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10.239 expl

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/expl.html

Gnulib module: expl

Portability problems fixed by Gnulib:

• This function is missing on some platforms: FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, HP-UX 11, Solaris 9, Cygwin 1.7.x, Android 4.4.
• This function returns 0.0 for all arguments on some platforms: Haiku 2017.
• This function returns NaN for small operands on some platforms: OpenBSD 5.4.
• This function is only defined as a macro with arguments on some platforms: MSVC 14.
• This function produces results which are accurate to only 16 digits on some platforms: musl libc 1.2.2/arm64, musl libc 1.2.2/s390x, NetBSD 10.0.

Portability problems not fixed by Gnulib: