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ISWXDIGIT(3)                        Linux Programmer's Manual                        ISWXDIGIT(3)



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.

CONFORMING TO
       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 3.53 of the Linux man-pages project.  A description of the
       project,    and    information    about    reporting    bugs,    can    be    found     at
       http://www.kernel.org/doc/man-pages/.



GNU                                         1999-07-25                               ISWXDIGIT(3)

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