ISWXDIGIT(3) Linux Programmer's Manual ISWXDIGIT(3)NAMEiswxdigit - 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 belong‐
ing 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-charac‐
ter class "xdigit" is disjoint from the wide-character class "cntrl".
Being a subclass of the wide-character class "graph", the wide-charac‐
ter 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-charac‐
ter 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 ALSOiswctype(3), isxdigit(3)COLOPHON
This page is part of release 3.15 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)