Wolf3D-iOS/wolf3d/newCode/env/arch.c

/*

	Copyright (C) 1997-2001 Id Software, Inc.

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

/*
 *	arch.c: Portable byte swapping.
 *	
 *	Author:	    Id Software, Inc.
 *	Date:	    1997-2001
 *
 */

#include "../wolfiphone.h"


/*
-----------------------------------------------------------------------------
 Function: FloatSwap	-Endian byte swapping on Float value.
 
 Parameters: f -[in] Float value to byte swap.

 Returns: Byte swapped float value.
 
 Notes: 

-----------------------------------------------------------------------------
*/
INLINECALL float FloatSwap( float f )
{
	union
	{
		float	f;
		W8	b[ 4 ];
	
	} dat1, dat2;	
	
	dat1.f = f;
	dat2.b[ 0 ] = dat1.b[ 3 ];
	dat2.b[ 1 ] = dat1.b[ 2 ];
	dat2.b[ 2 ] = dat1.b[ 1 ];
	dat2.b[ 3 ] = dat1.b[ 0 ];
	
	return dat2.f;
}