|  | /* Copyright (C) 1997-2016 Free Software Foundation, Inc. | 
|  | This file is part of the GNU C Library. | 
|  |  | 
|  | The GNU C Library is free software; you can redistribute it and/or | 
|  | modify it under the terms of the GNU Lesser General Public | 
|  | License as published by the Free Software Foundation; either | 
|  | version 2.1 of the License, or (at your option) any later version. | 
|  |  | 
|  | The GNU C Library is distributed in the hope that it will be useful, | 
|  | but WITHOUT ANY WARRANTY; without even the implied warranty of | 
|  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
|  | Lesser General Public License for more details. | 
|  |  | 
|  | You should have received a copy of the GNU Lesser General Public | 
|  | License along with the GNU C Library; if not, see | 
|  | <http://www.gnu.org/licenses/>.  */ | 
|  |  | 
|  | #ifndef _BYTESWAP_H | 
|  | #define _BYTESWAP_H	1 | 
|  |  | 
|  | #include <features.h> | 
|  |  | 
|  | /* Get the machine specific, optimized definitions.  */ | 
|  | #include <bits/byteswap.h> | 
|  |  | 
|  |  | 
|  | /* The following definitions must all be macros since otherwise some | 
|  | of the possible optimizations are not possible.  */ | 
|  |  | 
|  | /* Return a value with all bytes in the 16 bit argument swapped.  */ | 
|  | #define bswap_16(x) __bswap_16 (x) | 
|  |  | 
|  | /* Return a value with all bytes in the 32 bit argument swapped.  */ | 
|  | #define bswap_32(x) __bswap_32 (x) | 
|  |  | 
|  | /* Return a value with all bytes in the 64 bit argument swapped.  */ | 
|  | #define bswap_64(x) __bswap_64 (x) | 
|  |  | 
|  | #endif /* byteswap.h */ |