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

       This  page  is  part of release 4.15 of the Linux man-pages project.  A description of the
       project, information about reporting bugs, and the latest version of  this  page,  can  be
       found at https://www.kernel.org/doc/man-pages/.