Add log10 function

[mborland]

Closes: #58

[codecov]

Codecov Report

❌ Patch coverage is 97.27891% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.5%. Comparing base (c59219b) to head (28980d1).
⚠️ Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
include/boost/safe_numbers/detail/num_digits.hpp	87.1%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           develop     #68     +/-   ##
=========================================
- Coverage     98.6%   98.5%   -0.0%     
=========================================
  Files          105     107      +2     
  Lines         6743    6890    +147     
  Branches      2311    2373     +62     
=========================================
+ Hits          6643    6786    +143     
- Misses          39      43      +4     
  Partials        61      61             

Files with missing lines	Coverage Δ
include/boost/safe_numbers/integer_utilities.hpp	100.0% <100.0%> (ø)
test/test_log10.cpp	100.0% <100.0%> (ø)
include/boost/safe_numbers/detail/num_digits.hpp	87.1% <87.1%> (ø)

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[cppalliance-bot]

An automated preview of the documentation is available at https://68.safe-numbers.prtest3.cppalliance.org/libs/safe_numbers/doc/html/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-02-17 17:24:05 UTC