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10.239 expm1f

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/expm1f.html

Gnulib module: expm1f or expm1f-ieee

Portability problems fixed by either Gnulib module expm1f or expm1f-ieee:

• This function is missing on some platforms: Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, mingw, MSVC 9.
• This function produces wrong results for arguments <= -17.32868 on some platforms: IRIX 6.5.

Portability problems fixed by Gnulib module expm1f-ieee:

• This function returns a positive zero for a minus zero argument on some platforms: AIX 7.2.

Portability problems not fixed by Gnulib: