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10.24.5 acoshl ¶

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/acoshl.html

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, Cygwin 1.7.x, mingw, MSVC 9, Android 4.4.
• This function produces results which are accurate to only 16 digits on some platforms: NetBSD 10.0.