#29179 is an alternative solution to the same problem.

Any idea what's wrong with the .vcxproj file here, and how to fix it? I don't have a Windows development environment available, and I suspect that the right way to fix is not to edit .vcxproj by hand. (Or is it?)

Any idea what's wrong with the .vcxproj file here, and how to fix it? I don't have a Windows development environment available, and I suspect that the right way to fix is not to edit .vcxproj by hand. (Or is it?)

TBH that's exactly what I did. :) Brett should have access to a Windows box, though.

PR #29179 has landed. Mark suggested to remove all pre-C99 fallbacks except the fixed log1p function. I borrowed your idea and put the body into _math.h. You both are mentioned as co-authors.