We [use compiler builtins on gcc](https://github.com/cppformat/cppformat/blob/master/format.h#L548) [Similar functions](https://msdn.microsoft.com/zh-cn/library/fbxyd7zd%28v=vs.100%29.aspx) exist for MSVC Some implementations: http://stackoverflow.com/questions/355967/how-to-use-msvc-intrinsics-to-get-the-equivalent-of-this-gcc-code http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/support/win32/support.h?view=markup#l124
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vitaut commentedon Feb 19, 2015
Yeah, this is on my TODO list, but I didn't have time to work on it yet. Thanks for the suggestion.