10.72.5 iswblank ¶
POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/iswblank.html
Gnulib module: iswblank
Portability problems fixed by Gnulib:
- This function is missing on some platforms:
Minix 3.1.8, Solaris 9, mingw, MSVC 9, Android 4.4.
- This function is not declared (without
-D_GNU_SOURCE) on some platforms:
glibc 2.8.
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 c32isblank, provided by Gnulib module
c32isblank, operates on 32-bit wide characters and therefore does not
have this limitation.