/*

* Copyright (c) 2002-2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   Declaration of the WlanPRNGenerator class.

*

*/

/*

* %version: 6 %

*/

#ifndef WLANPNRGENERATOR_H

#define WLANPNRGENERATOR_H

/**

*  Class implements a pseudorandom number generator of 32 bit unsigned integers

*

*  Full periodic PRN generator. 

*  All the numbers between 0 and 2pow31 - 1 are generated before repeating.

*  Executes efficiently with 32-bit arithmetic

*

*  @lib wlanumac.lib

*  @since S60 v3.1

*/

class WlanPRNGenerator

    {

    enum { EMultiplier = 16807 /* 7pow5 */};

    enum { EModulus = 2147483647 /* 2pow31 - 1 */};

public:

    /**

    * C++ default constructor.

    */

    inline WlanPRNGenerator();

    /**

    * PRN generation function.

    * @since S60 3.1

    * @return generated PRN

    */

    inline TUint32 Generate();

private:

    // Prohibit copy constructor

    WlanPRNGenerator( const WlanPRNGenerator& );

    // Prohibit assigment operator

    WlanPRNGenerator& operator= ( const WlanPRNGenerator& );   

private: // Data

    /** PRN value */

    TUint32 iValue;

    };

#include "UmacPRNGenerator.inl"

#endif      // WLANPNRGENERATOR_H