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libiec61850/hal/inc/platform_endian.h

38 lines
686 B
C

/*
* platform_endian.h
*
* Copyright 2013-2021 Michael Zillgith
*
* This file is part of Platform Abstraction Layer (libpal)
* for libiec61850, libmms, and lib60870.
*/
#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_ */