mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-11-28 11:43:09 +03:00
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
// Emacs style mode select -*- C++ -*-
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// $Id:$
|
|
//
|
|
// 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.
|
|
//
|
|
// $Log:$
|
|
//
|
|
// DESCRIPTION:
|
|
// Endianess handling, swapping 16bit and 32bit.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
static const char
|
|
rcsid[] = "$Id: m_bbox.c,v 1.1 1997/02/03 22:45:10 b1 Exp $";
|
|
|
|
|
|
#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
|
|
|
|
|