SRB2/src/m_swap.h
Dmitry Marakasov 7d52913add Make endianess detection more flexible
And fix it on FreeBSD, where _BIG_ENDIAN is not a flag indicating
big endian machine, but a constant to compare _BYTE_ORDER to.
2014-04-25 02:40:19 +04:00

42 lines
1.1 KiB
C

// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 1998-2000 by DooM Legacy Team.
// Copyright (C) 1999-2014 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 m_swap.h
/// \brief Endianess handling, swapping 16bit and 32bit
#ifndef __M_SWAP__
#define __M_SWAP__
#include "endian.h"
// Endianess handling.
// WAD files are stored little endian.
#ifdef SRB2_BIG_ENDIAN
#define SHORT(x) ((INT16)(\
(((UINT16)(x) & (UINT16)0x00ffU) << 8) \
| \
(((UINT16)(x) & (UINT16)0xff00U) >> 8))) \
#define LONG(x) ((INT32)(\
(((UINT32)(x) & (UINT32)0x000000ffUL) << 24) \
| \
(((UINT32)(x) & (UINT32)0x0000ff00UL) << 8) \
| \
(((UINT32)(x) & (UINT32)0x00ff0000UL) >> 8) \
| \
(((UINT32)(x) & (UINT32)0xff000000UL) >> 24)))
#else
#define SHORT(x) ((INT16)(x))
#define LONG(x) ((INT32)(x))
#endif
#endif