3.17 iswalpha—alphabetic wide character test

Synopsis

#include <wctype.h>
int iswalpha(wint_t c);

Description
iswalpha is a function which classifies wide-character values that are alphabetic.

Returns
iswalpha returns non-zero if c is an alphabetic wide character.

Portability
iswalpha is C99.

No supporting OS subroutines are required.