iswctype—extensible wide-character test #include <wctype.h>
int iswctype(wint_t c, wctype_t desc);
Description
iswctype is a function which classifies wide-character values using the
wide-character test specified by desc.
Returns
iswctype returns non-zero if and only if c matches the test specified by desc.
If desc is unknown, zero is returned.
Portability
iswctype is C99.
No supporting OS subroutines are required.