NAME

       iswalnum - test for alphanumeric wide character

SYNOPSIS

       #include <wctype.h>

       int iswalnum (wint_t wc);

DESCRIPTION

       The  iswalnum function is the wide-character equivalent of the isalnum function. It tests whether wc is a
       wide character belonging to the wide character class "alnum".

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

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

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

       The wide character class "alnum" is disjoint from the wide character class "punct".

       The wide character class "alnum" is the union of the wide character classes "alpha" and "digit". As such,
       it also contains the wide character class "xdigit".

       The  wide  character  class  "alnum"  always contains at least the letters 'A' to 'Z', 'a' to 'z' and the
       digits '0' to '9'.

RETURN VALUE

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

CONFORMING TO

       ISO/ANSI C, UNIX98

SEE ALSO

       isalnum(3), iswctype(3)

NOTES

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

GNU                                               July 25, 1999                                      ISWALNUM(3)