Source release of Wolfenstein 3D Classic Platinum for iOS, 1.1

wolf3d/code/env/arch.c

@@ -0,0 +1,60 @@
+/*
+
+	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;
+}