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@node iswctype
@section @code{iswctype}
@findex iswctype

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/iswctype.html}

Gnulib module: iswctype

Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8.
@item
This function is declared in @code{<wchar.h>}, not in @code{<wctype.h>}, on
some platforms:
HP-UX 11.00.
@item
This function cannot be called from plain inline or extern inline functions
on some platforms:
OS X 10.8.
@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.
@end itemize