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NAME

       iswxdigit - test for hexadecimal digit wide character

SYNOPSIS

       #include <wctype.h>

       int iswxdigit (wint_t wc);

DESCRIPTION

       The iswxdigit function is the wide-character equivalent of the isxdigit
       function. It tests whether wc is a wide character belonging to the wide
       character class "xdigit".

       The  wide  character class "xdigit" 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 "xdigit" is disjoint  from  the  wide  character  class
       "cntrl".

       Being  a  subclass  of  the  wide  character  class  "graph",  the wide
       character class "xdigit" 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 "xdigit" is disjoint  from  the  wide  character  class
       "punct".

       The  wide character class "xdigit" always contains at least the letters
       'A' to 'F', 'a' to 'f' and the digits '0' to '9'.

RETURN VALUE

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

CONFORMING TO

       ISO/ANSI C, UNIX98

SEE ALSO

       isxdigit(3), iswctype(3)

NOTES

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