/usr/include/licq/byteorder.h is in licq-dev 1.8.2-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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* Copyright (C) 2008-2010 Anders Olofsson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This header attempts to find endian for the local system and define byte
* swap functions.
* As far as possible it uses system headers as these should know best.
* System headers may also give us native byte swap functions.
*
* Known limitations:
* Middle endian (BYTE_ORDER == PDP_ENDIAN) systems are not handled
*
* The following will be set by this header:
* - Either IS_LITTLE_ENDIAN or IS_BIG_ENDIAN set depending on endian type
* - Byte swap functions defined as: BSWAP_16, BSWAP_32 and BSWAP_64
* - Conversion functions to/from big endian: BE_16, BE_32, BE_64
* - Conversion functions to/from little endian: LE_16, LE_32, LE_64
*/
#ifndef LICQ_BYTEORDER_H
#define LICQ_BYTEORDER_H
#include <stdint.h>
// GNU header for endian and byteswap
// (stdint.h gives us __GLIBC__ to check for)
# ifdef __GLIBC__
# include <endian.h>
# include <byteswap.h>
// GNU defines endian by setting __BYTE_ORDER to __BIG_ENDIAN or __LITTLE_ENDIAN
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define IS_LITTLE_ENDIAN
# endif
# if __BYTE_ORDER == __BIG_ENDIAN
# define IS_BIG_ENDIAN
# endif
// GNU defines bswap functions: bswap_16, bswap_32, bswap_64
# define BSWAP_16(x) bswap_16(x)
# define BSWAP_32(x) bswap_32(x)
# define BSWAP_64(x) bswap_64(x)
// Mac OS X has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the compiler (at least with GCC)
#elif defined(__APPLE__) && defined(__MACH__)
# ifdef __BIG_ENDIAN__
# define IS_BIG_ENDIAN
# endif
# ifdef __LITTLE_ENDIAN__
# define IS_LITTLE_ENDIAN
# endif
// BSD header for endian and byte swap
// Compiler gives us __*BSD__ variables to check for
#elif defined(__FreeBSD__) || defined(__NetBSD__)
# include <sys/endian.h>
// BSD defines endian by setting _BYTE_ORDER to _BIG_ENDIAN or _LITTLE_ENDIAN
# if _BYTE_ORDER == _LITTLE_ENDIAN
# define IS_LITTLE_ENDIAN
# endif
# if _BYTE_ORDER == _BIG_ENDIAN
# define IS_BIG_ENDIAN
# endif
// BSD defines bswap functions: bswap16, bswap32, bswap64
# define BSWAP_16(x) bswap16(x)
# define BSWAP_32(x) bswap32(x)
# define BSWAP_64(x) bswap64(x)
// BSD defines conversion functions: be16toh, be32toh, be64toh, le16toh, le32toh, le64toh
# define BE_16(x) be16toh(x)
# define BE_32(x) be32toh(x)
# define BE_64(x) be64toh(x)
# define LE_16(x) le16toh(x)
# define LE_32(x) le32toh(x)
# define LE_64(x) le64toh(x)
// OpenBSD differs from the other BSD systems
#elif defined(__OpenBSD__)
# include <machine/endian.h>
// BSD defines endian by setting _BYTE_ORDER to _BIG_ENDIAN or _LITTLE_ENDIAN
# if _BYTE_ORDER == _LITTLE_ENDIAN
# define IS_LITTLE_ENDIAN
# endif
# if _BYTE_ORDER == _BIG_ENDIAN
# define IS_BIG_ENDIAN
# endif
// OpenBSD defines bswap functions: swap16, swap32, swap64
# define BSWAP_16(x) swap16(x)
# define BSWAP_32(x) swap32(x)
# define BSWAP_64(x) swap64(x)
// OpenBSD defines conversion functions: betoh16, betoh32, betoh64, letoh16, letoh32, letoh64
# define BE_16(x) betoh16(x)
# define BE_32(x) betoh32(x)
# define BE_64(x) betoh64(x)
# define LE_16(x) letoh16(x)
# define LE_32(x) letoh32(x)
# define LE_64(x) letoh64(x)
// Solaris header for endian and byte swap
#elif defined(__sun) || defined(sun)
# include <sys/byteorder.h>
// Solaris defines endian by setting _LITTLE_ENDIAN or _BIG_ENDIAN
# ifdef _BIG_ENDIAN
# define IS_BIG_ENDIAN
# endif
# ifdef _LITTLE_ENDIAN
# define IS_LITTLE_ENDIAN
# endif
// Solaris 10 defines bswap functions: BSWAP_16, BSWAP_32, BSWAP_64
// Solaris 10 defines conversion functions: BE_16, BE_32, BE_64, LE_16, LE_32, LE_64
// No system specific headers to get endian from, let boost guess from platform type
#else
# include <boost/detail/endian.hpp>
# ifdef BOOST_BIG_ENDIAN
# define IS_BIG_ENDIAN
# endif
# ifdef BOOST_LITTLE_ENDIAN
# define IS_LITTLE_ENDIAN
# endif
#endif
// Make sure we got some kind of endian (but not both)
#if defined(IS_BIG_ENDIAN) == defined(IS_LITTLE_ENDIAN)
# error "Failed to get endian type for this system"
#endif
// Define bswap functions if we didn't get any from the system headers
#ifndef BSWAP_16
# define BSWAP_16(x) ( \
((uint16_t)(x) & 0x00ffU) << 8 | \
((uint16_t)(x) & 0xff00U) >> 8)
#endif
#ifndef BSWAP_32
# define BSWAP_32(x) ( \
((uint32_t)(x) & 0x000000ffU) << 24 | \
((uint32_t)(x) & 0x0000ff00U) << 8 | \
((uint32_t)(x) & 0x00ff0000U) >> 8 | \
((uint32_t)(x) & 0xff000000U) >> 24)
#endif
#ifndef BSWAP_64
# define BSWAP_64(x) ( \
((uint64_t)(x) & 0x00000000000000ffULL) << 56 | \
((uint64_t)(x) & 0x000000000000ff00ULL) << 40 | \
((uint64_t)(x) & 0x0000000000ff0000ULL) << 24 | \
((uint64_t)(x) & 0x00000000ff000000ULL) << 8 | \
((uint64_t)(x) & 0x000000ff00000000ULL) >> 8 | \
((uint64_t)(x) & 0x0000ff0000000000ULL) >> 24 | \
((uint64_t)(x) & 0x00ff000000000000ULL) >> 40 | \
((uint64_t)(x) & 0xff00000000000000ULL) >> 56)
#endif
// Define conversion functions if we didn't get any from the system headers
#ifndef BE_16
// Big endian system, swap when converting to/from little endian
# if defined IS_BIG_ENDIAN
# define BE_16(x) (x)
# define BE_32(x) (x)
# define BE_64(x) (x)
# define LE_16(x) BSWAP_16(x)
# define LE_32(x) BSWAP_32(x)
# define LE_64(x) BSWAP_64(x)
// Little endian system, swap when converting to/from big endian
# elif defined IS_LITTLE_ENDIAN
# define BE_16(x) BSWAP_16(x)
# define BE_32(x) BSWAP_32(x)
# define BE_64(x) BSWAP_64(x)
# define LE_16(x) (x)
# define LE_32(x) (x)
# define LE_64(x) (x)
# endif
#endif
#endif
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