Section (3) iswxdigit
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 _zsingle_quotesz_A_zsingle_quotesz_ to _zsingle_quotesz_F_zsingle_quotesz_, _zsingle_quotesz_a_zsingle_quotesz_ to _zsingle_quotesz_f_zsingle_quotesz_ and the digits _zsingle_quotesz_0_zsingle_quotesz_ to _zsingle_quotesz_9_zsingle_quotesz_.
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 |
COLOPHON
This page is part of release 4.16 of the Linux man-pages
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and the latest version of this page, can be found at
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Copyright (c) Bruno Haible <haibleclisp.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_zsingle_quotesz_s Single UNIX specification http://www.UNIX-systems.org/online.html ISO/IEC 9899:1999 |