string/endian.h

   1 /* Copyright (C) 1992, 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifndef _ENDIAN_H
  20 #define _ENDIAN_H       1
  21
  22 #include <features.h>
  23
  24 /* Definitions for byte order, according to significance of bytes, from low
  25    addresses to high addresses.  The value is what you get by putting '4'
  26    in the most significant byte, '3' in the second most significant byte,
  27    '2' in the second least significant byte, and '1' in the least
  28    significant byte.  */
  29
  30 #define __LITTLE_ENDIAN 1234
  31 #define __BIG_ENDIAN    4321
  32 #define __PDP_ENDIAN    3412
  33
  34 /* This file defines `__BYTE_ORDER' for the particular machine.  */
  35 #include <bits/endian.h>
  36
  37 /* Some machines may need to use a different endianness for floating point
  38    values.  */
  39 #ifndef __FLOAT_WORD_ORDER
  40 # define __FLOAT_WORD_ORDER __BYTE_ORDER
  41 #endif
  42
  43 #ifdef  __USE_BSD
  44 # define LITTLE_ENDIAN  __LITTLE_ENDIAN
  45 # define BIG_ENDIAN     __BIG_ENDIAN
  46 # define PDP_ENDIAN     __PDP_ENDIAN
  47 # define BYTE_ORDER     __BYTE_ORDER
  48 #endif
  49
  50 #endif  /* endian.h */