Kart-Public/src/endian.h
2016-07-06 00:10:19 -04:00

45 lines
1.3 KiB
C

// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 2014-2016 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file endian.h
/// \brief Endian detection
#ifndef __ENDIAN__
#define __ENDIAN__
#if defined(SRB2_BIG_ENDIAN) || defined(SRB2_LITTLE_ENDIAN)
// defined externally
#else
#if defined(__FreeBSD__)
// on FreeBSD, _BIG_ENDIAN is a constant to compare
// _BYTE_ORDER to, not a big-endianess flag
#include <sys/endian.h>
#if _BYTE_ORDER == _BIG_ENDIAN
#define SRB2_BIG_ENDIAN
#else
#define SRB2_LITTLE_ENDIAN
#endif
#elif defined(__BYTE_ORDER__)
// defined by at least gcc and clang
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define SRB2_BIG_ENDIAN
#else
#define SRB2_LITTLE_ENDIAN
#endif
#else
// check used in vanilla SRB2 (may work incorrectly if
// _BIG_ENDIAN is used as on FreeBSD)
#if defined(_BIG_ENDIAN)
#define SRB2_BIG_ENDIAN
#else
#define SRB2_LITTLE_ENDIAN
#endif
#endif
#endif
#endif //__ENDIAN__