I want to use the htonl function in my ruby c extension, but don't want to use any of the other internet stuff that comes with it. What would be the most minimalistic file to #include that is still portable? Looking through the header files on my computer, I can see that either machine/endian.h or sys/_endian.h would let me use them, although I am not sure if that is a good idea.

c include endianness
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