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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.