localedata/tst-numeric.c

   1 /* Testing the implementation of LC_NUMERIC and snprintf().
   2    Copyright (C) 2003-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Petter Reinholdtsen <pere@hungry.com>, 2003
   5
   6    Based on tst-fmon.c by Jochen Hein <jochen.hein@delphi.central.de>, 1997.
   7
   8    The GNU C Library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU Lesser General Public
  10    License as published by the Free Software Foundation; either
  11    version 2.1 of the License, or (at your option) any later version.
  12
  13    The GNU C Library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    Lesser General Public License for more details.
  17
  18    You should have received a copy of the GNU Lesser General Public
  19    License along with the GNU C Library; if not, see
  20    <http://www.gnu.org/licenses/>.  */
  21
  22 #include <stdio.h>
  23 #include <locale.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26
  27 /*
  28   test-numeric gets called with three parameters:
  29    - the locale
  30    - the format-string to be used
  31    - the actual number to be formatted
  32    - the expected string
  33    If the test passes, test-numeric terminates with returncode 0,
  34    otherwise with 1
  35 */
  36 #define EXIT_SUCCESS 0
  37 #define EXIT_FAILURE 1
  38 #define EXIT_SETLOCALE 2
  39 #define EXIT_SNPRINTF 3
  40
  41 int
  42 main (int argc, char *argv[])
  43 {
  44   char s[200];
  45   double val;
  46
  47   /* Make sure to read the value before setting of the locale, as
  48      strtod() is locale-dependent. */
  49   val = strtod (argv[3], NULL);
  50
  51   if (setlocale (LC_ALL, argv[1]) == NULL)
  52     {
  53       fprintf (stderr, "setlocale(LC_ALL, \"%s\"): %m\n", argv[1]);
  54       exit (EXIT_SETLOCALE);
  55     }
  56
  57   if (snprintf (s, sizeof (s), argv[2], val) == -1)
  58     {
  59       perror ("snprintf");
  60       exit (EXIT_SNPRINTF);
  61     }
  62
  63   if (strcmp (s, argv[4]) != 0)
  64     {
  65       printf ("\
  66 locale: \"%s\", format: \"%s\", expected: \"%s\", got: \"%s\" => %s\n",
  67               argv[1], argv[2], argv[4], s,
  68               strcmp (s, argv[4]) != 0 ? "false" : "correct");
  69       exit (EXIT_FAILURE);
  70     }
  71
  72   return EXIT_SUCCESS;
  73 }