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 static locale_t loc;
35 #endif
36
37 #include "strtod.h"
38 #include "util/u_call_once.h"
39
40 static void
_mesa_locale_init_once(void)41 _mesa_locale_init_once(void)
42 {
43 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
44 loc = newlocale(LC_CTYPE_MASK, "C", NULL);
45 atexit(_mesa_locale_fini);
46 #endif
47 }
48
49 void
_mesa_locale_init(void)50 _mesa_locale_init(void)
51 {
52 static util_once_flag once = UTIL_ONCE_FLAG_INIT;
53 util_call_once(&once, _mesa_locale_init_once);
54 }
55
56 void
_mesa_locale_fini(void)57 _mesa_locale_fini(void)
58 {
59 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
60 freelocale(loc);
61 #endif
62 }
63
64 /**
65 * Wrapper around strtod which uses the "C" locale so the decimal
66 * point is always '.'
67 */
68 double
_mesa_strtod(const char * s,char ** end)69 _mesa_strtod(const char *s, char **end)
70 {
71 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
72 if (!loc) _mesa_locale_init();
73 return strtod_l(s, end, loc);
74 #else
75 return strtod(s, end);
76 #endif
77 }
78
79
80 /**
81 * Wrapper around strtof which uses the "C" locale so the decimal
82 * point is always '.'
83 */
84 float
_mesa_strtof(const char * s,char ** end)85 _mesa_strtof(const char *s, char **end)
86 {
87 #if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
88 if (!loc) _mesa_locale_init();
89 return strtof_l(s, end, loc);
90 #elif defined(HAVE_STRTOF)
91 return strtof(s, end);
92 #else
93 return (float) strtod(s, end);
94 #endif
95 }
96