1*53ee8cc1Swenshuai.xi /* Copyright (C) 1997 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 _BYTESWAP_H 20*53ee8cc1Swenshuai.xi #define _BYTESWAP_H 1 21*53ee8cc1Swenshuai.xi 22*53ee8cc1Swenshuai.xi /* Get the machine specific, optimized definitions. */ 23*53ee8cc1Swenshuai.xi #include <bits/byteswap.h> 24*53ee8cc1Swenshuai.xi 25*53ee8cc1Swenshuai.xi 26*53ee8cc1Swenshuai.xi /* The following definitions must all be macros since otherwise some 27*53ee8cc1Swenshuai.xi of the possible optimizations are not possible. */ 28*53ee8cc1Swenshuai.xi 29*53ee8cc1Swenshuai.xi /* Return a value with all bytes in the 16 bit argument swapped. */ 30*53ee8cc1Swenshuai.xi #define bswap_16(x) __bswap_16 (x) 31*53ee8cc1Swenshuai.xi 32*53ee8cc1Swenshuai.xi /* Return a value with all bytes in the 32 bit argument swapped. */ 33*53ee8cc1Swenshuai.xi #define bswap_32(x) __bswap_32 (x) 34*53ee8cc1Swenshuai.xi 35*53ee8cc1Swenshuai.xi #if defined __GNUC__ && __GNUC__ >= 2 36*53ee8cc1Swenshuai.xi /* Return a value with all bytes in the 64 bit argument swapped. */ 37*53ee8cc1Swenshuai.xi # define bswap_64(x) __bswap_64 (x) 38*53ee8cc1Swenshuai.xi #endif 39*53ee8cc1Swenshuai.xi 40*53ee8cc1Swenshuai.xi #endif /* byteswap.h */ 41