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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | NOTES | SEE ALSO | COLOPHONThe Linux Programming Interface


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

NAME         top

       iswxdigit - test for hexadecimal digit wide character

SYNOPSIS         top

       #include <wctype.h>

       int iswxdigit(wint_t wc);

DESCRIPTION         top

       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         top

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

CONFORMING TO         top

       C99.

NOTES         top

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

SEE ALSO         top

       iswctype(3), isxdigit(3)

COLOPHON         top

       This page is part of release 3.32 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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