stdlib/tst-strtod5.c

   1 /* Tests of strtod in a locale using decimal comma.
   2    Copyright (C) 2007-2023 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 <locale.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <math.h>
  24
  25 #define NBSP "\xc2\xa0"
  26
  27 static const struct
  28 {
  29   const char *in;
  30   double expected;
  31 } tests[] =
  32   {
  33     { "0", 0.0 },
  34     { "000", 0.0 },
  35     { "-0", -0.0 },
  36     { "-000", -0.0 },
  37     { "0,", 0.0 },
  38     { "-0,", -0.0 },
  39     { "0,0", 0.0 },
  40     { "-0,0", -0.0 },
  41     { "0e-10", 0.0 },
  42     { "-0e-10", -0.0 },
  43     { "0,e-10", 0.0 },
  44     { "-0,e-10", -0.0 },
  45     { "0,0e-10", 0.0 },
  46     { "-0,0e-10", -0.0 },
  47     { "0e-1000000", 0.0 },
  48     { "-0e-1000000", -0.0 },
  49     { "0,0e-1000000", 0.0 },
  50     { "-0,0e-1000000", -0.0 },
  51   };
  52 #define NTESTS (sizeof (tests) / sizeof (tests[0]))
  53
  54
  55 static int
  56 do_test (void)
  57 {
  58   if (setlocale (LC_ALL, "cs_CZ.UTF-8") == NULL)
  59     {
  60       puts ("could not set locale");
  61       return 1;
  62     }
  63
  64   int status = 0;
  65
  66   for (int i = 0; i < NTESTS; ++i)
  67     {
  68       char *ep;
  69       double r = strtod (tests[i].in, &ep);
  70
  71       if (*ep != '\0')
  72         {
  73           printf ("%d: got rest string \"%s\", expected \"\"\n", i, ep);
  74           status = 1;
  75         }
  76
  77       if (r != tests[i].expected
  78           || copysign (10.0, r) != copysign (10.0, tests[i].expected))
  79         {
  80           printf ("%d: got wrong results %g, expected %g\n",
  81                   i, r, tests[i].expected);
  82           status = 1;
  83         }
  84     }
  85
  86   return status;
  87 }
  88
  89 #include <support/test-driver.c>