// Copyright 2005 Caleb Epstein

// Copyright 2006 John Maddock

// Distributed under the Boost Software License, Version 1.0. (See accompany-

// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

/*

 * Copyright (c) 1997

 * Silicon Graphics Computer Systems, Inc.

 *

 * Permission to use, copy, modify, distribute and sell this software

 * and its documentation for any purpose is hereby granted without fee,

 * provided that the above copyright notice appear in all copies and

 * that both that copyright notice and this permission notice appear

 * in supporting documentation.  Silicon Graphics makes no

 * representations about the suitability of this software for any

 * purpose.  It is provided "as is" without express or implied warranty.

 */

/*

 * Copyright notice reproduced from <boost/detail/limits.hpp>, from

 * which this code was originally taken.

 *

 * Modified by Caleb Epstein to use <endian.h> with GNU libc and to

 * defined the BOOST_ENDIAN macro.

 */

#ifndef BOOST_DETAIL_ENDIAN_HPP

#define BOOST_DETAIL_ENDIAN_HPP

// GNU libc offers the helpful header <endian.h> which defines

// __BYTE_ORDER

#if defined (__GLIBC__)

# include <endian.h>

# if (__BYTE_ORDER == __LITTLE_ENDIAN)

#  define BOOST_LITTLE_ENDIAN

# elif (__BYTE_ORDER == __BIG_ENDIAN)

#  define BOOST_BIG_ENDIAN

# elif (__BYTE_ORDER == __PDP_ENDIAN)

#  define BOOST_PDP_ENDIAN

# else

#  error Unknown machine endianness detected.

# endif

# define BOOST_BYTE_ORDER __BYTE_ORDER

#elif defined(_BIG_ENDIAN)

# define BOOST_BIG_ENDIAN

# define BOOST_BYTE_ORDER 4321

#elif defined(_LITTLE_ENDIAN)

# define BOOST_LITTLE_ENDIAN

# define BOOST_BYTE_ORDER 1234

#elif defined(__sparc) || defined(__sparc__) \

   || defined(_POWER) || defined(__powerpc__) \

   || defined(__ppc__) || defined(__hpux) \

   || defined(_MIPSEB) || defined(_POWER) \

   || defined(__s390__)

# define BOOST_BIG_ENDIAN

# define BOOST_BYTE_ORDER 4321

#elif defined(__i386__) || defined(__alpha__) \

   || defined(__ia64) || defined(__ia64__) \

   || defined(_M_IX86) || defined(_M_IA64) \

   || defined(_M_ALPHA) || defined(__amd64) \

   || defined(__amd64__) || defined(_M_AMD64) \

   || defined(__x86_64) || defined(__x86_64__) \

   || defined(_M_X64)

# define BOOST_LITTLE_ENDIAN

# define BOOST_BYTE_ORDER 1234

#else

# error The file boost/detail/endian.hpp needs to be set up for your CPU type.

#endif

#endif