endian-c.h

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/*
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or any later version.
 *
 * Hypertable 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef HT_ENDIAN_C_H
#define HT_ENDIAN_C_H

/* GNU libc offers the helpful header <endian.h> which defines __BYTE_ORDER */
#if defined (__GLIBC__)
# include <endian.h>
# if (__BYTE_ORDER == __LITTLE_ENDIAN)
#  define HT_LITTLE_ENDIAN
# elif (__BYTE_ORDER == __BIG_ENDIAN)
#  define HT_BIG_ENDIAN
# elif (__BYTE_ORDER == __PDP_ENDIAN)
#  define HT_PDP_ENDIAN
# else
#  error Unknown machine endianness detected.
# endif
# define HT_BYTE_ORDER __BYTE_ORDER
#elif defined(__sparc) || defined(__sparc__) \
   || defined(_POWER) || defined(__powerpc__) \
   || defined(__ppc__) || defined(__hpux) \
   || defined(_MIPSEB) || defined(_POWER) \
   || defined(__s390__)
# define HT_BIG_ENDIAN
# define HT_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 HT_LITTLE_ENDIAN
# define HT_BYTE_ORDER 1234
#else
# error The file Common/endian.h needs to be set up for your CPU type.
#endif

#endif /* HT_ENDIAN_C_H */