1*53ee8cc1Swenshuai.xi /* Copyright (C) 1992, 1996, 1997, 2000 Free Software Foundation, Inc. 2*53ee8cc1Swenshuai.xi This file is part of the GNU C Library. 3*53ee8cc1Swenshuai.xi 4*53ee8cc1Swenshuai.xi The GNU C Library is free software; you can redistribute it and/or 5*53ee8cc1Swenshuai.xi modify it under the terms of the GNU Lesser General Public 6*53ee8cc1Swenshuai.xi License as published by the Free Software Foundation; either 7*53ee8cc1Swenshuai.xi version 2.1 of the License, or (at your option) any later version. 8*53ee8cc1Swenshuai.xi 9*53ee8cc1Swenshuai.xi The GNU C Library is distributed in the hope that it will be useful, 10*53ee8cc1Swenshuai.xi but WITHOUT ANY WARRANTY; without even the implied warranty of 11*53ee8cc1Swenshuai.xi MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12*53ee8cc1Swenshuai.xi Lesser General Public License for more details. 13*53ee8cc1Swenshuai.xi 14*53ee8cc1Swenshuai.xi You should have received a copy of the GNU Lesser General Public 15*53ee8cc1Swenshuai.xi License along with the GNU C Library; if not, write to the Free 16*53ee8cc1Swenshuai.xi Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17*53ee8cc1Swenshuai.xi 02111-1307 USA. */ 18*53ee8cc1Swenshuai.xi 19*53ee8cc1Swenshuai.xi #ifndef _ENDIAN_H 20*53ee8cc1Swenshuai.xi #define _ENDIAN_H 1 21*53ee8cc1Swenshuai.xi 22*53ee8cc1Swenshuai.xi #include <features.h> 23*53ee8cc1Swenshuai.xi 24*53ee8cc1Swenshuai.xi /* Definitions for byte order, according to significance of bytes, 25*53ee8cc1Swenshuai.xi from low addresses to high addresses. The value is what you get by 26*53ee8cc1Swenshuai.xi putting '4' in the most significant byte, '3' in the second most 27*53ee8cc1Swenshuai.xi significant byte, '2' in the second least significant byte, and '1' 28*53ee8cc1Swenshuai.xi in the least significant byte, and then writing down one digit for 29*53ee8cc1Swenshuai.xi each byte, starting with the byte at the lowest address at the left, 30*53ee8cc1Swenshuai.xi and proceeding to the byte with the highest address at the right. */ 31*53ee8cc1Swenshuai.xi 32*53ee8cc1Swenshuai.xi #define __LITTLE_ENDIAN 1234 33*53ee8cc1Swenshuai.xi #define __BIG_ENDIAN 4321 34*53ee8cc1Swenshuai.xi #define __PDP_ENDIAN 3412 35*53ee8cc1Swenshuai.xi 36*53ee8cc1Swenshuai.xi /* This file defines `__BYTE_ORDER' for the particular machine. */ 37*53ee8cc1Swenshuai.xi #include <bits/endian.h> 38*53ee8cc1Swenshuai.xi 39*53ee8cc1Swenshuai.xi /* Some machines may need to use a different endianness for floating point 40*53ee8cc1Swenshuai.xi values. */ 41*53ee8cc1Swenshuai.xi #ifndef __FLOAT_WORD_ORDER 42*53ee8cc1Swenshuai.xi # define __FLOAT_WORD_ORDER __BYTE_ORDER 43*53ee8cc1Swenshuai.xi #endif 44*53ee8cc1Swenshuai.xi 45*53ee8cc1Swenshuai.xi #ifdef __USE_BSD 46*53ee8cc1Swenshuai.xi # define LITTLE_ENDIAN __LITTLE_ENDIAN 47*53ee8cc1Swenshuai.xi # define BIG_ENDIAN __BIG_ENDIAN 48*53ee8cc1Swenshuai.xi # define PDP_ENDIAN __PDP_ENDIAN 49*53ee8cc1Swenshuai.xi # define BYTE_ORDER __BYTE_ORDER 50*53ee8cc1Swenshuai.xi #endif 51*53ee8cc1Swenshuai.xi 52*53ee8cc1Swenshuai.xi #if __BYTE_ORDER == __LITTLE_ENDIAN 53*53ee8cc1Swenshuai.xi # define __LONG_LONG_PAIR(HI, LO) LO, HI 54*53ee8cc1Swenshuai.xi #elif __BYTE_ORDER == __BIG_ENDIAN 55*53ee8cc1Swenshuai.xi # define __LONG_LONG_PAIR(HI, LO) HI, LO 56*53ee8cc1Swenshuai.xi #endif 57*53ee8cc1Swenshuai.xi 58*53ee8cc1Swenshuai.xi #endif /* endian.h */ 59