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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: m_swap.c 4 2005-07-23 16:19:41Z fraggle $
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// $Log$
// Revision 1.1 2005/07/23 16:19:58 fraggle
// Initial revision
//
//
// DESCRIPTION:
// Endianess handling, swapping 16bit and 32bit.
//
//-----------------------------------------------------------------------------
static const char
rcsid[] = "$Id: m_swap.c 4 2005-07-23 16:19:41Z fraggle $";
#ifdef __GNUG__
#pragma implementation "m_swap.h"
#endif
#include "m_swap.h"
// Not needed with big endian.
#ifndef __BIG_ENDIAN__
// Swap 16bit, that is, MSB and LSB byte.
unsigned short SwapSHORT(unsigned short x)
{
// No masking with 0xFF should be necessary.
return (x>>8) | (x<<8);
}
// Swapping 32bit.
unsigned long SwapLONG( unsigned long x)
{
return
(x>>24)
| ((x>>8) & 0xff00)
| ((x<<8) & 0xff0000)
| (x<<24);
}
#endif
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