iswxdigit (3)
Leading comments
Copyright (c) Bruno Haible <haible@clisp.cons.org> %%%LICENSE_START(GPLv2+_DOC_ONEPARA) This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. %%%LICENSE_END References consulted: GNU glibc-2 source code and manual Dinkumware C library reference http://www.dinkumware.com/ OpenGroup's Single UNIX specificat...
NAME
iswxdigit - test for hexadecimal digit wide characterSYNOPSIS
#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 aqAaq to aqFaq, aqaaq to aqfaq and the digits aq0aq to aq9aq.
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 |