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(3) 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 nonzero if wc is a wide character belonging to the wide-character  class
       "xdigit".  Otherwise, it returns zero.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).
       ┌─────────────┬───────────────┬────────────────┐
       │ Interface   │ Attribute     │ Value          │
       ├─────────────┼───────────────┼────────────────┤
       │ iswxdigit() │ Thread safety │ MT-Safe locale │
       └─────────────┴───────────────┴────────────────┘

CONFORMING TO

       POSIX.1-2001, POSIX.1-2008, C99.

NOTES

       The behavior of iswxdigit() depends on the LC_CTYPE category of the current locale.

SEE ALSO

       iswctype(3), isxdigit(3)

COLOPHON

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GNU                                                2015-08-08                                       ISWXDIGIT(3)