modified: inst/include/Rcpp/traits/is_arithmetic.h

Author: Qiang Kou

inst/include/Rcpp/traits/is_arithmetic.h

@@ -59,18 +59,6 @@ namespace traits{
     template<>
     struct is_arithmetic<const wchar_t> : public true_type { };
 
-    template<>
-    struct is_arithmetic<char16_t> : public true_type { };
-
-    template<>
-    struct is_arithmetic<const char16_t> : public true_type { };
-
-    template<>
-    struct is_arithmetic<char32_t> : public true_type { };
-
-    template<>
-    struct is_arithmetic<const char32_t> : public true_type { };
-
     template<>
     struct is_arithmetic<short> : public true_type { };