os/kernelhwsrv/kerneltest/e32test/misc/prbs.h
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
     2 // All rights reserved.
     3 // This component and the accompanying materials are made available
     4 // under the terms of the License "Eclipse Public License v1.0"
     5 // which accompanies this distribution, and is available
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
     7 //
     8 // Initial Contributors:
     9 // Nokia Corporation - initial contribution.
    10 //
    11 // Contributors:
    12 //
    13 // Description:
    14 // e32test\misc\prbs.h
    15 // 
    16 //
    17 
    18 #ifndef __PRBS_H__
    19 #define __PRBS_H__
    20 #include <e32cmn.h>
    21 
    22 LOCAL_C TUint Random(TUint* aSeed)
    23 	{
    24 	TUint x = aSeed[0];
    25 	TUint r3 = x >> 1;
    26 	r3 |= (aSeed[1] << 31);
    27 	aSeed[1] = x & 1;
    28 	r3 ^= (x << 12);
    29 	x = r3 ^ (r3 >> 20);
    30 	aSeed[0] = x;
    31 	return x;
    32 	}
    33 
    34 #endif