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libiec61850/hal/inc/platform_endian.h

52 lines
1.3 KiB
C

/*
* platform_endian.h
*
* Copyright 2013-2018 Michael Zillgith
*
* This file is part of libIEC61850.
*
* libIEC61850 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
* (at your option) any later version.
*
* libIEC61850 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 libIEC61850. If not, see <http://www.gnu.org/licenses/>.
*
* See COPYING file for the complete license text.
*/
#ifndef ENDIAN_H_
#define ENDIAN_H_
#ifndef PLATFORM_IS_BIGENDIAN
#ifdef __GNUC__
#ifdef __BYTE_ORDER__
#if (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
#define PLATFORM_IS_BIGENDIAN 1
#endif
#else
/* older versions of GCC have __BYTE_ORDER__ not defined! */
#ifdef __PPC__
#define PLATFORM_IS_BIGENDIAN 1
#endif
#endif /* __BYTE_ORDER__ */
#endif /* __GNUC__ */
#endif
#if (PLATFORM_IS_BIGENDIAN == 1)
# define ORDER_LITTLE_ENDIAN 0
#else
# define ORDER_LITTLE_ENDIAN 1
#endif
#endif /* ENDIAN_H_ */