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 "Symbian Foundation License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.symbianfoundation.org/legal/sfl-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