1 /*

     2 * Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * TStackInteger class implementation

    16 *

    17 */

    18 

    19 

    20 /**

    21  @file 

    22  @internalComponent

    23 */

    24  

    25 #ifndef __STACK_INTEGER_H__

    26 #define __STACK_INTEGER_H__

    27 

    28 #include "bigint.h"

    29 

    30 /** An integer that can be created on the stack.\n\n

    31  * The resulting integers are

    32  * fixed in size and any code that tries to modify their memory allocation

    33  * will panic.  Stack based integers may be modified as long as you can

    34  * guarantee that the resulting integer will fit in the current amount of

    35  * allocated memory.

    36  * If you are not sure which integer you want, you want an RInteger.

    37  * @internalComponent

    38  * @prototype

    39  * @see RInteger

    40  */

    41 template <TUint W=2> 

    42 class TStackInteger : public TInteger

    43 	{

    44 public:

    45 	inline TStackInteger<W>(TUint aInteger) {ConstructStack(W, aInteger);}

    46 	inline TStackInteger<W>(const TInteger& aInteger) {ConstructStack(W, aInteger);}

    47 protected:

    48 	TUint32 iBuf[W];

    49 	};

    50 

    51 typedef TStackInteger<2> TStackInteger64;

    52 typedef TStackInteger<4> TStackInteger128;

    53 typedef TStackInteger<8> TStackInteger256;

    54 typedef TStackInteger<16> TStackInteger512;

    55 typedef TStackInteger<32> TStackInteger1024;

    56 typedef TStackInteger<64> TStackInteger2048;

    57 //Don't make them any bigger than this :).  The last one is 66 words (264 bytes)

    58 

    59 #endif // __STACK_INTEGER_H__