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12.9 endian.h

LSB specification:
https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/libc-ddefs.html

Specified in POSIX.1-2024. Draft specification:
https://www.austingroupbugs.net/view.php?id=162

Describes the platform’s endianness (byte ordering of words stored in memory). Defines the macros BYTE_ORDER, LITTLE_ENDIAN, BIG_ENDIAN, PDP_ENDIAN.

Gnulib module: endian

Portability problems fixed by Gnulib:

• This header file is missing on some platforms: macOS 14, FreeBSD 13.0, NetBSD 7.1, OpenBSD 3.8, Minix 3.1.8, AIX 7.3.1, HP-UX 11.31, Solaris 11.4, mingw, MSVC 14.

Portability problems not fixed by Gnulib: