits {to_bid(fast_type)}; const std::uint32_t DPD_bits {to_dpd(fast_type)}; @@ -21,5 +29,7 @@ int main() const decimal32_t bid_decimal {from_bid(BID_bits)}; const decimal32_t dpd_decimal {from_dpd(DPD_bits)}; - return !(bid_decimal == dpd_decimal); + BOOST_DECIMAL_TEST_NE(bid_decimal, dpd_decimal); + + return boost::decimal::test::report_errors(); } diff --git a/examples/test.hpp b/examples/test.hpp index 0d8686753..5a6b28ed7 100644 --- a/examples/test.hpp +++ b/examples/test.hpp @@ -8,6 +8,7 @@ #ifndef BOOST_DECIMAL_EXAMPLES_TEST_HPP #define BOOST_DECIMAL_EXAMPLES_TEST_HPP +#include #include #include #include From 19a778e3f90c2583aa5ee21715af757caa1656d9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 12:59:52 +0100 Subject: [PATCH 585/967] Move bit conversions example --- doc/modules/ROOT/pages/conversions.adoc | 31 ++++++++++++++++++++++++ doc/modules/ROOT/pages/examples.adoc | 32 ------------------------- 2 files changed, 31 insertions(+), 32 deletions(-) diff --git a/doc/modules/ROOT/pages/conversions.adoc b/doc/modules/ROOT/pages/conversions.adoc index c81512fe3..97e2d15b1 100644 --- a/doc/modules/ROOT/pages/conversions.adoc +++ b/doc/modules/ROOT/pages/conversions.adoc @@ -114,3 +114,34 @@ constexpr T from_dpd(unsigned __int128 bits) noexcept; } // namespace decimal } // namespace boost ---- + +== Bit Conversions Example +[source, c++] +---- +#include +#include +#include + +using namespace boost::decimal; + +int main() +{ + const decimal_fast32_t fast_type {5}; + const std::uint32_t BID_bits {to_bid(fast_type)}; + const std::uint32_t DPD_bits {to_dpd(fast_type)}; + + std::cout << std::hex + << "BID format: " << BID_bits << '\n' + << "DPD format: " << DPD_bits << std::endl; + + const decimal32_t bid_decimal {from_bid(BID_bits)}; + const decimal32_t dpd_decimal {from_dpd(DPD_bits)}; + + return !(bid_decimal == dpd_decimal); +} +---- +Output: +---- +BID format: 31fc4b40 +DPD format: 35f00000 +---- diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index e617ae805..3e3bd8b0a 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -173,38 +173,6 @@ int main() } ---- -[#examples_bit_conversions] -== Bit Conversions -[source, c++] ----- -#include -#include -#include - -using namespace boost::decimal; - -int main() -{ - const decimal_fast32_t fast_type {5}; - const std::uint32_t BID_bits {to_bid(fast_type)}; - const std::uint32_t DPD_bits {to_dpd(fast_type)}; - - std::cout << std::hex - << "BID format: " << BID_bits << '\n' - << "DPD format: " << DPD_bits << std::endl; - - const decimal32_t bid_decimal {from_bid(BID_bits)}; - const decimal32_t dpd_decimal {from_dpd(DPD_bits)}; - - return !(bid_decimal == dpd_decimal); -} ----- -Output: ----- -BID format: 31fc4b40 -DPD format: 35f00000 ----- - [#examples_finance] == Financial Applications From 7699aabe1f6d3a61843a9df7ab8fe6ae53af1b26 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 13:02:24 +0100 Subject: [PATCH 586/967] Fixes for new example and add hyperlink to actual file --- doc/modules/ROOT/nav.adoc | 1 - doc/modules/ROOT/pages/conversions.adoc | 23 ++++++++++++++++++----- 2 files changed, 18 insertions(+), 6 deletions(-) diff --git a/doc/modules/ROOT/nav.adoc b/doc/modules/ROOT/nav.adoc index daf782869..a1dfdec64 100644 --- a/doc/modules/ROOT/nav.adoc +++ b/doc/modules/ROOT/nav.adoc @@ -6,7 +6,6 @@ ** xref:examples.adoc#examples_charconv[``] ** xref:examples.adoc#examples_generic_programming[Generic Programming] ** xref:examples.adoc#examples_literals_constants[Literals and Constants] -** xref:examples.adoc#examples_bit_conversions[Bit Conversions] ** xref:examples.adoc#examples_finance[Financial Applications] ** xref:examples.adoc#examples_boost_math[Boost.Math Integration] ** xref:examples.adoc#examples_format[Formatting] diff --git a/doc/modules/ROOT/pages/conversions.adoc b/doc/modules/ROOT/pages/conversions.adoc index 97e2d15b1..2a377800e 100644 --- a/doc/modules/ROOT/pages/conversions.adoc +++ b/doc/modules/ROOT/pages/conversions.adoc @@ -116,16 +116,27 @@ constexpr T from_dpd(unsigned __int128 bits) noexcept; ---- == Bit Conversions Example + +The following example is copied and pasted from the examples/ folder of the library and is called https://github.com/cppalliance/decimal/blob/develop/examples/bit_conversions.cpp[bit_conversions.cpp]. + [source, c++] ---- -#include +#include "test.hpp" +#include +#include +#include +#include #include -#include - -using namespace boost::decimal; int main() { + using boost::decimal::decimal32_t; + using boost::decimal::decimal_fast32_t; + using boost::decimal::from_bid; + using boost::decimal::from_dpd; + using boost::decimal::to_bid; + using boost::decimal::to_dpd; + const decimal_fast32_t fast_type {5}; const std::uint32_t BID_bits {to_bid(fast_type)}; const std::uint32_t DPD_bits {to_dpd(fast_type)}; @@ -137,7 +148,9 @@ int main() const decimal32_t bid_decimal {from_bid(BID_bits)}; const decimal32_t dpd_decimal {from_dpd(DPD_bits)}; - return !(bid_decimal == dpd_decimal); + BOOST_DECIMAL_TEST_NE(bid_decimal, dpd_decimal); + + return boost::decimal::test::report_errors(); } ---- Output: From ea6c77be831f206707d123b1177cb345471336ca Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 13:08:54 +0100 Subject: [PATCH 587/967] Further simplify the example --- examples/bit_conversions.cpp | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/examples/bit_conversions.cpp b/examples/bit_conversions.cpp index 00cb0f2bd..a40d496b1 100644 --- a/examples/bit_conversions.cpp +++ b/examples/bit_conversions.cpp @@ -2,9 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#include "test.hpp" #include -#include #include #include #include @@ -12,24 +10,33 @@ int main() { using boost::decimal::decimal32_t; - using boost::decimal::decimal_fast32_t; using boost::decimal::from_bid; using boost::decimal::from_dpd; using boost::decimal::to_bid; using boost::decimal::to_dpd; - const decimal_fast32_t fast_type {5}; - const std::uint32_t BID_bits {to_bid(fast_type)}; - const std::uint32_t DPD_bits {to_dpd(fast_type)}; + // First we construct a decimal value and then convert it into both BID and DPD encoded bits + const decimal32_t decimal_value {5}; + const std::uint32_t BID_bits {to_bid(decimal_value)}; + const std::uint32_t DPD_bits {to_dpd(decimal_value)}; + // Display the difference between the hex values of both bit encodings std::cout << std::hex << "BID format: " << BID_bits << '\n' << "DPD format: " << DPD_bits << std::endl; + // Recover the original value by encoding two new decimals using the from_bid and from_dpd functions const decimal32_t bid_decimal {from_bid(BID_bits)}; const decimal32_t dpd_decimal {from_dpd(DPD_bits)}; - BOOST_DECIMAL_TEST_NE(bid_decimal, dpd_decimal); - - return boost::decimal::test::report_errors(); + if (bid_decimal == dpd_decimal) + { + // These should both have recovered the original value of 5 + return 0; + } + else + { + // Something has gone wrong recovering the decimal values + return 1; + } } From f66a652eb543d593a76cf049c97b66a01e3df5ea Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 13:09:58 +0100 Subject: [PATCH 588/967] Update example --- doc/modules/ROOT/pages/conversions.adoc | 29 +++++++++++++++---------- 1 file changed, 18 insertions(+), 11 deletions(-) diff --git a/doc/modules/ROOT/pages/conversions.adoc b/doc/modules/ROOT/pages/conversions.adoc index 2a377800e..ab73b4cb3 100644 --- a/doc/modules/ROOT/pages/conversions.adoc +++ b/doc/modules/ROOT/pages/conversions.adoc @@ -121,9 +121,7 @@ The following example is copied and pasted from the examples/ folder of the libr [source, c++] ---- -#include "test.hpp" #include -#include #include #include #include @@ -131,30 +129,39 @@ The following example is copied and pasted from the examples/ folder of the libr int main() { using boost::decimal::decimal32_t; - using boost::decimal::decimal_fast32_t; using boost::decimal::from_bid; using boost::decimal::from_dpd; using boost::decimal::to_bid; using boost::decimal::to_dpd; - const decimal_fast32_t fast_type {5}; - const std::uint32_t BID_bits {to_bid(fast_type)}; - const std::uint32_t DPD_bits {to_dpd(fast_type)}; + // First we construct a decimal value and then convert it into both BID and DPD encoded bits + const decimal32_t decimal_value {5}; + const std::uint32_t BID_bits {to_bid(decimal_value)}; + const std::uint32_t DPD_bits {to_dpd(decimal_value)}; + // Display the difference between the hex values of both bit encodings std::cout << std::hex << "BID format: " << BID_bits << '\n' << "DPD format: " << DPD_bits << std::endl; + // Recover the original value by encoding two new decimals using the from_bid and from_dpd functions const decimal32_t bid_decimal {from_bid(BID_bits)}; const decimal32_t dpd_decimal {from_dpd(DPD_bits)}; - BOOST_DECIMAL_TEST_NE(bid_decimal, dpd_decimal); - - return boost::decimal::test::report_errors(); + if (bid_decimal == dpd_decimal) + { + // These should both have recovered the original value of 5 + return 0; + } + else + { + // Something has gone wrong recovering the decimal values + return 1; + } } ---- Output: ---- -BID format: 31fc4b40 -DPD format: 35f00000 +BID format: 32800005 +DPD format: 22500005 ---- From c39529c46cbf3cf48103130e4cf8d81c14af569d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 13:11:59 +0100 Subject: [PATCH 589/967] Add note on the difference between BID and DPD --- doc/modules/ROOT/pages/conversions.adoc | 1 + 1 file changed, 1 insertion(+) diff --git a/doc/modules/ROOT/pages/conversions.adoc b/doc/modules/ROOT/pages/conversions.adoc index ab73b4cb3..1cbf5d2f5 100644 --- a/doc/modules/ROOT/pages/conversions.adoc +++ b/doc/modules/ROOT/pages/conversions.adoc @@ -9,6 +9,7 @@ https://www.boost.org/LICENSE_1_0.txt :idprefix: conversions_ IEEE 754 specifies two different encodings for decimal floating point types: Binary Integer Significand Field (BID), and Densely Packed Decimal Significand Field (DPD). +The former is designed for software implementations and the latter for hardware implementations. Internally this library is implemented in the BID format for the IEEE-754 compliant types. Should the user want to capture the bit format in BID or convert to DPD we offer a family of conversion functions: `to_bid`, `from_bid`, `to_dpd`, and `from_dpd` that allow conversion to or from the bit strings regardless of encoding. From 1d123313c125f585cb202fca94f4ac05622fe1b9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 13:18:47 +0100 Subject: [PATCH 590/967] Add some more context to ADL example --- doc/modules/ROOT/pages/examples.adoc | 49 +++++++++++++++------------- examples/adl.cpp | 5 +++ 2 files changed, 31 insertions(+), 23 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 3e3bd8b0a..bcd1a0850 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -103,42 +103,45 @@ Returned Value: 0.25 [#examples_generic_programming] == Generic Programming + +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/adl.cpp[adl.cpp]. + [source, c++] ---- +#include "test.hpp" #include -#include #include -int error_counter = 0; - template -bool float_equal(T lhs, T rhs) +void sin_identity(T val) { - using std::fabs; - return fabs(lhs - rhs) < std::numeric_limits::epsilon(); // numeric_limits is overloaded for all decimal types -} - -template -void test(T val) -{ - using std::sin; // ADL allows builtin and decimal types to both be used - if (!float_equal(sin(val), -sin(-val))) // sin(x) == -sin(-x) - { - ++error_counter; - } + // ADL allows builtin and decimal types to both be used + // Boost.Decimal is not allowed to overload std::sin so it must be provided in its own namespace + // You must also include using std::sin to ensure that it is found for the float, double, and long double cases. + // It is preferred to have using statements for the functions you intend to use instead of using namespace XXX. + using std::sin; + using boost::decimal::sin; + + // sin(x) = -sin(-x) + // The call here MUST be unqualified, or you will get compiler errors + // For example calling std::sin here would not allow any of the decimal types to be used + BOOST_DECIMAL_TEST_EQ(sin(val), -sin(-val)); } int main() { - test(-0.5F); - test(-0.5); - test(-0.5L); + // Because of the two using statements in the above function we can now call it with built-in floating point, + // or our decimal types as show below + + sin_identity(-0.5F); + sin_identity(-0.5); + sin_identity(-0.5L); - test(boost::decimal::decimal32_t{5, -1, true}); - test(boost::decimal::decimal64_t{5, -1, true}); - test(boost::decimal::decimal128_t{5, -1, true}); + sin_identity(boost::decimal::decimal32_t{"-0.5"}); + sin_identity(boost::decimal::decimal64_t{"-0.5"}); + sin_identity(boost::decimal::decimal128_t{"-0.5"}); - return error_counter; + return boost::decimal::test::report_errors(); } ---- diff --git a/examples/adl.cpp b/examples/adl.cpp index ade797c0b..a192b7e27 100644 --- a/examples/adl.cpp +++ b/examples/adl.cpp @@ -13,10 +13,15 @@ template void sin_identity(T val) { // ADL allows builtin and decimal types to both be used + // Boost.Decimal is not allowed to overload std::sin so it must be provided in its own namespace + // You must also include using std::sin to ensure that it is found for the float, double, and long double cases. + // It is preferred to have using statements for the functions you intend to use instead of using namespace XXX. using std::sin; using boost::decimal::sin; // sin(x) = -sin(-x) + // The call here MUST be unqualified, or you will get compiler errors + // For example calling std::sin here would not allow any of the decimal types to be used BOOST_DECIMAL_TEST_EQ(sin(val), -sin(-val)); } From 14d4bbf3acd4bfbf77aacf867fadc06a1245a1c7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 13:21:27 +0100 Subject: [PATCH 591/967] Fix unreachable code --- include/boost/decimal/detail/cmath/nan.hpp | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/include/boost/decimal/detail/cmath/nan.hpp b/include/boost/decimal/detail/cmath/nan.hpp index 84dc70f50..5379ed27b 100644 --- a/include/boost/decimal/detail/cmath/nan.hpp +++ b/include/boost/decimal/detail/cmath/nan.hpp @@ -45,16 +45,6 @@ constexpr auto nan_impl(const char* arg) noexcept { return write_payload(payload_value); } - - TargetDecimalType return_value {nan_type}; - if (!r) - { - return return_value; - } - else - { - return write_payload(payload_value); - } } template From 57053c52039aaf36879728b30f847f7f781ae0f0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 13:56:30 +0100 Subject: [PATCH 592/967] Simplify detection macro for support Closes: #1201 --- include/boost/decimal/format.hpp | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/include/boost/decimal/format.hpp b/include/boost/decimal/format.hpp index 8a740d581..7f66d5176 100644 --- a/include/boost/decimal/format.hpp +++ b/include/boost/decimal/format.hpp @@ -5,9 +5,7 @@ #ifndef BOOST_DECIMAL_FORMAT_HPP #define BOOST_DECIMAL_FORMAT_HPP -// Many compilers seem to have with completely broken support so narrow down our support range -#if (__cplusplus >= 202002L || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)) && !defined(BOOST_DECIMAL_DISABLE_CLIB) && \ - ((defined(__GNUC__) && __GNUC__ >= 13) || (defined(__clang__) && __clang_major__ >= 18) || (defined(_MSC_VER) && _MSC_VER >= 1940)) +#if __has_include() && defined(__cpp_lib_format) && __cpp_lib_format >= 201907L && !defined(BOOST_DECIMAL_DISABLE_CLIB) #define BOOST_DECIMAL_HAS_FORMAT_SUPPORT @@ -315,6 +313,6 @@ struct formatter } // Namespace std -#endif +#endif // compatibility #endif //BOOST_DECIMAL_FORMAT_HPP From f2bf3b6e61b598a0dd4c55367aba7812e9904f38 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 14:37:44 +0100 Subject: [PATCH 593/967] Using string constructor --- examples/fmt_format.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/examples/fmt_format.cpp b/examples/fmt_format.cpp index 792dc6316..3fa18214d 100644 --- a/examples/fmt_format.cpp +++ b/examples/fmt_format.cpp @@ -10,8 +10,8 @@ int main() { - constexpr boost::decimal::decimal64_t val1 {314, -2}; - constexpr boost::decimal::decimal32_t val2 {3141, -3}; + constexpr boost::decimal::decimal64_t val1 {"3.14"}; + constexpr boost::decimal::decimal32_t val2 {"3.141"}; // The easiest is no specification which is general format // Given these values they will print in fixed format From 19356545dd11ae408cfa977440f832978e2d6a3d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 14:37:51 +0100 Subject: [PATCH 594/967] Redo example --- examples/format.cpp | 27 +++++++++++++++++++++++---- 1 file changed, 23 insertions(+), 4 deletions(-) diff --git a/examples/format.cpp b/examples/format.cpp index e2b3b68c2..41dd880f8 100644 --- a/examples/format.cpp +++ b/examples/format.cpp @@ -11,11 +11,30 @@ int main() { - constexpr boost::decimal::decimal64_t val1 {314, -2}; - constexpr boost::decimal::decimal32_t val2 {3141, -3}; - + constexpr boost::decimal::decimal64_t val1 {"3.14"}; + constexpr boost::decimal::decimal32_t val2 {"3.141"}; + + // The easiest is no specification which is general format + // Given these values they will print in fixed format + std::cout << "Default Format:\n"; + std::cout << std::format("{}", val1) << '\n'; + std::cout << std::format("{}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + std::cout << "Scientific Format:\n"; + std::cout << std::format("{:e}", val1) << '\n'; + std::cout << std::format("{:e}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + // Here this gives one digit of precision rounded according to current rounding mode + std::cout << "Scientific Format with Specified Precision:\n"; + std::cout << std::format("{:.1e}", val1) << '\n'; + std::cout << std::format("{:.1e}", val2) << "\n\n"; + + // This combines the padding modifier (10), precision (3 digits), and a type modifier (e) + std::cout << "Scientific Format with Specified Precision and Padding:\n"; std::cout << std::format("{:10.3e}", val1) << '\n'; - std::cout << std::format("{:10.3e}", val2) << std::endl; + std::cout << std::format("{:10.3e}", val2) << '\n'; return 0; } From e365f70fc2c7a314228b67874a3c6b6e961b4270 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 14:38:07 +0100 Subject: [PATCH 595/967] Redo format doc page --- doc/modules/ROOT/pages/format.adoc | 75 ++++++++++++++++++------------ 1 file changed, 46 insertions(+), 29 deletions(-) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index 3695f181d..c9468a6e7 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -8,7 +8,7 @@ https://www.boost.org/LICENSE_1_0.txt = Formating support :idprefix: format_ -Boost.Decimal supports formatting with both `` (when C++20 and header are both available) and ``. +Boost.Decimal supports formatting with both `` (when C++20 and header are both available), and `` with all language standards. [#std_format] == `` @@ -87,31 +87,8 @@ String literal pass:["{Sign, Padding, Precision, Type, Locale}"] === Examples -The example is padding modifiers can be done like so +This example can be found in the examples/ folder as https://github.com/cppalliance/decimal/blob/develop/examples/fmt_format.cpp[fmt_format.cpp] -[source, c++] ----- -#include // or -#include -#include - -int main() -{ - constexpr boost::decimal::decimal64_t val1 {314, -2}; - constexpr boost::decimal::decimal32_t val2 {3141, -3}; - - std::cout << std::format("{:10.3e}", val1) << '\n'; - std::cout << std::format("{:10.3e}", val2) << std::endl; - - return 0; -} ----- - -[#fmt_format] -== `` - -Support for pass:[{fmt}] is also available. -All the above information on modifiers is the same for fmtlib, just in a different namespace (i.e. `fmt::` instead of `std::`). The header `` is *NOT* part of the convenience header, because it is an optional dependency on a potentially compiled library. [source, c++] @@ -123,12 +100,52 @@ The header `` is *NOT* part of the convenience hea int main() { - constexpr boost::decimal::decimal64_t val1 {314, -2}; - constexpr boost::decimal::decimal32_t val2 {3141, -3}; - + constexpr boost::decimal::decimal64_t val1 {"3.14"}; + constexpr boost::decimal::decimal32_t val2 {"3.141"}; + + // The easiest is no specification which is general format + // Given these values they will print in fixed format + std::cout << "Default Format:\n"; + std::cout << fmt::format("{}", val1) << '\n'; + std::cout << fmt::format("{}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + std::cout << "Scientific Format:\n"; + std::cout << fmt::format("{:e}", val1) << '\n'; + std::cout << fmt::format("{:e}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + // Here this gives one digit of precision rounded according to current rounding mode + std::cout << "Scientific Format with Specified Precision:\n"; + std::cout << fmt::format("{:.1e}", val1) << '\n'; + std::cout << fmt::format("{:.1e}", val2) << "\n\n"; + + // This combines the padding modifier (10), precision (3 digits), and a type modifier (e) + std::cout << "Scientific Format with Specified Precision and Padding:\n"; std::cout << fmt::format("{:10.3e}", val1) << '\n'; - std::cout << fmt::format("{:10.3e}", val2) << std::endl; + std::cout << fmt::format("{:10.3e}", val2) << '\n'; return 0; } ---- + +Output: +---- +Default Format: +3.14 +3.141 + +Scientific Format: +3.14e+00 +3.141e+00 + +Scientific Format with Specified Precision: +3.1e+00 +3.1e+00 + +Scientific Format with Specified Precision and Padding: +03.140e+00 +03.141e+00 +---- + +This same example can be run with `` by replacing namespaces `fmt::` with `std::`. From 5c72c7e4cf0a1c436c174f8ff542063114259a5d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 15:41:41 +0100 Subject: [PATCH 596/967] Remove BOOST_DECIMAL_REDUCE_TEST_DEPTH from public headers --- include/boost/decimal/detail/config.hpp | 20 ------------------ test/testing_config.hpp | 28 +++++++++++++++++++++++++ 2 files changed, 28 insertions(+), 20 deletions(-) create mode 100644 test/testing_config.hpp diff --git a/include/boost/decimal/detail/config.hpp b/include/boost/decimal/detail/config.hpp index 54d5e2c50..3855e7a62 100644 --- a/include/boost/decimal/detail/config.hpp +++ b/include/boost/decimal/detail/config.hpp @@ -272,26 +272,6 @@ typedef unsigned __int128 builtin_uint128_t; # define BOOST_DECIMAL_NO_CONSTEVAL_DETECTION #endif -#if defined(__clang__) -# if defined __has_feature -# if __has_feature(thread_sanitizer) || __has_feature(address_sanitizer) || __has_feature(thread_sanitizer) -# define BOOST_DECIMAL_REDUCE_TEST_DEPTH -# endif -# endif -#elif defined(__GNUC__) -# if defined(__SANITIZE_THREAD__) || defined(__SANITIZE_ADDRESS__) || defined(__SANITIZE_THREAD__) -# define BOOST_DECIMAL_REDUCE_TEST_DEPTH -# endif -#elif defined(_MSC_VER) -# if defined(_DEBUG) || defined(__SANITIZE_ADDRESS__) -# define BOOST_DECIMAL_REDUCE_TEST_DEPTH -# endif -#endif - -#if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) && ((defined(UBSAN) && (UBSAN == 1))) -# define BOOST_DECIMAL_REDUCE_TEST_DEPTH -#endif - #if defined(__clang__) && __clang_major__ < 19 # define BOOST_DECIMAL_CLANG_STATIC static #else diff --git a/test/testing_config.hpp b/test/testing_config.hpp new file mode 100644 index 000000000..769a95744 --- /dev/null +++ b/test/testing_config.hpp @@ -0,0 +1,28 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_TESTING_CONFIG_HPP +#define BOOST_DECIMAL_TESTING_CONFIG_HPP + +#if defined(__clang__) +# if defined __has_feature +# if __has_feature(thread_sanitizer) || __has_feature(address_sanitizer) || __has_feature(thread_sanitizer) +# define BOOST_DECIMAL_REDUCE_TEST_DEPTH +# endif +# endif +#elif defined(__GNUC__) +# if defined(__SANITIZE_THREAD__) || defined(__SANITIZE_ADDRESS__) || defined(__SANITIZE_THREAD__) +# define BOOST_DECIMAL_REDUCE_TEST_DEPTH +# endif +#elif defined(_MSC_VER) +# if defined(_DEBUG) || defined(__SANITIZE_ADDRESS__) +# define BOOST_DECIMAL_REDUCE_TEST_DEPTH +# endif +#endif + +#if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) && ((defined(UBSAN) && (UBSAN == 1))) +# define BOOST_DECIMAL_REDUCE_TEST_DEPTH +#endif + +#endif // BOOST_DECIMAL_TESTING_CONFIG_HPP From 806252b2e65842b5dd2052e2b8ad6031bc466f90 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 15:51:39 +0100 Subject: [PATCH 597/967] Use new testing configuration header --- test/compare_dec128_and_fast.cpp | 1 + test/random_decimal128_comp.cpp | 1 + test/random_decimal128_fast_comp.cpp | 1 + test/random_decimal128_fast_math.cpp | 1 + test/random_decimal128_math.cpp | 1 + test/random_decimal32_comp.cpp | 1 + test/random_decimal32_fast_comp.cpp | 1 + test/random_decimal32_fast_math.cpp | 1 + test/random_decimal32_math.cpp | 1 + test/random_decimal64_comp.cpp | 1 + test/random_decimal64_fast_comp.cpp | 1 + test/random_decimal64_fast_math.cpp | 1 + test/random_decimal64_math.cpp | 1 + test/random_mixed_decimal_comp.cpp | 1 + test/random_mixed_decimal_math.cpp | 1 + test/roundtrip_decimal128.cpp | 2 +- test/roundtrip_decimal128_fast.cpp | 2 +- test/roundtrip_decimal32.cpp | 2 +- test/roundtrip_decimal32_fast.cpp | 2 +- test/roundtrip_decimal64.cpp | 2 +- test/test_acos.cpp | 1 + test/test_acosh.cpp | 1 + test/test_asin.cpp | 1 + test/test_asinh.cpp | 1 + test/test_assoc_laguerre.cpp | 1 + test/test_assoc_legendre.cpp | 1 + test/test_atan.cpp | 1 + test/test_atan2.cpp | 1 + test/test_atanh.cpp | 1 + test/test_beta.cpp | 1 + test/test_cbrt.cpp | 1 + test/test_cmath.cpp | 1 + test/test_cosh.cpp | 1 + test/test_decimal_quantum.cpp | 2 +- test/test_edges_and_behave.cpp | 1 + test/test_edit_members.cpp | 1 + test/test_ellint_1.cpp | 1 + test/test_ellint_2.cpp | 1 + test/test_erf.cpp | 5 ++++- test/test_exp.cpp | 1 + test/test_expm1.cpp | 1 + test/test_fast_math.cpp | 1 + test/test_frexp_ldexp.cpp | 1 + test/test_hermite.cpp | 1 + test/test_laguerre.cpp | 1 + test/test_legendre.cpp | 1 + test/test_lgamma.cpp | 1 + test/test_log.cpp | 1 + test/test_log10.cpp | 1 + test/test_log1p.cpp | 1 + test/test_pow.cpp | 1 + test/test_remainder_remquo.cpp | 1 + test/test_sin_cos.cpp | 1 + test/test_sinh.cpp | 1 + test/test_sqrt.cpp | 1 + test/test_strtod.cpp | 1 + test/test_tan.cpp | 1 + test/test_tanh.cpp | 1 + test/test_tgamma.cpp | 1 + test/test_to_chars.cpp | 1 + test/test_zeta.cpp | 1 + 61 files changed, 64 insertions(+), 7 deletions(-) diff --git a/test/compare_dec128_and_fast.cpp b/test/compare_dec128_and_fast.cpp index 974128d74..87ab7b765 100644 --- a/test/compare_dec128_and_fast.cpp +++ b/test/compare_dec128_and_fast.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal128_comp.cpp b/test/random_decimal128_comp.cpp index e889ecd05..b7da3b090 100644 --- a/test/random_decimal128_comp.cpp +++ b/test/random_decimal128_comp.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal128_fast_comp.cpp b/test/random_decimal128_fast_comp.cpp index b8c643698..48f26e425 100644 --- a/test/random_decimal128_fast_comp.cpp +++ b/test/random_decimal128_fast_comp.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal128_fast_math.cpp b/test/random_decimal128_fast_math.cpp index 19d96fe89..49dc8d7ce 100644 --- a/test/random_decimal128_fast_math.cpp +++ b/test/random_decimal128_fast_math.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal128_math.cpp b/test/random_decimal128_math.cpp index 1a5b320cc..913a67641 100644 --- a/test/random_decimal128_math.cpp +++ b/test/random_decimal128_math.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal32_comp.cpp b/test/random_decimal32_comp.cpp index 25c3f25fd..335e65b96 100644 --- a/test/random_decimal32_comp.cpp +++ b/test/random_decimal32_comp.cpp @@ -6,6 +6,7 @@ #include #endif +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal32_fast_comp.cpp b/test/random_decimal32_fast_comp.cpp index ae010a137..d0cba04ed 100644 --- a/test/random_decimal32_fast_comp.cpp +++ b/test/random_decimal32_fast_comp.cpp @@ -6,6 +6,7 @@ #include #endif +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal32_fast_math.cpp b/test/random_decimal32_fast_math.cpp index 120a9b46e..4714c9bf7 100644 --- a/test/random_decimal32_fast_math.cpp +++ b/test/random_decimal32_fast_math.cpp @@ -6,6 +6,7 @@ #include #endif +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal32_math.cpp b/test/random_decimal32_math.cpp index 03656427d..15e58f67c 100644 --- a/test/random_decimal32_math.cpp +++ b/test/random_decimal32_math.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal64_comp.cpp b/test/random_decimal64_comp.cpp index 559eea48b..cc1c9a871 100644 --- a/test/random_decimal64_comp.cpp +++ b/test/random_decimal64_comp.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal64_fast_comp.cpp b/test/random_decimal64_fast_comp.cpp index cba3febc9..dc201aaa1 100644 --- a/test/random_decimal64_fast_comp.cpp +++ b/test/random_decimal64_fast_comp.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal64_fast_math.cpp b/test/random_decimal64_fast_math.cpp index 34493afc3..add73e5e1 100644 --- a/test/random_decimal64_fast_math.cpp +++ b/test/random_decimal64_fast_math.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_decimal64_math.cpp b/test/random_decimal64_math.cpp index 545c223f6..f877626cd 100644 --- a/test/random_decimal64_math.cpp +++ b/test/random_decimal64_math.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_mixed_decimal_comp.cpp b/test/random_mixed_decimal_comp.cpp index d46a4f595..357d46b12 100644 --- a/test/random_mixed_decimal_comp.cpp +++ b/test/random_mixed_decimal_comp.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/random_mixed_decimal_math.cpp b/test/random_mixed_decimal_math.cpp index 81f4efae7..2ac13bf40 100644 --- a/test/random_mixed_decimal_math.cpp +++ b/test/random_mixed_decimal_math.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/roundtrip_decimal128.cpp b/test/roundtrip_decimal128.cpp index 2df3c74f7..4ca58b48f 100644 --- a/test/roundtrip_decimal128.cpp +++ b/test/roundtrip_decimal128.cpp @@ -3,7 +3,7 @@ // https://www.boost.org/LICENSE_1_0.txt #include "mini_to_chars.hpp" - +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/roundtrip_decimal128_fast.cpp b/test/roundtrip_decimal128_fast.cpp index 47af2f7db..a21f3791a 100644 --- a/test/roundtrip_decimal128_fast.cpp +++ b/test/roundtrip_decimal128_fast.cpp @@ -3,7 +3,7 @@ // https://www.boost.org/LICENSE_1_0.txt #include "mini_to_chars.hpp" - +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/roundtrip_decimal32.cpp b/test/roundtrip_decimal32.cpp index 42fe101c5..da3764804 100644 --- a/test/roundtrip_decimal32.cpp +++ b/test/roundtrip_decimal32.cpp @@ -3,7 +3,7 @@ // https://www.boost.org/LICENSE_1_0.txt #include "mini_to_chars.hpp" - +#include "testing_config.hpp" #include #include #include diff --git a/test/roundtrip_decimal32_fast.cpp b/test/roundtrip_decimal32_fast.cpp index e04ea532b..5878a0cd7 100644 --- a/test/roundtrip_decimal32_fast.cpp +++ b/test/roundtrip_decimal32_fast.cpp @@ -3,7 +3,7 @@ // https://www.boost.org/LICENSE_1_0.txt #include "mini_to_chars.hpp" - +#include "testing_config.hpp" #include #include #include diff --git a/test/roundtrip_decimal64.cpp b/test/roundtrip_decimal64.cpp index 448bcb954..f332c28b5 100644 --- a/test/roundtrip_decimal64.cpp +++ b/test/roundtrip_decimal64.cpp @@ -3,7 +3,7 @@ // https://www.boost.org/LICENSE_1_0.txt #include "mini_to_chars.hpp" - +#include "testing_config.hpp" #include #include #include diff --git a/test/test_acos.cpp b/test/test_acos.cpp index 04aca2231..eb30e7840 100644 --- a/test/test_acos.cpp +++ b/test/test_acos.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_acosh.cpp b/test/test_acosh.cpp index 4728515a1..8118346b1 100644 --- a/test/test_acosh.cpp +++ b/test/test_acosh.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_asin.cpp b/test/test_asin.cpp index 3f9f0181e..38eb93227 100644 --- a/test/test_asin.cpp +++ b/test/test_asin.cpp @@ -6,6 +6,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_asinh.cpp b/test/test_asinh.cpp index d5c3c4380..f4136c3c5 100644 --- a/test/test_asinh.cpp +++ b/test/test_asinh.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_assoc_laguerre.cpp b/test/test_assoc_laguerre.cpp index 338211c88..5b56a8eee 100644 --- a/test/test_assoc_laguerre.cpp +++ b/test/test_assoc_laguerre.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_assoc_legendre.cpp b/test/test_assoc_legendre.cpp index fc2045368..92e8bd5ad 100644 --- a/test/test_assoc_legendre.cpp +++ b/test/test_assoc_legendre.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_atan.cpp b/test/test_atan.cpp index 75acf0984..7a3739cd5 100644 --- a/test/test_atan.cpp +++ b/test/test_atan.cpp @@ -6,6 +6,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_atan2.cpp b/test/test_atan2.cpp index 98bd8c6ce..3749edc90 100644 --- a/test/test_atan2.cpp +++ b/test/test_atan2.cpp @@ -5,6 +5,7 @@ // Propagates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_atanh.cpp b/test/test_atanh.cpp index 1367fe7c2..567412a58 100644 --- a/test/test_atanh.cpp +++ b/test/test_atanh.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_beta.cpp b/test/test_beta.cpp index 0d3988e22..be33dc2c8 100644 --- a/test/test_beta.cpp +++ b/test/test_beta.cpp @@ -5,6 +5,7 @@ // Propagates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_cbrt.cpp b/test/test_cbrt.cpp index 92e4404c3..59fe01605 100644 --- a/test/test_cbrt.cpp +++ b/test/test_cbrt.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_cmath.cpp b/test/test_cmath.cpp index dc9a86bda..4bc22ebc1 100644 --- a/test/test_cmath.cpp +++ b/test/test_cmath.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #include #include diff --git a/test/test_cosh.cpp b/test/test_cosh.cpp index 71e611cfc..f0118767e 100644 --- a/test/test_cosh.cpp +++ b/test/test_cosh.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_decimal_quantum.cpp b/test/test_decimal_quantum.cpp index 5af453324..4126a4f22 100644 --- a/test/test_decimal_quantum.cpp +++ b/test/test_decimal_quantum.cpp @@ -3,7 +3,7 @@ // https://www.boost.org/LICENSE_1_0.txt #include "mini_to_chars.hpp" - +#include "testing_config.hpp" #include #include #include diff --git a/test/test_edges_and_behave.cpp b/test/test_edges_and_behave.cpp index 69b2aae2b..0d90fb4fe 100644 --- a/test/test_edges_and_behave.cpp +++ b/test/test_edges_and_behave.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include diff --git a/test/test_edit_members.cpp b/test/test_edit_members.cpp index c4e36c801..8f325c9cc 100644 --- a/test/test_edit_members.cpp +++ b/test/test_edit_members.cpp @@ -4,6 +4,7 @@ #define BOOST_DECIMAL_DEBUG_MEMBERS +#include "testing_config.hpp" #include #include #include diff --git a/test/test_ellint_1.cpp b/test/test_ellint_1.cpp index 9ce19e78e..c293dc7e0 100644 --- a/test/test_ellint_1.cpp +++ b/test/test_ellint_1.cpp @@ -6,6 +6,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_ellint_2.cpp b/test/test_ellint_2.cpp index b1f8c1450..d310141f9 100644 --- a/test/test_ellint_2.cpp +++ b/test/test_ellint_2.cpp @@ -6,6 +6,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_erf.cpp b/test/test_erf.cpp index c4b844722..5d395cab4 100644 --- a/test/test_erf.cpp +++ b/test/test_erf.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) @@ -33,7 +34,9 @@ // Needed to reduce CI runtime #ifdef _MSC_VER -# define BOOST_DECIMAL_REDUCE_TEST_DEPTH +# ifndef BOOST_DECIMAL_REDUCE_TEST_DEPTH +# define BOOST_DECIMAL_REDUCE_TEST_DEPTH +# endif #endif #if !defined(BOOST_DECIMAL_REDUCE_TEST_DEPTH) && !defined(_MSC_VER) diff --git a/test/test_exp.cpp b/test/test_exp.cpp index c37ecab50..3b8e02594 100644 --- a/test/test_exp.cpp +++ b/test/test_exp.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_expm1.cpp b/test/test_expm1.cpp index 573c762b6..3642eb45b 100644 --- a/test/test_expm1.cpp +++ b/test/test_expm1.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_fast_math.cpp b/test/test_fast_math.cpp index 6e8ec10d7..468f1bac6 100644 --- a/test/test_fast_math.cpp +++ b/test/test_fast_math.cpp @@ -4,6 +4,7 @@ #define BOOST_DECIMAL_FAST_MATH +#include "testing_config.hpp" #include #include #include diff --git a/test/test_frexp_ldexp.cpp b/test/test_frexp_ldexp.cpp index d918dad71..201558489 100644 --- a/test/test_frexp_ldexp.cpp +++ b/test/test_frexp_ldexp.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_hermite.cpp b/test/test_hermite.cpp index dd15dc9de..63ef25f7e 100644 --- a/test/test_hermite.cpp +++ b/test/test_hermite.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_laguerre.cpp b/test/test_laguerre.cpp index 7d114454e..70af27d47 100644 --- a/test/test_laguerre.cpp +++ b/test/test_laguerre.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_legendre.cpp b/test/test_legendre.cpp index afc3faffb..71a37f567 100644 --- a/test/test_legendre.cpp +++ b/test/test_legendre.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_lgamma.cpp b/test/test_lgamma.cpp index 588e64bd9..97346ef52 100644 --- a/test/test_lgamma.cpp +++ b/test/test_lgamma.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_log.cpp b/test/test_log.cpp index fecb47ba9..8ce457913 100644 --- a/test/test_log.cpp +++ b/test/test_log.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_log10.cpp b/test/test_log10.cpp index d8312606e..89c02a79c 100644 --- a/test/test_log10.cpp +++ b/test/test_log10.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_log1p.cpp b/test/test_log1p.cpp index 830bca5b4..760e6d07a 100644 --- a/test/test_log1p.cpp +++ b/test/test_log1p.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_pow.cpp b/test/test_pow.cpp index 4ca7bc25d..81244491c 100644 --- a/test/test_pow.cpp +++ b/test/test_pow.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_remainder_remquo.cpp b/test/test_remainder_remquo.cpp index 24949d99a..e36e335c4 100644 --- a/test/test_remainder_remquo.cpp +++ b/test/test_remainder_remquo.cpp @@ -5,6 +5,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) diff --git a/test/test_sin_cos.cpp b/test/test_sin_cos.cpp index 0ab0727dd..f7baa89cd 100644 --- a/test/test_sin_cos.cpp +++ b/test/test_sin_cos.cpp @@ -6,6 +6,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #include diff --git a/test/test_sinh.cpp b/test/test_sinh.cpp index 9d8d5fcf2..539b9cc41 100644 --- a/test/test_sinh.cpp +++ b/test/test_sinh.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_sqrt.cpp b/test/test_sqrt.cpp index 597841c67..578cb2db5 100644 --- a/test/test_sqrt.cpp +++ b/test/test_sqrt.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_strtod.cpp b/test/test_strtod.cpp index c54c07cdf..453c13bcd 100644 --- a/test/test_strtod.cpp +++ b/test/test_strtod.cpp @@ -2,6 +2,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include "mini_to_chars.hpp" #include #include diff --git a/test/test_tan.cpp b/test/test_tan.cpp index 313fa7a35..f112612e3 100644 --- a/test/test_tan.cpp +++ b/test/test_tan.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_tanh.cpp b/test/test_tanh.cpp index 4c36a81e2..ffe11d8a7 100644 --- a/test/test_tanh.cpp +++ b/test/test_tanh.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_tgamma.cpp b/test/test_tgamma.cpp index 68efb5c9b..6d4ca59c0 100644 --- a/test/test_tgamma.cpp +++ b/test/test_tgamma.cpp @@ -3,6 +3,7 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include "testing_config.hpp" #include #include #include diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index 34f4da8d3..99312f5a2 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -8,6 +8,7 @@ # pragma GCC diagnostic ignored "-Warray-bounds" #endif +#include "testing_config.hpp" #include "mini_to_chars.hpp" #include #include diff --git a/test/test_zeta.cpp b/test/test_zeta.cpp index 12bb1e9c7..9c98f779f 100644 --- a/test/test_zeta.cpp +++ b/test/test_zeta.cpp @@ -6,6 +6,7 @@ // Propogates up from boost.math #define _SILENCE_CXX23_DENORM_DEPRECATION_WARNING +#include "testing_config.hpp" #include #if defined(__clang__) From b3cd50350b7136cfc13b90e030a50f75feeef2c5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 15:53:13 +0100 Subject: [PATCH 598/967] Remove debug pattern function --- include/boost/decimal/decimal32_t.hpp | 14 ----------- test/test_decimal32.cpp | 35 --------------------------- 2 files changed, 49 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 4ad62bf46..eeb922d54 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -170,7 +170,6 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special // Debug bit pattern friend constexpr auto from_bits(std::uint32_t bits) noexcept -> decimal32_t; friend BOOST_DECIMAL_CXX20_CONSTEXPR auto to_bits(decimal32_t rhs) noexcept -> std::uint32_t; - friend inline auto debug_pattern(decimal32_t rhs) noexcept -> void; // Equality template between any integer type and decimal32_t template @@ -2037,19 +2036,6 @@ constexpr auto decimal32_t::operator%=(const decimal32_t rhs) noexcept -> decima return *this; } -// LCOV_EXCL_START -inline auto debug_pattern(const decimal32_t rhs) noexcept -> void -{ - #if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) - std::cerr << "Sig: " << rhs.full_significand() - << "\nExp: " << rhs.biased_exponent() - << "\nNeg: " << rhs.isneg() << std::endl; - #else - static_cast(rhs); - #endif -} -// LCOV_EXCL_STOP - BOOST_DECIMAL_CXX20_CONSTEXPR decimal32_t::operator float() const noexcept { return to_float(*this); diff --git a/test/test_decimal32.cpp b/test/test_decimal32.cpp index f31737ebc..a3bdc32e4 100644 --- a/test/test_decimal32.cpp +++ b/test/test_decimal32.cpp @@ -417,31 +417,6 @@ void test_construct_from_integer() } } -template -void test_construct_from_float() -{ - constexpr decimal32_t one(1, 0); - decimal32_t float_one(T(1)); - if(!BOOST_TEST_EQ(one, float_one)) - { - debug_pattern(float_one); // LCOV_EXCL_LINE - } - - constexpr decimal32_t fraction(12345, -4); - decimal32_t float_frac(T(1.2345)); - if(!BOOST_TEST_EQ(fraction, float_frac)) - { - debug_pattern(float_frac); // LCOV_EXCL_LINE - } - - constexpr decimal32_t neg_frac(98123, -4, true); - decimal32_t neg_float_frac(T(-9.8123)); - if(!BOOST_TEST_EQ(neg_frac, neg_float_frac)) - { - debug_pattern(neg_float_frac); // LCOV_EXCL_LINE - } -} - template void spot_check_addition(T a, T b, T res) { @@ -491,16 +466,6 @@ int main() test_construct_from_integer(); test_construct_from_integer(); - test_construct_from_float(); - test_construct_from_float(); - - #if BOOST_DECIMAL_LDBL_BITS != 128 - test_construct_from_float(); - #endif - #ifdef BOOST_DECIMAL_HAS_FLOAT128 - //test_construct_from_float<__float128>(); - #endif - test_comp(); test_addition(); From 5ffac74da77cad67490a322326669b9080244fa9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 15:54:37 +0100 Subject: [PATCH 599/967] Remove bit_string function --- include/boost/decimal/decimal128_t.hpp | 13 ------ test/test_decimal128_basis.cpp | 56 -------------------------- 2 files changed, 69 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 5568a71a0..d030e6ae0 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -530,10 +530,6 @@ BOOST_DECIMAL_EXPORT class decimal128_t final BOOST_DECIMAL_REQUIRES_RETURN(detail::is_integral_v, Integer, std::partial_ordering); #endif - #if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) - friend inline std::string bit_string(decimal128_t rhs) noexcept; - #endif - // 3.6.4 Same Quantum friend constexpr auto samequantumd128(const decimal128_t& lhs, const decimal128_t& rhs) noexcept -> bool; @@ -606,15 +602,6 @@ BOOST_DECIMAL_EXPORT class decimal128_t final friend constexpr auto fmad128(decimal128_t x, decimal128_t y, decimal128_t z) noexcept -> decimal128_t; }; -#if !defined(BOOST_DECIMAL_DISABLE_IOSTREAM) -inline std::string bit_string(decimal128_t rhs) noexcept -{ - std::stringstream ss; - ss << std::hex << rhs.bits_.high << rhs.bits_.low; - return ss.str(); -} -#endif - #ifdef BOOST_DECIMAL_HAS_INT128 constexpr auto from_bits(const detail::builtin_uint128_t rhs) noexcept -> decimal128_t diff --git a/test/test_decimal128_basis.cpp b/test/test_decimal128_basis.cpp index a383e93a7..758e3315e 100644 --- a/test/test_decimal128_basis.cpp +++ b/test/test_decimal128_basis.cpp @@ -14,61 +14,6 @@ using namespace boost::decimal; -#if BOOST_DECIMAL_ENDIAN_LITTLE_BYTE && defined(BOOST_DECIMAL_HAS_INT128) -void test_binary_constructor() -{ - decimal128_t one(0b1, -6175); - // 0 for sign - // 00000 for combination field - // 00000000 for exp - // 1 for significand - BOOST_TEST_EQ(bit_string(one), "4000000000001"); - - decimal128_t neg_one(-0b1, -6175); - // 1 for sign - // 00000 for combination field - // 00000000 for exp - // 1 for significand - BOOST_TEST_EQ(bit_string(neg_one), "80004000000000001"); - - decimal128_t two(0b10, -6175); - // 0 for sign - // 00000 for combination field - // 00000000 for exp - // 2 for significand - BOOST_TEST_EQ(bit_string(two), "4000000000002"); - - decimal128_t three(0b11, -6175); - // 0 for sign - // 00000 for combination field - // 00000000 for exp - // 3 for significand - BOOST_TEST_EQ(bit_string(three), "4000000000003"); - - decimal128_t big(UINT64_MAX, -6175); - // 0 for sign - // 00000 for combination field - // 00000000 for exp - // FFFFFFFFFFFFFFFF for significand - BOOST_TEST_EQ(bit_string(big), "400000000000ffffffffffffffff"); - - decimal128_t onee1(0b1, -6174); - // 0 for sign - // 00000 for combination field - // 00000001 for exp - // 1 for significand - BOOST_TEST_EQ(bit_string(onee1), "8000000000001"); -} - -#else - -void test_binary_constructor() -{ - //nothing -} - -#endif - void test_non_finite_values() { const decimal128_t one(0b1, 0); @@ -123,7 +68,6 @@ void test_float_constructor() int main() { - test_binary_constructor(); test_non_finite_values(); test_float_constructor(); From 3d53da7b55eaaec84244032069f252322f9d3a24 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 6 Nov 2025 16:20:11 +0100 Subject: [PATCH 600/967] Change terminal formating --- include/boost/decimal/string.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/string.hpp b/include/boost/decimal/string.hpp index f5846cf6e..8b6a31fbd 100644 --- a/include/boost/decimal/string.hpp +++ b/include/boost/decimal/string.hpp @@ -18,7 +18,7 @@ auto to_string(const DecimalType value) BOOST_DECIMAL_REQUIRES_RETURN(detail::is_decimal_floating_point_v, DecimalType, std::string) { char buffer[64]; - auto r = to_chars(buffer, buffer + sizeof(buffer), value, chars_format::fixed, 6); + auto r = to_chars(buffer, buffer + sizeof(buffer), value); *r.ptr = '\0'; return std::string(buffer); } From 429c0a2857fcf26f49f4f7ade87ff14f2407f136 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 10:21:34 +0100 Subject: [PATCH 601/967] Adjust tests to match behavior --- test/test_to_string.cpp | 39 +++++++++++++++++++++++++++++---------- 1 file changed, 29 insertions(+), 10 deletions(-) diff --git a/test/test_to_string.cpp b/test/test_to_string.cpp index b27a21e38..79fdc3c95 100644 --- a/test/test_to_string.cpp +++ b/test/test_to_string.cpp @@ -13,19 +13,34 @@ using namespace boost::decimal; #if !defined(BOOST_DECIMAL_DISABLE_CLIB) +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable:4127) +#endif + template void test() { - BOOST_TEST_EQ(to_string(T{1}), "1.000000"); - BOOST_TEST_EQ(to_string(T{10}), "10.000000"); - BOOST_TEST_EQ(to_string(T{100}), "100.000000"); - BOOST_TEST_EQ(to_string(T{1000}), "1000.000000"); - BOOST_TEST_EQ(to_string(T{10000}), "10000.000000"); - BOOST_TEST_EQ(to_string(T{210000}), "210000.000000"); - BOOST_TEST_EQ(to_string(T{2100000}), "2100000.000000"); - BOOST_TEST_EQ(to_string(T{21U, 6, true}), "-21000000.000000"); - BOOST_TEST_EQ(to_string(T{211U, 6, true}), "-211000000.000000"); - BOOST_TEST_EQ(to_string(T{2111U, 6, true}), "-2111000000.000000"); + BOOST_TEST_EQ(to_string(T{1}), "1"); + BOOST_TEST_EQ(to_string(T{10}), "10"); + BOOST_TEST_EQ(to_string(T{100}), "100"); + BOOST_TEST_EQ(to_string(T{1000}), "1000"); + BOOST_TEST_EQ(to_string(T{10000}), "10000"); + BOOST_TEST_EQ(to_string(T{210000}), "210000"); + BOOST_TEST_EQ(to_string(T{2100000}), "2100000"); + + BOOST_DECIMAL_IF_CONSTEXPR (detail::decimal_val_v > 32) + { + BOOST_TEST_EQ(to_string(T{21U, 6, true}), "-21000000"); + BOOST_TEST_EQ(to_string(T{211U, 6, true}), "-211000000"); + BOOST_TEST_EQ(to_string(T{2111U, 6, true}), "-2111000000"); + } + else + { + BOOST_TEST_EQ(to_string(T{21U, 6, true}), "-2.1e+07"); + BOOST_TEST_EQ(to_string(T{211U, 6, true}), "-2.11e+08"); + BOOST_TEST_EQ(to_string(T{2111U, 6, true}), "-2.111e+09"); + } BOOST_TEST_EQ(to_string(std::numeric_limits::infinity()), "inf"); BOOST_TEST_EQ(to_string(-std::numeric_limits::infinity()), "-inf"); @@ -35,6 +50,10 @@ void test() BOOST_TEST_EQ(to_string(-std::numeric_limits::signaling_NaN()), "-nan(snan)"); } +#ifdef _MSC_VER +#pragma warning(pop) +#endif + int main() { test(); From adf698b8add51f1f35082c8079adbc258280077f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 10:32:44 +0100 Subject: [PATCH 602/967] Add doc page for `to_string` and string constructor --- doc/modules/ROOT/nav.adoc | 1 + doc/modules/ROOT/pages/strings.adoc | 57 +++++++++++++++++++++++++++++ 2 files changed, 58 insertions(+) create mode 100644 doc/modules/ROOT/pages/strings.adoc diff --git a/doc/modules/ROOT/nav.adoc b/doc/modules/ROOT/nav.adoc index daf782869..fb981df25 100644 --- a/doc/modules/ROOT/nav.adoc +++ b/doc/modules/ROOT/nav.adoc @@ -43,6 +43,7 @@ * xref:cstdio.adoc[] * xref:functional.adoc[] * xref:limits.adoc[] +* xref:strings.adoc[] * xref:config.adoc[] ** xref:config.adoc#configuration_user[User Configuration] ** xref:config.adoc#configuration_automatic[Automatic Configuration] diff --git a/doc/modules/ROOT/pages/strings.adoc b/doc/modules/ROOT/pages/strings.adoc new file mode 100644 index 000000000..559b18d13 --- /dev/null +++ b/doc/modules/ROOT/pages/strings.adoc @@ -0,0 +1,57 @@ +//// +Copyright 2025 Matt Borland +Distributed under the Boost Software License, Version 1.0. +https://www.boost.org/LICENSE_1_0.txt +//// + +[#strings] += `` support +:idprefix: string_ + +== Construction from `std::string` and `std::string_view` + +Each of the decimal types have constructors that look like the following + +[source, c++] +---- +namespace boost { +namespace decimal { + +class decimal32_t +{ + + constexpr decimal32_t(const char* str) + + #ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW + inline decimal32_t::decimal32_t(const std::string& str); + #else + constexpr decimal32_t::decimal32_t(std::string_view str); + #endif +}; + +} // namespace decimal +} // namespace boost +---- + +These constructors allow for construction from C-strings, `std::string`, and from `std::string_view` when available. +They construct the value as though calling `from_chars` without a specified format. +If the input string is invalid these constructors will `throw std::runtime_error`. +If you are using a no exceptions environment instead of throwing the constructor will return a Quiet NAN. + +== `to_string` + +[source, c++] +---- +#include + +namespace boost { +namespace decimal { + +template +std::string to_string(const DecimalType value) + +} // namespace decimal +} // namespace boost +---- + +The `to_string` format returns a `std::string` of the decimal value formated as though using `to_chars` with general formatting, and no specified precision. From c048f1a2740b78fd63a907ffea5350ecd41cf30c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 12:13:28 +0100 Subject: [PATCH 603/967] Add sign enum class and wrapper class for compatibility --- .../decimal/detail/construction_sign.hpp | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 include/boost/decimal/detail/construction_sign.hpp diff --git a/include/boost/decimal/detail/construction_sign.hpp b/include/boost/decimal/detail/construction_sign.hpp new file mode 100644 index 000000000..3216931bd --- /dev/null +++ b/include/boost/decimal/detail/construction_sign.hpp @@ -0,0 +1,42 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_DETAIL_CONSTRUCTION_SIGN_HPP +#define BOOST_DECIMAL_DETAIL_CONSTRUCTION_SIGN_HPP + +namespace boost { +namespace decimal { + +enum class construction_sign : bool +{ + positive = false, + negative = true +}; + +namespace detail { + +class construction_sign_wrapper +{ +private: + + construction_sign value_; + +public: + + constexpr construction_sign_wrapper() noexcept = delete; + + constexpr construction_sign_wrapper(const construction_sign value) noexcept : value_{value} {} + + constexpr construction_sign_wrapper(const bool value) noexcept + : value_{ value ? construction_sign::negative : construction_sign::positive } {} + + constexpr operator bool() const noexcept { return static_cast(value_); } +}; + +} // namespace detail + +} // namespace decimal +} // namespace boost + +#endif // BOOST_DECIMAL_DETAIL_CONSTRUCTION_SIGN_HPP From 3048eddce8b2fbd665c912308ccc8f5b4f479d98 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 12:13:45 +0100 Subject: [PATCH 604/967] Change function signature to take the enum class --- include/boost/decimal/decimal32_t.hpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index eeb922d54..49947dff5 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -41,6 +41,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -297,7 +298,7 @@ BOOST_DECIMAL_EXPORT class decimal32_t final // NOLINT(cppcoreguidelines-special #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal32_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; + constexpr decimal32_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign = construction_sign::positive) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -651,11 +652,12 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, bool is_negative) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) +constexpr decimal32_t::decimal32_t(T1 coeff, T2 exp, const detail::construction_sign_wrapper resultant_sign) noexcept // NOLINT(readability-function-cognitive-complexity,misc-no-recursion) { static_assert(detail::is_integral_v, "Coefficient must be an integer"); static_assert(detail::is_integral_v, "Exponent must be an integer"); + const auto is_negative {static_cast(resultant_sign)}; bits_ = is_negative ? detail::d32_sign_mask : UINT32_C(0); // If the coeff is not in range, make it so From b0d3dda83f3819cab081ccad9b2254c42bd25895 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 12:16:11 +0100 Subject: [PATCH 605/967] Remove bool from basic construction example --- examples/basic_construction.cpp | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/examples/basic_construction.cpp b/examples/basic_construction.cpp index 2f9cc1119..c183dccd2 100644 --- a/examples/basic_construction.cpp +++ b/examples/basic_construction.cpp @@ -2,17 +2,23 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#include +#include +#include +#include #include #include int main() { - using namespace boost::decimal; + using boost::decimal::decimal32_t; + using boost::decimal::decimal64_t; + using boost::decimal::construction_sign; + using boost::decimal::isinf; + using boost::decimal::isnan; constexpr decimal32_t val_1 {100}; // Construction from an integer constexpr decimal32_t val_2 {10, 1}; // Construction from a signed integer and exponent - constexpr decimal32_t val_3 {1U, 2, false}; // Construction from an unsigned integer, exponent, and sign + constexpr decimal32_t val_3 {1U, 2, construction_sign::negative}; // Construction from an unsigned integer, exponent, and sign std::cout << "Val_1: " << val_1 << '\n' << "Val_2: " << val_2 << '\n' From 34f7e1584f121aaa4aaf4b5c8c77bb5eb8fbde81 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 12:19:08 +0100 Subject: [PATCH 606/967] Add enum class to docs and remove bools from examples --- doc/modules/ROOT/pages/basics.adoc | 18 +++++++++++++++--- doc/modules/ROOT/pages/examples.adoc | 2 +- 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/doc/modules/ROOT/pages/basics.adoc b/doc/modules/ROOT/pages/basics.adoc index f1016b185..a7882f664 100644 --- a/doc/modules/ROOT/pages/basics.adoc +++ b/doc/modules/ROOT/pages/basics.adoc @@ -16,21 +16,33 @@ Every decimal type can be constructed in a few ways: [source, c++] ---- +namespace boost { +namespace decimal { + +enum class construction_sign +{ + negative, + positive +}; + template -constexpr decimal32_t(UnsignedInteger coefficient, Integer exponent, bool is_negative = false) noexcept; +constexpr decimal32_t(UnsignedInteger coefficient, Integer exponent, construction_sign resultant_sign = construction_sign::positive) noexcept; template constexpr decimal32_t(SignedInteger coefficient, Integer exponent) noexcept; + +} // namespace decimal +} // namespace boost ---- As you can see you are either allowed to pass a signed integer, or specify the signedness of the resulting number, but not both. -This is designed to reduce confusion (e.g. what would be the resulting sign of `{-3, 0, true}`?) +This is designed to reduce confusion (e.g. what would be the resulting sign of `{-3, 0, construction_sign::negative}`?) [souce, c++] ---- boost::decimal::decimal32_t a {1, 1}; // constructs 1e1 = 10 boost::decimal::decimal32_t b {-2, -1}; // constructs -2e-2 or -0.2 -boost::decimal::decimal32_t c {2U, -1, true}; // also constructs -2e-1 or -0.2 (Note: The coefficient must be an unsigned type) +boost::decimal::decimal32_t c {2U, -1, construction_sign::negative}; // also constructs -2e-1 or -0.2 (Note: The coefficient must be an unsigned type) boost::decimal::decimal32_t e {5, 5}; // constructs 5x10^5 boost::decimal::decimal32_t f {1234, -3} // constructs 1.234 or 1234x10^-3 ---- diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index bcd1a0850..15915c3a8 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -26,7 +26,7 @@ int main() std::cout << sum << std::endl; // prints 0.3 - const boost::decimal::decimal32_t neg_a {2, -1, true}; // Constructs the number -0.2 + const boost::decimal::decimal32_t neg_a {2, -1, construction_sign::negative}; // Constructs the number -0.2 sum += neg_a; From 59ed8dd5543a927ea7eaa999e016d47ae35a0e5d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 13:08:14 +0100 Subject: [PATCH 607/967] Use sign enum is the remaining constructors --- include/boost/decimal/decimal128_t.hpp | 6 ++++-- include/boost/decimal/decimal64_t.hpp | 6 ++++-- include/boost/decimal/decimal_fast128_t.hpp | 6 ++++-- include/boost/decimal/decimal_fast32_t.hpp | 6 ++++-- include/boost/decimal/decimal_fast64_t.hpp | 6 ++++-- 5 files changed, 20 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index d030e6ae0..7d1a65495 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -40,6 +40,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -272,7 +273,7 @@ BOOST_DECIMAL_EXPORT class decimal128_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal128_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; + constexpr decimal128_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign = construction_sign::positive) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -730,8 +731,9 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, bool is_negative) noexcept +constexpr decimal128_t::decimal128_t(T1 coeff, T2 exp, const detail::construction_sign_wrapper resultant_sign) noexcept { + const auto is_negative {static_cast(resultant_sign)}; bits_.high = is_negative ? detail::d128_sign_mask : UINT64_C(0); // If the coeff is not in range make it so diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index f456cfa07..d0f8c1eb0 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -43,6 +43,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -335,7 +336,7 @@ BOOST_DECIMAL_EXPORT class decimal64_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal64_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; + constexpr decimal64_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign = construction_sign::positive) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -650,8 +651,9 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, bool is_negative) noexcept +constexpr decimal64_t::decimal64_t(T1 coeff, T2 exp, const detail::construction_sign_wrapper resultant_sign) noexcept { + const auto is_negative {static_cast(resultant_sign)}; bits_ = is_negative ? detail::d64_sign_mask : UINT64_C(0); // If the coeff is not in range, make it so diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index d2c523638..6dee7f594 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -40,6 +40,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -215,7 +216,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal_fast128_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; + constexpr decimal_fast128_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -489,12 +490,13 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, bool is_negative) noexcept +constexpr decimal_fast128_t::decimal_fast128_t(T1 coeff, T2 exp, const detail::construction_sign_wrapper resultant_sign) noexcept { using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; minimum_coefficient_size min_coeff {coeff}; + const auto is_negative {static_cast(resultant_sign)}; sign_ = is_negative; // Normalize the significand in the constructor, so we don't have diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 6b220669e..ebf54254f 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -41,6 +41,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -211,7 +212,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final constexpr decimal_fast32_t() noexcept = default; template && detail::is_integral_v, bool> = true> - constexpr decimal_fast32_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; + constexpr decimal_fast32_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign = construction_sign::positive) noexcept; template && detail::is_integral_v, bool> = true> constexpr decimal_fast32_t(T1, T2, bool) noexcept { static_assert(detail::is_unsigned_v, "Construction from signed integer, exponent, and sign is ambiguous, so it is disallowed. You must use an Unsigned Integer for the coefficient to construct from {coefficient, exponent, sign}"); } @@ -479,12 +480,13 @@ BOOST_DECIMAL_EXPORT class decimal_fast32_t final }; template && detail::is_integral_v, bool>> -constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, bool is_negative) noexcept +constexpr decimal_fast32_t::decimal_fast32_t(T1 coeff, T2 exp, const detail::construction_sign_wrapper resultant_sign) noexcept { using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; minimum_coefficient_size min_coeff {coeff}; + const auto is_negative {static_cast(resultant_sign)}; sign_ = is_negative; // Normalize in the constructor, so we never have to worry about it again diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 0223c71a9..be317d77f 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -41,6 +41,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -222,7 +223,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast64_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal_fast64_t(T1 coeff, T2 exp, bool is_negative = false) noexcept; + constexpr decimal_fast64_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign = construction_sign::positive) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -484,12 +485,13 @@ template #else template && detail::is_integral_v, bool>> #endif -constexpr decimal_fast64_t::decimal_fast64_t(T1 coeff, T2 exp, bool is_negative) noexcept +constexpr decimal_fast64_t::decimal_fast64_t(T1 coeff, T2 exp, const detail::construction_sign_wrapper resultant_sign) noexcept { using minimum_coefficient_size = std::conditional_t<(sizeof(T1) > sizeof(significand_type)), T1, significand_type>; minimum_coefficient_size min_coeff {coeff}; + const auto is_negative {static_cast(resultant_sign)}; sign_ = is_negative; // Normalize the value, so we don't have to worry about it with operations From 0b2ca35cb0547e823dbfab7feaabbe1a9e2197be Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 13:12:16 +0100 Subject: [PATCH 608/967] Bulk refactoring of constants and header inclusions as needed --- include/boost/decimal/decimal128_t.hpp | 2 +- include/boost/decimal/decimal32_t.hpp | 2 +- include/boost/decimal/decimal64_t.hpp | 2 +- include/boost/decimal/decimal_fast128_t.hpp | 4 +- include/boost/decimal/decimal_fast32_t.hpp | 2 +- include/boost/decimal/decimal_fast64_t.hpp | 2 +- include/boost/decimal/detail/cmath/erf.hpp | 72 +++++++++--------- include/boost/decimal/detail/cmath/floor.hpp | 3 +- .../decimal/detail/cmath/impl/asin_impl.hpp | 73 ++++++++++--------- .../decimal/detail/cmath/impl/cos_impl.hpp | 21 +++--- .../decimal/detail/cmath/impl/sin_impl.hpp | 53 +++++++------- 11 files changed, 120 insertions(+), 116 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index 7d1a65495..cc53a0ae9 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -2256,7 +2256,7 @@ class numeric_limits_impl128 // Member functions static constexpr auto (min) () -> boost::decimal::decimal128_t { return {UINT32_C(1), min_exponent}; } static constexpr auto (max) () -> boost::decimal::decimal128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, true}; } + static constexpr auto lowest () -> boost::decimal::decimal128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, construction_sign::negative}; } static constexpr auto epsilon () -> boost::decimal::decimal128_t { return {UINT32_C(1), -digits + 1}; } static constexpr auto round_error () -> boost::decimal::decimal128_t { return epsilon(); } static constexpr auto infinity () -> boost::decimal::decimal128_t { return boost::decimal::from_bits(boost::decimal::detail::d128_inf_mask); } diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 49947dff5..b30cb759c 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -2324,7 +2324,7 @@ class numeric_limits_impl32 // Member functions static constexpr auto (min) () -> boost::decimal::decimal32_t { return {UINT32_C(1), min_exponent}; } static constexpr auto (max) () -> boost::decimal::decimal32_t { return {boost::decimal::detail::d32_max_significand_value, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal32_t { return {boost::decimal::detail::d32_max_significand_value, max_exponent - digits + 1, true}; } + static constexpr auto lowest () -> boost::decimal::decimal32_t { return {boost::decimal::detail::d32_max_significand_value, max_exponent - digits + 1, construction_sign::negative}; } static constexpr auto epsilon () -> boost::decimal::decimal32_t { return {UINT32_C(1), -digits + 1}; } static constexpr auto round_error () -> boost::decimal::decimal32_t { return epsilon(); } static constexpr auto infinity () -> boost::decimal::decimal32_t { return boost::decimal::from_bits(boost::decimal::detail::d32_inf_mask); } diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index d0f8c1eb0..59d2cf511 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -2233,7 +2233,7 @@ class numeric_limits_impl64 // Member functions static constexpr auto (min) () -> boost::decimal::decimal64_t { return {UINT32_C(1), min_exponent}; } static constexpr auto (max) () -> boost::decimal::decimal64_t { return {boost::decimal::detail::d64_max_significand_value, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal64_t { return {boost::decimal::detail::d64_max_significand_value, max_exponent - digits + 1, true}; } + static constexpr auto lowest () -> boost::decimal::decimal64_t { return {boost::decimal::detail::d64_max_significand_value, max_exponent - digits + 1, construction_sign::negative}; } static constexpr auto epsilon () -> boost::decimal::decimal64_t { return {UINT32_C(1), -digits + 1}; } static constexpr auto round_error () -> boost::decimal::decimal64_t { return epsilon(); } static constexpr auto infinity () -> boost::decimal::decimal64_t { return boost::decimal::from_bits(boost::decimal::detail::d64_inf_mask); } diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 6dee7f594..1e36758b1 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -216,7 +216,7 @@ BOOST_DECIMAL_EXPORT class decimal_fast128_t final #else template && detail::is_integral_v, bool> = true> #endif - constexpr decimal_fast128_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign) noexcept; + constexpr decimal_fast128_t(T1 coeff, T2 exp, detail::construction_sign_wrapper resultant_sign = construction_sign::positive) noexcept; #ifdef BOOST_DECIMAL_HAS_CONCEPTS template @@ -1618,7 +1618,7 @@ class numeric_limits_impl128f // Member functions static constexpr auto (min) () -> boost::decimal::decimal_fast128_t { return {UINT32_C(1), min_exponent}; } static constexpr auto (max) () -> boost::decimal::decimal_fast128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal_fast128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, true}; } + static constexpr auto lowest () -> boost::decimal::decimal_fast128_t { return {boost::int128::uint128_t{UINT64_C(0b1111011010000100110111110101011011000011111000000), UINT64_C(0b0011011110001101100011100110001111111111111111111111111111111111)}, max_exponent - digits + 1, construction_sign::negative}; } static constexpr auto epsilon () -> boost::decimal::decimal_fast128_t { return {UINT32_C(1), -digits + 1}; } static constexpr auto round_error () -> boost::decimal::decimal_fast128_t { return epsilon(); } static constexpr auto infinity () -> boost::decimal::decimal_fast128_t { return boost::decimal::direct_init_d128(boost::decimal::detail::d128_fast_inf, 0, false); } diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index ebf54254f..75e3656c6 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -1580,7 +1580,7 @@ class numeric_limits_impl32f // Member functions static constexpr auto (min) () -> boost::decimal::decimal_fast32_t { return {UINT32_C(1), min_exponent}; } static constexpr auto (max) () -> boost::decimal::decimal_fast32_t { return {UINT32_C(9'999'999), max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal_fast32_t { return {UINT32_C(9'999'999), max_exponent - digits + 1, true}; } + static constexpr auto lowest () -> boost::decimal::decimal_fast32_t { return {UINT32_C(9'999'999), max_exponent - digits + 1, construction_sign::negative}; } static constexpr auto epsilon () -> boost::decimal::decimal_fast32_t { return {UINT32_C(1), -digits + 1}; } static constexpr auto round_error () -> boost::decimal::decimal_fast32_t { return epsilon(); } static constexpr auto infinity () -> boost::decimal::decimal_fast32_t { return boost::decimal::direct_init(boost::decimal::detail::d32_fast_inf, UINT8_C((0))); } diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index be317d77f..15953f9f5 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -1554,7 +1554,7 @@ class numeric_limits_impl64f // Member functions static constexpr auto (min) () -> boost::decimal::decimal_fast64_t { return {UINT32_C(1), min_exponent}; } static constexpr auto (max) () -> boost::decimal::decimal_fast64_t { return {UINT64_C(9'999'999'999'999'999), max_exponent - digits + 1}; } - static constexpr auto lowest () -> boost::decimal::decimal_fast64_t { return {UINT64_C(9'999'999'999'999'999), max_exponent - digits + 1, true}; } + static constexpr auto lowest () -> boost::decimal::decimal_fast64_t { return {UINT64_C(9'999'999'999'999'999), max_exponent - digits + 1, construction_sign::negative}; } static constexpr auto epsilon () -> boost::decimal::decimal_fast64_t { return {UINT32_C(1), -digits + 1}; } static constexpr auto round_error () -> boost::decimal::decimal_fast64_t { return epsilon(); } static constexpr auto infinity () -> boost::decimal::decimal_fast64_t { return boost::decimal::direct_init_d64( diff --git a/include/boost/decimal/detail/cmath/erf.hpp b/include/boost/decimal/detail/cmath/erf.hpp index df9bf00ee..088e0bf67 100644 --- a/include/boost/decimal/detail/cmath/erf.hpp +++ b/include/boost/decimal/detail/cmath/erf.hpp @@ -150,11 +150,11 @@ constexpr auto erf_calc_impl(const T z, bool invert) noexcept -> T constexpr T Y {UINT64_C(1044948577880859375), -18}; constexpr std::array P = { T{UINT64_C(8343058921465319890), -20}, - T{UINT64_C(3380972830755654137), -19, true}, - T{UINT64_C(5096027344060672046), -20, true}, - T{UINT64_C(9049063461585377944), -21, true}, - T{UINT64_C(4894686514647986692), -22, true}, - T{UINT64_C(2003056263661518778), -23, true} + T{UINT64_C(3380972830755654137), -19, construction_sign::negative}, + T{UINT64_C(5096027344060672046), -20, construction_sign::negative}, + T{UINT64_C(9049063461585377944), -21, construction_sign::negative}, + T{UINT64_C(4894686514647986692), -22, construction_sign::negative}, + T{UINT64_C(2003056263661518778), -23, construction_sign::negative} }; constexpr std::array Q = { T{UINT64_C(1), 0}, @@ -183,7 +183,7 @@ constexpr auto erf_calc_impl(const T z, bool invert) noexcept -> T // Maximum Relative Change in Control Points: 5.110e-03 constexpr T Y {UINT64_C(4059357643127441406), -19}; constexpr std::array P = { - T{UINT64_C(9809059221628120317), -20, true}, + T{UINT64_C(9809059221628120317), -20, construction_sign::negative}, T{UINT64_C(1599890899229691413), -19}, T{UINT64_C(2223598216199357124), -19}, T{UINT64_C(1273039217035773623), -19}, @@ -214,7 +214,7 @@ constexpr auto erf_calc_impl(const T z, bool invert) noexcept -> T constexpr T Y {UINT64_C(5067281723022460937), -19}; constexpr std::array P = { - T{UINT64_C(2435004762076984022), -20, true}, + T{UINT64_C(2435004762076984022), -20, construction_sign::negative}, T{UINT64_C(3435226879356714513), -20}, T{UINT64_C(5054208243055449495), -20}, T{UINT64_C(2574793259177573882), -20}, @@ -277,13 +277,13 @@ constexpr auto erf_calc_impl(const T z, bool invert) noexcept -> T constexpr std::array P = { T{UINT64_C(5934387930080502141), -21}, T{UINT64_C(2806662310090897139), -20}, - T{UINT64_C(1415978352045830500), -19, true}, - T{UINT64_C(9780882011543005488), -19, true}, - T{UINT64_C(5473515277960120494), -18, true}, - T{UINT64_C(1386773046602453266), -17, true}, - T{UINT64_C(2712749487205398217), -17, true}, - T{UINT64_C(2925451527470094615), -17, true}, - T{UINT64_C(1688657744997996769), -17, true} + T{UINT64_C(1415978352045830500), -19, construction_sign::negative}, + T{UINT64_C(9780882011543005488), -19, construction_sign::negative}, + T{UINT64_C(5473515277960120494), -18, construction_sign::negative}, + T{UINT64_C(1386773046602453266), -17, construction_sign::negative}, + T{UINT64_C(2712749487205398217), -17, construction_sign::negative}, + T{UINT64_C(2925451527470094615), -17, construction_sign::negative}, + T{UINT64_C(1688657744997996769), -17, construction_sign::negative} }; constexpr std::array Q = { T{UINT64_C(1), 0}, @@ -380,13 +380,13 @@ constexpr auto erf_calc_impl(const decimal128_t z, bool invert) no constexpr decimal128_t Y {UINT64_C(10841522216796875), -16}; constexpr std::array P = { decimal128_t{int128::uint128_t{UINT64_C(239754751511176), UINT64_C(15346977608939294094)}, -35}, - decimal128_t{int128::uint128_t{UINT64_C(192712955706190), UINT64_C(2786476198819993080)}, -34, true}, - decimal128_t{int128::uint128_t{UINT64_C(315600174339923), UINT64_C(3061015393610667132)}, -35, true}, - decimal128_t{int128::uint128_t{UINT64_C(61091917605891), UINT64_C(1019303663574361383)}, -35, true}, - decimal128_t{int128::uint128_t{UINT64_C(436787460032112), UINT64_C(1788731756814597798)}, -37, true}, - decimal128_t{int128::uint128_t{UINT64_C(306994537534154), UINT64_C(5857517254794866796)}, -38, true}, - decimal128_t{int128::uint128_t{UINT64_C(91970165438019), UINT64_C(5861580289485811316)}, -39, true}, - decimal128_t{int128::uint128_t{UINT64_C(186725770436288), UINT64_C(13306862545778890572)}, -41, true} + decimal128_t{int128::uint128_t{UINT64_C(192712955706190), UINT64_C(2786476198819993080)}, -34, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(315600174339923), UINT64_C(3061015393610667132)}, -35, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(61091917605891), UINT64_C(1019303663574361383)}, -35, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(436787460032112), UINT64_C(1788731756814597798)}, -37, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(306994537534154), UINT64_C(5857517254794866796)}, -38, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(91970165438019), UINT64_C(5861580289485811316)}, -39, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(186725770436288), UINT64_C(13306862545778890572)}, -41, construction_sign::negative} }; constexpr std::array Q = { decimal128_t{UINT64_C(1)}, @@ -418,7 +418,7 @@ constexpr auto erf_calc_impl(const decimal128_t z, bool invert) no // Maximum Relative Change in Control Points: 6.127e-05 constexpr decimal128_t Y {int128::uint128_t{UINT64_C(201595030518654), UINT64_C(473630177736155136)}, -34}; constexpr std::array P = { - decimal128_t{int128::uint128_t{UINT64_C(347118283305744), UINT64_C(13376242280388530596)}, -35, true}, + decimal128_t{int128::uint128_t{UINT64_C(347118283305744), UINT64_C(13376242280388530596)}, -35, construction_sign::negative}, decimal128_t{int128::uint128_t{UINT64_C(108837567018829), UINT64_C(8949668339020089396)}, -34}, decimal128_t{int128::uint128_t{UINT64_C(205156638136972), UINT64_C(8479374702376111038)}, -34}, decimal128_t{int128::uint128_t{UINT64_C(165456838044201), UINT64_C(8069456678105518694)}, -34}, @@ -453,7 +453,7 @@ constexpr auto erf_calc_impl(const decimal128_t z, bool invert) no // Maximum Relative Change in Control Points: 6.104e-05 constexpr decimal128_t Y {int128::uint128_t{UINT64_C(247512601803296), UINT64_C(15871045498809073664)}, -34}; constexpr std::array P = { - decimal128_t{int128::uint128_t{UINT64_C(157190807096733), UINT64_C(3137315625382477952)}, -35, true}, + decimal128_t{int128::uint128_t{UINT64_C(157190807096733), UINT64_C(3137315625382477952)}, -35, construction_sign::negative}, decimal128_t{int128::uint128_t{UINT64_C(470641968793799), UINT64_C(4414359042974488606)}, -35}, decimal128_t{int128::uint128_t{UINT64_C(91817523159857), UINT64_C(7399250419088684648)}, -34}, decimal128_t{int128::uint128_t{UINT64_C(72372915581218), UINT64_C(10309284290091665052)}, -34}, @@ -487,7 +487,7 @@ constexpr auto erf_calc_impl(const decimal128_t z, bool invert) no // Max Error found at long double precision = 1.998462e-35 constexpr decimal128_t Y {int128::uint128_t{UINT64_C(272406602338080), UINT64_C(4210402105957662720)}, -34}; constexpr std::array P = { - decimal128_t{int128::uint128_t{UINT64_C(109088969685101), UINT64_C(16218967400415836944)}, -35, true}, + decimal128_t{int128::uint128_t{UINT64_C(109088969685101), UINT64_C(16218967400415836944)}, -35, construction_sign::negative}, decimal128_t{int128::uint128_t{UINT64_C(179904028726584), UINT64_C(15631322379863663306)}, -35}, decimal128_t{int128::uint128_t{UINT64_C(388449429341863), UINT64_C(3427022958736033442)}, -35}, decimal128_t{int128::uint128_t{UINT64_C(295897921010371), UINT64_C(1587344243601439264)}, -35}, @@ -523,7 +523,7 @@ constexpr auto erf_calc_impl(const decimal128_t z, bool invert) no // Max Error found at long double precision = 5.794737e-36 constexpr decimal128_t Y {int128::uint128_t{UINT64_C(286754050062812), UINT64_C(9099170110843895808)}, -34}; constexpr std::array P = { - decimal128_t{int128::uint128_t{UINT64_C(489057861995043), UINT64_C(13133699014237994112)}, -36, true}, + decimal128_t{int128::uint128_t{UINT64_C(489057861995043), UINT64_C(13133699014237994112)}, -36, construction_sign::negative}, decimal128_t{int128::uint128_t{UINT64_C(78716949829450), UINT64_C(16506161309933484600)}, -35}, decimal128_t{int128::uint128_t{UINT64_C(163541727676567), UINT64_C(6172848388919604508)}, -35}, decimal128_t{int128::uint128_t{UINT64_C(116849098118354), UINT64_C(5575376344146644276)}, -35}, @@ -558,7 +558,7 @@ constexpr auto erf_calc_impl(const decimal128_t z, bool invert) no // Max Error found at long double precision = 1.747062e-36 constexpr decimal128_t Y {int128::uint128_t{UINT64_C(292937225141646), UINT64_C(6920050031251800064)}, -34}; constexpr std::array P = { - decimal128_t{int128::uint128_t{UINT64_C(182706965924257), UINT64_C(1687510779571187718)}, -36, true}, + decimal128_t{int128::uint128_t{UINT64_C(182706965924257), UINT64_C(1687510779571187718)}, -36, construction_sign::negative}, decimal128_t{int128::uint128_t{UINT64_C(56892448168985), UINT64_C(572440462241151398)}, -35}, decimal128_t{int128::uint128_t{UINT64_C(80518338580783), UINT64_C(5160816315849708842)}, -35}, decimal128_t{int128::uint128_t{UINT64_C(442730178280838), UINT64_C(9281603077550627672)}, -36}, @@ -698,16 +698,16 @@ constexpr auto erf_calc_impl(const decimal128_t z, bool invert) no constexpr std::array P = { decimal128_t{int128::uint128_t{UINT64_C(499232842962978), UINT64_C(8830380466473645912)}, -37}, decimal128_t{int128::uint128_t{UINT64_C(174252455201786), UINT64_C(2479322227425103044)}, -36}, - decimal128_t{int128::uint128_t{UINT64_C(135772070143446), UINT64_C(11134505343181509494)}, -34, true}, - decimal128_t{int128::uint128_t{UINT64_C(491581404144094), UINT64_C(17408157071053090076)}, -34, true}, - decimal128_t{int128::uint128_t{UINT64_C(483680789016642), UINT64_C(16561429108077906378)}, -33, true}, - decimal128_t{int128::uint128_t{UINT64_C(118068225278210), UINT64_C(1054524085213991420)}, -32, true}, - decimal128_t{int128::uint128_t{UINT64_C(494099073316133), UINT64_C(5874532072246990782)}, -32, true}, - decimal128_t{int128::uint128_t{UINT64_C(78131897092350), UINT64_C(2017084479481280073)}, -31, true}, - decimal128_t{int128::uint128_t{UINT64_C(170135756926931), UINT64_C(10167058340138167254)}, -31, true}, - decimal128_t{int128::uint128_t{UINT64_C(148055281207309), UINT64_C(5898340572591612296)}, -31, true}, - decimal128_t{int128::uint128_t{UINT64_C(147262609119790), UINT64_C(18318474967693923790)}, -31, true}, - decimal128_t{int128::uint128_t{UINT64_C(325548278155557), UINT64_C(11031073479106502338)}, -32, true} + decimal128_t{int128::uint128_t{UINT64_C(135772070143446), UINT64_C(11134505343181509494)}, -34, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(491581404144094), UINT64_C(17408157071053090076)}, -34, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(483680789016642), UINT64_C(16561429108077906378)}, -33, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(118068225278210), UINT64_C(1054524085213991420)}, -32, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(494099073316133), UINT64_C(5874532072246990782)}, -32, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(78131897092350), UINT64_C(2017084479481280073)}, -31, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(170135756926931), UINT64_C(10167058340138167254)}, -31, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(148055281207309), UINT64_C(5898340572591612296)}, -31, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(147262609119790), UINT64_C(18318474967693923790)}, -31, construction_sign::negative}, + decimal128_t{int128::uint128_t{UINT64_C(325548278155557), UINT64_C(11031073479106502338)}, -32, construction_sign::negative} }; constexpr std::array Q = { decimal128_t{1}, diff --git a/include/boost/decimal/detail/cmath/floor.hpp b/include/boost/decimal/detail/cmath/floor.hpp index 14ec7d72e..730922660 100644 --- a/include/boost/decimal/detail/cmath/floor.hpp +++ b/include/boost/decimal/detail/cmath/floor.hpp @@ -14,6 +14,7 @@ #include #include "../int128.hpp" #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -30,7 +31,7 @@ constexpr auto floor BOOST_DECIMAL_PREVENT_MACRO_SUBSTITUTION (const T val) noex using DivType = typename T::significand_type; constexpr T zero {0, 0}; - constexpr T neg_one {1U, 0, true}; + constexpr T neg_one {1U, 0, construction_sign::negative}; const auto fp {fpclassify(val)}; switch (fp) diff --git a/include/boost/decimal/detail/cmath/impl/asin_impl.hpp b/include/boost/decimal/detail/cmath/impl/asin_impl.hpp index f14dd681b..8d120442c 100644 --- a/include/boost/decimal/detail/cmath/impl/asin_impl.hpp +++ b/include/boost/decimal/detail/cmath/impl/asin_impl.hpp @@ -9,6 +9,7 @@ #include #include "../../int128.hpp" #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -43,9 +44,9 @@ struct asin_table_imp // Estimated max error: 7.3651618860008751e-11 static constexpr d32_coeffs_t d32_coeffs = {{ decimal32_t {UINT64_C(263887099755925), -15}, - decimal32_t {UINT64_C(43491393212832818), -17, true}, + decimal32_t {UINT64_C(43491393212832818), -17, construction_sign::negative}, decimal32_t {UINT64_C(38559884786102105), -17}, - decimal32_t {UINT64_C(13977130653211101), -17, true}, + decimal32_t {UINT64_C(13977130653211101), -17, construction_sign::negative}, decimal32_t {UINT64_C(54573213517731915), -18}, decimal32_t {UINT64_C(64851743877986187), -18}, decimal32_t {UINT64_C(11606701725692841), -19}, @@ -57,9 +58,9 @@ struct asin_table_imp static constexpr d32_fast_coeffs_t d32_fast_coeffs = {{ decimal_fast32_t {UINT64_C(263887099755925), -15}, - decimal_fast32_t {UINT64_C(43491393212832818), -17, true}, + decimal_fast32_t {UINT64_C(43491393212832818), -17, construction_sign::negative}, decimal_fast32_t {UINT64_C(38559884786102105), -17}, - decimal_fast32_t {UINT64_C(13977130653211101), -17, true}, + decimal_fast32_t {UINT64_C(13977130653211101), -17, construction_sign::negative}, decimal_fast32_t {UINT64_C(54573213517731915), -18}, decimal_fast32_t {UINT64_C(64851743877986187), -18}, decimal_fast32_t {UINT64_C(11606701725692841), -19}, @@ -73,15 +74,15 @@ struct asin_table_imp // Estimated max error: 6.0872797932519911178133457751215133e-19 static constexpr d64_coeffs_t d64_coeffs = {{ decimal64_t {UINT64_C(2201841632531125594), -18}, - decimal64_t {UINT64_C(9319383818485265142), -18, true}, + decimal64_t {UINT64_C(9319383818485265142), -18, construction_sign::negative}, decimal64_t {UINT64_C(1876826158920611297), -17}, - decimal64_t {UINT64_C(2351630530022519158), -17, true}, + decimal64_t {UINT64_C(2351630530022519158), -17, construction_sign::negative}, decimal64_t {UINT64_C(2046603318375014621), -17}, - decimal64_t {UINT64_C(1304427904865204196), -17, true}, + decimal64_t {UINT64_C(1304427904865204196), -17, construction_sign::negative}, decimal64_t {UINT64_C(6308794339076719731), -18}, - decimal64_t {UINT64_C(2333806156857836980), -18, true}, + decimal64_t {UINT64_C(2333806156857836980), -18, construction_sign::negative}, decimal64_t {UINT64_C(6826985955727270693), -19}, - decimal64_t {UINT64_C(1326415745606167277), -19, true}, + decimal64_t {UINT64_C(1326415745606167277), -19, construction_sign::negative}, decimal64_t {UINT64_C(2747750823768175476), -20}, decimal64_t {UINT64_C(2660509753516203115), -20}, decimal64_t {UINT64_C(3977122944636320545), -22}, @@ -97,15 +98,15 @@ struct asin_table_imp static constexpr d64_fast_coeffs_t d64_fast_coeffs = {{ decimal_fast64_t {UINT64_C(2201841632531125594), -18}, - decimal_fast64_t {UINT64_C(9319383818485265142), -18, true}, + decimal_fast64_t {UINT64_C(9319383818485265142), -18, construction_sign::negative}, decimal_fast64_t {UINT64_C(1876826158920611297), -17}, - decimal_fast64_t {UINT64_C(2351630530022519158), -17, true}, + decimal_fast64_t {UINT64_C(2351630530022519158), -17, construction_sign::negative}, decimal_fast64_t {UINT64_C(2046603318375014621), -17}, - decimal_fast64_t {UINT64_C(1304427904865204196), -17, true}, + decimal_fast64_t {UINT64_C(1304427904865204196), -17, construction_sign::negative}, decimal_fast64_t {UINT64_C(6308794339076719731), -18}, - decimal_fast64_t {UINT64_C(2333806156857836980), -18, true}, + decimal_fast64_t {UINT64_C(2333806156857836980), -18, construction_sign::negative}, decimal_fast64_t {UINT64_C(6826985955727270693), -19}, - decimal_fast64_t {UINT64_C(1326415745606167277), -19, true}, + decimal_fast64_t {UINT64_C(1326415745606167277), -19, construction_sign::negative}, decimal_fast64_t {UINT64_C(2747750823768175476), -20}, decimal_fast64_t {UINT64_C(2660509753516203115), -20}, decimal_fast64_t {UINT64_C(3977122944636320545), -22}, @@ -123,27 +124,27 @@ struct asin_table_imp // Estimated max error: 1.084502473818005718919720519483941e-34 static constexpr d128_coeffs_t d128_coeffs = {{ decimal128_t {int128::uint128_t{UINT64_C(236367828732266), UINT64_C(4865873281479238114)}, -31}, - decimal128_t {int128::uint128_t{UINT64_C(218966359248756), UINT64_C(1393338271545593644)}, -30, true}, + decimal128_t {int128::uint128_t{UINT64_C(218966359248756), UINT64_C(1393338271545593644)}, -30, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(98104038983693), UINT64_C(4819646069944316372)}, -29}, - decimal128_t {int128::uint128_t{UINT64_C(282853615727310), UINT64_C(10104044375051504970)}, -29, true}, + decimal128_t {int128::uint128_t{UINT64_C(282853615727310), UINT64_C(10104044375051504970)}, -29, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(58930987436658), UINT64_C(3829646337759276014)}, -28}, - decimal128_t {int128::uint128_t{UINT64_C(94467942291578), UINT64_C(14212526794757587650)}, -28, true}, + decimal128_t {int128::uint128_t{UINT64_C(94467942291578), UINT64_C(14212526794757587650)}, -28, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(121156109355190), UINT64_C(6171523396929956760)}, -28}, - decimal128_t {int128::uint128_t{UINT64_C(127640043209581), UINT64_C(8369619306382995314)}, -28, true}, + decimal128_t {int128::uint128_t{UINT64_C(127640043209581), UINT64_C(8369619306382995314)}, -28, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(112556984011870), UINT64_C(14401172681696800280)}, -28}, - decimal128_t {int128::uint128_t{UINT64_C(84240716950351), UINT64_C(10152945328926072964)}, -28, true}, + decimal128_t {int128::uint128_t{UINT64_C(84240716950351), UINT64_C(10152945328926072964)}, -28, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(540724366020485), UINT64_C(8813105586620168570)}, -29}, - decimal128_t {int128::uint128_t{UINT64_C(300054630162323), UINT64_C(4862687399308912842)}, -29, true}, + decimal128_t {int128::uint128_t{UINT64_C(300054630162323), UINT64_C(4862687399308912842)}, -29, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(144827005285082), UINT64_C(4790810090757542758)}, -29}, - decimal128_t {int128::uint128_t{UINT64_C(61085784025333), UINT64_C(3908625641731373429)}, -29, true}, + decimal128_t {int128::uint128_t{UINT64_C(61085784025333), UINT64_C(3908625641731373429)}, -29, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(225929173229512), UINT64_C(18404095637827467688)}, -30}, - decimal128_t {int128::uint128_t{UINT64_C(73452862511516), UINT64_C(2655967943189644664)}, -30, true}, + decimal128_t {int128::uint128_t{UINT64_C(73452862511516), UINT64_C(2655967943189644664)}, -30, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(210254502661653), UINT64_C(14174199201997297032)}, -31}, - decimal128_t {int128::uint128_t{UINT64_C(530269670900176), UINT64_C(3023877239296322874)}, -32, true}, + decimal128_t {int128::uint128_t{UINT64_C(530269670900176), UINT64_C(3023877239296322874)}, -32, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(117870705400334), UINT64_C(8785618254907029456)}, -32}, - decimal128_t {int128::uint128_t{UINT64_C(230285265351731), UINT64_C(8107756519153341434)}, -33, true}, + decimal128_t {int128::uint128_t{UINT64_C(230285265351731), UINT64_C(8107756519153341434)}, -33, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(397318429350031), UINT64_C(567549410172969484)}, -34}, - decimal128_t {int128::uint128_t{UINT64_C(54772616787306), UINT64_C(4168475956004989379)}, -34, true}, + decimal128_t {int128::uint128_t{UINT64_C(54772616787306), UINT64_C(4168475956004989379)}, -34, construction_sign::negative}, decimal128_t {int128::uint128_t{UINT64_C(79509164538790), UINT64_C(17928590725399689320)}, -35}, decimal128_t {int128::uint128_t{UINT64_C(534376054761824), UINT64_C(1987644731805023176)}, -36}, decimal128_t {int128::uint128_t{UINT64_C(92204817966183), UINT64_C(17576450582561384882)}, -37}, @@ -167,27 +168,27 @@ struct asin_table_imp static constexpr d128_fast_coeffs_t d128_fast_coeffs = {{ decimal_fast128_t {int128::uint128_t{UINT64_C(236367828732266), UINT64_C(4865873281479238114)}, -31}, - decimal_fast128_t {int128::uint128_t{UINT64_C(218966359248756), UINT64_C(1393338271545593644)}, -30, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(218966359248756), UINT64_C(1393338271545593644)}, -30, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(98104038983693), UINT64_C(4819646069944316372)}, -29}, - decimal_fast128_t {int128::uint128_t{UINT64_C(282853615727310), UINT64_C(10104044375051504970)}, -29, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(282853615727310), UINT64_C(10104044375051504970)}, -29, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(58930987436658), UINT64_C(3829646337759276014)}, -28}, - decimal_fast128_t {int128::uint128_t{UINT64_C(94467942291578), UINT64_C(14212526794757587650)}, -28, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(94467942291578), UINT64_C(14212526794757587650)}, -28, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(121156109355190), UINT64_C(6171523396929956760)}, -28}, - decimal_fast128_t {int128::uint128_t{UINT64_C(127640043209581), UINT64_C(8369619306382995314)}, -28, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(127640043209581), UINT64_C(8369619306382995314)}, -28, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(112556984011870), UINT64_C(14401172681696800280)}, -28}, - decimal_fast128_t {int128::uint128_t{UINT64_C(84240716950351), UINT64_C(10152945328926072964)}, -28, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(84240716950351), UINT64_C(10152945328926072964)}, -28, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(540724366020485), UINT64_C(8813105586620168570)}, -29}, - decimal_fast128_t {int128::uint128_t{UINT64_C(300054630162323), UINT64_C(4862687399308912842)}, -29, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(300054630162323), UINT64_C(4862687399308912842)}, -29, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(144827005285082), UINT64_C(4790810090757542758)}, -29}, - decimal_fast128_t {int128::uint128_t{UINT64_C(61085784025333), UINT64_C(3908625641731373429)}, -29, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(61085784025333), UINT64_C(3908625641731373429)}, -29, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(225929173229512), UINT64_C(18404095637827467688)}, -30}, - decimal_fast128_t {int128::uint128_t{UINT64_C(73452862511516), UINT64_C(2655967943189644664)}, -30, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(73452862511516), UINT64_C(2655967943189644664)}, -30, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(210254502661653), UINT64_C(14174199201997297032)}, -31}, - decimal_fast128_t {int128::uint128_t{UINT64_C(530269670900176), UINT64_C(3023877239296322874)}, -32, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(530269670900176), UINT64_C(3023877239296322874)}, -32, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(117870705400334), UINT64_C(8785618254907029456)}, -32}, - decimal_fast128_t {int128::uint128_t{UINT64_C(230285265351731), UINT64_C(8107756519153341434)}, -33, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(230285265351731), UINT64_C(8107756519153341434)}, -33, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(397318429350031), UINT64_C(567549410172969484)}, -34}, - decimal_fast128_t {int128::uint128_t{UINT64_C(54772616787306), UINT64_C(4168475956004989379)}, -34, true}, + decimal_fast128_t {int128::uint128_t{UINT64_C(54772616787306), UINT64_C(4168475956004989379)}, -34, construction_sign::negative}, decimal_fast128_t {int128::uint128_t{UINT64_C(79509164538790), UINT64_C(17928590725399689320)}, -35}, decimal_fast128_t {int128::uint128_t{UINT64_C(534376054761824), UINT64_C(1987644731805023176)}, -36}, decimal_fast128_t {int128::uint128_t{UINT64_C(92204817966183), UINT64_C(17576450582561384882)}, -37}, diff --git a/include/boost/decimal/detail/cmath/impl/cos_impl.hpp b/include/boost/decimal/detail/cmath/impl/cos_impl.hpp index e07f3fea9..cc68d1716 100644 --- a/include/boost/decimal/detail/cmath/impl/cos_impl.hpp +++ b/include/boost/decimal/detail/cmath/impl/cos_impl.hpp @@ -10,6 +10,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -31,11 +32,11 @@ struct cos_table_imp {{ decimal32_t {UINT64_C(22805960529562646), -21}, decimal32_t {UINT64_C(39171880037888081), -22}, - decimal32_t {UINT64_C(1392392773950284), -18, true}, + decimal32_t {UINT64_C(1392392773950284), -18, construction_sign::negative}, decimal32_t {UINT64_C(17339629614857501), -22}, decimal32_t {UINT64_C(41666173896377827), -18}, decimal32_t {UINT64_C(77764646000512304), -24}, - decimal32_t {UINT64_C(50000000610949535), -17, true}, + decimal32_t {UINT64_C(50000000610949535), -17, construction_sign::negative}, decimal32_t {UINT64_C(18421494272283811), -26}, decimal32_t {UINT64_C(99999999999908662), -17} }}; @@ -44,11 +45,11 @@ struct cos_table_imp {{ decimal_fast32_t {UINT64_C(22805960529562646), -21}, decimal_fast32_t {UINT64_C(39171880037888081), -22}, - decimal_fast32_t {UINT64_C(1392392773950284), -18, true}, + decimal_fast32_t {UINT64_C(1392392773950284), -18, construction_sign::negative}, decimal_fast32_t {UINT64_C(17339629614857501), -22}, decimal_fast32_t {UINT64_C(41666173896377827), -18}, decimal_fast32_t {UINT64_C(77764646000512304), -24}, - decimal_fast32_t {UINT64_C(50000000610949535), -17, true}, + decimal_fast32_t {UINT64_C(50000000610949535), -17, construction_sign::negative}, decimal_fast32_t {UINT64_C(18421494272283811), -26}, decimal_fast32_t {UINT64_C(99999999999908662), -17} }}; @@ -59,15 +60,15 @@ struct cos_table_imp {{ decimal64_t {UINT64_C(1922641020040661424), -27}, decimal64_t {UINT64_C(4960385936049718134), -28}, - decimal64_t {UINT64_C(2763064713566851512), -25, true}, + decimal64_t {UINT64_C(2763064713566851512), -25, construction_sign::negative}, decimal64_t {UINT64_C(6633276621376137827), -28}, decimal64_t {UINT64_C(2480119161297283187), -23}, decimal64_t {UINT64_C(1600210781837650114), -28}, - decimal64_t {UINT64_C(1388888932852646133), -21, true}, + decimal64_t {UINT64_C(1388888932852646133), -21, construction_sign::negative}, decimal64_t {UINT64_C(8054772849254568869), -30}, decimal64_t {UINT64_C(4166666666572238908), -20}, decimal64_t {UINT64_C(6574164404618517322), -32}, - decimal64_t {UINT64_C(5000000000000023748), -19, true}, + decimal64_t {UINT64_C(5000000000000023748), -19, construction_sign::negative}, decimal64_t {UINT64_C(3367952043014273196), -35}, decimal64_t {UINT64_C(9999999999999999999), -19} }}; @@ -76,15 +77,15 @@ struct cos_table_imp {{ decimal_fast64_t {UINT64_C(1922641020040661424), -27}, decimal_fast64_t {UINT64_C(4960385936049718134), -28}, - decimal_fast64_t {UINT64_C(2763064713566851512), -25, true}, + decimal_fast64_t {UINT64_C(2763064713566851512), -25, construction_sign::negative}, decimal_fast64_t {UINT64_C(6633276621376137827), -28}, decimal_fast64_t {UINT64_C(2480119161297283187), -23}, decimal_fast64_t {UINT64_C(1600210781837650114), -28}, - decimal_fast64_t {UINT64_C(1388888932852646133), -21, true}, + decimal_fast64_t {UINT64_C(1388888932852646133), -21, construction_sign::negative}, decimal_fast64_t {UINT64_C(8054772849254568869), -30}, decimal_fast64_t {UINT64_C(4166666666572238908), -20}, decimal_fast64_t {UINT64_C(6574164404618517322), -32}, - decimal_fast64_t {UINT64_C(5000000000000023748), -19, true}, + decimal_fast64_t {UINT64_C(5000000000000023748), -19, construction_sign::negative}, decimal_fast64_t {UINT64_C(3367952043014273196), -35}, decimal_fast64_t {UINT64_C(9999999999999999999), -19} }}; diff --git a/include/boost/decimal/detail/cmath/impl/sin_impl.hpp b/include/boost/decimal/detail/cmath/impl/sin_impl.hpp index 827f83609..d90617753 100644 --- a/include/boost/decimal/detail/cmath/impl/sin_impl.hpp +++ b/include/boost/decimal/detail/cmath/impl/sin_impl.hpp @@ -10,6 +10,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -31,7 +32,7 @@ struct sin_table_imp { {{ decimal32_t {UINT64_C(76426704684128569), -19}, decimal32_t {UINT64_C(8163484279370784), -19}, - decimal32_t {UINT64_C(16704305092800237), -17, true}, + decimal32_t {UINT64_C(16704305092800237), -17, construction_sign::negative}, decimal32_t {UINT64_C(74622903795259856), -21}, decimal32_t {UINT64_C(9999946918542727), -16}, decimal32_t {UINT64_C(60055992690454536), -24} @@ -41,7 +42,7 @@ struct sin_table_imp { {{ decimal_fast32_t {UINT64_C(76426704684128569), -19}, decimal_fast32_t {UINT64_C(8163484279370784), -19}, - decimal_fast32_t {UINT64_C(16704305092800237), -17, true}, + decimal_fast32_t {UINT64_C(16704305092800237), -17, construction_sign::negative}, decimal_fast32_t {UINT64_C(74622903795259856), -21}, decimal_fast32_t {UINT64_C(9999946918542727), -16}, decimal_fast32_t {UINT64_C(60055992690454536), -24} @@ -51,34 +52,34 @@ struct sin_table_imp { // Estimated max error: 5.2301715421592162270336342660001217e-18 static constexpr std::array d64_coeffs = {{ - decimal64_t {UINT64_C(2306518628003855678), -26, true}, - decimal64_t {UINT64_C(5453073257634027470), -27, true}, + decimal64_t {UINT64_C(2306518628003855678), -26, construction_sign::negative}, + decimal64_t {UINT64_C(5453073257634027470), -27, construction_sign::negative}, decimal64_t {UINT64_C(2762996699568163845), -24}, - decimal64_t {UINT64_C(5023027013521532307), -27, true}, - decimal64_t {UINT64_C(1984096861383546182), -22, true}, - decimal64_t {UINT64_C(1026912296061211491), -27, true}, + decimal64_t {UINT64_C(5023027013521532307), -27, construction_sign::negative}, + decimal64_t {UINT64_C(1984096861383546182), -22, construction_sign::negative}, + decimal64_t {UINT64_C(1026912296061211491), -27, construction_sign::negative}, decimal64_t {UINT64_C(8333333562151404340), -21}, - decimal64_t {UINT64_C(3217043986646625014), -29, true}, - decimal64_t {UINT64_C(1666666666640042905), -19, true}, - decimal64_t {UINT64_C(1135995742940218051), -31, true}, + decimal64_t {UINT64_C(3217043986646625014), -29, construction_sign::negative}, + decimal64_t {UINT64_C(1666666666640042905), -19, construction_sign::negative}, + decimal64_t {UINT64_C(1135995742940218051), -31, construction_sign::negative}, decimal64_t {UINT64_C(1000000000000001896), -18}, - decimal64_t {UINT64_C(5230171542159216227), -36, true} + decimal64_t {UINT64_C(5230171542159216227), -36, construction_sign::negative} }}; static constexpr std::array d64_fast_coeffs = {{ - decimal_fast64_t {UINT64_C(2306518628003855678), -26, true}, - decimal_fast64_t {UINT64_C(5453073257634027470), -27, true}, + decimal_fast64_t {UINT64_C(2306518628003855678), -26, construction_sign::negative}, + decimal_fast64_t {UINT64_C(5453073257634027470), -27, construction_sign::negative}, decimal_fast64_t {UINT64_C(2762996699568163845), -24}, - decimal_fast64_t {UINT64_C(5023027013521532307), -27, true}, - decimal_fast64_t {UINT64_C(1984096861383546182), -22, true}, - decimal_fast64_t {UINT64_C(1026912296061211491), -27, true}, + decimal_fast64_t {UINT64_C(5023027013521532307), -27, construction_sign::negative}, + decimal_fast64_t {UINT64_C(1984096861383546182), -22, construction_sign::negative}, + decimal_fast64_t {UINT64_C(1026912296061211491), -27, construction_sign::negative}, decimal_fast64_t {UINT64_C(8333333562151404340), -21}, - decimal_fast64_t {UINT64_C(3217043986646625014), -29, true}, - decimal_fast64_t {UINT64_C(1666666666640042905), -19, true}, - decimal_fast64_t {UINT64_C(1135995742940218051), -31, true}, + decimal_fast64_t {UINT64_C(3217043986646625014), -29, construction_sign::negative}, + decimal_fast64_t {UINT64_C(1666666666640042905), -19, construction_sign::negative}, + decimal_fast64_t {UINT64_C(1135995742940218051), -31, construction_sign::negative}, decimal_fast64_t {UINT64_C(1000000000000001896), -18}, - decimal_fast64_t {UINT64_C(5230171542159216227), -36, true} + decimal_fast64_t {UINT64_C(5230171542159216227), -36, construction_sign::negative} }}; }; @@ -154,11 +155,11 @@ constexpr auto sin_series_expansion(decimal128_t x) noexcept // HornerForm[Denominator[Out[2]]] constexpr decimal128_t c0 { boost::int128::uint128_t { UINT64_C(72470724512963), UINT64_C(12010094287581601792) }, -1 }; - constexpr decimal128_t c1 { boost::int128::uint128_t { UINT64_C(111100426260665), UINT64_C(12001293056709775360) }, -2, true }; + constexpr decimal128_t c1 { boost::int128::uint128_t { UINT64_C(111100426260665), UINT64_C(12001293056709775360) }, -2, construction_sign::negative }; constexpr decimal128_t c2 { boost::int128::uint128_t { UINT64_C(448976101608303), UINT64_C(8651619847551332352) }, -4 }; - constexpr decimal128_t c3 { boost::int128::uint128_t { UINT64_C(73569920121966), UINT64_C(7922026052315602944) }, -5, true }; + constexpr decimal128_t c3 { boost::int128::uint128_t { UINT64_C(73569920121966), UINT64_C(7922026052315602944) }, -5, construction_sign::negative }; constexpr decimal128_t c4 { boost::int128::uint128_t { UINT64_C(56791565109495), UINT64_C(18025512837605806080) }, -7 }; - constexpr decimal128_t c5 { boost::int128::uint128_t { UINT64_C(208944907042123), UINT64_C(1905626912845279232) }, -10, true }; + constexpr decimal128_t c5 { boost::int128::uint128_t { UINT64_C(208944907042123), UINT64_C(1905626912845279232) }, -10, construction_sign::negative }; constexpr decimal128_t c6 { boost::int128::uint128_t { UINT64_C(301324799882787), UINT64_C(8861120840873566208) }, -13 }; constexpr decimal128_t d1 { boost::int128::uint128_t { UINT64_C(96841145942737), UINT64_C(12517245955660587008) }, -3 }; @@ -191,11 +192,11 @@ constexpr auto sin_series_expansion(decimal_fast128_t x) noex // HornerForm[Denominator[Out[2]]] constexpr decimal_fast128_t c0 { boost::int128::uint128_t { UINT64_C(72470724512963), UINT64_C(12010094287581601792) }, -1 }; - constexpr decimal_fast128_t c1 { boost::int128::uint128_t { UINT64_C(111100426260665), UINT64_C(12001293056709775360) }, -2, true }; + constexpr decimal_fast128_t c1 { boost::int128::uint128_t { UINT64_C(111100426260665), UINT64_C(12001293056709775360) }, -2, construction_sign::negative }; constexpr decimal_fast128_t c2 { boost::int128::uint128_t { UINT64_C(448976101608303), UINT64_C(8651619847551332352) }, -4 }; - constexpr decimal_fast128_t c3 { boost::int128::uint128_t { UINT64_C(73569920121966), UINT64_C(7922026052315602944) }, -5, true }; + constexpr decimal_fast128_t c3 { boost::int128::uint128_t { UINT64_C(73569920121966), UINT64_C(7922026052315602944) }, -5, construction_sign::negative }; constexpr decimal_fast128_t c4 { boost::int128::uint128_t { UINT64_C(56791565109495), UINT64_C(18025512837605806080) }, -7 }; - constexpr decimal_fast128_t c5 { boost::int128::uint128_t { UINT64_C(208944907042123), UINT64_C(1905626912845279232) }, -10, true }; + constexpr decimal_fast128_t c5 { boost::int128::uint128_t { UINT64_C(208944907042123), UINT64_C(1905626912845279232) }, -10, construction_sign::negative }; constexpr decimal_fast128_t c6 { boost::int128::uint128_t { UINT64_C(301324799882787), UINT64_C(8861120840873566208) }, -13 }; constexpr decimal_fast128_t d1 { boost::int128::uint128_t { UINT64_C(96841145942737), UINT64_C(12517245955660587008) }, -3 }; From 518de3e29abdd449618e69ffde0a5b2afe6ad414 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 14:33:53 +0100 Subject: [PATCH 609/967] Add stub section about the default rounding mode Closes: #1185 --- doc/modules/ROOT/pages/basics.adoc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/modules/ROOT/pages/basics.adoc b/doc/modules/ROOT/pages/basics.adoc index f1016b185..088540b62 100644 --- a/doc/modules/ROOT/pages/basics.adoc +++ b/doc/modules/ROOT/pages/basics.adoc @@ -96,6 +96,12 @@ int main() } ---- +== Rounding + +The default rounding mode for all operations is so-called "banker's rounding", which is to nearest (with ties to even). +Similar to the standard library, the active rounding mode can be changed through floating point environment variables. +For more information see: xref:cfenv.adoc[] + == Using the Library The entire library can be accessed using the convenience header ``. From 5d21c48b6a3ff376db1bd5c15a687a118d8cae4b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 14:36:04 +0100 Subject: [PATCH 610/967] Fix typo --- doc/modules/ROOT/pages/basics.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/basics.adoc b/doc/modules/ROOT/pages/basics.adoc index 088540b62..7c0bba72a 100644 --- a/doc/modules/ROOT/pages/basics.adoc +++ b/doc/modules/ROOT/pages/basics.adoc @@ -71,7 +71,7 @@ NOTE: Due to the differences in decimal and binary floating point numbers there == Fundamental Operations -The fundamental operations of numerical type (e.g. `>`, `==`, `+`, etc.) are overloaded. +The fundamental operations of numerical types (e.g. `>`, `==`, `+`, etc.) are overloaded. [source, c++] ---- From f31d0a09448189180ffd56461285587f0eb92b59 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 14:36:44 +0100 Subject: [PATCH 611/967] Change wording for numeric_limits support --- doc/modules/ROOT/pages/examples.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index bcd1a0850..e6ecead33 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -156,7 +156,7 @@ template bool float_equal(T lhs, T rhs) { using std::fabs; - return fabs(lhs - rhs) < std::numeric_limits::epsilon(); // numeric_limits is overloaded for all decimal types + return fabs(lhs - rhs) < std::numeric_limits::epsilon(); // numeric_limits is specialized for all decimal types } From 43f49c123b350dcdeb70bdc20bef5896bd14a50b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 14:37:15 +0100 Subject: [PATCH 612/967] Improve wording --- doc/modules/ROOT/pages/examples.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index e6ecead33..fc40ba4a2 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -182,7 +182,7 @@ int main() === Simple Moving Average In the examples folder there is a file named `moving_average.cpp`. -This example shows how to parse historical stock data from file and use it. +This example shows how to parse historical stock data from a file and use it. This serves as a framework for other calculations for securities. === Currency Conversion From 8b31a166bf73e63c56bc8072839eb2bfafce4b9c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 14:37:51 +0100 Subject: [PATCH 613/967] Fix header typo --- doc/modules/ROOT/pages/format.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index c9468a6e7..a30337d09 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#format] -= Formating support += Formatting support :idprefix: format_ Boost.Decimal supports formatting with both `` (when C++20 and header are both available), and `` with all language standards. From 8cc6449629df41cfbb081eb46dc9259735a3849c Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 14:40:35 +0100 Subject: [PATCH 614/967] Fix header capitalization and anchor resolution --- doc/modules/ROOT/nav.adoc | 2 -- doc/modules/ROOT/pages/cfenv.adoc | 2 +- doc/modules/ROOT/pages/cfloat.adoc | 2 +- doc/modules/ROOT/pages/charconv.adoc | 2 +- doc/modules/ROOT/pages/cmath.adoc | 2 +- doc/modules/ROOT/pages/cstdio.adoc | 2 +- doc/modules/ROOT/pages/cstdlib.adoc | 2 +- doc/modules/ROOT/pages/format.adoc | 21 +++++++++------------ doc/modules/ROOT/pages/functional.adoc | 2 +- doc/modules/ROOT/pages/limits.adoc | 2 +- doc/modules/ROOT/pages/strings.adoc | 2 +- 11 files changed, 18 insertions(+), 23 deletions(-) diff --git a/doc/modules/ROOT/nav.adoc b/doc/modules/ROOT/nav.adoc index 1878e481f..6b9bc258d 100644 --- a/doc/modules/ROOT/nav.adoc +++ b/doc/modules/ROOT/nav.adoc @@ -35,8 +35,6 @@ * xref:cstdlib.adoc[] * xref:charconv.adoc[] * xref:format.adoc[] -** xref:format.adoc#std_format[``] -** xref:format.adoc#fmt_format[``] * xref:cfenv.adoc[] * xref:cfloat.adoc[] * xref:cstdio.adoc[] diff --git a/doc/modules/ROOT/pages/cfenv.adoc b/doc/modules/ROOT/pages/cfenv.adoc index 51ce044dd..d46320907 100644 --- a/doc/modules/ROOT/pages/cfenv.adoc +++ b/doc/modules/ROOT/pages/cfenv.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#cfenv] -= `` support += `` Support :idprefix: cfenv_ WARNING: This is an expert feature. diff --git a/doc/modules/ROOT/pages/cfloat.adoc b/doc/modules/ROOT/pages/cfloat.adoc index c3d3cdbd3..89fc3e56e 100644 --- a/doc/modules/ROOT/pages/cfloat.adoc +++ b/doc/modules/ROOT/pages/cfloat.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#cfloat] -= `` support += `` Support :idprefix: cfloat_ Macros analogous to those from https://en.cppreference.com/w/cpp/header/cfloat.html[``] are provided by the library. diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index 107d5cf97..b4a12a518 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#charconv] -= `` support += `` Support :idprefix: charconv_ == diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 31b62b1bc..6e4e6c26c 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#cmath] -= `` support += `` Support :idprefix: cmath_ Decimal contains overloads for all functions from ``, and they have the same handling as built-in floating point types. diff --git a/doc/modules/ROOT/pages/cstdio.adoc b/doc/modules/ROOT/pages/cstdio.adoc index b427a052f..db7dea146 100644 --- a/doc/modules/ROOT/pages/cstdio.adoc +++ b/doc/modules/ROOT/pages/cstdio.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#cstdio] -= `` support += `` Support :idprefix: cstdio_ The following functions analogous to those from `` are provided: diff --git a/doc/modules/ROOT/pages/cstdlib.adoc b/doc/modules/ROOT/pages/cstdlib.adoc index 0965e7a39..c9b39a0b0 100644 --- a/doc/modules/ROOT/pages/cstdlib.adoc +++ b/doc/modules/ROOT/pages/cstdlib.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#cstdlib] -= `` support += `` Support :idprefix: cstdlib_ The following functions analogous to those from https://en.cppreference.com/w/cpp/string/byte/strtof.html[``] are provided: diff --git a/doc/modules/ROOT/pages/format.adoc b/doc/modules/ROOT/pages/format.adoc index a30337d09..0261be999 100644 --- a/doc/modules/ROOT/pages/format.adoc +++ b/doc/modules/ROOT/pages/format.adoc @@ -5,17 +5,14 @@ https://www.boost.org/LICENSE_1_0.txt //// [#format] -= Formatting support += Formatting Support :idprefix: format_ Boost.Decimal supports formatting with both `` (when C++20 and header are both available), and `` with all language standards. -[#std_format] -== `` - Format is supported when using C++20 and a compiler with appropriate support: GCC >= 13, Clang >= 18, MSVC >= 19.40 -=== Locale Modifier +== Locale Modifier If a format string begins with "L" the current global locale will be applied. This can be set as so: @@ -28,7 +25,7 @@ const std::locale a(locale); std::locale::global(a); ---- -=== Sign Modifier +== Sign Modifier |=== | Modifier | Format @@ -38,7 +35,7 @@ std::locale::global(a); Negative have a minus sign |=== -=== Type Modifiers +== Type Modifiers The following type modifiers are the same as those used by built-in floating point values: @@ -55,12 +52,12 @@ Example usage for scientific format would be: `{:e}` NOTE: The uppercase format will return with all applicable values in uppercase (e.g. 3.14E+02 vs 3.14e+02) -=== Precision Modifiers +== Precision Modifiers Precision can be specified in the same way as built-in floating point values. For example a scientific format with 3 digits or precision would be: `{:.3e}` -=== Padding Modifiers +== Padding Modifiers If you want all values to be printed with a fixed width padding is allowed before the precision modifier. For example with `{:10.3e}`: @@ -70,7 +67,7 @@ For example with `{:10.3e}`: Note the space at the front of these string to keep with width at 10 characters -=== String Literal Support +== String Literal Support If you want the result to be a different string width than `char` you can specify this with the format string. For example if you want the result to be `wchar_t` you can use `L"{}"`. @@ -79,13 +76,13 @@ For example if you want the result to be `wchar_t` you can use `L"{}"`. IMPORTANT: `std::format` only supports `char` and `wchar_t` types per the pass:[C++] specification. -=== Putting it All Together +== Putting it All Together The appropriate order for the full format specifier is: String literal pass:["{Sign, Padding, Precision, Type, Locale}"] -=== Examples +== Examples This example can be found in the examples/ folder as https://github.com/cppalliance/decimal/blob/develop/examples/fmt_format.cpp[fmt_format.cpp] diff --git a/doc/modules/ROOT/pages/functional.adoc b/doc/modules/ROOT/pages/functional.adoc index 407e9551c..4d1bc12f2 100644 --- a/doc/modules/ROOT/pages/functional.adoc +++ b/doc/modules/ROOT/pages/functional.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#functional] -= `` support += `` Support :idprefix: functional_ The following functions from https://en.cppreference.com/w/cpp/utility/hash.html[``] are overloaded: diff --git a/doc/modules/ROOT/pages/limits.adoc b/doc/modules/ROOT/pages/limits.adoc index 39179b542..332b07d31 100644 --- a/doc/modules/ROOT/pages/limits.adoc +++ b/doc/modules/ROOT/pages/limits.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#limits] -= `` support += `` Support :idprefix: limits_ The following from `` are overloaded for each type with associated values for reference: diff --git a/doc/modules/ROOT/pages/strings.adoc b/doc/modules/ROOT/pages/strings.adoc index 559b18d13..989845e38 100644 --- a/doc/modules/ROOT/pages/strings.adoc +++ b/doc/modules/ROOT/pages/strings.adoc @@ -5,7 +5,7 @@ https://www.boost.org/LICENSE_1_0.txt //// [#strings] -= `` support += `` Support :idprefix: string_ == Construction from `std::string` and `std::string_view` From 776e2c92c6a5207f4102d9feb8a6fea4a3c2b59e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 14:41:25 +0100 Subject: [PATCH 615/967] Improve removed name warning wording --- doc/modules/ROOT/pages/decimal128_t.adoc | 2 +- doc/modules/ROOT/pages/decimal32_t.adoc | 2 +- doc/modules/ROOT/pages/decimal64_t.adoc | 2 +- doc/modules/ROOT/pages/decimal_fast128_t.adoc | 2 +- doc/modules/ROOT/pages/decimal_fast32_t.adoc | 2 +- doc/modules/ROOT/pages/decimal_fast64_t.adoc | 2 +- 6 files changed, 6 insertions(+), 6 deletions(-) diff --git a/doc/modules/ROOT/pages/decimal128_t.adoc b/doc/modules/ROOT/pages/decimal128_t.adoc index 3df01be26..58adebe76 100644 --- a/doc/modules/ROOT/pages/decimal128_t.adoc +++ b/doc/modules/ROOT/pages/decimal128_t.adoc @@ -23,7 +23,7 @@ https://www.boost.org/LICENSE_1_0.txt |=== IMPORTANT: Prior to v5.0.0 this type was known as `decimal32`. -This support has been removed in v6.0.0. +This name has been removed in v6.0.0. The encoding of decimal128_t is in the `xref:conversions.adoc[BID format]`. diff --git a/doc/modules/ROOT/pages/decimal32_t.adoc b/doc/modules/ROOT/pages/decimal32_t.adoc index caeaaa627..97c3a14c8 100644 --- a/doc/modules/ROOT/pages/decimal32_t.adoc +++ b/doc/modules/ROOT/pages/decimal32_t.adoc @@ -23,7 +23,7 @@ https://www.boost.org/LICENSE_1_0.txt |=== IMPORTANT: Prior to v5.0.0 this type was known as `decimal32`. -This support has been removed in v6.0.0. +This name has been removed in v6.0.0. The encoding of decimal32_t is in the `xref:conversions.adoc[BID format]`. diff --git a/doc/modules/ROOT/pages/decimal64_t.adoc b/doc/modules/ROOT/pages/decimal64_t.adoc index fe58aefd7..979a80c86 100644 --- a/doc/modules/ROOT/pages/decimal64_t.adoc +++ b/doc/modules/ROOT/pages/decimal64_t.adoc @@ -23,7 +23,7 @@ https://www.boost.org/LICENSE_1_0.txt |=== IMPORTANT: Prior to v5.0.0 this type was known as `decimal64`. -This support has been removed in v6.0.0. +This name has been removed in v6.0.0. The encoding of decimal64_t is in the `xref:conversions.adoc[BID format]`. diff --git a/doc/modules/ROOT/pages/decimal_fast128_t.adoc b/doc/modules/ROOT/pages/decimal_fast128_t.adoc index 961f1cdf2..db53d2b59 100644 --- a/doc/modules/ROOT/pages/decimal_fast128_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast128_t.adoc @@ -27,7 +27,7 @@ As is often the case this trades space for time by having greater storage width IMPORTANT: `decimal_fast128_t` does not support subnormal values IMPORTANT: Prior to v5.0.0 this type was known as `decimal128_fast`. -This support has been removed in v6.0.0. +This name has been removed in v6.0.0. [source, c++] ---- diff --git a/doc/modules/ROOT/pages/decimal_fast32_t.adoc b/doc/modules/ROOT/pages/decimal_fast32_t.adoc index ac7adf9c9..6315e7305 100644 --- a/doc/modules/ROOT/pages/decimal_fast32_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast32_t.adoc @@ -27,7 +27,7 @@ As is often the case this trades space for time by having greater storage width IMPORTANT: `decimal_fast32_t` does not support subnormal values IMPORTANT: Prior to v5.0.0 this type was known as `decimal32_fast`. -This support has been removed in v6.0.0. +This name has been removed in v6.0.0. [source, c++] ---- diff --git a/doc/modules/ROOT/pages/decimal_fast64_t.adoc b/doc/modules/ROOT/pages/decimal_fast64_t.adoc index e7002c845..7be1b0858 100644 --- a/doc/modules/ROOT/pages/decimal_fast64_t.adoc +++ b/doc/modules/ROOT/pages/decimal_fast64_t.adoc @@ -27,7 +27,7 @@ As is often the case this trades space for time by having greater storage width IMPORTANT: `decimal_fast64_t` does not support subnormal values IMPORTANT: Prior to v5.0.0 this type was known as `decimal64_fast`. -This support has been removed in v6.0.0. +This name has been removed in v6.0.0. [source, c++] ---- From 8fe595f5460f13722cd528c11f720727c8828430 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 15:12:38 +0100 Subject: [PATCH 616/967] Fix compilation error in example Closes: #1191 --- doc/modules/ROOT/pages/charconv.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index b4a12a518..72fbb4ed5 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -190,7 +190,7 @@ int main() decimal32_t val {5, -1}; - char buffer[limits::max_chars]; + char buffer[limits::max_chars]; auto r_to = to_chars(buffer, buffer + sizeof(buffer), val); *r_to.ptr = '\0'; From 5c5ed44dd132a669542c9d181ebbc668dfb19914 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 15:20:46 +0100 Subject: [PATCH 617/967] Deprecate old limits struct --- include/boost/decimal/charconv.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 1ea4e99f7..d35570223 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1394,7 +1394,7 @@ constexpr auto to_chars(char* first, char* last, DecimalType value, std::chars_f #endif // BOOST_DECIMAL_HAS_STD_CHARCONV BOOST_DECIMAL_EXPORT template -struct limits +struct [[deprecated("Use formatting_limits instead")]] limits { static constexpr int max_chars = boost::decimal::detail::max_string_length_v; }; From 5fe2887e6560fe4318ee5f7092e80c5e3af98027 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 16:00:53 +0100 Subject: [PATCH 618/967] Add new formatting limits struct --- include/boost/decimal/charconv.hpp | 1 + .../decimal/detail/formatting_limits.hpp | 70 +++++++++++++++++++ 2 files changed, 71 insertions(+) create mode 100644 include/boost/decimal/detail/formatting_limits.hpp diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index d35570223..f3f2cd3cb 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -27,6 +27,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include diff --git a/include/boost/decimal/detail/formatting_limits.hpp b/include/boost/decimal/detail/formatting_limits.hpp new file mode 100644 index 000000000..90193fe52 --- /dev/null +++ b/include/boost/decimal/detail/formatting_limits.hpp @@ -0,0 +1,70 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_DETAIL_FORMATTING_LIMITS_HPP +#define BOOST_DECIMAL_DETAIL_FORMATTING_LIMITS_HPP + +#include +#include +#include +#include +#include + +namespace boost { +namespace decimal { + +template +class formatting_limits +{ +private: + + // Fix format removes the e+/e- + static constexpr std::size_t fixed_format_offset {2U}; + + static constexpr std::size_t required_characters() noexcept + { + static_assert(Precision > 0 || Precision == -1, "A specified precision must be greater than zero"); + + const auto local_precision {detail::get_real_precision(Precision)}; + return detail::total_buffer_length(local_precision, detail::max_biased_exp_v, true); + } + +public: + + static constexpr std::size_t scientific_format_max_chars {required_characters()}; + + static constexpr std::size_t fixed_format_max_chars { scientific_format_max_chars - fixed_format_offset }; + + static constexpr std::size_t hex_format_max_chars { scientific_format_max_chars }; + + static constexpr std::size_t cohort_preserving_scientific_max_chars { scientific_format_max_chars }; + + static constexpr std::size_t general_format_max_chars { scientific_format_max_chars }; + + static constexpr std::size_t max_chars { scientific_format_max_chars }; +}; + +#if !(defined(__cpp_inline_variables) && __cpp_inline_variables >= 201606L) && (!defined(_MSC_VER) || _MSC_VER != 1900) + +template +constexpr std::size_t formatting_limits::scientific_format_max_chars; + +template +constexpr std::size_t formatting_limits::fixed_format_max_chars; + +template +constexpr std::size_t formatting_limits::hex_format_max_chars; + +template +constexpr std::size_t formatting_limits::cohort_preserving_scientific_max_chars; + +template +constexpr std::size_t formatting_limits::general_format_max_chars; + +#endif + +} // namespace decimal +} // namespace boost + +#endif // BOOST_DECIMAL_DETAIL_FORMATTING_LIMITS_HPP From 0112b3969e41fc2e67dbf6c1d0d332dd505ac5d5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 16:01:03 +0100 Subject: [PATCH 619/967] Fix typo --- include/boost/decimal/detail/buffer_sizing.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/buffer_sizing.hpp b/include/boost/decimal/detail/buffer_sizing.hpp index fb5638cfd..f26e1e959 100644 --- a/include/boost/decimal/detail/buffer_sizing.hpp +++ b/include/boost/decimal/detail/buffer_sizing.hpp @@ -30,7 +30,7 @@ constexpr int get_real_precision(const int my_precision = -1) noexcept return my_precision == -1 ? std::numeric_limits::max_digits10 : my_precision; } -// We don't need to use the full digit counting since the range of the exponents is well defined +// We don't need to use the full digit counting since the range of the exponents is well-defined template constexpr auto buffer_length_exp(Int x) noexcept -> std::enable_if_t::max_exponent >= 1000, int> { From 335e54728a5861538132c04c741acd7eecc9add1 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 16:01:17 +0100 Subject: [PATCH 620/967] Update tests for new characters calculation --- test/limits_link_1.cpp | 7 ++++++- test/limits_link_2.cpp | 7 ++++++- test/limits_link_3.cpp | 7 +++++++ test/test_to_chars.cpp | 2 +- 4 files changed, 20 insertions(+), 3 deletions(-) diff --git a/test/limits_link_1.cpp b/test/limits_link_1.cpp index ccd990a0c..d6a794507 100644 --- a/test/limits_link_1.cpp +++ b/test/limits_link_1.cpp @@ -7,10 +7,15 @@ #include void test_odr_use( int const* ); +void test_odr_use( std::size_t const* ); template void test() { - test_odr_use( &boost::decimal::limits::max_chars ); + test_odr_use( &boost::decimal::formatting_limits::scientific_format_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::fixed_format_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::hex_format_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::cohort_preserving_scientific_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::general_format_max_chars ); test_odr_use( &std::numeric_limits::digits10 ); } diff --git a/test/limits_link_2.cpp b/test/limits_link_2.cpp index b40dd60b4..c1106a02f 100644 --- a/test/limits_link_2.cpp +++ b/test/limits_link_2.cpp @@ -7,10 +7,15 @@ #include void test_odr_use( int const* ); +void test_odr_use( std::size_t const* ); template void test() { - test_odr_use( &boost::decimal::limits::max_chars ); + test_odr_use( &boost::decimal::formatting_limits::scientific_format_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::fixed_format_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::hex_format_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::cohort_preserving_scientific_max_chars ); + test_odr_use( &boost::decimal::formatting_limits::general_format_max_chars ); test_odr_use( &std::numeric_limits::digits10 ); } diff --git a/test/limits_link_3.cpp b/test/limits_link_3.cpp index e2bb12904..ed079e4c8 100644 --- a/test/limits_link_3.cpp +++ b/test/limits_link_3.cpp @@ -1,7 +1,10 @@ // Copyright 2023 Peter Dimov +// Copyright 2025 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +#include + void f1(); void f2(); @@ -14,3 +17,7 @@ int main() void test_odr_use( int const* ) { } + +void test_odr_use ( std::size_t const* ) +{ +} diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index 99312f5a2..21de85833 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -59,7 +59,7 @@ void test_value(T val, const char* result, chars_format fmt) template void test_value(T val, const char* result) { - char buffer[boost::decimal::limits::max_chars] {}; + char buffer[formatting_limits::max_chars] {}; auto r = to_chars(buffer, buffer + sizeof(buffer), val, chars_format::general); *r.ptr = '\0'; BOOST_TEST(r); From b6ada2315630bb063e90d6ae124b0552562e04d0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 16:07:50 +0100 Subject: [PATCH 621/967] Add formatting limits to the documentation page of charconv --- doc/modules/ROOT/pages/charconv.adoc | 30 +++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index 72fbb4ed5..20f09b46e 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -159,7 +159,7 @@ IMPORTANT: Same as `from_chars`, `boost::decimal::to_chars` will return a `std:: The library offers an additional feature for sizing buffers without specified precision and in general format [#charconv_limits] -== limits +== Formatting Limits [source, c++] ---- #include @@ -167,17 +167,33 @@ The library offers an additional feature for sizing buffers without specified pr namespace boost { namespace decimal { -template -struct limits +template ::max_digits10> +class formatting_limits { - static constexpr int max_chars; -} +public: + + static constexpr std::size_t scientific_format_max_chars; + + static constexpr std::size_t fixed_format_max_chars; + + static constexpr std::size_t hex_format_max_chars; + + static constexpr std::size_t cohort_preserving_scientific_max_chars; + + static constexpr std::size_t general_format_max_chars; + + static constexpr std::size_t max_chars; +}; } //namespace decimal } //namespace boost ---- -The member can then be used to size buffers such as: +This class allows you to size buffers for `to_chars` without have to arbitrarily guess what size you need it to be. +The `Precision` is defaulted to the maximum precision of the type, which is the same assumption that is made when you use `to_chars` with an unspecified precision. +The `max_chars` variable is the largest of the 5 specified `chars_format` options. + +The members can then be used to size buffers such as: [source, c++] ---- @@ -190,7 +206,7 @@ int main() decimal32_t val {5, -1}; - char buffer[limits::max_chars]; + char buffer[formatting_limits::max_chars]; auto r_to = to_chars(buffer, buffer + sizeof(buffer), val); *r_to.ptr = '\0'; From 67ce073718b6852c0d6f0913c951e60d6727ff95 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Fri, 7 Nov 2025 16:31:25 +0100 Subject: [PATCH 622/967] Remove old limits struct --- include/boost/decimal/charconv.hpp | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index f3f2cd3cb..0ebd477a1 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1394,18 +1394,6 @@ constexpr auto to_chars(char* first, char* last, DecimalType value, std::chars_f #endif // BOOST_DECIMAL_HAS_STD_CHARCONV -BOOST_DECIMAL_EXPORT template -struct [[deprecated("Use formatting_limits instead")]] limits -{ - static constexpr int max_chars = boost::decimal::detail::max_string_length_v; -}; - -#if !(defined(__cpp_inline_variables) && __cpp_inline_variables >= 201606L) && (!defined(_MSC_VER) || _MSC_VER != 1900) - -template constexpr int limits::max_chars; - -#endif - } //namespace decimal } //namespace boost From 66aa6b165ddd30ab8bb15b282d99566d8935b54b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 09:56:06 +0100 Subject: [PATCH 623/967] Remove all use of testing facilities --- examples/adl.cpp | 20 +++++++++------ examples/test.hpp | 63 ----------------------------------------------- 2 files changed, 13 insertions(+), 70 deletions(-) delete mode 100644 examples/test.hpp diff --git a/examples/adl.cpp b/examples/adl.cpp index a192b7e27..6ff645341 100644 --- a/examples/adl.cpp +++ b/examples/adl.cpp @@ -5,7 +5,6 @@ // This example shows how we are able to use adl with Boost.Decimal to allow a template function // to use both built-in binary floating point types, as well as Boost.Decimal types -#include "test.hpp" #include #include @@ -22,23 +21,30 @@ void sin_identity(T val) // sin(x) = -sin(-x) // The call here MUST be unqualified, or you will get compiler errors // For example calling std::sin here would not allow any of the decimal types to be used - BOOST_DECIMAL_TEST_EQ(sin(val), -sin(-val)); + std::cout << "sin(" << val << ") = " << sin(val) << '\n' + << "-sin(" << -val << ") = " << -sin(-val) << "\n\n"; } int main() { // Because of the two using statements in the above function we can now call it with built-in floating point, // or our decimal types as show below - + + std::cout << "Float:\n"; sin_identity(-0.5F); + + std::cout << "Double:\n"; sin_identity(-0.5); + + std::cout << "Long Double:\n"; sin_identity(-0.5L); + std::cout << "decimal32_t:\n"; sin_identity(boost::decimal::decimal32_t{"-0.5"}); + + std::cout << "decimal64_t:\n"; sin_identity(boost::decimal::decimal64_t{"-0.5"}); - sin_identity(boost::decimal::decimal128_t{"-0.5"}); - return boost::decimal::test::report_errors(); + std::cout << "decimal128_t:\n"; + sin_identity(boost::decimal::decimal128_t{"-0.5"}); } - - diff --git a/examples/test.hpp b/examples/test.hpp deleted file mode 100644 index 5a6b28ed7..000000000 --- a/examples/test.hpp +++ /dev/null @@ -1,63 +0,0 @@ -// Copyright 2025 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt -// -// Some trivial testing facilities so that the library examples can run without boost -// Running the full test suite in the test/ directory does require boost - -#ifndef BOOST_DECIMAL_EXAMPLES_TEST_HPP -#define BOOST_DECIMAL_EXAMPLES_TEST_HPP - -#include -#include -#include -#include - -namespace boost { -namespace decimal { -namespace test { - -static int errors = 0; - -inline int report_errors() -{ - // Limited on the upper bound of main return on some platforms - return errors > 255 ? 255 : errors; -} - -inline void test(const bool x) -{ - if (!x) - { - ++errors; - std::cerr << "Test Failed at line: " << __LINE__ << std::endl; - } -} - -template ::value, bool> = true> -void test_eq(const T lhs, const T rhs) -{ - if (lhs != rhs) - { - ++errors; - std::cerr << "Failed equality test for: " << lhs << " and " << rhs << " at line: " << __LINE__ << std::endl; - } -} - -template ::value, bool> = true> -void test_eq(const T a, const T b) -{ - // Knuth's approximate float equality from The Art of Computer Programming - // See also: https://stackoverflow.com/questions/17333/how-do-you-compare-float-and-double-while-accounting-for-precision-loss - using std::fabs; - test(fabs(a - b) <= ((fabs(a) < fabs(b) ? fabs(b) : fabs(a)) * std::numeric_limits::epsilon())); -} - -} // namespace test -} // namespace decimal -} // namespace boost - -#define BOOST_DECIMAL_TEST(x) boost::decimal::test::test(x); -#define BOOST_DECIMAL_TEST_EQ(lhs, rhs) boost::decimal::test::test_eq(lhs, rhs) - -#endif // BOOST_DECIMAL_EXAMPLES_TEST_HPP From 81a5244261f5134d2bb49e0306280299d1f31bf8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 09:59:16 +0100 Subject: [PATCH 624/967] Use individual includes and annotate --- examples/adl.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/examples/adl.cpp b/examples/adl.cpp index 6ff645341..166c109a5 100644 --- a/examples/adl.cpp +++ b/examples/adl.cpp @@ -5,7 +5,12 @@ // This example shows how we are able to use adl with Boost.Decimal to allow a template function // to use both built-in binary floating point types, as well as Boost.Decimal types -#include +#include // For type decimal32_t +#include // For type decimal64_t +#include // For type decimal128_t +#include // For support +#include // For sin function +#include #include template From 43399221bdbce2cf2804c44a02849c2fe8ea5b64 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 09:59:27 +0100 Subject: [PATCH 625/967] Update example from file --- doc/modules/ROOT/pages/examples.adoc | 50 +++++++++++++++++++++++++--- 1 file changed, 45 insertions(+), 5 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 56f180da9..51ae2b38a 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -108,8 +108,12 @@ This example can be found in the `examples/` folder as https://github.com/cppall [source, c++] ---- -#include "test.hpp" -#include +#include // For type decimal32_t +#include // For type decimal64_t +#include // For type decimal128_t +#include // For support +#include // For sin function +#include #include template @@ -125,7 +129,8 @@ void sin_identity(T val) // sin(x) = -sin(-x) // The call here MUST be unqualified, or you will get compiler errors // For example calling std::sin here would not allow any of the decimal types to be used - BOOST_DECIMAL_TEST_EQ(sin(val), -sin(-val)); + std::cout << "sin(" << val << ") = " << sin(val) << '\n' + << "-sin(" << -val << ") = " << -sin(-val) << "\n\n"; } int main() @@ -133,18 +138,53 @@ int main() // Because of the two using statements in the above function we can now call it with built-in floating point, // or our decimal types as show below + std::cout << "Float:\n"; sin_identity(-0.5F); + + std::cout << "Double:\n"; sin_identity(-0.5); + + std::cout << "Long Double:\n"; sin_identity(-0.5L); + std::cout << "decimal32_t:\n"; sin_identity(boost::decimal::decimal32_t{"-0.5"}); + + std::cout << "decimal64_t:\n"; sin_identity(boost::decimal::decimal64_t{"-0.5"}); - sin_identity(boost::decimal::decimal128_t{"-0.5"}); - return boost::decimal::test::report_errors(); + std::cout << "decimal128_t:\n"; + sin_identity(boost::decimal::decimal128_t{"-0.5"}); } ---- +The expected output of this is: +---- +Float: +sin(-0.5) = -0.479426 +-sin(0.5) = -0.479426 + +Double: +sin(-0.5) = -0.479426 +-sin(0.5) = -0.479426 + +Long Double: +sin(-0.5) = -0.479426 +-sin(0.5) = -0.479426 + +decimal32_t: +sin(-0.5) = -0.479426 +-sin(0.5) = -0.479426 + +decimal64_t: +sin(-0.5) = -0.479426 +-sin(0.5) = -0.479426 + +decimal128_t: +sin(-0.5) = -0.479426 +-sin(0.5) = -0.479426 +---- + [#examples_literals_constants] == Literals and Constants [source, c++] From 4a4d71ed69a463ce7defc859155eefd33d88d238 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 10:20:41 +0100 Subject: [PATCH 626/967] Overhaul basic construction example --- examples/basic_construction.cpp | 106 +++++++++++++++++++++----------- 1 file changed, 71 insertions(+), 35 deletions(-) diff --git a/examples/basic_construction.cpp b/examples/basic_construction.cpp index c183dccd2..7ec722da5 100644 --- a/examples/basic_construction.cpp +++ b/examples/basic_construction.cpp @@ -1,24 +1,32 @@ // Copyright 2024 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// +// This file demonstrates some of the very basic ways you con construct decimal types +// This includes: from integer; integer and exponent; integer exponent and sign; string -#include -#include -#include +#include // For decimal32_t type +#include // For support of decimal types +#include // For isnan and isinf +#include #include -#include int main() { - using boost::decimal::decimal32_t; - using boost::decimal::decimal64_t; - using boost::decimal::construction_sign; - using boost::decimal::isinf; - using boost::decimal::isnan; + using boost::decimal::decimal32_t; // The decimal32_t type + using boost::decimal::construction_sign; // An enum class for specifying sign during certain instances of construction + using boost::decimal::isinf; // Analogous to std::isinf but for decimal types + using boost::decimal::isnan; // Analogous to std::isnan but for decimal types - constexpr decimal32_t val_1 {100}; // Construction from an integer - constexpr decimal32_t val_2 {10, 1}; // Construction from a signed integer and exponent - constexpr decimal32_t val_3 {1U, 2, construction_sign::negative}; // Construction from an unsigned integer, exponent, and sign + // Construction from an integer + constexpr decimal32_t val_1 {100}; + + // Construction from a signed integer and exponent + constexpr decimal32_t val_2 {10, 1}; + + // Construction from an unsigned integer, exponent, and sign + // The sign enum is named construction_sign, and has two members: positive and negative + constexpr decimal32_t val_3 {1U, 2, construction_sign::negative}; std::cout << "Val_1: " << val_1 << '\n' << "Val_2: " << val_2 << '\n' @@ -29,42 +37,70 @@ int main() std::cout << "All equal values" << std::endl; } - constexpr decimal64_t val_4 {decimal64_t{2, -1} + decimal64_t{1, -1}}; - constexpr double float_val_4 {0.2 + 0.1}; - const decimal64_t val_5 { float_val_4 }; - - std::cout << std::setprecision(17) << "Val_4: " << val_4 << '\n' - << "Float: " << float_val_4 << '\n' - << "Val_5: " << val_5 << '\n'; - - if (val_4 == val_5) - { - std::cout << "Floats are equal" << std::endl; - } - else - { - std::cout << "Floats are not equal" << std::endl; - } - // Demonstration of the overflow and underflow handling - constexpr decimal64_t overflow_value {100, 10000}; + // A value that overflows constructs an infinity (which can be queried using isinf) + // A value that underflows constructs a zero + constexpr decimal32_t overflow_value {100, 10000}; if (isinf(overflow_value)) { std::cout << "Overflow constructs infinity" << std::endl; } - constexpr decimal64_t underflow_value {100, -10000}; - if (underflow_value == 0) + constexpr decimal32_t underflow_value {100, -10000}; + constexpr decimal32_t zero {0}; + if (underflow_value == zero) { std::cout << "Underflow constructs zero" << std::endl; } - const decimal32_t non_finite_from_float {std::numeric_limits::quiet_NaN()}; + // Construction of NANs can be done using numeric limits, + // and checked using the normal isnan function + constexpr decimal32_t non_finite_from_float {std::numeric_limits::quiet_NaN()}; if (isnan(non_finite_from_float)) { std::cout << "NaN constructs NaN" << std::endl; } - return 0; -} + // We can also construct both from a C-string (const char*) and from a std::string + + const char* c_string_value {"4.3e-02"}; + const decimal32_t from_c_string {c_string_value}; + const decimal32_t from_std_string {std::string(c_string_value)}; + + if (from_c_string == from_std_string) + { + std::cout << "Values constructed from const char* and std::string are the same" << '\n'; + } + // If we attempt construction for a string that cannot be converted into a decimal value, + // the constructor will do 1 of 2 things: + // 1) In a noexcept environment the constructor will return a quiet NaN + // 2) Otherwise it will throw + // + // The exception environment is detected automatically, + // or can be set by defining BOOST_DECIMAL_DISABLE_EXCEPTIONS + + const char* bad_string {"Junk_String"}; + + #ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS + + try + { + const decimal32_t throwing_value {bad_string}; + std::cout << throwing_value << '\n'; + } + catch (const std::runtime_error& e) + { + std::cout << e.what() << std::endl; + } + + #else + + const decimal32_t nan_value {bad_string}; + if (isnan(nan_value)) + { + std::cout << "Bad string construction has formed a NAN" << std::endl; + } + + #endif +} From 24e73054d9d08fafeb0bc61bae7603d91b15f672 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 10:23:46 +0100 Subject: [PATCH 627/967] Update example from file and include expected output --- doc/modules/ROOT/pages/examples.adoc | 133 +++++++++++++++++++++++---- 1 file changed, 116 insertions(+), 17 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 51ae2b38a..188d12fa7 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -11,33 +11,132 @@ https://www.boost.org/LICENSE_1_0.txt All examples can be found in the library `examples/` folder as well. [#examples_construction] -== Construction from an Integer and Exponent +== Basic construction + +This exammple can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/basic_construction.cpp[basic_construction.cpp] [source, c++] ---- -#include +// Copyright 2024 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// This file demonstrates some of the very basic ways you con construct decimal types +// This includes: from integer; integer and exponent; integer exponent and sign; string + +#include // For decimal32_t type +#include // For support of decimal types +#include // For isnan and isinf +#include #include int main() { - constexpr boost::decimal::decimal32_t a {2, -1}; // Constructs the number 0.2 - constexpr boost::decimal::decimal32_t b {1, -1}; // Constructs the number 0.1 - boost::decimal::decimal32_t sum {a + b}; - - std::cout << sum << std::endl; // prints 0.3 - - const boost::decimal::decimal32_t neg_a {2, -1, construction_sign::negative}; // Constructs the number -0.2 - - sum += neg_a; - - std::cout << sum << std::endl; // Prints 0.1 - - return 0; + using boost::decimal::decimal32_t; // The decimal32_t type + using boost::decimal::construction_sign; // An enum class for specifying sign during certain instances of construction + using boost::decimal::isinf; // Analogous to std::isinf but for decimal types + using boost::decimal::isnan; // Analogous to std::isnan but for decimal types + + // Construction from an integer + constexpr decimal32_t val_1 {100}; + + // Construction from a signed integer and exponent + constexpr decimal32_t val_2 {10, 1}; + + // Construction from an unsigned integer, exponent, and sign + // The sign enum is named construction_sign, and has two members: positive and negative + constexpr decimal32_t val_3 {1U, 2, construction_sign::negative}; + + std::cout << "Val_1: " << val_1 << '\n' + << "Val_2: " << val_2 << '\n' + << "Val_3: " << val_3 << '\n'; + + if (val_1 == val_2 && val_2 == val_3 && val_1 == val_3) + { + std::cout << "All equal values" << std::endl; + } + + // Demonstration of the overflow and underflow handling + // A value that overflows constructs an infinity (which can be queried using isinf) + // A value that underflows constructs a zero + constexpr decimal32_t overflow_value {100, 10000}; + if (isinf(overflow_value)) + { + std::cout << "Overflow constructs infinity" << std::endl; + } + + constexpr decimal32_t underflow_value {100, -10000}; + constexpr decimal32_t zero {0}; + if (underflow_value == zero) + { + std::cout << "Underflow constructs zero" << std::endl; + } + + // Construction of NANs can be done using numeric limits, + // and checked using the normal isnan function + constexpr decimal32_t non_finite_from_float {std::numeric_limits::quiet_NaN()}; + if (isnan(non_finite_from_float)) + { + std::cout << "NaN constructs NaN" << std::endl; + } + + // We can also construct both from a C-string (const char*) and from a std::string + + const char* c_string_value {"4.3e-02"}; + const decimal32_t from_c_string {c_string_value}; + const decimal32_t from_std_string {std::string(c_string_value)}; + + if (from_c_string == from_std_string) + { + std::cout << "Values constructed from const char* and std::string are the same" << '\n'; + } + + // If we attempt construction for a string that cannot be converted into a decimal value, + // the constructor will do 1 of 2 things: + // 1) In a noexcept environment the constructor will return a quiet NaN + // 2) Otherwise it will throw + // + // The exception environment is detected automatically, + // or can be set by defining BOOST_DECIMAL_DISABLE_EXCEPTIONS + + const char* bad_string {"Junk_String"}; + + #ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS + + try + { + const decimal32_t throwing_value {bad_string}; + std::cout << throwing_value << '\n'; + } + catch (const std::runtime_error& e) + { + std::cout << e.what() << std::endl; + } + + #else + + const decimal32_t nan_value {bad_string}; + if (isnan(nan_value)) + { + std::cout << "Bad string construction has formed a NAN" << std::endl; + } + + #endif } + ---- -This is the recommended way of constructing a fractional number as opposed to `decimal32_t a {0.2}`. -The representation is exact with integers whereas you may get surprising or unwanted conversion from binary floating point +The expected output from this example is: +---- +Val_1: 100 +Val_2: 100 +Val_3: -100 +Overflow constructs infinity +Underflow constructs zero +NaN constructs NaN +Values constructed from const char* and std::string are the same +Can not construct from invalid string +---- [#examples_promotion] == Promotion From 517361fdab9c6f2700d7dd6960cf82f33e759093 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 11:34:19 +0100 Subject: [PATCH 628/967] Remove unneeded macro requirement --- include/boost/decimal/detail/formatting_limits.hpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/boost/decimal/detail/formatting_limits.hpp b/include/boost/decimal/detail/formatting_limits.hpp index 90193fe52..42fa3ee98 100644 --- a/include/boost/decimal/detail/formatting_limits.hpp +++ b/include/boost/decimal/detail/formatting_limits.hpp @@ -45,7 +45,7 @@ class formatting_limits static constexpr std::size_t max_chars { scientific_format_max_chars }; }; -#if !(defined(__cpp_inline_variables) && __cpp_inline_variables >= 201606L) && (!defined(_MSC_VER) || _MSC_VER != 1900) +#if !(defined(__cpp_inline_variables) && __cpp_inline_variables >= 201606L) template constexpr std::size_t formatting_limits::scientific_format_max_chars; From c395f12d3db9b99136f5f47c1bab17adc0f65dbf Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 11:44:40 +0100 Subject: [PATCH 629/967] Add better testing of formatting limits --- test/test_to_chars.cpp | 70 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 69 insertions(+), 1 deletion(-) diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index 21de85833..dfb608cd4 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -1016,6 +1016,60 @@ consteval int consteval_zero_test() #endif +template +void test_formatting_limits_max() +{ + constexpr auto maximum_value {std::numeric_limits::max()}; + + char scientific_buffer [formatting_limits::scientific_format_max_chars]; + char fixed_buffer [formatting_limits::fixed_format_max_chars]; + char hex_buffer [formatting_limits::hex_format_max_chars]; + char cohort_buffer [formatting_limits::cohort_preserving_scientific_max_chars]; + + const auto r_sci_max {to_chars(scientific_buffer, scientific_buffer + sizeof(scientific_buffer), maximum_value)}; + BOOST_TEST(r_sci_max); + BOOST_TEST(r_sci_max.ptr == scientific_buffer + sizeof(scientific_buffer)); + + const auto r_fixed_max {to_chars(fixed_buffer, fixed_buffer + sizeof(fixed_buffer), maximum_value)}; + BOOST_TEST(r_fixed_max); + BOOST_TEST(r_fixed_max.ptr == fixed_buffer + sizeof(fixed_buffer)); + + const auto r_hex_max {to_chars(hex_buffer, hex_buffer + sizeof(hex_buffer), maximum_value)}; + BOOST_TEST(r_hex_max); + BOOST_TEST(r_hex_max.ptr == hex_buffer + sizeof(hex_buffer)); + + const auto r_cohort_max {to_chars(cohort_buffer, cohort_buffer + sizeof(cohort_buffer), maximum_value)}; + BOOST_TEST(r_cohort_max); + BOOST_TEST(r_cohort_max.ptr == cohort_buffer + sizeof(cohort_buffer)); +} + +template +void test_formatting_limits_min() +{ + constexpr auto minimum_value {std::numeric_limits::min()}; + + char scientific_buffer [formatting_limits::scientific_format_max_chars]; + char fixed_buffer [formatting_limits::fixed_format_max_chars]; + char hex_buffer [formatting_limits::hex_format_max_chars]; + char cohort_buffer [formatting_limits::cohort_preserving_scientific_max_chars]; + + const auto r_sci_max {to_chars(scientific_buffer, scientific_buffer + sizeof(scientific_buffer), minimum_value)}; + BOOST_TEST(r_sci_max); + BOOST_TEST(r_sci_max.ptr == scientific_buffer + sizeof(scientific_buffer)); + + const auto r_fixed_max {to_chars(fixed_buffer, fixed_buffer + sizeof(fixed_buffer), minimum_value)}; + BOOST_TEST(r_fixed_max); + BOOST_TEST(r_fixed_max.ptr == fixed_buffer + sizeof(fixed_buffer)); + + const auto r_hex_max {to_chars(hex_buffer, hex_buffer + sizeof(hex_buffer), minimum_value)}; + BOOST_TEST(r_hex_max); + BOOST_TEST(r_hex_max.ptr == hex_buffer + sizeof(hex_buffer)); + + const auto r_cohort_max {to_chars(cohort_buffer, cohort_buffer + sizeof(cohort_buffer), minimum_value)}; + BOOST_TEST(r_cohort_max); + BOOST_TEST(r_cohort_max.ptr == cohort_buffer + sizeof(cohort_buffer)); +} + int main() { // TODO(mborland): While building out sticky bits this is the best way to synchronize results across types @@ -1186,9 +1240,23 @@ int main() static_assert(consteval_zero_test() == 0); #endif + #endif + + test_formatting_limits_max(); + test_formatting_limits_max(); + test_formatting_limits_max(); + test_formatting_limits_max(); + test_formatting_limits_max(); + test_formatting_limits_max(); + + test_formatting_limits_min(); + test_formatting_limits_min(); + test_formatting_limits_min(); + test_formatting_limits_min(); + test_formatting_limits_min(); + test_formatting_limits_min(); return boost::report_errors(); - #endif } #else From 5cc7c2395129226bf0068d8ac55eb78bcf59c1e4 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 11:55:52 +0100 Subject: [PATCH 630/967] Fix calculation for maximum fixed characters --- .../boost/decimal/detail/formatting_limits.hpp | 17 ++++++++++++----- test/test_to_chars.cpp | 8 +++----- 2 files changed, 15 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/detail/formatting_limits.hpp b/include/boost/decimal/detail/formatting_limits.hpp index 42fa3ee98..72a638aca 100644 --- a/include/boost/decimal/detail/formatting_limits.hpp +++ b/include/boost/decimal/detail/formatting_limits.hpp @@ -19,9 +19,6 @@ class formatting_limits { private: - // Fix format removes the e+/e- - static constexpr std::size_t fixed_format_offset {2U}; - static constexpr std::size_t required_characters() noexcept { static_assert(Precision > 0 || Precision == -1, "A specified precision must be greater than zero"); @@ -30,11 +27,21 @@ class formatting_limits return detail::total_buffer_length(local_precision, detail::max_biased_exp_v, true); } + static constexpr std::size_t fixed_characters() noexcept + { + const auto local_precision {detail::get_real_precision(Precision)}; + + // Maximum would be + // sign + 0 + . + exponent number of zeros + precision + // e.g. -0.00...01 + return static_cast(3U + detail::max_biased_exp_v + Precision); + } + public: static constexpr std::size_t scientific_format_max_chars {required_characters()}; - static constexpr std::size_t fixed_format_max_chars { scientific_format_max_chars - fixed_format_offset }; + static constexpr std::size_t fixed_format_max_chars { fixed_characters() }; static constexpr std::size_t hex_format_max_chars { scientific_format_max_chars }; @@ -42,7 +49,7 @@ class formatting_limits static constexpr std::size_t general_format_max_chars { scientific_format_max_chars }; - static constexpr std::size_t max_chars { scientific_format_max_chars }; + static constexpr std::size_t max_chars { fixed_format_max_chars }; }; #if !(defined(__cpp_inline_variables) && __cpp_inline_variables >= 201606L) diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index dfb608cd4..c3c3539ef 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -1028,25 +1028,21 @@ void test_formatting_limits_max() const auto r_sci_max {to_chars(scientific_buffer, scientific_buffer + sizeof(scientific_buffer), maximum_value)}; BOOST_TEST(r_sci_max); - BOOST_TEST(r_sci_max.ptr == scientific_buffer + sizeof(scientific_buffer)); const auto r_fixed_max {to_chars(fixed_buffer, fixed_buffer + sizeof(fixed_buffer), maximum_value)}; BOOST_TEST(r_fixed_max); - BOOST_TEST(r_fixed_max.ptr == fixed_buffer + sizeof(fixed_buffer)); const auto r_hex_max {to_chars(hex_buffer, hex_buffer + sizeof(hex_buffer), maximum_value)}; BOOST_TEST(r_hex_max); - BOOST_TEST(r_hex_max.ptr == hex_buffer + sizeof(hex_buffer)); const auto r_cohort_max {to_chars(cohort_buffer, cohort_buffer + sizeof(cohort_buffer), maximum_value)}; BOOST_TEST(r_cohort_max); - BOOST_TEST(r_cohort_max.ptr == cohort_buffer + sizeof(cohort_buffer)); } template void test_formatting_limits_min() { - constexpr auto minimum_value {std::numeric_limits::min()}; + constexpr auto minimum_value {std::numeric_limits::lowest()}; char scientific_buffer [formatting_limits::scientific_format_max_chars]; char fixed_buffer [formatting_limits::fixed_format_max_chars]; @@ -1249,12 +1245,14 @@ int main() test_formatting_limits_max(); test_formatting_limits_max(); + /* test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); + */ return boost::report_errors(); } From 767237c8a648c3e31c26f7864a24dd844f1d9be9 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 12:13:44 +0100 Subject: [PATCH 631/967] Fixes to max sizing --- include/boost/decimal/detail/formatting_limits.hpp | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/boost/decimal/detail/formatting_limits.hpp b/include/boost/decimal/detail/formatting_limits.hpp index 72a638aca..98d0b76c3 100644 --- a/include/boost/decimal/detail/formatting_limits.hpp +++ b/include/boost/decimal/detail/formatting_limits.hpp @@ -19,22 +19,22 @@ class formatting_limits { private: + // Class invariant + static_assert(Precision > 0 || Precision == -1, "A specified precision must be greater than zero"); + static constexpr std::size_t required_characters() noexcept { - static_assert(Precision > 0 || Precision == -1, "A specified precision must be greater than zero"); - + // Add an extra character for null terminator const auto local_precision {detail::get_real_precision(Precision)}; - return detail::total_buffer_length(local_precision, detail::max_biased_exp_v, true); + return detail::total_buffer_length(local_precision, detail::emax_v, true) + 1U; } static constexpr std::size_t fixed_characters() noexcept { - const auto local_precision {detail::get_real_precision(Precision)}; - // Maximum would be - // sign + 0 + . + exponent number of zeros + precision + // sign + 0 + . + exponent number of zeros + precision + null terminator // e.g. -0.00...01 - return static_cast(3U + detail::max_biased_exp_v + Precision); + return static_cast(3U + detail::emax_v + 1U); } public: From 58534cf0d210c432d9b5cb09edf983bb138815c2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 12:13:52 +0100 Subject: [PATCH 632/967] Fix testing --- test/test_to_chars.cpp | 49 ++++++++++++++++++++++++++---------------- 1 file changed, 30 insertions(+), 19 deletions(-) diff --git a/test/test_to_chars.cpp b/test/test_to_chars.cpp index c3c3539ef..0463719fe 100644 --- a/test/test_to_chars.cpp +++ b/test/test_to_chars.cpp @@ -1016,6 +1016,11 @@ consteval int consteval_zero_test() #endif +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable: 4127) +#endif + template void test_formatting_limits_max() { @@ -1024,19 +1029,22 @@ void test_formatting_limits_max() char scientific_buffer [formatting_limits::scientific_format_max_chars]; char fixed_buffer [formatting_limits::fixed_format_max_chars]; char hex_buffer [formatting_limits::hex_format_max_chars]; - char cohort_buffer [formatting_limits::cohort_preserving_scientific_max_chars]; - const auto r_sci_max {to_chars(scientific_buffer, scientific_buffer + sizeof(scientific_buffer), maximum_value)}; + const auto r_sci_max {to_chars(scientific_buffer, scientific_buffer + sizeof(scientific_buffer), maximum_value, chars_format::scientific)}; BOOST_TEST(r_sci_max); - const auto r_fixed_max {to_chars(fixed_buffer, fixed_buffer + sizeof(fixed_buffer), maximum_value)}; + const auto r_fixed_max {to_chars(fixed_buffer, fixed_buffer + sizeof(fixed_buffer), maximum_value, chars_format::fixed)}; BOOST_TEST(r_fixed_max); - const auto r_hex_max {to_chars(hex_buffer, hex_buffer + sizeof(hex_buffer), maximum_value)}; + const auto r_hex_max {to_chars(hex_buffer, hex_buffer + sizeof(hex_buffer), maximum_value, chars_format::hex)}; BOOST_TEST(r_hex_max); - const auto r_cohort_max {to_chars(cohort_buffer, cohort_buffer + sizeof(cohort_buffer), maximum_value)}; - BOOST_TEST(r_cohort_max); + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_ieee_type_v) + { + char cohort_buffer [formatting_limits::cohort_preserving_scientific_max_chars]; + const auto r_cohort_max {to_chars(cohort_buffer, cohort_buffer + sizeof(cohort_buffer), maximum_value, chars_format::cohort_preserving_scientific)}; + BOOST_TEST(r_cohort_max); + } } template @@ -1047,28 +1055,33 @@ void test_formatting_limits_min() char scientific_buffer [formatting_limits::scientific_format_max_chars]; char fixed_buffer [formatting_limits::fixed_format_max_chars]; char hex_buffer [formatting_limits::hex_format_max_chars]; - char cohort_buffer [formatting_limits::cohort_preserving_scientific_max_chars]; - const auto r_sci_max {to_chars(scientific_buffer, scientific_buffer + sizeof(scientific_buffer), minimum_value)}; + const auto r_sci_max {to_chars(scientific_buffer, scientific_buffer + sizeof(scientific_buffer), minimum_value, chars_format::scientific)}; BOOST_TEST(r_sci_max); - BOOST_TEST(r_sci_max.ptr == scientific_buffer + sizeof(scientific_buffer)); + BOOST_TEST(r_sci_max.ptr + 1 == scientific_buffer + sizeof(scientific_buffer)); // +1 for null term - const auto r_fixed_max {to_chars(fixed_buffer, fixed_buffer + sizeof(fixed_buffer), minimum_value)}; + const auto r_fixed_max {to_chars(fixed_buffer, fixed_buffer + sizeof(fixed_buffer), minimum_value, chars_format::fixed)}; BOOST_TEST(r_fixed_max); - BOOST_TEST(r_fixed_max.ptr == fixed_buffer + sizeof(fixed_buffer)); + BOOST_TEST(r_fixed_max.ptr + 2 == fixed_buffer + sizeof(fixed_buffer)); // +2 for null term and decimal point - const auto r_hex_max {to_chars(hex_buffer, hex_buffer + sizeof(hex_buffer), minimum_value)}; + const auto r_hex_max {to_chars(hex_buffer, hex_buffer + sizeof(hex_buffer), minimum_value, chars_format::hex)}; BOOST_TEST(r_hex_max); - BOOST_TEST(r_hex_max.ptr == hex_buffer + sizeof(hex_buffer)); - const auto r_cohort_max {to_chars(cohort_buffer, cohort_buffer + sizeof(cohort_buffer), minimum_value)}; - BOOST_TEST(r_cohort_max); - BOOST_TEST(r_cohort_max.ptr == cohort_buffer + sizeof(cohort_buffer)); + BOOST_DECIMAL_IF_CONSTEXPR (detail::is_ieee_type_v) + { + char cohort_buffer [formatting_limits::cohort_preserving_scientific_max_chars]; + const auto r_cohort_max {to_chars(cohort_buffer, cohort_buffer + sizeof(cohort_buffer), minimum_value, chars_format::cohort_preserving_scientific)}; + BOOST_TEST(r_cohort_max); + BOOST_TEST(r_cohort_max.ptr + 1 == cohort_buffer + sizeof(cohort_buffer)); // +1 for null term + } } +#ifdef _MSC_VER +# pragma warning(pop) +#endif + int main() { - // TODO(mborland): While building out sticky bits this is the best way to synchronize results across types #ifdef BOOST_DECIMAL_NO_CONSTEVAL_DETECTION return 0; #else @@ -1245,14 +1258,12 @@ int main() test_formatting_limits_max(); test_formatting_limits_max(); - /* test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); test_formatting_limits_min(); - */ return boost::report_errors(); } From 74a6b39ffc1c80e91a566bfc4b95b53d624db4f8 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 12:43:26 +0100 Subject: [PATCH 633/967] Re-write the charconv example --- examples/charconv.cpp | 103 +++++++++++++++++++++++++++++++++++------- 1 file changed, 86 insertions(+), 17 deletions(-) diff --git a/examples/charconv.cpp b/examples/charconv.cpp index feec96662..27f32f794 100644 --- a/examples/charconv.cpp +++ b/examples/charconv.cpp @@ -1,31 +1,100 @@ // Copyright 2024 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// +// This file demonstrates the various ways that support can be used with the decimal library +// NOTE: need not be included to use this functionality -#include -#include -#include +#include // For the type decimal64_t +#include // For support +#include // For decimal support +#include // +#include // For std::strlen int main() { - using namespace boost::decimal; + using boost::decimal::decimal64_t; // The type decimal64_t + using boost::decimal::to_chars; // The to_chars functions + using boost::decimal::to_chars_result; // The return type of to_chars + using boost::decimal::from_chars; // The from_chars functions + using boost::decimal::from_chars_result;// The return type of from_chars + using boost::decimal::chars_format; // The enum class of the different formatting options + using boost::decimal::formatting_limits;// Allows the user to correctly size buffers - decimal64_t val {0.25}; // Construction from a double (not recommended but explicit construction is allowed) + const char* initial_value {"-7.12345e+06"}; - char buffer[256]; - auto r_to = to_chars(buffer, buffer + sizeof(buffer) - 1, val); - assert(r_to); // checks std::errc() - *r_to.ptr = '\0'; + decimal64_t initial_decimal; + const from_chars_result r_initial {from_chars(initial_value, initial_value + std::strlen(initial_value), initial_decimal)}; - decimal64_t return_value; - BOOST_DECIMAL_ATTRIBUTE_UNUSED auto r_from = from_chars(buffer, buffer + std::strlen(buffer), return_value); - assert(r_from); + // from_chars_result contains a value of std::errc, but also has a bool operator for better checks like this + // Regular should be getting this bool operator in C++26 + if (!r_initial) + { + // LCOV_EXCL_START + // Here you can handle an error condition in any way you see fit + // For the purposes of our example we log and abort + std::cout << "Unexpected failure" << std::endl; + return 1; + // LCOV_EXCL_STOP + } + else + { + std::cout << "Initial decimal: " << initial_decimal << '\n'; + } - assert(val == return_value); + // boost::decimal::from_chars deviates from the C++ standard by allowing a std::string, + // or a std::string_view (when available) + // + // It is also perfectly acceptable to use an auto return type for even more brevity when using from_chars + const std::string string_value {"3.1415"}; + decimal64_t string_decimal; + const auto r_string {from_chars(string_value, string_decimal)}; + if (r_string) + { + std::cout << "Value from string: " << string_decimal << '\n'; + } - std::cout << " Initial Value: " << val << '\n' - << "Returned Value: " << return_value << std::endl; + // We can now compare the various ways to print the value + // First we will review the formatting_limits struct + // This struct contains a number of members that allow the to_chars buffer to be correctly sized + // + // First formatting_limits takes a type and optionally a precision as template parameters + // It then has members each corresponding to the maximum number of characters needed to print the type + // + // 1) scientific_format_max_chars + // 2) fixed_format_max_chars + // 3) hex_format_max_chars + // 4) cohort_preserving_scientific_max_chars + // 5) general_format_max_chars + // 6) max_chars - Equal to the maximum value of 1 to 5 to allow to_chars of any format + // + // Each of these will give you one additional character so you can write a null terminator to the end + // NOTE: to_chars IS NOT default null terminated - return 0; -} + char scientific_buffer[formatting_limits::scientific_format_max_chars]; + const to_chars_result r_sci {to_chars(scientific_buffer, + scientific_buffer + sizeof(scientific_buffer), initial_decimal, chars_format::scientific)}; + if (r_sci) + { + *r_sci.ptr = '\0'; // to_chars does not null terminate per the C++ standard + std::cout << "Value in scientific format: " << scientific_buffer << '\n'; + } + // else handle the error how you would like + + // If we went to print the value to some specified precision our buffer will need more space + // Formatting limits takes a precision in this case + // + // Also as with from_chars it's perfectly fine to use an auto return type with to_chars + constexpr int required_precision {20}; + char precision_20_scientific_buffer[formatting_limits::scientific_format_max_chars]; + const auto r_sci20 {to_chars(precision_20_scientific_buffer, + precision_20_scientific_buffer + sizeof(precision_20_scientific_buffer), + initial_decimal, chars_format::scientific, required_precision)}; + if (r_sci20) + { + *r_sci20.ptr = '\0'; + std::cout << "Value in scientific format with precision 20: " << precision_20_scientific_buffer << '\n'; + } + // else handle the error how you would like +} From a5f3bf923d9f6bdf6d134f887f99ec2a2e244cf6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 12:46:05 +0100 Subject: [PATCH 634/967] Port to examples documentation and add expected output --- doc/modules/ROOT/pages/examples.adoc | 117 ++++++++++++++++++++++----- 1 file changed, 96 insertions(+), 21 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 188d12fa7..18814abb1 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -13,7 +13,7 @@ All examples can be found in the library `examples/` folder as well. [#examples_construction] == Basic construction -This exammple can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/basic_construction.cpp[basic_construction.cpp] +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/basic_construction.cpp[basic_construction.cpp] [source, c++] ---- @@ -165,39 +165,114 @@ int main() [#examples_charconv] == charconv +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/charconv.cpp[charconv.cpp] + [source, c++] ---- -#include -#include -#include +// This file demonstrates the various ways that support can be used with the decimal library +// NOTE: need not be included to use this functionality + +#include // For the type decimal64_t +#include // For support +#include // For decimal support +#include // +#include // For std::strlen int main() { - using namespace boost::decimal; - - decimal64_t val {0.25}; // Construction from a double (not recommended but explicit construction is allowed) - - char buffer[256]; - auto r_to = to_chars(buffer, buffer + sizeof(buffer) - 1, val); - assert(r_to); // checks std::errc() - *r_to.ptr = '\0'; + using boost::decimal::decimal64_t; // The type decimal64_t + using boost::decimal::to_chars; // The to_chars functions + using boost::decimal::to_chars_result; // The return type of to_chars + using boost::decimal::from_chars; // The from_chars functions + using boost::decimal::from_chars_result;// The return type of from_chars + using boost::decimal::chars_format; // The enum class of the different formatting options + using boost::decimal::formatting_limits;// Allows the user to correctly size buffers + + const char* initial_value {"-7.12345e+06"}; + + decimal64_t initial_decimal; + const from_chars_result r_initial {from_chars(initial_value, initial_value + std::strlen(initial_value), initial_decimal)}; + + // from_chars_result contains a value of std::errc, but also has a bool operator for better checks like this + // Regular should be getting this bool operator in C++26 + if (!r_initial) + { + // LCOV_EXCL_START + // Here you can handle an error condition in any way you see fit + // For the purposes of our example we log and abort + std::cout << "Unexpected failure" << std::endl; + return 1; + // LCOV_EXCL_STOP + } + else + { + std::cout << "Initial decimal: " << initial_decimal << '\n'; + } - decimal64_t return_value; - auto r_from = from_chars(buffer, buffer + std::strlen(buffer), return_value); - assert(r_from); + // boost::decimal::from_chars deviates from the C++ standard by allowing a std::string, + // or a std::string_view (when available) + // + // It is also perfectly acceptable to use an auto return type for even more brevity when using from_chars + const std::string string_value {"3.1415"}; + decimal64_t string_decimal; + const auto r_string {from_chars(string_value, string_decimal)}; + if (r_string) + { + std::cout << "Value from string: " << string_decimal << '\n'; + } - assert(val == return_value); + // We can now compare the various ways to print the value + // First we will review the formatting_limits struct + // This struct contains a number of members that allow the to_chars buffer to be correctly sized + // + // First formatting_limits takes a type and optionally a precision as template parameters + // It then has members each corresponding to the maximum number of characters needed to print the type + // + // 1) scientific_format_max_chars + // 2) fixed_format_max_chars + // 3) hex_format_max_chars + // 4) cohort_preserving_scientific_max_chars + // 5) general_format_max_chars + // 6) max_chars - Equal to the maximum value of 1 to 5 to allow to_chars of any format + // + // Each of these will give you one additional character so you can write a null terminator to the end + // NOTE: to_chars IS NOT default null terminated - std::cout << " Initial Value: " << val << '\n' - << "Returned Value: " << return_value << std::endl; + char scientific_buffer[formatting_limits::scientific_format_max_chars]; + const to_chars_result r_sci {to_chars(scientific_buffer, + scientific_buffer + sizeof(scientific_buffer), initial_decimal, chars_format::scientific)}; + if (r_sci) + { + *r_sci.ptr = '\0'; // to_chars does not null terminate per the C++ standard + std::cout << "Value in scientific format: " << scientific_buffer << '\n'; + } + // else handle the error how you would like - return 0; + // If we went to print the value to some specified precision our buffer will need more space + // Formatting limits takes a precision in this case + // + // Also as with from_chars it's perfectly fine to use an auto return type with to_chars + constexpr int required_precision {20}; + char precision_20_scientific_buffer[formatting_limits::scientific_format_max_chars]; + const auto r_sci20 {to_chars(precision_20_scientific_buffer, + precision_20_scientific_buffer + sizeof(precision_20_scientific_buffer), + initial_decimal, chars_format::scientific, required_precision)}; + + if (r_sci20) + { + *r_sci20.ptr = '\0'; + std::cout << "Value in scientific format with precision 20: " << precision_20_scientific_buffer << '\n'; + } + // else handle the error how you would like } + ---- Output: ---- - Initial Value: 0.25 -Returned Value: 0.25 +Initial decimal: -7123450 +Value from string: 3.1415 +Value in scientific format: -7.12345e+06 +Value in scientific format with precision 20: -7.12345000000000000000e+06 ---- [#examples_generic_programming] From a62fe10a27b149a6bc5a4e3175bf39af8b5ec300 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 13:51:56 +0100 Subject: [PATCH 635/967] Remove LCOV annotations --- doc/modules/ROOT/pages/examples.adoc | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 18814abb1..665fbe904 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -139,27 +139,11 @@ Can not construct from invalid string ---- [#examples_promotion] -== Promotion +== Promotion and Mixed Decimal Arithmetic [source, c++] ---- -#include -#include -#include - -int main() -{ - using namespace boost::decimal; - decimal32_t x {1}; // Constructs from an integer - decimal64_t y {2}; - - auto sum {x + y}; - - assert(std::is_same::value); - - return 0; -} ---- [#examples_charconv] @@ -197,12 +181,10 @@ int main() // Regular should be getting this bool operator in C++26 if (!r_initial) { - // LCOV_EXCL_START // Here you can handle an error condition in any way you see fit // For the purposes of our example we log and abort std::cout << "Unexpected failure" << std::endl; return 1; - // LCOV_EXCL_STOP } else { From 0ee1728de8c1ceb94592a946dde44f596fc3b63a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 13:52:10 +0100 Subject: [PATCH 636/967] Add promotion example and run it in the CI system --- examples/promotion.cpp | 60 ++++++++++++++++++++++++++++++++++++++++++ test/Jamfile | 1 + 2 files changed, 61 insertions(+) create mode 100644 examples/promotion.cpp diff --git a/examples/promotion.cpp b/examples/promotion.cpp new file mode 100644 index 000000000..e851d6c90 --- /dev/null +++ b/examples/promotion.cpp @@ -0,0 +1,60 @@ +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// This file briefly demonstrates the results of mixed decimal comparisons and arithmetic + +#include // For the type decimal32_t +#include // For the type decimal64_t +#include // For decimal type support to +#include +#include + +int main() +{ + using boost::decimal::decimal32_t; + using boost::decimal::decimal64_t; + using boost::decimal::decimal128_t; + + // First construct two values that we will perform arithmetic with + const decimal32_t a {"5.2"}; + const decimal64_t b {"3.9"}; + + std::cout << "decimal32_t value (a): " << a << '\n' + << "decimal64_t value (b): " << b << '\n'; + + // Mixed decimal comparisons are allowed by default + if (a > b) + { + std::cout << "a is greater than b" << '\n'; + } + + // Even comparison of unrepresentable values is fine + // For example decimal32_t can't represent decimal64_t max value + constexpr decimal64_t dec64_max {std::numeric_limits::max()}; + if (a < dec64_max) + { + std::cout << a << " is less than " << dec64_max << '\n'; + } + + // Danger awaits if you decide to do this yourself instead of letting the system do it for you, + // since in this example the two should compare equal but overflowing decimal32_t makes infinity + if (static_cast(dec64_max) < dec64_max) + { + std::cout << dec64_max << " is less than " << static_cast(dec64_max) << '\n'; + } + + // With mixed operations like +, -, *, / we promote to the higher precision type + // Example: decimal32_t + decimal64_t -> decimal64_t + + // We use auto here for two reasons + // 1) To demonstrate that it's safe + // 2) To show the promotion with the conditional logic that follows + const auto c {a + b}; + using c_type = std::remove_cv_t; // We used const auto so the result is const decimal64_t + + static_assert(std::is_same::value, "decimal32_t + decimal64_t is supposed to yield decimal64_t"); + std::cout << "The result of a + b is a decimal64_t: " << c << '\n'; + + return 0; +} diff --git a/test/Jamfile b/test/Jamfile index 1fcfcaf18..8462b2d14 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -205,6 +205,7 @@ run ../examples/statistics.cpp ; run ../examples/format.cpp ; run ../examples/fmt_format.cpp ; run ../examples/print.cpp ; +run ../examples/promotion.cpp ; # Test compilation of separate headers compile compile_tests/bid_conversion.cpp ; From 741e0aa49692d1aacf0520c38c837ffd5402d9f0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 13:56:40 +0100 Subject: [PATCH 637/967] Improve mixed decimal arithmetic and promotion example --- doc/modules/ROOT/pages/examples.adoc | 66 ++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 665fbe904..da76574a8 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -141,9 +141,75 @@ Can not construct from invalid string [#examples_promotion] == Promotion and Mixed Decimal Arithmetic +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/promotion.cpp[promotion.cpp] + [source, c++] ---- +// This file briefly demonstrates the results of mixed decimal comparisons and arithmetic + +#include // For the type decimal32_t +#include // For the type decimal64_t +#include // For decimal type support to +#include +#include + +int main() +{ + using boost::decimal::decimal32_t; + using boost::decimal::decimal64_t; + using boost::decimal::decimal128_t; + // First construct two values that we will perform arithmetic with + const decimal32_t a {"5.2"}; + const decimal64_t b {"3.9"}; + + std::cout << "decimal32_t value (a): " << a << '\n' + << "decimal64_t value (b): " << b << '\n'; + + // Mixed decimal comparisons are allowed by default + if (a > b) + { + std::cout << "a is greater than b" << '\n'; + } + + // Even comparison of unrepresentable values is fine + // For example decimal32_t can't represent decimal64_t max value + constexpr decimal64_t dec64_max {std::numeric_limits::max()}; + if (a < dec64_max) + { + std::cout << a << " is less than " << dec64_max << '\n'; + } + + // Danger awaits if you decide to do this yourself instead of letting the system do it for you, + // since in this example the two should compare equal but overflowing decimal32_t makes infinity + if (static_cast(dec64_max) < dec64_max) + { + std::cout << dec64_max << " is less than " << static_cast(dec64_max) << '\n'; + } + + // With mixed operations like +, -, *, / we promote to the higher precision type + // Example: decimal32_t + decimal64_t -> decimal64_t + + // We use auto here for two reasons + // 1) To demonstrate that it's safe + // 2) To show the promotion with the conditional logic that follows + const auto c {a + b}; + using c_type = std::remove_cv_t; // We used const auto so the result is const decimal64_t + + static_assert(std::is_same::value, "decimal32_t + decimal64_t is supposed to yield decimal64_t"); + std::cout << "The result of a + b is a decimal64_t: " << c << '\n'; + + return 0; +} +---- +Expected Output: +---- +decimal32_t value (a): 5.2 +decimal64_t value (b): 3.9 +a is greater than b +5.2 is less than 1e+385 +1e+385 is now less than inf +The result of a + b is a decimal64_t: 9.1 ---- [#examples_charconv] From 301f99afee492f82b9b03cb8a53195b53f81d5f0 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 14:01:03 +0100 Subject: [PATCH 638/967] Use cross reference for example to the actual charconv page --- doc/modules/ROOT/pages/charconv.adoc | 25 +------------------------ doc/modules/ROOT/pages/examples.adoc | 2 +- 2 files changed, 2 insertions(+), 25 deletions(-) diff --git a/doc/modules/ROOT/pages/charconv.adoc b/doc/modules/ROOT/pages/charconv.adoc index 20f09b46e..181b418ee 100644 --- a/doc/modules/ROOT/pages/charconv.adoc +++ b/doc/modules/ROOT/pages/charconv.adoc @@ -193,27 +193,4 @@ This class allows you to size buffers for `to_chars` without have to arbitrarily The `Precision` is defaulted to the maximum precision of the type, which is the same assumption that is made when you use `to_chars` with an unspecified precision. The `max_chars` variable is the largest of the 5 specified `chars_format` options. -The members can then be used to size buffers such as: - -[source, c++] ----- -#include -#include - -int main() -{ - using namespace boost::decimal; - - decimal32_t val {5, -1}; - - char buffer[formatting_limits::max_chars]; - - auto r_to = to_chars(buffer, buffer + sizeof(buffer), val); - *r_to.ptr = '\0'; - - std::cout << buffer << std::endl; - - return 0; -} - ----- +The members can then be used to size buffers such as in our `` example from the main examples page xref:examples.adoc#examples_charconv[here]. diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index da76574a8..fd95067dd 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -213,7 +213,7 @@ The result of a + b is a decimal64_t: 9.1 ---- [#examples_charconv] -== charconv +== `` This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/charconv.cpp[charconv.cpp] From f156481def1dd2bef020d5353e7e4ffdf84b1a14 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 14:28:32 +0100 Subject: [PATCH 639/967] Use the pass macro from C++ --- doc/modules/ROOT/pages/cmath.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 6e4e6c26c..67b0b2523 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -9,7 +9,7 @@ https://www.boost.org/LICENSE_1_0.txt :idprefix: cmath_ Decimal contains overloads for all functions from ``, and they have the same handling as built-in floating point types. -They are also all constexpr with C\\++14 unlike the built-in floating point types which require either C++23 or 26. +They are also all constexpr with pass:[C++14] unlike the built-in floating point types which require either pass:[C++23] or 26. Additionally, all functions are marked `noexcept`. All of these functions are impacted by the global rounding mode as described in xref:cfenv.adoc[rounding modes] as well as the `DEC_FLT_EVAL_METHOD` from xref:cfloat.adoc[evaluation methods]. From 037dd8fd7cf03d0e76d685591f455823a8631538 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 14:32:04 +0100 Subject: [PATCH 640/967] Add draft cohorts page and update xrefs --- doc/modules/ROOT/nav.adoc | 1 + doc/modules/ROOT/pages/cmath.adoc | 2 +- doc/modules/ROOT/pages/cohorts.adoc | 9 +++++++++ 3 files changed, 11 insertions(+), 1 deletion(-) create mode 100644 doc/modules/ROOT/pages/cohorts.adoc diff --git a/doc/modules/ROOT/nav.adoc b/doc/modules/ROOT/nav.adoc index 6b9bc258d..7ef07b996 100644 --- a/doc/modules/ROOT/nav.adoc +++ b/doc/modules/ROOT/nav.adoc @@ -27,6 +27,7 @@ ** xref:decimal_fast32_t.adoc[] ** xref:decimal_fast64_t.adoc[] ** xref:decimal_fast128_t.adoc[] +* xref:cohorts.adoc[] * xref:conversions.adoc[] * xref:literals.adoc[] * xref:numbers.adoc[] diff --git a/doc/modules/ROOT/pages/cmath.adoc b/doc/modules/ROOT/pages/cmath.adoc index 67b0b2523..98c89e535 100644 --- a/doc/modules/ROOT/pages/cmath.adoc +++ b/doc/modules/ROOT/pages/cmath.adoc @@ -679,7 +679,7 @@ constexpr Decimal normalize(Decimal val) noexcept; ---- Similar to the `frexp10` function above, but rather than returning the normalized significand, and exponent of the Decimal number, it returns a normalized number. -This removes the effects of xref:basics.adoc[cohorts] on the IEEE 754 compliant types. +This removes the effects of xref:cohorts.adoc[cohorts] on the IEEE 754 compliant types which for the example of `decimal32_t` means the significand will be in the range [1'000'000, 9'999'999]. This function has *NO* effect on fast types since they are always normalized internally. === `rescale` diff --git a/doc/modules/ROOT/pages/cohorts.adoc b/doc/modules/ROOT/pages/cohorts.adoc new file mode 100644 index 000000000..15a1118f6 --- /dev/null +++ b/doc/modules/ROOT/pages/cohorts.adoc @@ -0,0 +1,9 @@ +//// +Copyright 2025 Matt Borland +Distributed under the Boost Software License, Version 1.0. +https://www.boost.org/LICENSE_1_0.txt +//// + +[#cohorts] += Cohorts +:idprefix: cohorts_ From 1bab586d92083b1c1d205a379ff981b2eccdf515 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 14:45:54 +0100 Subject: [PATCH 641/967] Add additional annotations --- examples/charconv_cohort_preservation.cpp | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/examples/charconv_cohort_preservation.cpp b/examples/charconv_cohort_preservation.cpp index 1d437be04..3e84c6605 100644 --- a/examples/charconv_cohort_preservation.cpp +++ b/examples/charconv_cohort_preservation.cpp @@ -2,7 +2,9 @@ // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt -#include +#include // For the type decimal32_t +#include // For decimal support for +#include // For decimal support for #include #include #include @@ -35,7 +37,9 @@ constexpr std::array strings = { int main() { - using namespace boost::decimal; + using boost::decimal::decimal32_t; + using boost::decimal::from_chars; + using boost::decimal::chars_format; // In some instances we want to preserve the cohort of our values // In the above strings array all of these values compare equal, From 4d0fbb91af4350ce51256922e406e9d77ae0d47e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 15:30:47 +0100 Subject: [PATCH 642/967] Fix dependency failure --- doc/package-lock.json | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/doc/package-lock.json b/doc/package-lock.json index 8e24930fb..b40fc22fd 100644 --- a/doc/package-lock.json +++ b/doc/package-lock.json @@ -4,6 +4,7 @@ "requires": true, "packages": { "": { + "name": "doc", "devDependencies": { "@antora/cli": "3.1.10", "@antora/site-generator": "3.1.10", @@ -445,10 +446,11 @@ ] }, "node_modules/brace-expansion": { - "version": "1.1.11", - "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz", - "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==", + "version": "1.1.12", + "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz", + "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==", "dev": true, + "license": "MIT", "dependencies": { "balanced-match": "^1.0.0", "concat-map": "0.0.1" @@ -1503,6 +1505,7 @@ "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz", "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==", "dev": true, + "peer": true, "engines": { "node": ">=0.4.0" } From 49fa5d00c1412fd2e9be776af0aa0f71d08e8f2a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 15:40:48 +0100 Subject: [PATCH 643/967] Add cohort page to docs --- doc/modules/ROOT/pages/cohorts.adoc | 134 ++++++++++++++++++++++ doc/modules/ROOT/pages/overview.adoc | 1 + examples/charconv_cohort_preservation.cpp | 2 + 3 files changed, 137 insertions(+) diff --git a/doc/modules/ROOT/pages/cohorts.adoc b/doc/modules/ROOT/pages/cohorts.adoc index 15a1118f6..d9b809660 100644 --- a/doc/modules/ROOT/pages/cohorts.adoc +++ b/doc/modules/ROOT/pages/cohorts.adoc @@ -7,3 +7,137 @@ https://www.boost.org/LICENSE_1_0.txt [#cohorts] = Cohorts :idprefix: cohorts_ + +As stated in the library overview, one of the major differences between binary floating point and decimal floating point is the existence of cohorts. +From IEEE 754-2008: "The set of representations a floating-point number maps to is called the floating-point +number’s cohort; the members of a cohort are distinct representations of the same floating-point number." + +For example `decimal32_t` has a precision of 7. +That means all the following are valid ways to represent the number 300 using that type: + +. 3e+2 +. 30e+1 +. 300e+0 +. 3000e-1 +. 30000e-2 +. 300000e-3 +. 3000000e-4 + +These values can be useful in certain applications, like preserving the precision of results. +By default, most methods *DO NOT* observe cohorts. +Below is an example of how cohorts can be preserved if one so wishes. + +== Cohort Preserving `` Example + +[source, c++] +---- +// This file demonstrates the effects of cohorts and how to maintain them with + +#include // For the type decimal32_t +#include // For decimal support for +#include // For decimal support for +#include +#include +#include +#include + +static constexpr std::size_t N {7}; + +// All the following decimal values will compare equal, +// but since they have different numbers of 0s in the significand they will not be bitwise equal +constexpr std::array decimals = { + boost::decimal::decimal32_t{3, 2}, + boost::decimal::decimal32_t{30, 1}, + boost::decimal::decimal32_t{300, 0}, + boost::decimal::decimal32_t{3000, -1}, + boost::decimal::decimal32_t{30000, -2}, + boost::decimal::decimal32_t{300000, -3}, + boost::decimal::decimal32_t{3000000, -4}, +}; + +// These strings represent the same values as the constructed ones shown above +constexpr std::array strings = { + "3e+02", + "3.0e+02", + "3.00e+02", + "3.000e+02", + "3.0000e+02", + "3.00000e+02", + "3.000000e+02", +}; + +int main() +{ + using boost::decimal::decimal32_t; + using boost::decimal::from_chars; + using boost::decimal::chars_format; + + // In some instances we want to preserve the cohort of our values + // In the above strings array all of these values compare equal, + // but will NOT be bitwise equal once constructed. + + for (std::size_t i = 0; i < N; ++i) + { + decimal32_t string_val; + const auto r_from = from_chars(strings[i], string_val, chars_format::cohort_preserving_scientific); + + if (!r_from) + { + // Unexpected failure + return 1; + } + + for (std::size_t j = 0; j < N; ++j) + { + // Now that we have constructed a value from string + // we can compare it bitwise to all the members of the decimal array + // to show the difference between operator== and bitwise equality + // + // All members of a cohort are supposed to compare equal with operator==, + // and likewise will hash equal to + std::uint32_t string_val_bits; + std::uint32_t constructed_val_bits; + + std::memcpy(&string_val_bits, &string_val, sizeof(string_val_bits)); + std::memcpy(&constructed_val_bits, &decimals[j], sizeof(constructed_val_bits)); + + if (string_val == decimals[j]) + { + std::cout << "Values are equal and "; + if (string_val_bits == constructed_val_bits) + { + std::cout << "bitwise equal.\n"; + } + else + { + std::cout << "NOT bitwise equal.\n"; + } + } + } + + // The same chars_format option applies to to_chars which allows us to roundtrip the values + char buffer[64] {}; + const auto r_to = to_chars(buffer, buffer + sizeof(buffer), string_val, chars_format::cohort_preserving_scientific); + + if (!r_to) + { + // Unexpected failure + return 1; + } + + *r_to.ptr = '\0'; // charconv does not null terminate per the C++ specification + + if (std::strcmp(strings[i], buffer) == 0) + { + std::cout << "Successful Roundtrip\n\n"; + } + else + { + std::cout << "Failed\n\n"; + return 1; + } + } + + return 0; +} +---- diff --git a/doc/modules/ROOT/pages/overview.adoc b/doc/modules/ROOT/pages/overview.adoc index 7a750c40a..ef60280c8 100644 --- a/doc/modules/ROOT/pages/overview.adoc +++ b/doc/modules/ROOT/pages/overview.adoc @@ -23,6 +23,7 @@ Decimal floating point numbers avoid this issue by storing the significand in ba The other major difference between binary and decimal floating point types is that the latter allows for multiple representations of the same number. For example 1e5 could also be stored as 0.1e6, 0.01e7, so on and so forth. These are referred to as cohorts which binary does not have as there is only one way to represent each number in binary floating point. +For more information on cohorts please see the xref:cohorts.adoc[cohort section] of the documentation. == Use Cases diff --git a/examples/charconv_cohort_preservation.cpp b/examples/charconv_cohort_preservation.cpp index 3e84c6605..3ac56c8f9 100644 --- a/examples/charconv_cohort_preservation.cpp +++ b/examples/charconv_cohort_preservation.cpp @@ -1,6 +1,8 @@ // Copyright 2025 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// +// This file demonstrates the effects of cohorts and how to maintain them with #include // For the type decimal32_t #include // For decimal support for From afb9c22c0bace7cacbf9b6a429a7fe6eac2b8608 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Mon, 10 Nov 2025 20:15:30 +0100 Subject: [PATCH 644/967] Change location of constructor definition for old clangs --- include/boost/decimal/decimal32_t.hpp | 90 +++++++++++++++------------ include/boost/decimal/decimal64_t.hpp | 87 ++++++++++++++------------ 2 files changed, 96 insertions(+), 81 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index b30cb759c..930b63e78 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -819,47 +819,6 @@ constexpr decimal32_t::decimal32_t(const T1 coeff, const T2 exp) noexcept : deci constexpr decimal32_t::decimal32_t(const bool value) noexcept : decimal32_t(static_cast(value), 0, false) {} -#if !defined(BOOST_DECIMAL_DISABLE_CLIB) - -constexpr decimal32_t::decimal32_t(const char* str, const std::size_t len) -{ - if (str == nullptr || len == 0) - { - bits_ = detail::d32_nan_mask; - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - return; // LCOV_EXCL_LINE - } - - // Normally plus signs aren't allowed - auto first {str}; - if (*first == '+') - { - ++first; - } - - decimal32_t v; - const auto r {from_chars(first, str + len, v)}; - if (r) - { - *this = v; - } - else - { - bits_ = detail::d32_nan_mask; - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - } -} - -constexpr decimal32_t::decimal32_t(const char* str) : decimal32_t(str, detail::strlen(str)) {} - -#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW -inline decimal32_t::decimal32_t(const std::string& str) : decimal32_t(str.c_str(), str.size()) {} -#else -constexpr decimal32_t::decimal32_t(std::string_view str) : decimal32_t(str.data(), str.size()) {} -#endif - -#endif // BOOST_DECIMAL_DISABLE_CLIB - constexpr auto from_bits(const std::uint32_t bits) noexcept -> decimal32_t { decimal32_t result; @@ -2389,6 +2348,55 @@ class numeric_limits : } // Namespace std +// TODO(mborland): Break charconv up since we only need the from_chars implementation here +// Probably shouldn't be bringing in everything #include +namespace boost { +namespace decimal { + +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + +constexpr decimal32_t::decimal32_t(const char* str, const std::size_t len) +{ + if (str == nullptr || len == 0) + { + bits_ = detail::d32_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal32_t v; + const auto r {from_chars(first, str + len, v)}; + if (r) + { + *this = v; + } + else + { + bits_ = detail::d32_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal32_t::decimal32_t(const char* str) : decimal32_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal32_t::decimal32_t(const std::string& str) : decimal32_t(str.c_str(), str.size()) {} +#else +constexpr decimal32_t::decimal32_t(std::string_view str) : decimal32_t(str.data(), str.size()) {} +#endif + +#endif // BOOST_DECIMAL_DISABLE_CLIB + +} // namespace decimal +} // namespace boost + #endif // BOOST_DECIMAL_decimal32_t_HPP diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index 59d2cf511..ece541a03 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -913,46 +913,6 @@ constexpr auto decimal64_t::operator=(const Integer& val) noexcept return *this; } -#if !defined(BOOST_DECIMAL_DISABLE_CLIB) -constexpr decimal64_t::decimal64_t(const char* str, std::size_t len) -{ - if (str == nullptr || len == 0) - { - bits_ = detail::d64_nan_mask; - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - return; // LCOV_EXCL_LINE - } - - // Normally plus signs aren't allowed - auto first {str}; - if (*first == '+') - { - ++first; - } - - decimal64_t v; - const auto r {from_chars(first, str + len, v)}; - if (r) - { - *this = v; - } - else - { - bits_ = detail::d64_nan_mask; - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - } -} - -constexpr decimal64_t::decimal64_t(const char* str) : decimal64_t(str, detail::strlen(str)) {} - -#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW -inline decimal64_t::decimal64_t(const std::string& str) : decimal64_t(str.c_str(), str.size()) {} -#else -constexpr decimal64_t::decimal64_t(std::string_view str) : decimal64_t(str.data(), str.size()) {} -#endif - -#endif // BOOST_DECIMAL_DISABLE_CLIB - constexpr decimal64_t::operator bool() const noexcept { constexpr decimal64_t zero {0, 0}; @@ -2299,4 +2259,51 @@ class numeric_limits : #include +namespace boost { +namespace decimal { + +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + +constexpr decimal64_t::decimal64_t(const char* str, std::size_t len) +{ + if (str == nullptr || len == 0) + { + bits_ = detail::d64_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal64_t v; + const auto r {from_chars(first, str + len, v)}; + if (r) + { + *this = v; + } + else + { + bits_ = detail::d64_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal64_t::decimal64_t(const char* str) : decimal64_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal64_t::decimal64_t(const std::string& str) : decimal64_t(str.c_str(), str.size()) {} +#else +constexpr decimal64_t::decimal64_t(std::string_view str) : decimal64_t(str.data(), str.size()) {} +#endif + +#endif // BOOST_DECIMAL_DISABLE_CLIB + +} // namespace decimal +} // namespace boost + #endif //BOOST_DECIMAL_decimal64_t_HPP From 7d0b3c76a8fe7741b9bfe9d724383b4d9611c580 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Tue, 11 Nov 2025 09:12:44 +0100 Subject: [PATCH 645/967] Disable example related to now open issue --- test/Jamfile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/Jamfile b/test/Jamfile index 8462b2d14..c8908adcb 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -205,7 +205,7 @@ run ../examples/statistics.cpp ; run ../examples/format.cpp ; run ../examples/fmt_format.cpp ; run ../examples/print.cpp ; -run ../examples/promotion.cpp ; +#run ../examples/promotion.cpp ; # Test compilation of separate headers compile compile_tests/bid_conversion.cpp ; From 979d71ea17e7f2f3b55b3a5c9d8ac50021b2ab90 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 10:46:12 +0100 Subject: [PATCH 646/967] Re-enable test --- test/Jamfile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/Jamfile b/test/Jamfile index c8908adcb..8462b2d14 100644 --- a/test/Jamfile +++ b/test/Jamfile @@ -205,7 +205,7 @@ run ../examples/statistics.cpp ; run ../examples/format.cpp ; run ../examples/fmt_format.cpp ; run ../examples/print.cpp ; -#run ../examples/promotion.cpp ; +run ../examples/promotion.cpp ; # Test compilation of separate headers compile compile_tests/bid_conversion.cpp ; From e1db7cb0dad5977e90fddb7109a3942c9abe4f24 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 10:46:17 +0100 Subject: [PATCH 647/967] Add missing header --- examples/promotion.cpp | 1 + 1 file changed, 1 insertion(+) diff --git a/examples/promotion.cpp b/examples/promotion.cpp index e851d6c90..1afbfbb7b 100644 --- a/examples/promotion.cpp +++ b/examples/promotion.cpp @@ -9,6 +9,7 @@ #include // For decimal type support to #include #include +#include int main() { From 108d2f60ed7c9a2c8bbd7a005b5455bb284b9027 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 10:50:47 +0100 Subject: [PATCH 648/967] Move the implementation of from_chars --- include/boost/decimal/charconv.hpp | 105 +-------------- .../boost/decimal/detail/from_chars_impl.hpp | 124 ++++++++++++++++++ 2 files changed, 127 insertions(+), 102 deletions(-) create mode 100644 include/boost/decimal/detail/from_chars_impl.hpp diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index 0ebd477a1..ca10222de 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -1,4 +1,4 @@ -// Copyright 2024 Matt Borland +// Copyright 2024 - 2025 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt @@ -28,6 +28,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include @@ -43,109 +44,9 @@ namespace boost { namespace decimal { // --------------------------------------------------------------------------------------------------------------------- -// from_chars and implementation +// from_chars // --------------------------------------------------------------------------------------------------------------------- -namespace detail { - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable:4127) -#endif - -template -constexpr auto from_chars_general_impl(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt) noexcept -> from_chars_result -{ - using significand_type = std::conditional_t<(std::numeric_limits::digits > - std::numeric_limits::digits), - int128::uint128_t, std::uint64_t>; - - BOOST_DECIMAL_IF_CONSTEXPR (is_fast_type_v) - { - if (fmt == chars_format::cohort_preserving_scientific) - { - return {first, std::errc::invalid_argument}; - } - } - - if (BOOST_DECIMAL_UNLIKELY(first >= last)) - { - return {first, std::errc::invalid_argument}; - } - - bool sign {}; - significand_type significand {}; - std::int32_t expval {}; - - auto r {detail::parser(first, last, sign, significand, expval, fmt)}; - - if (!r) - { - if (r.ec == std::errc::not_supported) - { - using resultant_sig_type = typename TargetDecimalType::significand_type; - - resultant_sig_type payload_value {}; - if (significand < std::numeric_limits::max()) - { - payload_value = static_cast(significand); - } - - if (expval > 0) - { - value = write_payload(payload_value); - } - else - { - value = write_payload(payload_value); - } - - if (sign) - { - value = -value; - } - - r.ec = std::errc(); - } - else if (r.ec == std::errc::value_too_large) - { - value = sign ? -std::numeric_limits::infinity() : - std::numeric_limits::infinity(); - r.ec = std::errc(); - } - else - { - value = std::numeric_limits::signaling_NaN(); - errno = static_cast(r.ec); - } - } - else - { - BOOST_DECIMAL_IF_CONSTEXPR (!is_fast_type_v) - { - if (fmt == chars_format::cohort_preserving_scientific) - { - const auto sig_digs {detail::num_digits(significand)}; - if (sig_digs > precision_v) - { - // If we are parsing more digits than are representable there's no concept of cohorts - return {last, std::errc::value_too_large}; - } - } - } - - value = TargetDecimalType(significand, expval, sign); - } - - return r; -} - -#ifdef _MSC_VER -# pragma warning(pop) -#endif - -} //namespace detail - template constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt) noexcept -> from_chars_result { diff --git a/include/boost/decimal/detail/from_chars_impl.hpp b/include/boost/decimal/detail/from_chars_impl.hpp new file mode 100644 index 000000000..47ed27a26 --- /dev/null +++ b/include/boost/decimal/detail/from_chars_impl.hpp @@ -0,0 +1,124 @@ +// Copyright 2024 - 2035 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt + +#ifndef BOOST_DECIMAL_DETAIL_FROM_CHARS_IMPL_HPP +#define BOOST_DECIMAL_DETAIL_FROM_CHARS_IMPL_HPP + +#include +#include +#include +#include +#include +#include + +#ifndef BOOST_DECIMAL_BUILD_MODULE +#include +#include +#endif + +namespace boost { +namespace decimal { +namespace detail { + +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable:4127) +#endif + +template +constexpr auto from_chars_general_impl(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt) noexcept -> from_chars_result +{ + using significand_type = std::conditional_t<(std::numeric_limits::digits > + std::numeric_limits::digits), + int128::uint128_t, std::uint64_t>; + + BOOST_DECIMAL_IF_CONSTEXPR (is_fast_type_v) + { + if (fmt == chars_format::cohort_preserving_scientific) + { + return {first, std::errc::invalid_argument}; + } + } + + if (BOOST_DECIMAL_UNLIKELY(first >= last)) + { + return {first, std::errc::invalid_argument}; + } + + bool sign {}; + significand_type significand {}; + std::int32_t expval {}; + + auto r {detail::parser(first, last, sign, significand, expval, fmt)}; + + if (!r) + { + if (r.ec == std::errc::not_supported) + { + using resultant_sig_type = typename TargetDecimalType::significand_type; + + resultant_sig_type payload_value {}; + if (significand < std::numeric_limits::max()) + { + payload_value = static_cast(significand); + } + + if (expval > 0) + { + value = write_payload(payload_value); + } + else + { + value = write_payload(payload_value); + } + + if (sign) + { + value = -value; + } + + r.ec = std::errc(); + } + else if (r.ec == std::errc::value_too_large) + { + value = sign ? -std::numeric_limits::infinity() : + std::numeric_limits::infinity(); + r.ec = std::errc(); + } + else + { + value = std::numeric_limits::signaling_NaN(); + errno = static_cast(r.ec); + } + } + else + { + BOOST_DECIMAL_IF_CONSTEXPR (!is_fast_type_v) + { + if (fmt == chars_format::cohort_preserving_scientific) + { + const auto sig_digs {detail::num_digits(significand)}; + if (sig_digs > precision_v) + { + // If we are parsing more digits than are representable there's no concept of cohorts + return {last, std::errc::value_too_large}; + } + } + } + + value = TargetDecimalType(significand, expval, sign); + } + + return r; +} + +#ifdef _MSC_VER +# pragma warning(pop) +#endif + +} // namespace detail +} // namespace decimal +} // namespace boost + +#endif // BOOST_DECIMAL_DETAIL_FROM_CHARS_IMPL_HPP From 297730fb81637e0810fef57b9c9519fde75d1f10 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:00:35 +0100 Subject: [PATCH 649/967] Use impl detail instead of pulling in all of --- include/boost/decimal/decimal32_t.hpp | 8 ++------ include/boost/decimal/decimal64_t.hpp | 6 ++---- 2 files changed, 4 insertions(+), 10 deletions(-) diff --git a/include/boost/decimal/decimal32_t.hpp b/include/boost/decimal/decimal32_t.hpp index 930b63e78..c4cf8a484 100644 --- a/include/boost/decimal/decimal32_t.hpp +++ b/include/boost/decimal/decimal32_t.hpp @@ -40,8 +40,8 @@ #include #include #include -#include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -2348,10 +2348,6 @@ class numeric_limits : } // Namespace std -// TODO(mborland): Break charconv up since we only need the from_chars implementation here -// Probably shouldn't be bringing in everything -#include - namespace boost { namespace decimal { @@ -2374,7 +2370,7 @@ constexpr decimal32_t::decimal32_t(const char* str, const std::size_t len) } decimal32_t v; - const auto r {from_chars(first, str + len, v)}; + const auto r {detail::from_chars_general_impl(first, str + len, v, chars_format::general)}; if (r) { *this = v; diff --git a/include/boost/decimal/decimal64_t.hpp b/include/boost/decimal/decimal64_t.hpp index ece541a03..278d08ec0 100644 --- a/include/boost/decimal/decimal64_t.hpp +++ b/include/boost/decimal/decimal64_t.hpp @@ -42,8 +42,8 @@ #include #include #include -#include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -2257,8 +2257,6 @@ class numeric_limits : } // Namespace std -#include - namespace boost { namespace decimal { @@ -2281,7 +2279,7 @@ constexpr decimal64_t::decimal64_t(const char* str, std::size_t len) } decimal64_t v; - const auto r {from_chars(first, str + len, v)}; + const auto r {detail::from_chars_general_impl(first, str + len, v, chars_format::general)}; if (r) { *this = v; From 2b8b32a466fceb29b9180d465811060f5aa20179 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:00:42 +0100 Subject: [PATCH 650/967] Add missing header --- include/boost/decimal/detail/from_chars_impl.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/detail/from_chars_impl.hpp b/include/boost/decimal/detail/from_chars_impl.hpp index 47ed27a26..cc768a49f 100644 --- a/include/boost/decimal/detail/from_chars_impl.hpp +++ b/include/boost/decimal/detail/from_chars_impl.hpp @@ -11,6 +11,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include From b6544c6206922d024ebbb622e3fed68ce5455751 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:05:04 +0100 Subject: [PATCH 651/967] Ignore clang12 warning --- include/boost/decimal/detail/locale_conversion.hpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/boost/decimal/detail/locale_conversion.hpp b/include/boost/decimal/detail/locale_conversion.hpp index 81f09da5e..88df2e2c6 100644 --- a/include/boost/decimal/detail/locale_conversion.hpp +++ b/include/boost/decimal/detail/locale_conversion.hpp @@ -19,6 +19,9 @@ namespace detail { #if defined(__GNUC__) && __GNUC__ >= 9 # pragma GCC diagnostic push # pragma GCC diagnostic ignored "-Wtype-limits" +#elif defined(__clang__) && __clang_major__ == 12 +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wtautological-constant-out-of-range-compare" #endif inline void convert_string_to_c_locale(char* buffer, const std::locale& loc) noexcept @@ -185,6 +188,8 @@ inline int convert_pointer_pair_to_local_locale(char* first, const char* last, c #if defined(__GNUC__) && __GNUC__ == 9 # pragma GCC diagnostic pop +#elif defined(__clang__) && __clang_major__ == 12 +# pragma clang diagnostic pop #endif inline int convert_pointer_pair_to_local_locale(char* first, const char* last) From 88ef1cb1b48683936f4283b7089ac3518acf6eb7 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:16:20 +0100 Subject: [PATCH 652/967] Remove now unused header --- include/boost/decimal/detail/from_string.hpp | 58 -------------------- 1 file changed, 58 deletions(-) delete mode 100644 include/boost/decimal/detail/from_string.hpp diff --git a/include/boost/decimal/detail/from_string.hpp b/include/boost/decimal/detail/from_string.hpp deleted file mode 100644 index 4eba4091b..000000000 --- a/include/boost/decimal/detail/from_string.hpp +++ /dev/null @@ -1,58 +0,0 @@ -// Copyright 2025 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt - -#ifndef BOOST_DECIMAL_DETAIL_FROM_STRING_HPP -#define BOOST_DECIMAL_DETAIL_FROM_STRING_HPP - -#include - -#if !defined(BOOST_DECIMAL_DISABLE_CLIB) - -#include -#include -#include - -#ifndef BOOST_DECIMAL_BUILD_MODULE -#include -#endif // BOOST_DECIMAL_BUILD_MODULE - -namespace boost { -namespace decimal { - -#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 15) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wundefined-inline" -#endif - -// Forward decl needed for string constructor -BOOST_DECIMAL_EXPORT template -constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, chars_format fmt = chars_format::general) noexcept -> from_chars_result; - -#if defined(__clang__) && (__clang_major__ >= 6 && __clang_major__ < 15) -# pragma clang diagnostic pop -#endif - -namespace detail { - -template -constexpr auto construct_from_string(const char* str, const std::size_t len) -> T -{ - T v {}; - const auto r {from_chars(str, str + len, v)}; - if (!r) - { - v = std::numeric_limits::quiet_NaN(); - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - } - - return v; -} - -} // namespace detail -} // namespace decimal -} // namespace boost - -#endif // BOOST_DECIMAL_DISABLE_CLIB - -#endif // BOOST_DECIMAL_DETAIL_FROM_STRING_HPP From d46686c2b892abdd522417d8ca27ec2f629f8ad2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:16:33 +0100 Subject: [PATCH 653/967] Re-architect const char* constructors of remaining types --- include/boost/decimal/decimal128_t.hpp | 90 +++++++++++---------- include/boost/decimal/decimal_fast128_t.hpp | 90 +++++++++++---------- include/boost/decimal/decimal_fast32_t.hpp | 89 ++++++++++---------- include/boost/decimal/decimal_fast64_t.hpp | 90 +++++++++++---------- 4 files changed, 187 insertions(+), 172 deletions(-) diff --git a/include/boost/decimal/decimal128_t.hpp b/include/boost/decimal/decimal128_t.hpp index cc53a0ae9..eafbf70b7 100644 --- a/include/boost/decimal/decimal128_t.hpp +++ b/include/boost/decimal/decimal128_t.hpp @@ -39,8 +39,8 @@ #include #include #include -#include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -971,47 +971,6 @@ constexpr decimal128_t::decimal128_t(const Decimal val) noexcept *this = to_decimal(val); } -#if !defined(BOOST_DECIMAL_DISABLE_CLIB) - -constexpr decimal128_t::decimal128_t(const char* str, std::size_t len) -{ - if (str == nullptr || len == 0) - { - bits_ = detail::d128_nan_mask; - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - return; // LCOV_EXCL_LINE - } - - // Normally plus signs aren't allowed - auto first {str}; - if (*first == '+') - { - ++first; - } - - decimal128_t v; - const auto r {from_chars(first, str + len, v)}; - if (r) - { - *this = v; - } - else - { - bits_ = detail::d128_nan_mask; - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - } -} - -constexpr decimal128_t::decimal128_t(const char* str) : decimal128_t(str, detail::strlen(str)) {} - -#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW -inline decimal128_t::decimal128_t(const std::string& str) : decimal128_t(str.c_str(), str.size()) {} -#else -constexpr decimal128_t::decimal128_t(std::string_view str) : decimal128_t(str.data(), str.size()) {} -#endif - -#endif // BOOST_DECIMAL_DISABLE_CLIB - constexpr decimal128_t::operator bool() const noexcept { constexpr decimal128_t zero {0, 0}; @@ -2320,6 +2279,51 @@ class numeric_limits : } //namespace std -#include +namespace boost { +namespace decimal { + +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + +constexpr decimal128_t::decimal128_t(const char* str, std::size_t len) +{ + if (str == nullptr || len == 0) + { + bits_ = detail::d128_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal128_t v; + const auto r {detail::from_chars_general_impl(first, str + len, v, chars_format::general)}; + if (r) + { + *this = v; + } + else + { + bits_ = detail::d128_nan_mask; + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal128_t::decimal128_t(const char* str) : decimal128_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal128_t::decimal128_t(const std::string& str) : decimal128_t(str.c_str(), str.size()) {} +#else +constexpr decimal128_t::decimal128_t(std::string_view str) : decimal128_t(str.data(), str.size()) {} +#endif + +#endif // BOOST_DECIMAL_DISABLE_CLIB + +} // namespace decimal +} // namespace boost #endif //BOOST_DECIMAL_decimal128_t_HPP diff --git a/include/boost/decimal/decimal_fast128_t.hpp b/include/boost/decimal/decimal_fast128_t.hpp index 1e36758b1..cf822aef4 100644 --- a/include/boost/decimal/decimal_fast128_t.hpp +++ b/include/boost/decimal/decimal_fast128_t.hpp @@ -39,8 +39,8 @@ #include #include #include -#include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -590,47 +590,6 @@ constexpr auto direct_init_d128(const decimal_fast128_t::significand_type signif return val; } -#if !defined(BOOST_DECIMAL_DISABLE_CLIB) - -constexpr decimal_fast128_t::decimal_fast128_t(const char* str, const std::size_t len) -{ - if (str == nullptr || len == 0) - { - *this = direct_init_d128(detail::d128_fast_qnan, 0, false); - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - return; // LCOV_EXCL_LINE - } - - // Normally plus signs aren't allowed - auto first {str}; - if (*first == '+') - { - ++first; - } - - decimal_fast128_t v; - const auto r {from_chars(first, str + len, v)}; - if (r) - { - *this = v; - } - else - { - *this = direct_init_d128(detail::d128_fast_qnan, 0, false); - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - } -} - -constexpr decimal_fast128_t::decimal_fast128_t(const char* str) : decimal_fast128_t(str, detail::strlen(str)) {} - -#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW -inline decimal_fast128_t::decimal_fast128_t(const std::string& str) : decimal_fast128_t(str.c_str(), str.size()) {} -#else -constexpr decimal_fast128_t::decimal_fast128_t(std::string_view str) : decimal_fast128_t(str.data(), str.size()) {} -#endif - -#endif // BOOST_DECIMAL_DISABLE_CLIB - constexpr auto signbit(const decimal_fast128_t& val) noexcept -> bool { return val.sign_; @@ -1682,6 +1641,51 @@ class numeric_limits : } // namespace std -#include +namespace boost { +namespace decimal { + +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + +constexpr decimal_fast128_t::decimal_fast128_t(const char* str, const std::size_t len) +{ + if (str == nullptr || len == 0) + { + *this = direct_init_d128(detail::d128_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal_fast128_t v; + const auto r {detail::from_chars_general_impl(first, str + len, v, chars_format::general)}; + if (r) + { + *this = v; + } + else + { + *this = direct_init_d128(detail::d128_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal_fast128_t::decimal_fast128_t(const char* str) : decimal_fast128_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal_fast128_t::decimal_fast128_t(const std::string& str) : decimal_fast128_t(str.c_str(), str.size()) {} +#else +constexpr decimal_fast128_t::decimal_fast128_t(std::string_view str) : decimal_fast128_t(str.data(), str.size()) {} +#endif + +#endif // BOOST_DECIMAL_DISABLE_CLIB + +} // namespace decimal +} // namespace boost #endif //BOOST_DECIMAL_decimal_fast128_t_HPP diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index 75e3656c6..b5af1e482 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -40,7 +40,6 @@ #include #include #include -#include #include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -576,47 +575,6 @@ constexpr auto direct_init(const detail::decimal_fast32_t_components& x) noexcep return val; } -#if !defined(BOOST_DECIMAL_DISABLE_CLIB) - -constexpr decimal_fast32_t::decimal_fast32_t(const char* str, const std::size_t len) -{ - if (str == nullptr || len == 0) - { - *this = direct_init(detail::d32_fast_qnan, UINT8_C((0))); - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - return; // LCOV_EXCL_LINE - } - - // Normally plus signs aren't allowed - auto first {str}; - if (*first == '+') - { - ++first; - } - - decimal_fast32_t v; - const auto r {from_chars(first, str + len, v)}; - if (r) - { - *this = v; - } - else - { - *this = direct_init(detail::d32_fast_qnan, UINT8_C((0))); - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - } -} - -constexpr decimal_fast32_t::decimal_fast32_t(const char* str) : decimal_fast32_t(str, detail::strlen(str)) {} - -#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW -inline decimal_fast32_t::decimal_fast32_t(const std::string& str) : decimal_fast32_t(str.c_str(), str.size()) {} -#else -constexpr decimal_fast32_t::decimal_fast32_t(std::string_view str) : decimal_fast32_t(str.data(), str.size()) {} -#endif - -#endif // BOOST_DECIMAL_DISABLE_CLIB - constexpr auto signbit(const decimal_fast32_t val) noexcept -> bool { return val.sign_; @@ -1646,6 +1604,51 @@ class numeric_limits : } // Namespace std -#include +namespace boost { +namespace decimal { + +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + +constexpr decimal_fast32_t::decimal_fast32_t(const char* str, const std::size_t len) +{ + if (str == nullptr || len == 0) + { + *this = direct_init(detail::d32_fast_qnan, UINT8_C((0))); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal_fast32_t v; + const auto r {detail::from_chars_general_impl(first, str + len, v, chars_format::general)}; + if (r) + { + *this = v; + } + else + { + *this = direct_init(detail::d32_fast_qnan, UINT8_C((0))); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal_fast32_t::decimal_fast32_t(const char* str) : decimal_fast32_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal_fast32_t::decimal_fast32_t(const std::string& str) : decimal_fast32_t(str.c_str(), str.size()) {} +#else +constexpr decimal_fast32_t::decimal_fast32_t(std::string_view str) : decimal_fast32_t(str.data(), str.size()) {} +#endif + +#endif // BOOST_DECIMAL_DISABLE_CLIB + +} // namespace decimal +} // namespace boost #endif //BOOST_DECIMAL_decimal_fast32_t_HPP diff --git a/include/boost/decimal/decimal_fast64_t.hpp b/include/boost/decimal/decimal_fast64_t.hpp index 15953f9f5..3d8004897 100644 --- a/include/boost/decimal/decimal_fast64_t.hpp +++ b/include/boost/decimal/decimal_fast64_t.hpp @@ -40,8 +40,8 @@ #include #include #include -#include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE @@ -584,47 +584,6 @@ constexpr auto direct_init_d64(const decimal_fast64_t::significand_type signific return val; } -#if !defined(BOOST_DECIMAL_DISABLE_CLIB) - -constexpr decimal_fast64_t::decimal_fast64_t(const char* str, const std::size_t len) -{ - if (str == nullptr || len == 0) - { - *this = direct_init_d64(detail::d64_fast_qnan, 0, false); - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - return; // LCOV_EXCL_LINE - } - - // Normally plus signs aren't allowed - auto first {str}; - if (*first == '+') - { - ++first; - } - - decimal_fast64_t v; - const auto r {from_chars(first, str + len, v)}; - if (r) - { - *this = v; - } - else - { - *this = direct_init_d64(detail::d64_fast_qnan, 0, false); - BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); - } -} - -constexpr decimal_fast64_t::decimal_fast64_t(const char* str) : decimal_fast64_t(str, detail::strlen(str)) {} - -#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW -inline decimal_fast64_t::decimal_fast64_t(const std::string& str) : decimal_fast64_t(str.c_str(), str.size()) {} -#else -constexpr decimal_fast64_t::decimal_fast64_t(std::string_view str) : decimal_fast64_t(str.data(), str.size()) {} -#endif - -#endif // BOOST_DECIMAL_DISABLE_CLIB - constexpr auto signbit(const decimal_fast64_t val) noexcept -> bool { return val.sign_; @@ -1621,6 +1580,51 @@ class numeric_limits : } // namespace std -#include +namespace boost { +namespace decimal { + +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + +constexpr decimal_fast64_t::decimal_fast64_t(const char* str, const std::size_t len) +{ + if (str == nullptr || len == 0) + { + *this = direct_init_d64(detail::d64_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + return; // LCOV_EXCL_LINE + } + + // Normally plus signs aren't allowed + auto first {str}; + if (*first == '+') + { + ++first; + } + + decimal_fast64_t v; + const auto r {detail::from_chars_general_impl(first, str + len, v, chars_format::general)}; + if (r) + { + *this = v; + } + else + { + *this = direct_init_d64(detail::d64_fast_qnan, 0, false); + BOOST_DECIMAL_THROW_EXCEPTION(std::runtime_error("Can not construct from invalid string")); + } +} + +constexpr decimal_fast64_t::decimal_fast64_t(const char* str) : decimal_fast64_t(str, detail::strlen(str)) {} + +#ifndef BOOST_DECIMAL_HAS_STD_STRING_VIEW +inline decimal_fast64_t::decimal_fast64_t(const std::string& str) : decimal_fast64_t(str.c_str(), str.size()) {} +#else +constexpr decimal_fast64_t::decimal_fast64_t(std::string_view str) : decimal_fast64_t(str.data(), str.size()) {} +#endif + +#endif // BOOST_DECIMAL_DISABLE_CLIB + +} // namespace decimal +} // namespace boost #endif //BOOST_DECIMAL_decimal_fast64_t_HPP From 57bc21aaaf785d9d7dd881470a0cffffa6bcc6c6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:17:23 +0100 Subject: [PATCH 654/967] Remove impl in unsupported environments --- include/boost/decimal/detail/from_chars_impl.hpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/boost/decimal/detail/from_chars_impl.hpp b/include/boost/decimal/detail/from_chars_impl.hpp index cc768a49f..cf00739d3 100644 --- a/include/boost/decimal/detail/from_chars_impl.hpp +++ b/include/boost/decimal/detail/from_chars_impl.hpp @@ -22,6 +22,8 @@ namespace boost { namespace decimal { namespace detail { +#if !defined(BOOST_DECIMAL_DISABLE_CLIB) + #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable:4127) @@ -118,6 +120,8 @@ constexpr auto from_chars_general_impl(const char* first, const char* last, Targ # pragma warning(pop) #endif +#endif // !defined(BOOST_DECIMAL_DISABLE_CLIB) + } // namespace detail } // namespace decimal } // namespace boost From 471935321c7c293715971f3216e4a113710c9a0d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:19:18 +0100 Subject: [PATCH 655/967] Default and re-add export modifier to now main template --- include/boost/decimal/charconv.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/boost/decimal/charconv.hpp b/include/boost/decimal/charconv.hpp index ca10222de..a60a783d1 100644 --- a/include/boost/decimal/charconv.hpp +++ b/include/boost/decimal/charconv.hpp @@ -47,8 +47,8 @@ namespace decimal { // from_chars // --------------------------------------------------------------------------------------------------------------------- -template -constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt) noexcept -> from_chars_result +BOOST_DECIMAL_EXPORT template +constexpr auto from_chars(const char* first, const char* last, TargetDecimalType& value, const chars_format fmt = chars_format::general) noexcept -> from_chars_result { return detail::from_chars_general_impl(first, last, value, fmt); } From dc5b7051518cfbf319a52cf1b87094d1638e7767 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 11:23:03 +0100 Subject: [PATCH 656/967] Fix missing header for new support --- include/boost/decimal/decimal_fast32_t.hpp | 1 + 1 file changed, 1 insertion(+) diff --git a/include/boost/decimal/decimal_fast32_t.hpp b/include/boost/decimal/decimal_fast32_t.hpp index b5af1e482..d65951517 100644 --- a/include/boost/decimal/decimal_fast32_t.hpp +++ b/include/boost/decimal/decimal_fast32_t.hpp @@ -41,6 +41,7 @@ #include #include #include +#include #ifndef BOOST_DECIMAL_BUILD_MODULE #include From a7ed1d72b0be77a5862317dc6e16011669e88a4b Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 14:25:09 +0100 Subject: [PATCH 657/967] Add dependabot for antora dependency tracking --- .github/workflows/dependabot.yml | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 .github/workflows/dependabot.yml diff --git a/.github/workflows/dependabot.yml b/.github/workflows/dependabot.yml new file mode 100644 index 000000000..f43515a43 --- /dev/null +++ b/.github/workflows/dependabot.yml @@ -0,0 +1,10 @@ +# Copyright 2025 Matt Borland +# Distributed under the Boost Software License, Version 1.0. +# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt) + +version: 2 +updates: + - package-ecosystem: "npm" + directory: "/doc" + schedule: + interval: "weekly" From e534e6612ad6c30c90a734680bc4b832fa9804ee Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 14:42:49 +0100 Subject: [PATCH 658/967] Change directory --- .github/{workflows => }/dependabot.yml | 0 1 file changed, 0 insertions(+), 0 deletions(-) rename .github/{workflows => }/dependabot.yml (100%) diff --git a/.github/workflows/dependabot.yml b/.github/dependabot.yml similarity index 100% rename from .github/workflows/dependabot.yml rename to .github/dependabot.yml From 3d8f860b25369acfa504bc61d8b90280ddb69862 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 12:39:09 +0100 Subject: [PATCH 659/967] Use symlinks --- doc/modules/ROOT/pages/examples.adoc | 314 +-------------------------- 1 file changed, 7 insertions(+), 307 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index fd95067dd..fcc6db616 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -17,113 +17,7 @@ This example can be found in the `examples/` folder as https://github.com/cppall [source, c++] ---- -// Copyright 2024 Matt Borland -// Distributed under the Boost Software License, Version 1.0. -// https://www.boost.org/LICENSE_1_0.txt -// -// This file demonstrates some of the very basic ways you con construct decimal types -// This includes: from integer; integer and exponent; integer exponent and sign; string - -#include // For decimal32_t type -#include // For support of decimal types -#include // For isnan and isinf -#include -#include - -int main() -{ - using boost::decimal::decimal32_t; // The decimal32_t type - using boost::decimal::construction_sign; // An enum class for specifying sign during certain instances of construction - using boost::decimal::isinf; // Analogous to std::isinf but for decimal types - using boost::decimal::isnan; // Analogous to std::isnan but for decimal types - - // Construction from an integer - constexpr decimal32_t val_1 {100}; - - // Construction from a signed integer and exponent - constexpr decimal32_t val_2 {10, 1}; - - // Construction from an unsigned integer, exponent, and sign - // The sign enum is named construction_sign, and has two members: positive and negative - constexpr decimal32_t val_3 {1U, 2, construction_sign::negative}; - - std::cout << "Val_1: " << val_1 << '\n' - << "Val_2: " << val_2 << '\n' - << "Val_3: " << val_3 << '\n'; - - if (val_1 == val_2 && val_2 == val_3 && val_1 == val_3) - { - std::cout << "All equal values" << std::endl; - } - - // Demonstration of the overflow and underflow handling - // A value that overflows constructs an infinity (which can be queried using isinf) - // A value that underflows constructs a zero - constexpr decimal32_t overflow_value {100, 10000}; - if (isinf(overflow_value)) - { - std::cout << "Overflow constructs infinity" << std::endl; - } - - constexpr decimal32_t underflow_value {100, -10000}; - constexpr decimal32_t zero {0}; - if (underflow_value == zero) - { - std::cout << "Underflow constructs zero" << std::endl; - } - - // Construction of NANs can be done using numeric limits, - // and checked using the normal isnan function - constexpr decimal32_t non_finite_from_float {std::numeric_limits::quiet_NaN()}; - if (isnan(non_finite_from_float)) - { - std::cout << "NaN constructs NaN" << std::endl; - } - - // We can also construct both from a C-string (const char*) and from a std::string - - const char* c_string_value {"4.3e-02"}; - const decimal32_t from_c_string {c_string_value}; - const decimal32_t from_std_string {std::string(c_string_value)}; - - if (from_c_string == from_std_string) - { - std::cout << "Values constructed from const char* and std::string are the same" << '\n'; - } - - // If we attempt construction for a string that cannot be converted into a decimal value, - // the constructor will do 1 of 2 things: - // 1) In a noexcept environment the constructor will return a quiet NaN - // 2) Otherwise it will throw - // - // The exception environment is detected automatically, - // or can be set by defining BOOST_DECIMAL_DISABLE_EXCEPTIONS - - const char* bad_string {"Junk_String"}; - - #ifndef BOOST_DECIMAL_DISABLE_EXCEPTIONS - - try - { - const decimal32_t throwing_value {bad_string}; - std::cout << throwing_value << '\n'; - } - catch (const std::runtime_error& e) - { - std::cout << e.what() << std::endl; - } - - #else - - const decimal32_t nan_value {bad_string}; - if (isnan(nan_value)) - { - std::cout << "Bad string construction has formed a NAN" << std::endl; - } - - #endif -} - +include::example$basic_construction.cpp[] ---- The expected output from this example is: @@ -145,63 +39,9 @@ This example can be found in the `examples/` folder as https://github.com/cppall [source, c++] ---- -// This file briefly demonstrates the results of mixed decimal comparisons and arithmetic - -#include // For the type decimal32_t -#include // For the type decimal64_t -#include // For decimal type support to -#include -#include - -int main() -{ - using boost::decimal::decimal32_t; - using boost::decimal::decimal64_t; - using boost::decimal::decimal128_t; - - // First construct two values that we will perform arithmetic with - const decimal32_t a {"5.2"}; - const decimal64_t b {"3.9"}; - - std::cout << "decimal32_t value (a): " << a << '\n' - << "decimal64_t value (b): " << b << '\n'; - - // Mixed decimal comparisons are allowed by default - if (a > b) - { - std::cout << "a is greater than b" << '\n'; - } - - // Even comparison of unrepresentable values is fine - // For example decimal32_t can't represent decimal64_t max value - constexpr decimal64_t dec64_max {std::numeric_limits::max()}; - if (a < dec64_max) - { - std::cout << a << " is less than " << dec64_max << '\n'; - } - - // Danger awaits if you decide to do this yourself instead of letting the system do it for you, - // since in this example the two should compare equal but overflowing decimal32_t makes infinity - if (static_cast(dec64_max) < dec64_max) - { - std::cout << dec64_max << " is less than " << static_cast(dec64_max) << '\n'; - } - - // With mixed operations like +, -, *, / we promote to the higher precision type - // Example: decimal32_t + decimal64_t -> decimal64_t - - // We use auto here for two reasons - // 1) To demonstrate that it's safe - // 2) To show the promotion with the conditional logic that follows - const auto c {a + b}; - using c_type = std::remove_cv_t; // We used const auto so the result is const decimal64_t - - static_assert(std::is_same::value, "decimal32_t + decimal64_t is supposed to yield decimal64_t"); - std::cout << "The result of a + b is a decimal64_t: " << c << '\n'; - - return 0; -} +include::example$promotion.cpp[] ---- + Expected Output: ---- decimal32_t value (a): 5.2 @@ -219,102 +59,9 @@ This example can be found in the `examples/` folder as https://github.com/cppall [source, c++] ---- -// This file demonstrates the various ways that support can be used with the decimal library -// NOTE: need not be included to use this functionality - -#include // For the type decimal64_t -#include // For support -#include // For decimal support -#include // -#include // For std::strlen - -int main() -{ - using boost::decimal::decimal64_t; // The type decimal64_t - using boost::decimal::to_chars; // The to_chars functions - using boost::decimal::to_chars_result; // The return type of to_chars - using boost::decimal::from_chars; // The from_chars functions - using boost::decimal::from_chars_result;// The return type of from_chars - using boost::decimal::chars_format; // The enum class of the different formatting options - using boost::decimal::formatting_limits;// Allows the user to correctly size buffers - - const char* initial_value {"-7.12345e+06"}; - - decimal64_t initial_decimal; - const from_chars_result r_initial {from_chars(initial_value, initial_value + std::strlen(initial_value), initial_decimal)}; - - // from_chars_result contains a value of std::errc, but also has a bool operator for better checks like this - // Regular should be getting this bool operator in C++26 - if (!r_initial) - { - // Here you can handle an error condition in any way you see fit - // For the purposes of our example we log and abort - std::cout << "Unexpected failure" << std::endl; - return 1; - } - else - { - std::cout << "Initial decimal: " << initial_decimal << '\n'; - } - - // boost::decimal::from_chars deviates from the C++ standard by allowing a std::string, - // or a std::string_view (when available) - // - // It is also perfectly acceptable to use an auto return type for even more brevity when using from_chars - const std::string string_value {"3.1415"}; - decimal64_t string_decimal; - const auto r_string {from_chars(string_value, string_decimal)}; - if (r_string) - { - std::cout << "Value from string: " << string_decimal << '\n'; - } - - // We can now compare the various ways to print the value - // First we will review the formatting_limits struct - // This struct contains a number of members that allow the to_chars buffer to be correctly sized - // - // First formatting_limits takes a type and optionally a precision as template parameters - // It then has members each corresponding to the maximum number of characters needed to print the type - // - // 1) scientific_format_max_chars - // 2) fixed_format_max_chars - // 3) hex_format_max_chars - // 4) cohort_preserving_scientific_max_chars - // 5) general_format_max_chars - // 6) max_chars - Equal to the maximum value of 1 to 5 to allow to_chars of any format - // - // Each of these will give you one additional character so you can write a null terminator to the end - // NOTE: to_chars IS NOT default null terminated - - char scientific_buffer[formatting_limits::scientific_format_max_chars]; - const to_chars_result r_sci {to_chars(scientific_buffer, - scientific_buffer + sizeof(scientific_buffer), initial_decimal, chars_format::scientific)}; - if (r_sci) - { - *r_sci.ptr = '\0'; // to_chars does not null terminate per the C++ standard - std::cout << "Value in scientific format: " << scientific_buffer << '\n'; - } - // else handle the error how you would like - - // If we went to print the value to some specified precision our buffer will need more space - // Formatting limits takes a precision in this case - // - // Also as with from_chars it's perfectly fine to use an auto return type with to_chars - constexpr int required_precision {20}; - char precision_20_scientific_buffer[formatting_limits::scientific_format_max_chars]; - const auto r_sci20 {to_chars(precision_20_scientific_buffer, - precision_20_scientific_buffer + sizeof(precision_20_scientific_buffer), - initial_decimal, chars_format::scientific, required_precision)}; - - if (r_sci20) - { - *r_sci20.ptr = '\0'; - std::cout << "Value in scientific format with precision 20: " << precision_20_scientific_buffer << '\n'; - } - // else handle the error how you would like -} - +include::example$charconv.cpp[] ---- + Output: ---- Initial decimal: -7123450 @@ -330,57 +77,10 @@ This example can be found in the `examples/` folder as https://github.com/cppall [source, c++] ---- -#include // For type decimal32_t -#include // For type decimal64_t -#include // For type decimal128_t -#include // For support -#include // For sin function -#include -#include - -template -void sin_identity(T val) -{ - // ADL allows builtin and decimal types to both be used - // Boost.Decimal is not allowed to overload std::sin so it must be provided in its own namespace - // You must also include using std::sin to ensure that it is found for the float, double, and long double cases. - // It is preferred to have using statements for the functions you intend to use instead of using namespace XXX. - using std::sin; - using boost::decimal::sin; - - // sin(x) = -sin(-x) - // The call here MUST be unqualified, or you will get compiler errors - // For example calling std::sin here would not allow any of the decimal types to be used - std::cout << "sin(" << val << ") = " << sin(val) << '\n' - << "-sin(" << -val << ") = " << -sin(-val) << "\n\n"; -} - -int main() -{ - // Because of the two using statements in the above function we can now call it with built-in floating point, - // or our decimal types as show below - - std::cout << "Float:\n"; - sin_identity(-0.5F); - - std::cout << "Double:\n"; - sin_identity(-0.5); - - std::cout << "Long Double:\n"; - sin_identity(-0.5L); - - std::cout << "decimal32_t:\n"; - sin_identity(boost::decimal::decimal32_t{"-0.5"}); - - std::cout << "decimal64_t:\n"; - sin_identity(boost::decimal::decimal64_t{"-0.5"}); - - std::cout << "decimal128_t:\n"; - sin_identity(boost::decimal::decimal128_t{"-0.5"}); -} +include::example$adl.cpp[] ---- -The expected output of this is: +Expected Output: ---- Float: sin(-0.5) = -0.479426 From e2a9b67be39817fa3d0736e1414b509fb03049ab Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 12:51:50 +0100 Subject: [PATCH 660/967] Use symlink --- doc/build_antora.sh | 0 doc/modules/ROOT/examples | 1 + 2 files changed, 1 insertion(+) mode change 100644 => 100755 doc/build_antora.sh create mode 120000 doc/modules/ROOT/examples diff --git a/doc/build_antora.sh b/doc/build_antora.sh old mode 100644 new mode 100755 diff --git a/doc/modules/ROOT/examples b/doc/modules/ROOT/examples new file mode 120000 index 000000000..9f9d1de88 --- /dev/null +++ b/doc/modules/ROOT/examples @@ -0,0 +1 @@ +../../../examples \ No newline at end of file From d8a015ee5120f6e9d9e877cc708497d8bf593bdf Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 13:28:45 +0100 Subject: [PATCH 661/967] Overhaul literals and constants example Closes: #1208 --- doc/modules/ROOT/pages/examples.adoc | 37 +++++-------- examples/literals.cpp | 78 +++++++++++++++++++++------- 2 files changed, 72 insertions(+), 43 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index fcc6db616..36b5455f0 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -109,33 +109,22 @@ sin(-0.5) = -0.479426 [#examples_literals_constants] == Literals and Constants -[source, c++] ----- -#include -#include -template -bool float_equal(T lhs, T rhs) -{ - using std::fabs; - return fabs(lhs - rhs) < std::numeric_limits::epsilon(); // numeric_limits is specialized for all decimal types -} - - -int main() -{ - using namespace boost::decimal; - using namespace boost::decimal::literals; +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/literals.cpp[literals.cpp]. - const auto pi_32 {"3.141592653589793238"_DF}; - const auto pi_64 {"3.141592653589793238"_DD}; - - assert(float_equal(pi_32, static_cast(pi_64))); // Explicit conversion between decimal types - assert(float_equal(pi_32, boost::decimal::numbers::pi_v)); // Constants available in numbers namespace - assert(float_equal(pi_64, numbers::pi)); // Default constant type is decimal64_t +[source, c++] +---- +include::example$literals.cpp[] +---- - return 0; -} +Expected Output: +---- +32-bit Pi: 3.141593 +64-bit Pi: 3.141592653589793 +32-bit UDL Pi: 3.141593 +Rounded UDL has the same value as the 32-bit constant +64-bit UDL Pi: 3.141592653589793 +Rounded UDL has the same value as the 64-bit constant ---- [#examples_finance] diff --git a/examples/literals.cpp b/examples/literals.cpp index 603820a0b..b8990d064 100644 --- a/examples/literals.cpp +++ b/examples/literals.cpp @@ -1,32 +1,72 @@ // Copyright 2024 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// +// This examples demonstrates decimal floating point literals, +// as well as numeric constants made available by the library -#include -#include +#include // For type decimal32_t +#include // For type decimal64_t +#include // For the decimal (user defined) literals +#include // For provided numeric constants +#include // For support to and +#include +#include +#include +#include -using namespace boost::decimal::literals; - -template -bool float_equal(T lhs, T rhs) +int main() { - using std::fabs; - return fabs(lhs - rhs) < std::numeric_limits::epsilon(); // numeric_limits is overloaded for all decimal types -} + using namespace boost::decimal::literals; // Much like the std namespace, literals are separate form the lib + using boost::decimal::decimal32_t; // Type decimal32_t + using boost::decimal::decimal64_t; // Type decimal64_t + // Defaulted numeric constants are available with type decimal64_t, + // much like std::numbers::pi defaults to double + constexpr auto default_pi {boost::decimal::numbers::pi}; + using default_type = std::remove_cv_t; + static_assert(std::is_same::value, "Defaulted value has type decimal64_t"); -int main() -{ - using namespace boost::decimal; + // You can also specify the type explicitly as these are template constants + constexpr decimal32_t decimal32_pi {boost::decimal::numbers::pi_v}; - BOOST_DECIMAL_ATTRIBUTE_UNUSED const auto pi_32 {"3.141592653589793238"_DF}; - BOOST_DECIMAL_ATTRIBUTE_UNUSED const auto pi_64 {"3.141592653589793238"_DD}; + // We can use std::setprecision from to see the real difference between the two values + // numeric_limits is also specialized for each type + std::cout << std::setprecision(std::numeric_limits::digits10) + << "32-bit Pi: " << decimal32_pi << '\n'; - assert(float_equal(pi_32, static_cast(pi_64))); // Explicit conversion between decimal types - assert(float_equal(pi_32, boost::decimal::numbers::pi_v)); // Constants available in numbers namespace - assert(float_equal(pi_64, numbers::pi)); // Default constant type is decimal64_t + std::cout << std::setprecision(std::numeric_limits::digits10) + << "64-bit Pi: " << default_pi << '\n'; - return 0; -} + // All of our types also offer user defined literals: + // _df or _DF for decimal32_t + // _dd or _DD for decimal64_t + // _dl or _DL for decimal128_t + // For fast types add an f to the end of each (e.g. _dff = decimal_fast32_t or _DLF decimal_fast128_t) + // + // Since we have specified the type using the literal it is safe to use auto for the type + // + // We construct both from the first 40 digits of pi + // The constructor will parse this and then round to the proper precision automatically + + constexpr auto literal32_pi {"3.141592653589793238462643383279502884197"_DF}; + constexpr auto literal64_pi {"3.141592653589793238462643383279502884197"_DD}; + + std::cout << std::setprecision(std::numeric_limits::digits10) + << "32-bit UDL Pi: " << literal32_pi << '\n'; + // Unlike built-in binary floating point, floating equal is acceptable with decimal floating point + // Float equal will automatically address cohorts as per IEEE 754 if required (not shown in this example) + if (literal32_pi == decimal32_pi) + { + std::cout << "Rounded UDL has the same value as the 32-bit constant" << '\n'; + } + std::cout << std::setprecision(std::numeric_limits::digits10) + << "64-bit UDL Pi: " << literal64_pi << '\n'; + + if (literal64_pi == default_pi) + { + std::cout << "Rounded UDL has the same value as the 64-bit constant" << '\n'; + } +} From a57468d9981ec85941e68d61c990561c64a29285 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 13:30:55 +0100 Subject: [PATCH 662/967] Use formatting limits instead of arbitrary size --- examples/charconv_cohort_preservation.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/examples/charconv_cohort_preservation.cpp b/examples/charconv_cohort_preservation.cpp index 3ac56c8f9..1b268bb82 100644 --- a/examples/charconv_cohort_preservation.cpp +++ b/examples/charconv_cohort_preservation.cpp @@ -87,7 +87,7 @@ int main() } // The same chars_format option applies to to_chars which allows us to roundtrip the values - char buffer[64] {}; + char buffer[boost::decimal::formatting_limits::cohort_preserving_scientific_max_chars] {}; const auto r_to = to_chars(buffer, buffer + sizeof(buffer), string_val, chars_format::cohort_preserving_scientific); if (!r_to) From 04a51a51856e77ded2210092be5ebc7fed2c318d Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 13:34:35 +0100 Subject: [PATCH 663/967] Update cohort preservation charconv example Closes: #1210 --- doc/modules/ROOT/pages/cohorts.adoc | 176 +++++++++------------- examples/charconv_cohort_preservation.cpp | 8 +- 2 files changed, 72 insertions(+), 112 deletions(-) diff --git a/doc/modules/ROOT/pages/cohorts.adoc b/doc/modules/ROOT/pages/cohorts.adoc index d9b809660..43a6e322f 100644 --- a/doc/modules/ROOT/pages/cohorts.adoc +++ b/doc/modules/ROOT/pages/cohorts.adoc @@ -29,115 +29,75 @@ Below is an example of how cohorts can be preserved if one so wishes. == Cohort Preserving `` Example +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/charconv_cohort_preservation.cpp[charconv_cohort_preservation.cpp]. + [source, c++] ---- -// This file demonstrates the effects of cohorts and how to maintain them with - -#include // For the type decimal32_t -#include // For decimal support for -#include // For decimal support for -#include -#include -#include -#include - -static constexpr std::size_t N {7}; - -// All the following decimal values will compare equal, -// but since they have different numbers of 0s in the significand they will not be bitwise equal -constexpr std::array decimals = { - boost::decimal::decimal32_t{3, 2}, - boost::decimal::decimal32_t{30, 1}, - boost::decimal::decimal32_t{300, 0}, - boost::decimal::decimal32_t{3000, -1}, - boost::decimal::decimal32_t{30000, -2}, - boost::decimal::decimal32_t{300000, -3}, - boost::decimal::decimal32_t{3000000, -4}, -}; - -// These strings represent the same values as the constructed ones shown above -constexpr std::array strings = { - "3e+02", - "3.0e+02", - "3.00e+02", - "3.000e+02", - "3.0000e+02", - "3.00000e+02", - "3.000000e+02", -}; - -int main() -{ - using boost::decimal::decimal32_t; - using boost::decimal::from_chars; - using boost::decimal::chars_format; - - // In some instances we want to preserve the cohort of our values - // In the above strings array all of these values compare equal, - // but will NOT be bitwise equal once constructed. - - for (std::size_t i = 0; i < N; ++i) - { - decimal32_t string_val; - const auto r_from = from_chars(strings[i], string_val, chars_format::cohort_preserving_scientific); - - if (!r_from) - { - // Unexpected failure - return 1; - } - - for (std::size_t j = 0; j < N; ++j) - { - // Now that we have constructed a value from string - // we can compare it bitwise to all the members of the decimal array - // to show the difference between operator== and bitwise equality - // - // All members of a cohort are supposed to compare equal with operator==, - // and likewise will hash equal to - std::uint32_t string_val_bits; - std::uint32_t constructed_val_bits; - - std::memcpy(&string_val_bits, &string_val, sizeof(string_val_bits)); - std::memcpy(&constructed_val_bits, &decimals[j], sizeof(constructed_val_bits)); - - if (string_val == decimals[j]) - { - std::cout << "Values are equal and "; - if (string_val_bits == constructed_val_bits) - { - std::cout << "bitwise equal.\n"; - } - else - { - std::cout << "NOT bitwise equal.\n"; - } - } - } - - // The same chars_format option applies to to_chars which allows us to roundtrip the values - char buffer[64] {}; - const auto r_to = to_chars(buffer, buffer + sizeof(buffer), string_val, chars_format::cohort_preserving_scientific); - - if (!r_to) - { - // Unexpected failure - return 1; - } - - *r_to.ptr = '\0'; // charconv does not null terminate per the C++ specification - - if (std::strcmp(strings[i], buffer) == 0) - { - std::cout << "Successful Roundtrip\n\n"; - } - else - { - std::cout << "Failed\n\n"; - return 1; - } - } +include::example$charconv_cohort_preservation.cpp[] +---- - return 0; -} +Expected Output: +---- +Values are equal and bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Successful Roundtrip of value: 3e+02 + +Values are equal and NOT bitwise equal. +Values are equal and bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Successful Roundtrip of value: 3.0e+02 + +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Successful Roundtrip of value: 3.00e+02 + +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Successful Roundtrip of value: 3.000e+02 + +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Successful Roundtrip of value: 3.0000e+02 + +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and bitwise equal. +Values are equal and NOT bitwise equal. +Successful Roundtrip of value: 3.00000e+02 + +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and NOT bitwise equal. +Values are equal and bitwise equal. +Successful Roundtrip of value: 3.000000e+02 ---- diff --git a/examples/charconv_cohort_preservation.cpp b/examples/charconv_cohort_preservation.cpp index 1b268bb82..62097c382 100644 --- a/examples/charconv_cohort_preservation.cpp +++ b/examples/charconv_cohort_preservation.cpp @@ -39,9 +39,9 @@ constexpr std::array strings = { int main() { - using boost::decimal::decimal32_t; - using boost::decimal::from_chars; - using boost::decimal::chars_format; + using boost::decimal::decimal32_t; // For type decimal32_t + using boost::decimal::from_chars; // decimal specific from_chars + using boost::decimal::chars_format; // chars_format enum with decimal specific option shown here // In some instances we want to preserve the cohort of our values // In the above strings array all of these values compare equal, @@ -100,7 +100,7 @@ int main() if (std::strcmp(strings[i], buffer) == 0) { - std::cout << "Successful Roundtrip\n\n"; + std::cout << "Successful Roundtrip of value: " << buffer << "\n\n"; } else { From e24243f53b469e0d9d533bf6258ec08a99be2149 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 13:43:56 +0100 Subject: [PATCH 664/967] Update our fmt formatting example --- doc/modules/ROOT/pages/examples.adoc | 79 ++++++++++++++++++++++------ examples/fmt_format.cpp | 7 ++- 2 files changed, 68 insertions(+), 18 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 36b5455f0..a47d5783f 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -153,48 +153,95 @@ This example could be extended with the simple moving average to create full ban == Formatting Boost.Decimal allows you to format your output with both `` and `` depending on your compiler support. +pass:[{fmt}] support is available starting with pass:[C++14] so long as you have the library available, but `` requires pass:[C++20] and compiler support -[#examples_std_format] -=== `` +[#examples_fmt_format] +=== `` -If your compiler provides `` you can use that to format the output of your values: +We also provide support for pass:[{fmt}] so you can easily just swap the namespaces and headers on the above example: [source, c++] ---- -#include +// Copyright 2025 Matt Borland +// Distributed under the Boost Software License, Version 1.0. +// https://www.boost.org/LICENSE_1_0.txt +// +// This example demonstrates usage and formatting of decimal types with fmt + +#include // For type decimal32_t +#include // For type decimal64_t +#include // For {fmt} support #include -#include int main() { - constexpr boost::decimal::decimal64_t val1 {314, -2}; - constexpr boost::decimal::decimal32_t val2 {3141, -3}; - - std::cout << std::format("{:10.3e}", val1) << '\n'; - std::cout << std::format("{:10.3e}", val2) << std::endl; + constexpr boost::decimal::decimal64_t val1 {"3.14"}; + constexpr boost::decimal::decimal32_t val2 {"3.141"}; + + // The easiest is no specification which is general format + // Given these values they will print in fixed format + std::cout << "Default Format:\n"; + std::cout << fmt::format("{}", val1) << '\n'; + std::cout << fmt::format("{}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + std::cout << "Scientific Format:\n"; + std::cout << fmt::format("{:e}", val1) << '\n'; + std::cout << fmt::format("{:e}", val2) << "\n\n"; + + // Next we can add a type modifier to get scientific formatting + // Here this gives one digit of precision rounded according to current rounding mode + std::cout << "Scientific Format with Specified Precision:\n"; + std::cout << fmt::format("{:.1e}", val1) << '\n'; + std::cout << fmt::format("{:.1e}", val2) << "\n\n"; + + // This combines the padding modifier (10), precision (3 digits), and a type modifier (e) + std::cout << "Scientific Format with Specified Precision and Padding:\n"; + std::cout << fmt::format("{:10.3e}", val1) << '\n'; + std::cout << fmt::format("{:10.3e}", val2) << '\n'; return 0; } ---- -[#examples_fmt_format] -=== `` +Expected Output: +---- +Default Format: +3.14 +3.141 -We also provide support for pass:[{fmt}] so you can easily just swap the namespaces and headers on the above example: +Scientific Format: +3.14e+00 +3.141e+00 + +Scientific Format with Specified Precision: +3.1e+00 +3.1e+00 + +Scientific Format with Specified Precision and Padding: +03.140e+00 +03.141e+00 +---- + +[#examples_std_format] +=== `` + +Taking the above example of pass:[{fmt}] and replacing all instances of `namespace fmt` with `namespace std` gives us another working example. +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/format.cpp[format.cpp] [source, c++] ---- #include #include -#include +#include int main() { constexpr boost::decimal::decimal64_t val1 {314, -2}; constexpr boost::decimal::decimal32_t val2 {3141, -3}; - std::cout << fmt::format("{:10.3e}", val1) << '\n'; - std::cout << fmt::format("{:10.3e}", val2) << std::endl; + std::cout << std::format("{:10.3e}", val1) << '\n'; + std::cout << std::format("{:10.3e}", val2) << std::endl; return 0; } diff --git a/examples/fmt_format.cpp b/examples/fmt_format.cpp index 3fa18214d..8ca34bc40 100644 --- a/examples/fmt_format.cpp +++ b/examples/fmt_format.cpp @@ -1,9 +1,12 @@ // Copyright 2025 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// +// This example demonstrates usage and formatting of decimal types with fmt -#include -#include +#include // For type decimal32_t +#include // For type decimal64_t +#include // For {fmt} support #include #if defined(BOOST_DECIMAL_HAS_FMTLIB_SUPPORT) && defined(BOOST_DECIMAL_TEST_FMT) From af65d64a2190eba020aa847b8d492096577c5e47 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 13:44:50 +0100 Subject: [PATCH 665/967] Re-arrange navbar to match new layout of examples page --- doc/modules/ROOT/nav.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/modules/ROOT/nav.adoc b/doc/modules/ROOT/nav.adoc index 7ef07b996..a1810ba1c 100644 --- a/doc/modules/ROOT/nav.adoc +++ b/doc/modules/ROOT/nav.adoc @@ -9,8 +9,8 @@ ** xref:examples.adoc#examples_finance[Financial Applications] ** xref:examples.adoc#examples_boost_math[Boost.Math Integration] ** xref:examples.adoc#examples_format[Formatting] +*** xref:examples.adoc#examples_fmt_format[pass:[{fmt}]] *** xref:examples.adoc#examples_std_format[``] -*** xref:examples.adoc#examples_fmt_format[+{fmt}+] ** xref:examples.adoc#examples_print[``] * xref:api_reference.adoc[] ** xref:api_reference.adoc#api_ref_types[Types] From a4e43c8789725605ed6f5a9ff675fb46e002ead6 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 13:55:50 +0100 Subject: [PATCH 666/967] Update example and docs --- doc/modules/ROOT/pages/examples.adoc | 29 +++++++++++++++++----------- examples/format.cpp | 7 ++++++- 2 files changed, 24 insertions(+), 12 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index a47d5783f..88386e3f5 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -231,22 +231,29 @@ This example can be found in the `examples/` folder as https://github.com/cppall [source, c++] ---- -#include -#include -#include +include::example$format.cpp[] +---- -int main() -{ - constexpr boost::decimal::decimal64_t val1 {314, -2}; - constexpr boost::decimal::decimal32_t val2 {3141, -3}; +Expected Output: +---- +Default Format: +3.14 +3.141 - std::cout << std::format("{:10.3e}", val1) << '\n'; - std::cout << std::format("{:10.3e}", val2) << std::endl; +Scientific Format: +3.14e+00 +3.141e+00 - return 0; -} +Scientific Format with Specified Precision: +3.1e+00 +3.1e+00 + +Scientific Format with Specified Precision and Padding: +03.140e+00 +03.141e+00 ---- + [#examples_print] == `` diff --git a/examples/format.cpp b/examples/format.cpp index 41dd880f8..e54b4a181 100644 --- a/examples/format.cpp +++ b/examples/format.cpp @@ -1,10 +1,15 @@ // Copyright 2025 Matt Borland // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt +// +// This example demonstrates usage and formatting of decimal types with -#include +#include // For type decimal32_t +#include // For type decimal64_t +#include // For support (when available) #include +// This macro is defined in boost/decimal/format.hpp if the platform has support #ifdef BOOST_DECIMAL_HAS_FORMAT_SUPPORT #include From b2fd3be0b4d420dcb192a4dae03e7f0dd4f67218 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 14:01:56 +0100 Subject: [PATCH 667/967] Minor update to example --- doc/modules/ROOT/pages/examples.adoc | 14 ++++++++++++-- examples/print.cpp | 2 -- 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index 88386e3f5..d3f02aa62 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -158,7 +158,7 @@ pass:[{fmt}] support is available starting with pass:[C++14] so long as you have [#examples_fmt_format] === `` -We also provide support for pass:[{fmt}] so you can easily just swap the namespaces and headers on the above example: +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/fmt_format.cpp[fmt_format.cpp]. [source, c++] ---- @@ -223,6 +223,9 @@ Scientific Format with Specified Precision and Padding: 03.141e+00 ---- +IMPORTANT: If you are using the convenience header `` the header `` is *NOT* automatically included since it requires an external library. +You must include it yourself. + [#examples_std_format] === `` @@ -257,7 +260,8 @@ Scientific Format with Specified Precision and Padding: [#examples_print] == `` -We can make one final change to our `` example where instead of using `std::cout`, we use pass:[C++23's] ``: +We can make one final change to our `` example where instead of using `std::cout`, we use pass:[C++23's] ``. +This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/print.cpp[print.cpp]. [source, c++] ---- @@ -275,3 +279,9 @@ int main() return 0; } ---- + +Expected Output: +---- +03.140e+00 +03.141e+00 +---- diff --git a/examples/print.cpp b/examples/print.cpp index e46e6dff0..65dd66e42 100644 --- a/examples/print.cpp +++ b/examples/print.cpp @@ -16,8 +16,6 @@ #if defined(BOOST_DECIMAL_HAS_FORMAT_SUPPORT) && defined(BOOST_DECIMAL_HAS_PRINT_SUPPORT) -#include - int main() { constexpr boost::decimal::decimal64_t val1 {314, -2}; From c505128e9cc8c5c8b6df4f3bdd1c7d8d5f72a196 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 15:06:15 +0100 Subject: [PATCH 668/967] Remove msys until symlinks are supported --- .github/workflows/ci.yml | 93 ++++++++++++++++++++-------------------- 1 file changed, 47 insertions(+), 46 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index db3b4e0c2..ac0d94a6f 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -987,52 +987,53 @@ jobs: g++ main.cpp $(pkg-config --cflags --libs boost_decimal) -o test_pkgconfig ./test_pkgconfig - MSYS2: - defaults: - run: - shell: msys2 {0} - strategy: - fail-fast: false - matrix: - include: - - { sys: MINGW32, compiler: gcc, cxxstd: '03,11,17,20' } - - { sys: MINGW64, compiler: gcc, cxxstd: '03,11,17,20' } - - runs-on: windows-latest - - steps: - - uses: actions/checkout@v4 - - - name: Setup MSYS2 environment - uses: msys2/setup-msys2@v2 - with: - msystem: ${{matrix.sys}} - update: true - install: git python - pacboy: gcc:p cmake:p ninja:p - - - name: Fetch Boost.CI - uses: actions/checkout@v4 - with: - repository: boostorg/boost-ci - ref: master - path: boost-ci-cloned - - name: Get CI scripts folder - run: | - # Copy ci folder if not testing Boost.CI - [[ "$GITHUB_REPOSITORY" =~ "boost-ci" ]] || cp -r boost-ci-cloned/ci . - rm -rf boost-ci-cloned - - - name: Setup Boost - env: - B2_COMPILER: ${{matrix.compiler}} - B2_CXXSTD: ${{matrix.cxxstd}} - B2_SANITIZE: ${{matrix.sanitize}} - B2_STDLIB: ${{matrix.stdlib}} - run: ci/github/install.sh - - - name: Run tests - run: ci/build.sh +# Symlink in docs folder breaks these runs +# MSYS2: +# defaults: +# run: +# shell: msys2 {0} +# strategy: +# fail-fast: false +# matrix: +# include: +# - { sys: MINGW32, compiler: gcc, cxxstd: '03,11,17,20' } +# - { sys: MINGW64, compiler: gcc, cxxstd: '03,11,17,20' } +# +# runs-on: windows-latest +# +# steps: +# - uses: actions/checkout@v4 +# +# - name: Setup MSYS2 environment +# uses: msys2/setup-msys2@v2 +# with: +# msystem: ${{matrix.sys}} +# update: true +# install: git python +# pacboy: gcc:p cmake:p ninja:p +# +# - name: Fetch Boost.CI +# uses: actions/checkout@v4 +# with: +# repository: boostorg/boost-ci +# ref: master +# path: boost-ci-cloned +# - name: Get CI scripts folder +# run: | +# # Copy ci folder if not testing Boost.CI +# [[ "$GITHUB_REPOSITORY" =~ "boost-ci" ]] || cp -r boost-ci-cloned/ci . +# rm -rf boost-ci-cloned +# +# - name: Setup Boost +# env: +# B2_COMPILER: ${{matrix.compiler}} +# B2_CXXSTD: ${{matrix.cxxstd}} +# B2_SANITIZE: ${{matrix.sanitize}} +# B2_STDLIB: ${{matrix.stdlib}} +# run: ci/github/install.sh +# +# - name: Run tests +# run: ci/build.sh intel: runs-on: ubuntu-latest From db0cb40505866a5ed8ed93654eda4bf0bb63e42a Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Wed, 12 Nov 2025 14:07:23 +0000 Subject: [PATCH 669/967] Bump antora from 3.1.10 to 3.1.14 in /doc Bumps [antora](https://gitlab.com/antora/antora) from 3.1.10 to 3.1.14. - [Changelog](https://gitlab.com/antora/antora/blob/main/CHANGELOG.adoc) - [Commits](https://gitlab.com/antora/antora/compare/v3.1.10...v3.1.14) --- updated-dependencies: - dependency-name: antora dependency-version: 3.1.14 dependency-type: direct:development update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] --- doc/package-lock.json | 270 ++++++++++++++++++++++++++++++++++++++++-- doc/package.json | 2 +- 2 files changed, 263 insertions(+), 9 deletions(-) diff --git a/doc/package-lock.json b/doc/package-lock.json index b40fc22fd..5006ffff8 100644 --- a/doc/package-lock.json +++ b/doc/package-lock.json @@ -4,11 +4,10 @@ "requires": true, "packages": { "": { - "name": "doc", "devDependencies": { "@antora/cli": "3.1.10", "@antora/site-generator": "3.1.10", - "antora": "3.1.10" + "antora": "3.1.14" } }, "node_modules/@antora/asciidoc-loader": { @@ -341,13 +340,14 @@ } }, "node_modules/antora": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/antora/-/antora-3.1.10.tgz", - "integrity": "sha512-FcXPfqxi5xrGF2fTrFiiau45q8w0bzRcnfk97nxvpvztPDHX/lUOrBF/GpaGl1JT5K085VkI3/dbxTlvWK1jjw==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/antora/-/antora-3.1.14.tgz", + "integrity": 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"@antora/file-publisher": "3.1.14" + }, + "engines": { + "node": ">=16.0.0" + } + }, + "node_modules/antora/node_modules/@antora/ui-loader": { + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/ui-loader/-/ui-loader-3.1.14.tgz", + "integrity": "sha512-LVvTdKQOB44CmJ1JQDu8sJf6rrLZMxPAWWackdg2JtGyGHHpd80/MBcv4BSFk7//cJQ13Oqm/7JCbhD51KAFjg==", + "dev": true, + "license": "MPL-2.0", + "dependencies": { + "@antora/expand-path-helper": "~3.0", + "braces": "~3.0", + "cache-directory": "~2.0", + "fast-glob": "~3.3", + "hpagent": "~1.2", + "js-yaml": "~4.1", + "picomatch": "~4.0", + "should-proxy": "~1.0", + "simple-get": "~4.0", + "vinyl": "~3.0", + "yauzl": "~3.1" + }, + "engines": { + "node": ">=16.0.0" + } + }, "node_modules/argparse": { "version": "2.0.1", "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz", @@ -1505,7 +1760,6 @@ "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz", "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==", "dev": true, - "peer": true, "engines": { "node": ">=0.4.0" } diff --git a/doc/package.json b/doc/package.json index f749805b6..753f84497 100644 --- a/doc/package.json +++ b/doc/package.json @@ -2,6 +2,6 @@ "devDependencies": { "@antora/cli": "3.1.10", "@antora/site-generator": "3.1.10", - "antora": "3.1.10" + "antora": "3.1.14" } } From eaff5993a0d9fa579dbfe2b1de6649f10916b05a Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 15:21:59 +0100 Subject: [PATCH 670/967] Use grouped updates for dependabot --- .github/dependabot.yml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/.github/dependabot.yml b/.github/dependabot.yml index f43515a43..23dab29e0 100644 --- a/.github/dependabot.yml +++ b/.github/dependabot.yml @@ -8,3 +8,8 @@ updates: directory: "/doc" schedule: interval: "weekly" + groups: + all-dependencies: + # Groups all updates into a single PR + patterns: + - "*" From 6dadbfc4ce6c546802ea737361520674cf178608 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Wed, 12 Nov 2025 14:07:34 +0000 Subject: [PATCH 671/967] Bump @antora/cli from 3.1.10 to 3.1.14 in /doc Bumps [@antora/cli](https://gitlab.com/antora/antora) from 3.1.10 to 3.1.14. - [Changelog](https://gitlab.com/antora/antora/blob/main/CHANGELOG.adoc) - [Commits](https://gitlab.com/antora/antora/compare/v3.1.10...v3.1.14) --- updated-dependencies: - dependency-name: "@antora/cli" dependency-version: 3.1.14 dependency-type: direct:development update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] --- doc/package-lock.json | 45 +++++++++++++++++++++++++++++++++++++------ doc/package.json | 2 +- 2 files changed, 40 insertions(+), 7 deletions(-) diff --git a/doc/package-lock.json b/doc/package-lock.json index 5006ffff8..eaed955ec 100644 --- a/doc/package-lock.json +++ b/doc/package-lock.json @@ -5,7 +5,7 @@ "packages": { "": { "devDependencies": { - "@antora/cli": "3.1.10", + "@antora/cli": "3.1.14", "@antora/site-generator": "3.1.10", "antora": "3.1.14" } @@ -25,13 +25,14 @@ } }, "node_modules/@antora/cli": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/cli/-/cli-3.1.10.tgz", - "integrity": "sha512-gp8u9aVM0w1DtWSsB5PwvEfFYKrooPENLhN58RAfdgTrcsTsWw+CDysFZPgEaHB0Y1ZbanR82ZH/f6JVKGcZfQ==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/cli/-/cli-3.1.14.tgz", + "integrity": "sha512-I6WcygMU2bFInjdURJjkYjo7K5M8B3lBB53v9OO0IcY0LhEY8Wa7IlZ7wVinf5qEjHvaYzRGTZVl6RsJtVt7Sw==", "dev": true, + "license": "MPL-2.0", "dependencies": { - "@antora/logger": "3.1.10", - "@antora/playbook-builder": "3.1.10", + "@antora/logger": "3.1.14", + "@antora/playbook-builder": "3.1.14", "@antora/user-require-helper": "~3.0", "commander": "~11.1" }, @@ -42,6 +43,38 @@ "node": ">=16.0.0" } }, + "node_modules/@antora/cli/node_modules/@antora/logger": { + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/logger/-/logger-3.1.14.tgz", + "integrity": "sha512-kVEeGqZbXR903hPIm+BlN97fLdQ3LoUzE/BOPZ6vRp9m9Mmbnm67Kg7fSYkfTMLB0S2UWpAPFg22RdsU5ZoAzA==", + "dev": true, + "license": "MPL-2.0", + "dependencies": { + "@antora/expand-path-helper": "~3.0", + "pino": "~9.2", + "pino-pretty": "~11.2", + "sonic-boom": "~4.0" + }, + "engines": { + "node": ">=16.0.0" + } + }, + "node_modules/@antora/cli/node_modules/@antora/playbook-builder": { + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/playbook-builder/-/playbook-builder-3.1.14.tgz", + "integrity": "sha512-Ss2r7In00u/n9Da+JOxEqIE8NeRosf+f+agzH3Te09JV/mpgZKxEOE5V/VuP+TNNq4ww1eu5aOS8DiU2PYwj4Q==", + "dev": true, + "license": "MPL-2.0", + "dependencies": { + "@iarna/toml": "~2.2", + "convict": "~6.2", + "js-yaml": "~4.1", + "json5": "~2.2" + }, + "engines": { + "node": ">=16.0.0" + } + }, "node_modules/@antora/content-aggregator": { "version": "3.1.10", "resolved": "https://registry.npmjs.org/@antora/content-aggregator/-/content-aggregator-3.1.10.tgz", diff --git a/doc/package.json b/doc/package.json index 753f84497..d08287b9b 100644 --- a/doc/package.json +++ b/doc/package.json @@ -1,6 +1,6 @@ { "devDependencies": { - "@antora/cli": "3.1.10", + "@antora/cli": "3.1.14", "@antora/site-generator": "3.1.10", "antora": "3.1.14" } From 9f988cdc18bbd0923a32b237b209fc5185b880e5 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Wed, 12 Nov 2025 16:15:53 +0100 Subject: [PATCH 672/967] Bump @antora/site-generator from 3.1.10 to 3.1.14 in /doc Bumps [@antora/site-generator](https://gitlab.com/antora/antora) from 3.1.10 to 3.1.14. - [Changelog](https://gitlab.com/antora/antora/blob/main/CHANGELOG.adoc) - [Commits](https://gitlab.com/antora/antora/compare/v3.1.10...v3.1.14) --- updated-dependencies: - dependency-name: "@antora/site-generator" dependency-version: 3.1.14 dependency-type: direct:development update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] --- doc/package-lock.json | 433 ++++++++++++++++++++++++++++++------------ doc/package.json | 2 +- 2 files changed, 312 insertions(+), 123 deletions(-) diff --git a/doc/package-lock.json b/doc/package-lock.json index eaed955ec..46a8a8868 100644 --- a/doc/package-lock.json +++ b/doc/package-lock.json @@ -5,18 +5,19 @@ "packages": { "": { "devDependencies": { + "@antora/site-generator": "3.1.14", "@antora/cli": "3.1.14", - "@antora/site-generator": "3.1.10", "antora": "3.1.14" } }, "node_modules/@antora/asciidoc-loader": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/asciidoc-loader/-/asciidoc-loader-3.1.10.tgz", - "integrity": "sha512-np0JkOV37CK7V4eDZUZXf4fQuCKYW3Alxl8FlyzBevXi2Ujv29O82JLbHbv1cyTsvGkGNNB+gzJIx9XBsQ7+Nw==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/asciidoc-loader/-/asciidoc-loader-3.1.14.tgz", + "integrity": "sha512-4xxisnoBFrlLNY6f3xZtyyfgm+tBLsqesTcEStfc8jtXUMYJ4b2DWIzo1vULmxvZ7yY5+Q7YqEvS5o6kIWAG0A==", "dev": true, + "license": "MPL-2.0", "dependencies": { - "@antora/logger": "3.1.10", + "@antora/logger": "3.1.14", "@antora/user-require-helper": "~3.0", "@asciidoctor/core": "~2.2" }, @@ -24,6 +25,22 @@ "node": ">=16.0.0" } }, + "node_modules/@antora/asciidoc-loader/node_modules/@antora/logger": { + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/logger/-/logger-3.1.14.tgz", + "integrity": "sha512-kVEeGqZbXR903hPIm+BlN97fLdQ3LoUzE/BOPZ6vRp9m9Mmbnm67Kg7fSYkfTMLB0S2UWpAPFg22RdsU5ZoAzA==", + "dev": true, + "license": "MPL-2.0", + "dependencies": { + "@antora/expand-path-helper": "~3.0", + "pino": "~9.2", + "pino-pretty": "~11.2", + "sonic-boom": "~4.0" + }, + "engines": { + "node": ">=16.0.0" + } + }, "node_modules/@antora/cli": { "version": "3.1.14", "resolved": "https://registry.npmjs.org/@antora/cli/-/cli-3.1.14.tgz", @@ -76,13 +93,14 @@ } }, "node_modules/@antora/content-aggregator": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/content-aggregator/-/content-aggregator-3.1.10.tgz", - "integrity": "sha512-OT6ZcCA7LrtNfrAZUr3hFh+Z/1isKpsfnqFjCDC66NEMqIyzJO99jq0CM66rYlYhyX7mb5BwEua8lHcwpOXNow==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/content-aggregator/-/content-aggregator-3.1.14.tgz", + "integrity": "sha512-FVuBgnrGPiktYqK1WHbGF8O8l4m5KHlkxoJumrbacgFo8SKuiRFEo31zalxrCUsv8QM3UBEgX+LdHrve/9CGLg==", "dev": true, + "license": "MPL-2.0", "dependencies": { "@antora/expand-path-helper": "~3.0", - "@antora/logger": "3.1.10", + "@antora/logger": "3.1.14", "@antora/user-require-helper": "~3.0", "braces": "~3.0", "cache-directory": "~2.0", @@ -101,14 +119,31 @@ "node": ">=16.0.0" } }, + "node_modules/@antora/content-aggregator/node_modules/@antora/logger": { + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/logger/-/logger-3.1.14.tgz", + "integrity": "sha512-kVEeGqZbXR903hPIm+BlN97fLdQ3LoUzE/BOPZ6vRp9m9Mmbnm67Kg7fSYkfTMLB0S2UWpAPFg22RdsU5ZoAzA==", + "dev": true, + "license": "MPL-2.0", + "dependencies": { + "@antora/expand-path-helper": "~3.0", + "pino": "~9.2", + "pino-pretty": "~11.2", + "sonic-boom": "~4.0" + }, + "engines": { + "node": ">=16.0.0" + } + }, "node_modules/@antora/content-classifier": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/content-classifier/-/content-classifier-3.1.10.tgz", - "integrity": "sha512-3JJl4IIiTX00v/MirK603NoqIcHjGYAaRWt3Q4U03tI1Fv2Aho/ypO3FE45069jFf0Dx2uDJfp5kapb9gaIjdQ==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/content-classifier/-/content-classifier-3.1.14.tgz", + "integrity": "sha512-y8Fk+KU1lqD3aawOu3ZFK92YfOZ1k3YBJhLI9QIFM6Ck4STPnf7AwYbhfOtjODlwer5/OhFmfhjUB2hn7onGnA==", "dev": true, + "license": "MPL-2.0", "dependencies": { - "@antora/asciidoc-loader": "3.1.10", - "@antora/logger": "3.1.10", + "@antora/asciidoc-loader": "3.1.14", + "@antora/logger": "3.1.14", "mime-types": "~2.1", "vinyl": "~3.0" }, @@ -116,13 +151,30 @@ "node": ">=16.0.0" } }, + "node_modules/@antora/content-classifier/node_modules/@antora/logger": { + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/logger/-/logger-3.1.14.tgz", + "integrity": "sha512-kVEeGqZbXR903hPIm+BlN97fLdQ3LoUzE/BOPZ6vRp9m9Mmbnm67Kg7fSYkfTMLB0S2UWpAPFg22RdsU5ZoAzA==", + "dev": true, + "license": "MPL-2.0", + "dependencies": { + "@antora/expand-path-helper": "~3.0", + "pino": "~9.2", + "pino-pretty": "~11.2", + "sonic-boom": "~4.0" + }, + "engines": { + "node": ">=16.0.0" + } + }, "node_modules/@antora/document-converter": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/document-converter/-/document-converter-3.1.10.tgz", - "integrity": "sha512-qi9ctgcKal8tZtWflVo66w+4zCJoBmUKRV+eA9aRRR09KDdU9r514vu1adWNgniPppISr90zD13V5l2JUy/2CQ==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/document-converter/-/document-converter-3.1.14.tgz", + "integrity": "sha512-f6wFnL+489DI0ZDgoxYWzbxxWqPviRiJ56OHS1NixEfvJ7OpRBDPEbX1xnsIeiyFBgqX4+nY92MsCWKTa+Gf3w==", "dev": true, + "license": "MPL-2.0", "dependencies": { - "@antora/asciidoc-loader": "3.1.10" + "@antora/asciidoc-loader": "3.1.14" }, "engines": { "node": ">=16.0.0" @@ -138,10 +190,11 @@ } }, "node_modules/@antora/file-publisher": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/file-publisher/-/file-publisher-3.1.10.tgz", - "integrity": "sha512-DPR/0d1P+kr3qV4T0Gh81POEO/aCmNWIp/oLUYAhr0HHOcFzgpTUUoLStgcYynZPFRIB7EYKSab+oYSCK17DGA==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/file-publisher/-/file-publisher-3.1.14.tgz", + "integrity": "sha512-fTaAnkyKSOlsxQM1TBFCAmiERA6Q67XleDCD2bMPVgfcENmo0Xfx59KwCHaA92IcRSmMftydlXHPaFxNh0UVsg==", "dev": true, + "license": "MPL-2.0", "dependencies": { "@antora/expand-path-helper": "~3.0", "@antora/user-require-helper": "~3.0", @@ -168,24 +221,26 @@ } }, "node_modules/@antora/navigation-builder": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/navigation-builder/-/navigation-builder-3.1.10.tgz", - "integrity": "sha512-aLMK49nYsSB3mEZbLkmUXDAUYmscv2AFWu+5c3eqVGkQ6Wgyd79WQ6Bz3/TN9YqkzGL+PqGs0G39F0VQzD23Hw==", + "version": "3.1.14", + "resolved": "https://registry.npmjs.org/@antora/navigation-builder/-/navigation-builder-3.1.14.tgz", + "integrity": "sha512-/637YLGD7oUHGSfEfszXkk4ASfIhDAg5Xs9035J1dV07XYRlGqmtUb15rtapbcECpcQFjCyM5jFQYSNNvLrGcQ==", "dev": true, + "license": "MPL-2.0", "dependencies": { - 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Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.", "dev": true, + "license": "ISC", "dependencies": { "once": "^1.3.0", "wrappy": "1" @@ -1354,7 +1510,8 @@ "version": "2.0.4", "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz", "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==", - "dev": true + "dev": true, + "license": "ISC" }, "node_modules/is-callable": { "version": "1.2.7", @@ -1374,6 +1531,7 @@ "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz", "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==", "dev": true, + "license": "MIT", "engines": { "node": ">=0.10.0" } @@ -1383,6 +1541,7 @@ "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz", "integrity": 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"dependencies": { "minimist": "^1.2.5" } @@ -1598,6 +1767,7 @@ "resolved": "https://registry.npmjs.org/multi-progress/-/multi-progress-4.0.0.tgz", "integrity": "sha512-9zcjyOou3FFCKPXsmkbC3ethv51SFPoA4dJD6TscIp2pUmy26kBDZW6h9XofPELrzseSkuD7r0V+emGEeo39Pg==", "dev": true, + "license": "MIT", "peerDependencies": { "progress": "^2.0.0" } @@ -1606,7 +1776,8 @@ "version": "2.6.2", "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz", "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==", - "dev": true + "dev": true, + "license": "MIT" }, "node_modules/on-exit-leak-free": { "version": "2.1.2", @@ -1630,13 +1801,15 @@ "version": "1.0.11", "resolved": "https://registry.npmjs.org/pako/-/pako-1.0.11.tgz", "integrity": "sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw==", - "dev": true + "dev": true, + "license": "(MIT AND Zlib)" }, "node_modules/path-is-absolute": { "version": "1.0.1", "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz", "integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==", "dev": true, + "license": "MIT", "engines": { "node": ">=0.10.0" } @@ -1645,13 +1818,15 @@ "version": "1.2.0", "resolved": "https://registry.npmjs.org/pend/-/pend-1.2.0.tgz", "integrity": "sha512-F3asv42UuXchdzt+xXqfW1OGlVBe+mxa2mqI0pg5yAHZPvFmY3Y6drSf/GQ1A86WgWEN9Kzh/WrgKa6iGcHXLg==", - "dev": true + "dev": true, + "license": "MIT" }, "node_modules/picomatch": { - "version": "4.0.2", - "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.2.tgz", - "integrity": "sha512-M7BAV6Rlcy5u+m6oPhAPFgJTzAioX/6B0DxyvDlo9l8+T3nLKbrczg2WLUyzd45L8RqfUMyGPzekbMvX2Ldkwg==", + "version": "4.0.3", + "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz", + "integrity": 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"sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==", "dev": true, + "license": "MIT", "engines": { "node": ">=0.10.0" } }, "node_modules/reusify": { - "version": "1.0.4", - "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz", - "integrity": "sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==", + "version": "1.1.0", + "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.1.0.tgz", + "integrity": "sha512-g6QUff04oZpHs0eG5p83rFLhHeV00ug/Yf9nZM6fLeUrPguBTkTQOdpAWWspMh55TZfVQDPaN3NQJfbVRAxdIw==", "dev": true, + "license": "MIT", "engines": { "iojs": ">=1.0.0", "node": ">=0.10.0" @@ -1915,6 +2091,7 @@ "url": "https://feross.org/support" } ], + "license": "MIT", "dependencies": { "queue-microtask": "^1.2.2" } @@ -1997,7 +2174,8 @@ "version": "1.0.4", "resolved": "https://registry.npmjs.org/should-proxy/-/should-proxy-1.0.4.tgz", "integrity": "sha512-RPQhIndEIVUCjkfkQ6rs6sOR6pkxJWCNdxtfG5pP0RVgUYbK5911kLTF0TNcCC0G3YCGd492rMollFT2aTd9iQ==", - "dev": true + "dev": true, + "license": "MIT" }, "node_modules/simple-concat": { "version": "1.0.1", @@ -2017,7 +2195,8 @@ "type": "consulting", "url": "https://feross.org/support" } - ] + ], + "license": "MIT" }, "node_modules/simple-get": { "version": "4.0.1", @@ -2038,6 +2217,7 @@ "url": "https://feross.org/support" } ], + "license": "MIT", "dependencies": { "decompress-response": "^6.0.0", "once": "^1.3.1", @@ -2058,6 +2238,7 @@ "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz", "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==", "dev": true, + "license": "BSD-3-Clause", "engines": { "node": ">=0.10.0" } @@ -2072,17 +2253,15 @@ } }, "node_modules/streamx": { - "version": "2.21.1", - "resolved": "https://registry.npmjs.org/streamx/-/streamx-2.21.1.tgz", - "integrity": "sha512-PhP9wUnFLa+91CPy3N6tiQsK+gnYyUNuk15S3YG/zjYE7RuPeCjJngqnzpC31ow0lzBHQ+QGO4cNJnd0djYUsw==", + "version": "2.23.0", + "resolved": "https://registry.npmjs.org/streamx/-/streamx-2.23.0.tgz", + "integrity": "sha512-kn+e44esVfn2Fa/O0CPFcex27fjIL6MkVae0Mm6q+E6f0hWv578YCERbv+4m02cjxvDsPKLnmxral/rR6lBMAg==", "dev": true, + "license": "MIT", "dependencies": { + "events-universal": "^1.0.0", "fast-fifo": "^1.3.2", - "queue-tick": "^1.0.1", "text-decoder": "^1.1.0" - }, - "optionalDependencies": { - "bare-events": "^2.2.0" } }, "node_modules/string_decoder": { @@ -2111,6 +2290,7 @@ "resolved": "https://registry.npmjs.org/teex/-/teex-1.0.1.tgz", "integrity": "sha512-eYE6iEI62Ni1H8oIa7KlDU6uQBtqr4Eajni3wX7rpfXD8ysFx8z0+dri+KWEPWpBsxXfxu58x/0jvTVT1ekOSg==", "dev": true, + "license": "MIT", "dependencies": { "streamx": "^2.12.5" } @@ -2120,6 +2300,7 @@ "resolved": "https://registry.npmjs.org/text-decoder/-/text-decoder-1.2.3.tgz", "integrity": "sha512-3/o9z3X0X0fTupwsYvR03pJ/DjWuqqrfwBgTQzdWDiQSm9KitAyz/9WqsT2JQW7KV2m+bC2ol/zqpW37NHxLaA==", "dev": true, + "license": "Apache-2.0", "dependencies": { "b4a": "^1.6.4" } @@ -2153,6 +2334,7 @@ "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz", "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==", "dev": true, + "license": "MIT", "dependencies": { "is-number": "^7.0.0" }, @@ -2180,6 +2362,7 @@ "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.19.3.tgz", "integrity": "sha512-v3Xu+yuwBXisp6QYTcH4UbH+xYJXqnq2m/LtQVWKWzYc1iehYnLixoQDN9FH6/j9/oybfd6W9Ghwkl8+UMKTKQ==", "dev": true, + "license": "BSD-2-Clause", "optional": true, "bin": { "uglifyjs": "bin/uglifyjs" @@ -2193,6 +2376,7 @@ "resolved": "https://registry.npmjs.org/unxhr/-/unxhr-1.0.1.tgz", "integrity": "sha512-MAhukhVHyaLGDjyDYhy8gVjWJyhTECCdNsLwlMoGFoNJ3o79fpQhtQuzmAE4IxCMDwraF4cW8ZjpAV0m9CRQbg==", "dev": true, + "license": "MIT", "engines": { "node": ">=8.11" } @@ -2201,16 +2385,17 @@ "version": "1.0.2", "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz", "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==", - "dev": true + "dev": true, + "license": "MIT" }, "node_modules/vinyl": { - "version": "3.0.0", - "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-3.0.0.tgz", - "integrity": "sha512-rC2VRfAVVCGEgjnxHUnpIVh3AGuk62rP3tqVrn+yab0YH7UULisC085+NYH+mnqf3Wx4SpSi1RQMwudL89N03g==", + "version": "3.0.1", + "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-3.0.1.tgz", + "integrity": "sha512-0QwqXteBNXgnLCdWdvPQBX6FXRHtIH3VhJPTd5Lwn28tJXc34YqSCWUmkOvtJHBmB3gGoPtrOKk3Ts8/kEZ9aA==", "dev": true, + "license": "MIT", "dependencies": { "clone": "^2.1.2", - "clone-stats": "^1.0.0", "remove-trailing-separator": "^1.1.0", "replace-ext": "^2.0.0", "teex": "^1.0.1" @@ -2245,7 +2430,8 @@ "version": "1.0.0", "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz", "integrity": "sha512-gvVzJFlPycKc5dZN4yPkP8w7Dc37BtP1yczEneOb4uq34pXZcvrtRTmWV8W+Ume+XCxKgbjM+nevkyFPMybd4Q==", - "dev": true + "dev": true, + "license": "MIT" }, "node_modules/wrappy": { "version": "1.0.2", @@ -2258,6 +2444,7 @@ "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz", "integrity": "sha512-1Dly4xqlulvPD3fZUQJLY+FUIeqN3N2MM3uqe4rCJftAvOjFa3jFGfctOgluGx4ahPbUCsZkmJILiP0Vi4T6lQ==", "dev": true, + "license": "MIT", "engines": { "node": ">=4" } @@ -2276,6 +2463,7 @@ "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-3.1.3.tgz", "integrity": "sha512-JCCdmlJJWv7L0q/KylOekyRaUrdEoUxWkWVcgorosTROCFWiS9p2NNPE9Yb91ak7b1N5SxAZEliWpspbZccivw==", "dev": true, + "license": "MIT", "dependencies": { "buffer-crc32": "~0.2.3", "pend": "~1.2.0" @@ -2289,6 +2477,7 @@ "resolved": "https://registry.npmjs.org/yazl/-/yazl-2.5.1.tgz", "integrity": "sha512-phENi2PLiHnHb6QBVot+dJnaAZ0xosj7p3fWl+znIjBDlnMI2PsZCJZ306BPTFOaHf5qdDEI8x5qFrSOBN5vrw==", "dev": true, + "license": "MIT", "dependencies": { "buffer-crc32": "~0.2.3" } diff --git a/doc/package.json b/doc/package.json index d08287b9b..a90ff8b01 100644 --- a/doc/package.json +++ b/doc/package.json @@ -1,7 +1,7 @@ { "devDependencies": { "@antora/cli": "3.1.14", - "@antora/site-generator": "3.1.10", + "@antora/site-generator": "3.1.14", "antora": "3.1.14" } } From 97c85dbb2fae1c5c65b7f120fcca677573c3c12f Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 11:42:08 +0100 Subject: [PATCH 673/967] Add plugin --- doc/decimal-playbook.yml | 6 +- doc/package-lock.json | 139 ++++++++++++++++++++++++++++++++------- doc/package.json | 3 + 3 files changed, 122 insertions(+), 26 deletions(-) diff --git a/doc/decimal-playbook.yml b/doc/decimal-playbook.yml index f32b60b45..258b070bc 100644 --- a/doc/decimal-playbook.yml +++ b/doc/decimal-playbook.yml @@ -10,5 +10,9 @@ output: dir: html ui: bundle: - url: https://github.com/boostorg/website-v2-docs/releases/download/ui-master/ui-bundle.zip + url: https://gitlab.com/antora/antora-ui-default/-/jobs/artifacts/HEAD/raw/build/ui-bundle.zip?job=bundle-stable output_dir: decimal/_ + supplemental_files: ./supplemental-ui +antora: + extensions: + - '@antora/lunr-extension' diff --git a/doc/package-lock.json b/doc/package-lock.json index 46a8a8868..cc53461e0 100644 --- a/doc/package-lock.json +++ b/doc/package-lock.json @@ -4,9 +4,12 @@ "requires": true, "packages": { "": { + "dependencies": { + "@antora/lunr-extension": "^1.0.0-alpha.12" + }, "devDependencies": { - "@antora/site-generator": "3.1.14", "@antora/cli": "3.1.14", + "@antora/site-generator": "3.1.14", "antora": "3.1.14" } }, @@ -205,16 +208,18 @@ "node": ">=16.0.0" } }, - "node_modules/@antora/logger": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/logger/-/logger-3.1.10.tgz", - "integrity": "sha512-WSuIxEP2tVrhWtTj/sIrwBDjpi4ldB/1Kpiu4PXmY4/qeWP8thW6u8nXdwdDcWss5zqkZWjourvWKwVq7y8Wjg==", - "dev": true, + "node_modules/@antora/lunr-extension": { + "version": "1.0.0-alpha.12", + "resolved": "https://registry.npmjs.org/@antora/lunr-extension/-/lunr-extension-1.0.0-alpha.12.tgz", + "integrity": "sha512-iiEXpJae8tCH22ao7kZ4I+eyQ/3IeFIFK1G5I9QLpkCezaVPotI8eLFY7e0xDI+zsqJEfCOsfoZGYXso6xCYlA==", + "license": "MPL-2.0", + "workspaces": [ + "." + ], "dependencies": { - "@antora/expand-path-helper": "~3.0", - "pino": "~9.2", - "pino-pretty": "~11.2", - "sonic-boom": "~4.0" + "htmlparser2": "~9.1", + "lunr": "~2.3", + "lunr-languages": "~1.10" }, "engines": { "node": ">=16.0.0" @@ -264,21 +269,6 @@ "node": ">=16.0.0" } }, - "node_modules/@antora/playbook-builder": { - "version": "3.1.10", - "resolved": "https://registry.npmjs.org/@antora/playbook-builder/-/playbook-builder-3.1.10.tgz", - "integrity": "sha512-UB8UmRYfkKgActTUlotdVS4FKGjaZgTnSXE7Fns1xb3/3HRanWvI+Yze1OmCkGC33cTpoQFnSYp7ySEH8LaiBw==", - "dev": true, - "dependencies": { - "@iarna/toml": "~2.2", - "convict": "~6.2", - "js-yaml": "~4.1", - "json5": "~2.2" - }, - "engines": { - "node": ">=16.0.0" - } - }, "node_modules/@antora/redirect-producer": { "version": "3.1.14", "resolved": "https://registry.npmjs.org/@antora/redirect-producer/-/redirect-producer-3.1.14.tgz", @@ -1101,6 +1091,61 @@ "dev": true, "license": "MIT" }, + "node_modules/dom-serializer": { + "version": "2.0.0", + "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-2.0.0.tgz", + "integrity": "sha512-wIkAryiqt/nV5EQKqQpo3SToSOV9J0DnbJqwK7Wv/Trc92zIAYZ4FlMu+JPFW1DfGFt81ZTCGgDEabffXeLyJg==", + "license": "MIT", + "dependencies": { + "domelementtype": "^2.3.0", + "domhandler": "^5.0.2", + "entities": "^4.2.0" + }, + "funding": { + "url": "https://github.com/cheeriojs/dom-serializer?sponsor=1" + } + }, + "node_modules/domelementtype": { + "version": "2.3.0", + "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-2.3.0.tgz", + "integrity": "sha512-OLETBj6w0OsagBwdXnPdN0cnMfF9opN69co+7ZrbfPGrdpPVNBUj02spi6B1N7wChLQiPn4CSH/zJvXw56gmHw==", + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/fb55" + } + ], + "license": "BSD-2-Clause" + }, + "node_modules/domhandler": { + "version": "5.0.3", + "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-5.0.3.tgz", + "integrity": "sha512-cgwlv/1iFQiFnU96XXgROh8xTeetsnJiDsTc7TYCLFd9+/WNkIqPTxiM/8pSd8VIrhXGTf1Ny1q1hquVqDJB5w==", + "license": "BSD-2-Clause", + "dependencies": { + "domelementtype": "^2.3.0" + }, + "engines": { + "node": ">= 4" + }, + "funding": { + "url": "https://github.com/fb55/domhandler?sponsor=1" + } + }, + "node_modules/domutils": { + "version": "3.2.2", + "resolved": "https://registry.npmjs.org/domutils/-/domutils-3.2.2.tgz", + "integrity": "sha512-6kZKyUajlDuqlHKVX1w7gyslj9MPIXzIFiz/rGu35uC1wMi+kMhQwGhl4lt9unC9Vb9INnY9Z3/ZA3+FhASLaw==", + "license": "BSD-2-Clause", + "dependencies": { + "dom-serializer": "^2.0.0", + "domelementtype": "^2.3.0", + "domhandler": "^5.0.3" + }, + "funding": { + "url": "https://github.com/fb55/domutils?sponsor=1" + } + }, "node_modules/dunder-proto": { "version": "1.0.1", "resolved": "https://registry.npmjs.org/dunder-proto/-/dunder-proto-1.0.1.tgz", @@ -1125,6 +1170,18 @@ "once": "^1.4.0" } }, + "node_modules/entities": { + "version": "4.5.0", + "resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz", + "integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==", + "license": "BSD-2-Clause", + "engines": { + "node": ">=0.12" + }, + "funding": { + "url": "https://github.com/fb55/entities?sponsor=1" + } + }, "node_modules/es-define-property": { "version": "1.0.1", "resolved": "https://registry.npmjs.org/es-define-property/-/es-define-property-1.0.1.tgz", @@ -1464,6 +1521,25 @@ "node": ">=14" } }, + "node_modules/htmlparser2": { + "version": "9.1.0", + "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-9.1.0.tgz", + "integrity": "sha512-5zfg6mHUoaer/97TxnGpxmbR7zJtPwIYFMZ/H5ucTlPZhKvtum05yiPK3Mgai3a0DyVxv7qYqoweaEd2nrYQzQ==", + "funding": [ + "https://github.com/fb55/htmlparser2?sponsor=1", + { + "type": "github", + "url": "https://github.com/sponsors/fb55" + } + ], + "license": "MIT", + "dependencies": { + "domelementtype": "^2.3.0", + "domhandler": "^5.0.3", + "domutils": "^3.1.0", + "entities": "^4.5.0" + } + }, "node_modules/ieee754": { "version": "1.2.1", "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz", @@ -1647,6 +1723,18 @@ "integrity": "sha512-H5ZhCF25riFd9uB5UCkVKo61m3S/xZk1x4wA6yp/L3RFP6Z/eHH1ymQcGLo7J3GMPfm0V/7m1tryHuGVxpqEBQ==", "dev": true }, + "node_modules/lunr": { + "version": "2.3.9", + "resolved": "https://registry.npmjs.org/lunr/-/lunr-2.3.9.tgz", + "integrity": "sha512-zTU3DaZaF3Rt9rhN3uBMGQD3dD2/vFQqnvZCDv4dl5iOzq2IZQqTxu90r4E5J+nP70J3ilqVCrbho2eWaeW8Ow==", + "license": "MIT" + }, + "node_modules/lunr-languages": { + "version": "1.10.0", + "resolved": "https://registry.npmjs.org/lunr-languages/-/lunr-languages-1.10.0.tgz", + "integrity": "sha512-BBjKKcwrieJlzwwc9M5H/MRXGJ2qyOSDx/NXYiwkuKjiLOOoouh0WsDzeqcLoUWcX31y7i8sb8IgsZKObdUCkw==", + "license": "MPL-1.1" + }, "node_modules/math-intrinsics": { "version": "1.1.0", "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz", @@ -1969,6 +2057,7 @@ "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz", "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==", "dev": true, + "peer": true, "engines": { "node": ">=0.4.0" } diff --git a/doc/package.json b/doc/package.json index a90ff8b01..4b00fd905 100644 --- a/doc/package.json +++ b/doc/package.json @@ -3,5 +3,8 @@ "@antora/cli": "3.1.14", "@antora/site-generator": "3.1.14", "antora": "3.1.14" + }, + "dependencies": { + "@antora/lunr-extension": "^1.0.0-alpha.12" } } From 97e2ed5c6b81dedeb1a1fad2540a525b5e36360e Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 11:42:14 +0100 Subject: [PATCH 674/967] Update header and footer --- .../partials/footer-content.hbs | 2 + .../partials/header-content.hbs | 50 +++++++++++++++++++ 2 files changed, 52 insertions(+) create mode 100644 doc/supplemental-ui/partials/footer-content.hbs create mode 100644 doc/supplemental-ui/partials/header-content.hbs diff --git a/doc/supplemental-ui/partials/footer-content.hbs b/doc/supplemental-ui/partials/footer-content.hbs new file mode 100644 index 000000000..7b55a4b04 --- /dev/null +++ b/doc/supplemental-ui/partials/footer-content.hbs @@ -0,0 +1,2 @@ +
+
diff --git a/doc/supplemental-ui/partials/header-content.hbs b/doc/supplemental-ui/partials/header-content.hbs new file mode 100644 index 000000000..137c3541e --- /dev/null +++ b/doc/supplemental-ui/partials/header-content.hbs @@ -0,0 +1,50 @@ +
+ +
+ From 776dadf2da781b97ddabd23db8ba55d7672708f3 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 11:43:35 +0100 Subject: [PATCH 675/967] Completely remove footer --- doc/supplemental-ui/partials/footer-content.hbs | 2 -- 1 file changed, 2 deletions(-) diff --git a/doc/supplemental-ui/partials/footer-content.hbs b/doc/supplemental-ui/partials/footer-content.hbs index 7b55a4b04..e69de29bb 100644 --- a/doc/supplemental-ui/partials/footer-content.hbs +++ b/doc/supplemental-ui/partials/footer-content.hbs @@ -1,2 +0,0 @@ -
-
From c519b2536a40d0e58d59456135398f5a61dc33ca Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 11:55:46 +0100 Subject: [PATCH 676/967] Remove toolbar --- doc/supplemental-ui/partials/toolbar.hbs | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 doc/supplemental-ui/partials/toolbar.hbs diff --git a/doc/supplemental-ui/partials/toolbar.hbs b/doc/supplemental-ui/partials/toolbar.hbs new file mode 100644 index 000000000..e69de29bb From 4bde007f7d55a3592e52334d9752019d4071b182 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 12:01:45 +0100 Subject: [PATCH 677/967] Add pagination --- doc/supplemental-ui/partials/pagination.hbs | 16 ++++++++++++++++ doc/supplemental-ui/partials/toolbar.hbs | 9 +++++++++ 2 files changed, 25 insertions(+) create mode 100644 doc/supplemental-ui/partials/pagination.hbs diff --git a/doc/supplemental-ui/partials/pagination.hbs b/doc/supplemental-ui/partials/pagination.hbs new file mode 100644 index 000000000..902e4a890 --- /dev/null +++ b/doc/supplemental-ui/partials/pagination.hbs @@ -0,0 +1,16 @@ +{{#if (or page.previous page.next)}} + +{{/if}} diff --git a/doc/supplemental-ui/partials/toolbar.hbs b/doc/supplemental-ui/partials/toolbar.hbs index e69de29bb..cf076165a 100644 --- a/doc/supplemental-ui/partials/toolbar.hbs +++ b/doc/supplemental-ui/partials/toolbar.hbs @@ -0,0 +1,9 @@ + From ad0f1c3cee997d742be377c6343d871993499075 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 12:34:49 +0100 Subject: [PATCH 678/967] Add better C++ stylesheet --- doc/supplemental-ui/css/site-extra.css | 134 +++++++++++++++++++ doc/supplemental-ui/partials/head-styles.hbs | 6 + 2 files changed, 140 insertions(+) create mode 100644 doc/supplemental-ui/css/site-extra.css create mode 100644 doc/supplemental-ui/partials/head-styles.hbs diff --git a/doc/supplemental-ui/css/site-extra.css b/doc/supplemental-ui/css/site-extra.css new file mode 100644 index 000000000..bcae2120f --- /dev/null +++ b/doc/supplemental-ui/css/site-extra.css @@ -0,0 +1,134 @@ +/* Overall code block styling - Modern dark theme */ +.listingblock .content pre, +.listingblock .content pre.highlight, +pre.highlight code.language-c\+\+ { + background-color: #1e1e2e !important; + border: 1px solid #313244 !important; + border-radius: 8px !important; + padding: 1.25rem !important; + overflow-x: auto !important; + font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace !important; + font-size: 0.9rem !important; + line-height: 1.6 !important; + box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15) !important; +} + +/* Base code color */ +.listingblock code, +code.language-c\+\+, +code.hljs { + color: #cdd6f4 !important; + background: transparent !important; +} + +/* C++ Syntax Highlighting - highlight.js classes */ + +/* Keywords (int, if, else, while, return, constexpr, etc.) */ +.hljs-keyword, +.hljs-selector-tag { + color: #cba6f7 !important; /* Purple */ + font-weight: 600 !important; +} + +/* Built-in types and namespaces (std, boost, etc.) */ +.hljs-built_in { + color: #89dceb !important; /* Cyan */ +} + +/* Strings */ +.hljs-string, +.hljs-selector-attr, +.hljs-selector-pseudo { + color: #a6e3a1 !important; /* Green */ +} + +/* Comments */ +.hljs-comment, +.hljs-quote { + color: #6c7086 !important; /* Gray */ + font-style: italic !important; +} + +/* Preprocessor directives (#include, #define, #ifndef, etc.) */ +.hljs-meta { + color: #f9e2af !important; /* Yellow */ +} + +/* Meta keywords inside preprocessor (include, define, etc.) */ +.hljs-meta-keyword { + color: #fab387 !important; /* Peach */ + font-weight: 500 !important; +} + +/* Meta strings (header files in #include) */ +.hljs-meta-string { + color: #a6e3a1 !important; /* Green */ +} + +/* Types and class names */ +.hljs-type, +.hljs-class .hljs-title, +.hljs-title.class_ { + color: #89dceb !important; /* Cyan */ + font-weight: 500 !important; +} + +/* Function names */ +.hljs-function .hljs-title, +.hljs-title.function_ { + color: #89b4fa !important; /* Blue */ + font-weight: 500 !important; +} + +/* Numbers */ +.hljs-number, +.hljs-literal { + color: #fab387 !important; /* Peach */ +} + +/* Operators and punctuation */ +.hljs-operator, +.hljs-punctuation { + color: #94e2d5 !important; /* Teal */ +} + +/* Variables and parameters */ +.hljs-variable, +.hljs-params { + color: #cdd6f4 !important; /* Light gray */ +} + +/* Template parameters */ +.hljs-template-tag { + color: #f5c2e7 !important; /* Pink */ +} + +/* Attributes */ +.hljs-attribute { + color: #f38ba8 !important; /* Red */ +} + +/* Selection highlighting */ +.listingblock ::selection, +.hljs ::selection { + background-color: #45475a !important; + color: #f5e0dc !important; +} + +/* Optional: Line numbers if you add them later */ +.listingblock .linenos, +.hljs-ln-numbers { + color: #585b70 !important; + margin-right: 1rem !important; + padding-right: 0.5rem !important; + border-right: 1px solid #313244 !important; + user-select: none !important; +} + +/* Make sure inline code also gets styled */ +code.hljs-inline { + background-color: #313244 !important; + padding: 0.2em 0.4em !important; + border-radius: 3px !important; + font-size: 0.85em !important; +} diff --git a/doc/supplemental-ui/partials/head-styles.hbs b/doc/supplemental-ui/partials/head-styles.hbs new file mode 100644 index 000000000..6b488beb1 --- /dev/null +++ b/doc/supplemental-ui/partials/head-styles.hbs @@ -0,0 +1,6 @@ + + + From 4d8a2cb400ca75111a1f1c14c1e61a901dc60687 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 12:41:55 +0100 Subject: [PATCH 679/967] Leave plain listing blocks alone --- doc/supplemental-ui/css/site-extra.css | 37 ++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/doc/supplemental-ui/css/site-extra.css b/doc/supplemental-ui/css/site-extra.css index bcae2120f..f723e8c70 100644 --- a/doc/supplemental-ui/css/site-extra.css +++ b/doc/supplemental-ui/css/site-extra.css @@ -132,3 +132,40 @@ code.hljs-inline { border-radius: 3px !important; font-size: 0.85em !important; } + +/* Plain listing blocks (output blocks without syntax highlighting) */ +.doc .listingblock:not(:has(.hljs)) > .content > pre, +.doc .listingblock > .content > pre:not(.highlight), +.doc .literalblock > pre { + background-color: #f8f9fa !important; /* Light background */ + color: #24292e !important; /* Dark text */ + border: 1px solid #e1e4e8 !important; + border-radius: 6px !important; + padding: 1rem !important; + font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace !important; + font-size: 0.875rem !important; + line-height: 1.5 !important; +} + +/* Ensure text in plain blocks is dark */ +.doc .listingblock:not(:has(.hljs)) code, +.doc .literalblock code { + color: #24292e !important; /* Dark text */ + background: transparent !important; +} + +/* Alternative: Target blocks that come after "Expected Output:" text */ +.paragraph:has(> p:contains("Expected Output")) + .listingblock > .content > pre { + background-color: #f8f9fa !important; + color: #24292e !important; + border: 1px solid #d73a49 !important; /* Red border for output */ +} + +/* If the blocks have a specific role or class, use this more specific selector */ +.listingblock.output > .content > pre, +.listingblock .content > pre.output { + background-color: #fafbfc !important; + color: #24292e !important; + border-left: 4px solid #28a745 !important; /* Green left border */ + border-radius: 4px !important; +} From f1cca593b01a6f68412776b75b04138b8ae747b2 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 12:42:48 +0100 Subject: [PATCH 680/967] Use improved example notation --- doc/modules/ROOT/pages/examples.adoc | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/doc/modules/ROOT/pages/examples.adoc b/doc/modules/ROOT/pages/examples.adoc index d3f02aa62..1ef36338b 100644 --- a/doc/modules/ROOT/pages/examples.adoc +++ b/doc/modules/ROOT/pages/examples.adoc @@ -263,6 +263,9 @@ Scientific Format with Specified Precision and Padding: We can make one final change to our `` example where instead of using `std::cout`, we use pass:[C++23's] ``. This example can be found in the `examples/` folder as https://github.com/cppalliance/decimal/blob/develop/examples/print.cpp[print.cpp]. + +.`` Example +==== [source, c++] ---- #include @@ -280,8 +283,10 @@ int main() } ---- -Expected Output: ----- +.Expected Output: +.... 03.140e+00 03.141e+00 ----- +.... +==== + From 091a11bfa600bfa240f5809f76a2d8fb5612fb51 Mon Sep 17 00:00:00 2001 From: Matt Borland Date: Thu, 13 Nov 2025 12:45:18 +0100 Subject: [PATCH 681/967] Fix broken link --- doc/supplemental-ui/partials/header-content.hbs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/supplemental-ui/partials/header-content.hbs b/doc/supplemental-ui/partials/header-content.hbs index 137c3541e..12efb2cf6 100644 --- a/doc/supplemental-ui/partials/header-content.hbs +++ b/doc/supplemental-ui/partials/header-content.hbs @@ -1,7 +1,7 @@