Edit: byteswap.h
/* Copyright (C) 1997-2018 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 */
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