sim/endian.c

   1 /* hostinfo.c
   2    Copyright (C) 1992, 1993 Free Software Foundation, Inc.
   3
   4 This file is part of Z8KSIM
   5
   6 GNU CC 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 2, or (at your option)
   9 any later version.
  10
  11 GNU CC 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
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 /* This prog writes a header file with some host info in it */
  22
  23 union {
  24   int  as_int;
  25   char as_char[4];
  26 } u;
  27
  28
  29 int
  30 main()
  31 {
  32   u.as_int = 0x01020304;
  33   if (u.as_char[0] == 0x01)
  34   {
  35     printf("#define BIG_ENDIAN_HOST\n");
  36   }
  37   else if (u.as_char[0] == 0x04)
  38   {
  39     printf("#define LITTLE_ENDIAN_HOST\n");
  40   }
  41
  42   return 0;
  43
  44 }