localedata/tst-numeric.c

   1 /* Testing the implementation of LC_NUMERIC and snprintf().
   2    Copyright (C) 2003-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <stdio.h>
  21 #include <locale.h>
  22 #include <string.h>
  23 #include <stdlib.h>
  24
  25 /*
  26   test-numeric gets called with three parameters:
  27    - the locale
  28    - the format-string to be used
  29    - the actual number to be formatted
  30    - the expected string
  31    If the test passes, test-numeric terminates with returncode 0,
  32    otherwise with 1
  33 */
  34 #define EXIT_SUCCESS 0
  35 #define EXIT_FAILURE 1
  36 #define EXIT_SETLOCALE 2
  37 #define EXIT_SNPRINTF 3
  38
  39 int
  40 main (int argc, char *argv[])
  41 {
  42   char s[200];
  43   double val;
  44
  45   /* Make sure to read the value before setting of the locale, as
  46      strtod() is locale-dependent. */
  47   val = strtod (argv[3], NULL);
  48
  49   if (setlocale (LC_ALL, argv[1]) == NULL)
  50     {
  51       fprintf (stderr, "setlocale(LC_ALL, \"%s\"): %m\n", argv[1]);
  52       exit (EXIT_SETLOCALE);
  53     }
  54
  55   if (snprintf (s, sizeof (s), argv[2], val) == -1)
  56     {
  57       perror ("snprintf");
  58       exit (EXIT_SNPRINTF);
  59     }
  60
  61   if (strcmp (s, argv[4]) != 0)
  62     {
  63       printf ("\
  64 locale: \"%s\", format: \"%s\", expected: \"%s\", got: \"%s\" => %s\n",
  65               argv[1], argv[2], argv[4], s,
  66               strcmp (s, argv[4]) != 0 ? "false" : "correct");
  67       exit (EXIT_FAILURE);
  68     }
  69
  70   return EXIT_SUCCESS;
  71 }