The issue here is handling portability yourself or let the language and its toolchain do it. The odds that you are doing a better job than the community to hand

The issue here is handling portability yourself or let the language and its toolchain do it. The odds that you are doing a better job than the community to handle portability are pretty low right from the start and they get lower and lower if the laguage is well-supported. My "ugly macros" are tested against my own implementation only. Compiler's are tested against thousands.