stdlib/tst-strtod1i.c

   1 /* Basic tests for __strtod_internal.
   2    Copyright (C) 1991-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <ctype.h>
  20 #include <locale.h>
  21 #include <stddef.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <errno.h>
  25 #include <string.h>
  26 #include <math.h>
  27
  28 /* Perform a few tests in a locale with thousands separators.  */
  29 static int
  30 do_test (void)
  31 {
  32   static const struct
  33   {
  34     const char *loc;
  35     const char *str;
  36     double exp;
  37     ptrdiff_t nread;
  38   } tests[] =
  39     {
  40       { "de_DE.UTF-8", "1,5", 1.5, 3 },
  41       { "de_DE.UTF-8", "1.5", 1.0, 1 },
  42       { "de_DE.UTF-8", "1.500", 1500.0, 5 },
  43       { "de_DE.UTF-8", "36.893.488.147.419.103.232", 0x1.0p65, 26 }
  44     };
  45 #define ntests (sizeof (tests) / sizeof (tests[0]))
  46   size_t n;
  47   int result = 0;
  48
  49   puts ("\nLocale tests");
  50
  51   for (n = 0; n < ntests; ++n)
  52     {
  53       double d;
  54       char *endp;
  55
  56       if (setlocale (LC_ALL, tests[n].loc) == NULL)
  57         {
  58           printf ("cannot set locale %s\n", tests[n].loc);
  59           result = 1;
  60           continue;
  61         }
  62
  63       d = __strtod_internal (tests[n].str, &endp, 1);
  64       if (d != tests[n].exp)
  65         {
  66           printf ("strtod(\"%s\") returns %g and not %g\n",
  67                   tests[n].str, d, tests[n].exp);
  68           result = 1;
  69         }
  70       else if (endp - tests[n].str != tests[n].nread)
  71         {
  72           printf ("strtod(\"%s\") read %td bytes and not %td\n",
  73                   tests[n].str, endp - tests[n].str, tests[n].nread);
  74           result = 1;
  75         }
  76     }
  77
  78   if (result == 0)
  79     puts ("all OK");
  80
  81   return result ? EXIT_FAILURE : EXIT_SUCCESS;
  82 }
  83
  84 #include <support/test-driver.c>