10.72.23 iswupper ¶
POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/iswupper.html
Gnulib module: wctype-h
Portability problems fixed by Gnulib:
- This function is missing on some platforms:
Minix 3.1.8.
- This function cannot be called from plain inline or extern inline functions
on some platforms:
macOS 10.8.
Portability problems not fixed by Gnulib:
- On Windows and 32-bit AIX platforms,
wchar_t is a 16-bit type and
therefore cannot accommodate all Unicode characters.
However, the Gnulib function c32isupper, provided by Gnulib module
c32isupper, operates on 32-bit wide characters and therefore does not
have this limitation.