58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
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// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// $Log:$
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//
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// DESCRIPTION:
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// Endianess handling, swapping 16bit and 32bit.
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//
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//-----------------------------------------------------------------------------
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static const char
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rcsid[] = "$Id: m_bbox.c,v 1.1 1997/02/03 22:45:10 b1 Exp $";
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#ifdef __GNUG__
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#pragma implementation "m_swap.h"
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#endif
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#include "m_swap.h"
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// Not needed with big endian.
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#ifndef __BIG_ENDIAN__
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// Swap 16bit, that is, MSB and LSB byte.
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unsigned short SwapSHORT(unsigned short x)
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{
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// No masking with 0xFF should be necessary.
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return (x>>8) | (x<<8);
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}
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// Swapping 32bit.
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unsigned long SwapLONG( unsigned long x)
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{
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return
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(x>>24)
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| ((x>>8) & 0xff00)
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| ((x<<8) & 0xff0000)
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| (x<<24);
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}
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#endif
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