stdlib/tst-strtod5i.c

   1 /* Tests of __strtod_internal 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 NNBSP "\xe2\x80\xaf"
  26
  27 static const struct
  28 {
  29   const char *in;
  30   int group;
  31   double expected;
  32 } tests[] =
  33   {
  34     { "0", 0, 0.0 },
  35     { "000", 0, 0.0 },
  36     { "-0", 0, -0.0 },
  37     { "-000", 0, -0.0 },
  38     { "0,", 0, 0.0 },
  39     { "-0,", 0, -0.0 },
  40     { "0,0", 0, 0.0 },
  41     { "-0,0", 0, -0.0 },
  42     { "0e-10", 0, 0.0 },
  43     { "-0e-10", 0, -0.0 },
  44     { "0,e-10", 0, 0.0 },
  45     { "-0,e-10", 0, -0.0 },
  46     { "0,0e-10", 0, 0.0 },
  47     { "-0,0e-10", 0, -0.0 },
  48     { "0e-1000000", 0, 0.0 },
  49     { "-0e-1000000", 0, -0.0 },
  50     { "0,0e-1000000", 0, 0.0 },
  51     { "-0,0e-1000000", 0, -0.0 },
  52     { "0", 1, 0.0 },
  53     { "000", 1, 0.0 },
  54     { "-0", 1, -0.0 },
  55     { "-000", 1, -0.0 },
  56     { "0e-10", 1, 0.0 },
  57     { "-0e-10", 1, -0.0 },
  58     { "0e-1000000", 1, 0.0 },
  59     { "-0e-1000000", 1, -0.0 },
  60     { "000"NNBSP"000"NNBSP"000", 1, 0.0 },
  61     { "-000"NNBSP"000"NNBSP"000", 1, -0.0 }
  62   };
  63 #define NTESTS (sizeof (tests) / sizeof (tests[0]))
  64
  65
  66 static int
  67 do_test (void)
  68 {
  69   if (setlocale (LC_ALL, "cs_CZ.UTF-8") == NULL)
  70     {
  71       puts ("could not set locale");
  72       return 1;
  73     }
  74
  75   int status = 0;
  76
  77   for (int i = 0; i < NTESTS; ++i)
  78     {
  79       char *ep;
  80       double r = __strtod_internal (tests[i].in, &ep, tests[i].group);
  81
  82       if (*ep != '\0')
  83         {
  84           printf ("%d: got rest string \"%s\", expected \"\"\n", i, ep);
  85           status = 1;
  86         }
  87
  88       if (r != tests[i].expected
  89           || copysign (10.0, r) != copysign (10.0, tests[i].expected))
  90         {
  91           printf ("%d: got wrong results %g, expected %g\n",
  92                   i, r, tests[i].expected);
  93           status = 1;
  94         }
  95     }
  96
  97   return status;
  98 }
  99
 100 #include <support/test-driver.c>