/****************************************************************************

	Copyright（c）?2005?by?Intellon?Corp.?ALL?RIGHTS?RESERVED.

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	（Intellon）?and?MAY?NOT?be?copied?by?any?method?or?incorporated?into
	another?program?without?the?express?written?consent?of?Intellon.?This
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????File:		CheckSum.cpp
????
????Author（s）:	Patrick?Tse
				Nozar?Kianian?Fard				2005/09/07
????
????Contains:	CheckSum?Library

	--
	$File:?//eng/sw/panther/releases/1.1.0/main/publically_disclosed/common/CheckSum.cpp?$??
	$Revision:?#1?$?

	$Change:?179672?$
	$Author:?nickk?$?
	$DateTime:?2012/05/08?13:49:12?$?
?
****************************************************************************/

#include?“CheckSum.h“

//?---------------------------------------------------------------------------
//
//	Function:	CCCheckSum::VerifyCheckSum（）
//
//?---------------------------------------------------------------------------
bool?CCCheckSum::VerifyCheckSum（
	const?uint32*?pBufferPtr
	uint32?aLength_Wds
	uint32?aGivenCheckSum
	）
{
	uint32?CheckSum?=?CCCheckSum::GenerateCheckSum（?pBufferPtr?aLength_Wds?）;

	return?（CheckSum?==?aGivenCheckSum）;
}


//?---------------------------------------------------------------------------
//
//	Function:	CCCheckSum::GenerateCheckSum（）
//
//?---------------------------------------------------------------------------
uint32?CCCheckSum::GenerateCheckSum（
	const?uint32*?pBufferPtr
	uint32?aLength_Wds
	）
{
	uint32?CheckSum;
	uint32?vpBufferPtr?=?（uint32）pBufferPtr;
	
	if?（vpBufferPtr?&?0x3）
	{
		CheckSum?=?CCCheckSum::Calc32bitXor（?pBufferPtr?aLength_Wds?）;
	}
	else
	{
		CheckSum?=?CCCheckSum::Calc32bitXor_address_word_aligned（pBufferPtr?aLength_Wds?）;
	}

	CheckSum?=?FinalizeCumulativeChecksum（?CheckSum?）;

	return（?CheckSum?）;//?return?Checksum

}


//?---------------------------------------------------------------------------
uint32?CCCheckSum::GenerateCumulativeChecksum（?
	uint32?aAccumulatedSoFar?
	const?uint32?*?apBufferPtr?
	uint32?aLength_Wds?
	）
{
	uint32?vpBufferPtr?=?（uint32）apBufferPtr;
	if?（vpBufferPtr?&?0x3）
	{
		return?aAccumulatedSoFar?^?CCCheckSum::Calc32bitXor（?apBufferPtr?aLength_Wds?）;
	}
	return?aAccumulatedSoFar?^?CCCheckSum::Calc32bitXor_address_word_aligned（apBufferPtr?aLength_Wds?）;
}
	
uint32?CCCheckSum::FinalizeCumulativeChecksum（?
	uint32?aAccumulatedSoFar?
	）?{
	//-*?One‘s?Compliment?*-//
	return?~aAccumulatedSoFar;
}


//?----------------------------------------