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annotate lib/c-strtod.c @ 5223:eceaa40c3485

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Undo previous change.
author Paul Eggert <eggert@cs.ucla.edu>
date Wed, 08 Sep 2004 23:08:49 +0000
parents 2478b4759f97
children c2d95ab34ea3
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1 /* Convert string to double, using the C locale.
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2
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3 Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software Foundation,
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17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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18
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19 /* Written by Paul Eggert. */
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20
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21 #ifdef HAVE_CONFIG_H
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22 # include <config.h>
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23 #endif
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24
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25 #include "c-strtod.h"
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26
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27 #include <locale.h>
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28 #include <stdlib.h>
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29
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30 #include "xalloc.h"
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31
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32 #if LONG
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33 # define C_STRTOD c_strtold
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34 # define DOUBLE long double
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35 # define STRTOD_L strtold_l
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36 #else
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37 # define C_STRTOD c_strtod
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38 # define DOUBLE double
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39 # define STRTOD_L strtod_l
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40 #endif
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41
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42 /* c_strtold falls back on strtod if strtold isn't declared. */
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43 #if LONG && HAVE_DECL_STRTOLD
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44 # define STRTOD strtold
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45 #else
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46 # define STRTOD strtod
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47 #endif
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48
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49 DOUBLE
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50 C_STRTOD (char const *nptr, char **endptr)
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51 {
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52 DOUBLE r;
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53
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54 #ifdef LC_ALL_MASK
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55
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56 locale_t c_locale = newlocale (LC_ALL_MASK, "C", 0);
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57 r = STRTOD_L (nptr, endptr, c_locale);
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58 freelocale (c_locale);
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59
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60 #else
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61
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62 char *saved_locale = setlocale (LC_NUMERIC, NULL);
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63
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64 if (saved_locale)
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65 {
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66 saved_locale = xstrdup (saved_locale);
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67 setlocale (LC_NUMERIC, "C");
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68 }
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69
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70 r = STRTOD (nptr, endptr);
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71
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72 if (saved_locale)
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73 {
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74 setlocale (LC_NUMERIC, saved_locale);
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75 free (saved_locale);
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76 }
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77
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78 #endif
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79
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80 return r;
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81 }