tests/test-strtod1.c

   1 /* Test of strtod() in a French locale.
   2    Copyright (C) 2019-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 #include <stdlib.h>
  20
  21 #include <errno.h>
  22 #include <locale.h>
  23
  24 #include "macros.h"
  25
  26 int
  27 main (int argc, char *argv[])
  28 {
  29   /* Try to set the locale by implicitly looking at the LC_ALL environment
  30      variable.
  31      configure should already have checked that the locale is supported.  */
  32   if (setlocale (LC_ALL, "") == NULL)
  33     return 1;
  34
  35   {
  36     const char input[] = "1,";
  37     char *ptr;
  38     double result;
  39     errno = 0;
  40     result = strtod (input, &ptr);
  41     ASSERT (result == 1.0);
  42     ASSERT (ptr == input + 2);
  43     ASSERT (errno == 0);
  44   }
  45   {
  46     const char input[] = ",5";
  47     char *ptr;
  48     double result;
  49     errno = 0;
  50     result = strtod (input, &ptr);
  51     ASSERT (result == 0.5);
  52     ASSERT (ptr == input + 2);
  53     ASSERT (errno == 0);
  54   }
  55   {
  56     const char input[] = "1,5";
  57     char *ptr;
  58     double result;
  59     errno = 0;
  60     result = strtod (input, &ptr);
  61     ASSERT (result == 1.5);
  62     ASSERT (ptr == input + 3);
  63     ASSERT (errno == 0);
  64   }
  65   {
  66     const char input[] = "1.5";
  67     char *ptr;
  68     double result;
  69     errno = 0;
  70     result = strtod (input, &ptr);
  71     /* On AIX 7.2, in the French locale, '.' is recognized as an alternate
  72        radix character.  */
  73     ASSERT ((ptr == input + 1 && result == 1.0)
  74             || (ptr == input + 3 && result == 1.5));
  75     ASSERT (errno == 0);
  76   }
  77   {
  78     const char input[] = "123.456,789";
  79     char *ptr;
  80     double result;
  81     errno = 0;
  82     result = strtod (input, &ptr);
  83     /* On AIX 7.2, in the French locale, '.' is recognized as an alternate
  84        radix character.  */
  85     ASSERT ((ptr == input + 3 && result == 123.0)
  86             || (ptr == input + 7 && result > 123.45 && result < 123.46));
  87     ASSERT (errno == 0);
  88   }
  89   {
  90     const char input[] = "123,456.789";
  91     char *ptr;
  92     double result;
  93     errno = 0;
  94     result = strtod (input, &ptr);
  95     ASSERT (result > 123.45 && result < 123.46);
  96     ASSERT (ptr == input + 7);
  97     ASSERT (errno == 0);
  98   }
  99
 100   return 0;
 101 }