@node iswxdigit
@subsection @code{iswxdigit}
@findex iswxdigit

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/iswxdigit.html}

Gnulib module: iswxdigit
@mindex iswxdigit

Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8.
@item
This function cannot be called from plain inline or extern inline functions
on some platforms:
macOS 10.8.
@item
This function is not ISO C 99 compliant on some platforms:
FreeBSD 14.0, NetBSD 10.0, OpenBSD 7.5, Solaris 11.4, MSVC 14, Haiku, Android.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and
therefore cannot accommodate all Unicode characters.
@mindex c32isxdigit
However, the Gnulib function @code{c32isxdigit}, provided by Gnulib module
@code{c32isxdigit}, operates on 32-bit wide characters and therefore does not
have this limitation.
@end itemize
