Swap.h

//========================================================================================
// 
// $File$
// 
// Owner: Robin_Briggs
// 
// $Author$
// 
// $DateTime$
// 
// $Revision$
// 
// $Change$
// 
// Copyright 1997-2010 Adobe Systems Incorporated. All rights reserved.
// 
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance 
// with the terms of the Adobe license agreement accompanying it. If you have received
// this file from a source other than Adobe, then your use, modification, or 
// distribution of it requires the prior written permission of Adobe.
// 
//========================================================================================

#ifndef __SWAP__
#define __SWAP__


class ByteSwapReverse
{
public:
 static char SwapChar(char c) 
 { return c; }
 static uint16 SwapInt16(uint16 i) 
 { return (((i&0xFF)<<8) | (i>>8)); }
 static uint32 SwapInt32(uint32 i) 
 { return (((i&0xff000000)>>24)
 | ((i&0x00ff0000)>>8)
 | ((i&0x0000ff00)<<8)
 | ((i&0x000000ff)<<24)); }
 
 static void SwapDouble(double &d)
 {
 uchar* pLeft = (uchar *) &d;
 uchar* pRight = (uchar *) (pLeft + sizeof(double) - 1);
 
 for ( unsigned int n = 0; n < (sizeof(double) / 2); n++ )
 {
 uchar temp = *pLeft;
 *pLeft = *pRight;
 *pRight = temp;
 ++pLeft; --pRight;
 }
 }
};


#endif // __SWAP__