kerneltest/e32test/misc/prbs.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 09:24:54 +0200
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32test\misc\prbs.h
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// 
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//
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#ifndef __PRBS_H__
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#define __PRBS_H__
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#include <e32cmn.h>
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LOCAL_C TUint Random(TUint* aSeed)
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	{
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	TUint x = aSeed[0];
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	TUint r3 = x >> 1;
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	r3 |= (aSeed[1] << 31);
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	aSeed[1] = x & 1;
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	r3 ^= (x << 12);
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	x = r3 ^ (r3 >> 20);
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	aSeed[0] = x;
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	return x;
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	}
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#endif