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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) func-
       tion.  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
       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 3.22 of the Linux man-pages project.  A description of
       the  project, and information about reporting bugs, can be found at http://www.ker-
       nel.org/doc/man-pages/.



GNU                               1999-07-25                      ISWXDIGIT(3)

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