1 /*
2 * Copyright 2010 VMware, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 #include <stdlib.h>
28
29 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
30 #include <locale.h>
31 #ifdef HAVE_XLOCALE_H
32 #include <xlocale.h>
33 #endif
34 #endif
35
36 #include "strtod.h"
37 #include "util/u_call_once.h"
38
39 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
40
41 static locale_t loc;
42
43 static void
_mesa_locale_fini(void)44 _mesa_locale_fini(void)
45 {
46 freelocale(loc);
47 }
48
49 static void
_mesa_locale_init_once(void)50 _mesa_locale_init_once(void)
51 {
52 loc = newlocale(LC_CTYPE_MASK, "C", NULL);
53 atexit(_mesa_locale_fini);
54 }
55
56 static ALWAYS_INLINE locale_t
_mesa_get_locale(void)57 _mesa_get_locale(void)
58 {
59 static util_once_flag once = UTIL_ONCE_FLAG_INIT;
60 util_call_once(&once, _mesa_locale_init_once);
61 return loc;
62 }
63
64 #endif
65
66 /**
67 * Wrapper around strtod which uses the "C" locale so the decimal
68 * point is always '.'
69 */
70 double
_mesa_strtod(const char * s,char ** end)71 _mesa_strtod(const char *s, char **end)
72 {
73 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
74 return strtod_l(s, end, _mesa_get_locale());
75 #else
76 return strtod(s, end);
77 #endif
78 }
79
80
81 /**
82 * Wrapper around strtof which uses the "C" locale so the decimal
83 * point is always '.'
84 */
85 float
_mesa_strtof(const char * s,char ** end)86 _mesa_strtof(const char *s, char **end)
87 {
88 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
89 return strtof_l(s, end, _mesa_get_locale());
90 #elif defined(HAVE_STRTOF)
91 return strtof(s, end);
92 #else
93 return (float) strtod(s, end);
94 #endif
95 }
96