1 /*
2 Copyright (c) 2002 Red Hat Incorporated.
3 All rights reserved.
4 Modified (m) 2017 Thomas Wolff to refer to generated Unicode data tables.
5
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8
9 Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
11
12 Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
15
16 The name of Red Hat Incorporated may not be used to endorse
17 or promote products derived from this software without specific
18 prior written permission.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
24 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 /*
32 FUNCTION
33 <<iswxdigit>>, <<iswxdigit_l>>---hexadecimal digit wide character test
34
35 INDEX
36 iswxdigit
37
38 INDEX
39 iswxdigit_l
40
41 SYNOPSIS
42 #include <wctype.h>
43 int iswxdigit(wint_t <[c]>);
44
45 #include <wctype.h>
46 int iswxdigit_l(wint_t <[c]>, locale_t <[locale]>);
47
48 DESCRIPTION
49 <<iswxdigit>> is a function which classifies wide character values that
50 are hexadecimal digits.
51
52 <<iswxdigit_l>> is like <<iswxdigit>> but performs the check based on the
53 locale specified by the locale object locale. If <[locale]> is
54 LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
55
56 RETURNS
57 <<iswxdigit>>, <<iswxdigit_l>> return non-zero if <[c]> is a hexadecimal digit wide character.
58
59 PORTABILITY
60 <<iswxdigit>> is C99.
61 <<iswxdigit_l>> is POSIX-1.2008.
62
63 No supporting OS subroutines are required.
64 */
65 #include <_ansi.h>
66 #include <wctype.h>
67
68 int
iswxdigit(wint_t c)69 iswxdigit (wint_t c)
70 {
71 return (c >= (wint_t)'0' && c <= (wint_t)'9')
72 || (c >= (wint_t)'a' && c <= (wint_t)'f')
73 || (c >= (wint_t)'A' && c <= (wint_t)'F');
74 }
75
