NAME

       iswalpha - test for alphabetic wide character

SYNOPSIS

       #include <wctype.h>

       int iswalpha (wint_t wc);

DESCRIPTION

       The  iswalpha  function is the wide-character equivalent of the isalpha function. It tests
       whether wc is a wide character belonging to the wide character class "alpha".

       The wide character class "alpha" is a subclass of the wide character  class  "alnum",  and
       therefore  also  a  subclass of the wide character class "graph" and of the wide character
       class "print".

       Being a subclass of the wide character class "print", the wide character class "alpha"  is
       disjoint from the wide character class "cntrl".

       Being  a subclass of the wide character class "graph", the wide character class "alpha" is
       disjoint from the wide character class "space" and its subclass "blank".

       Being a subclass of the wide character class "alnum", the wide character class "alpha"  is
       disjoint from the wide character class "punct".

       The wide character class "alpha" is disjoint from the wide character class "digit".

       The wide character class "alpha" contains the wide character classes "upper" and "lower".

       The  wide  character class "alpha" always contains at least the letters 'A' to 'Z' and 'a'
       to 'z'.

RETURN VALUE

       The iswalpha function returns non-zero if wc is a wide character  belonging  to  the  wide
       character class "alpha". Otherwise it returns zero.

CONFORMING TO

       ISO/ANSI C, UNIX98

SEE ALSO

       isalpha(3), iswctype(3)

NOTES

       The behaviour of iswalpha depends on the LC_CTYPE category of the current locale.