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.

GNU                                               July 25, 1999                                      ISWALPHA(3)