rounding.c

   1 /*
   2  * A pre-compilation helper program to aid in the creation of rounding.h.
   3  *
   4  * Copyright (C) 2007-2020 Wayne Davison
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, visit the http://fsf.org website.
  18  */
  19
  20 #include "rsync.h"
  21
  22 #define ARRAY_LEN (EXTRA_ROUNDING+1)
  23 #define SIZEOF(x) ((long int)sizeof (x))
  24
  25 struct test {
  26         union file_extras extras[ARRAY_LEN];
  27         struct file_struct file;
  28 };
  29
  30 #define ACTUAL_SIZE     SIZEOF(struct test)
  31 #define EXPECTED_SIZE   (SIZEOF(union file_extras) * ARRAY_LEN + SIZEOF(struct file_struct))
  32
  33  int main(UNUSED(int argc), UNUSED(char *argv[]))
  34 {
  35         static int test_array[1 - 2 * (ACTUAL_SIZE != EXPECTED_SIZE)];
  36         test_array[0] = 0;
  37         return 0;
  38 }