1 /* Convert string to double, using the C locale.
3 Copyright (C) 2003, 2004, 2006, 2009 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 /* Written by Paul Eggert. */
31 # define C_STRTOD c_strtold
32 # define DOUBLE long double
33 # define STRTOD_L strtold_l
35 # define C_STRTOD c_strtod
36 # define DOUBLE double
37 # define STRTOD_L strtod_l
40 /* c_strtold falls back on strtod if strtold doesn't conform to C99. */
41 #if LONG && HAVE_C99_STRTOLD
42 # define STRTOD strtold
44 # define STRTOD strtod
48 C_STRTOD (char const *nptr, char **endptr)
57 c_locale = newlocale (LC_ALL_MASK, "C", (locale_t) 0);
59 return 0; /* errno is set here */
61 r = STRTOD_L (nptr, endptr, c_locale);
64 freelocale (c_locale);
69 char *saved_locale = setlocale (LC_NUMERIC, NULL);
73 saved_locale = xstrdup (saved_locale);
74 setlocale (LC_NUMERIC, "C");
77 r = STRTOD (nptr, endptr);
81 int saved_errno = errno;
83 setlocale (LC_NUMERIC, saved_locale);