mirror of
https://git.do.srb2.org/STJr/SRB2.git
synced 2024-11-29 23:52:30 +00:00
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
// SONIC ROBO BLAST 2
|
|
//-----------------------------------------------------------------------------
|
|
// Copyright (C) 1993-1996 by id Software, Inc.
|
|
// Copyright (C) 1998-2000 by DooM Legacy Team.
|
|
// Copyright (C) 1999-2020 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__
|
|
|
|
// Endianess handling.
|
|
// WAD files are stored little endian.
|
|
#include "endian.h"
|
|
|
|
// Little to big 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
|
|
|
|
// Big to little endian
|
|
#ifdef SRB2_LITTLE_ENDIAN
|
|
#define BIGENDIAN_LONG(x) ((INT32)(((x)>>24)&0xff)|(((x)<<8)&0xff0000)|(((x)>>8)&0xff00)|(((x)<<24)&0xff000000))
|
|
#define BIGENDIAN_SHORT(x) ((INT16)(((x)>>8)|((x)<<8)))
|
|
#else
|
|
#define BIGENDIAN_LONG(x) ((INT32)(x))
|
|
#define BIGENDIAN_SHORT(x) ((INT16)(x))
|
|
#endif
|
|
|
|
#endif
|