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10.19.4 strtoumax ¶

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

Gnulib module: strtoumax

Portability problems fixed by Gnulib:

• This function is missing on some platforms: OpenBSD 3.8, Minix 3.1.8, AIX 5.1, Solaris 9, MSVC 9.

Portability problems not fixed by Gnulib:

• This function is only defined as a macro on some platforms: HP-UX 11.11.
• If no conversion could be performed, this function sets errno to EINVAL on some platforms. Portable programs should check for no conversion by comparing str to *endptr, not by inspecting errno.