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 

    22 /**

    23  @file 

    24  @internalComponent

    25 */

    26  

    27 #ifndef __STACK_INTEGER_H__

    28 #define __STACK_INTEGER_H__

    29 

    30 #include "bigint.h"

    31 

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

    33  * The resulting integers are

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

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

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

    37  * allocated memory.  For integers that can dynamically grow see RInteger.

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

    39  * @internalComponent

    40  * @interim

    41  * @see RInteger

    42  */

    43 template <TUint W=2> 

    44 class TStackInteger : public TInteger

    45 	{

    46 public:

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

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

    49 protected:

    50 	TUint32 iBuf[W];

    51 	};

    52 

    53 typedef TStackInteger<2> TStackInteger64;

    54 typedef TStackInteger<4> TStackInteger128;

    55 typedef TStackInteger<8> TStackInteger256;

    56 typedef TStackInteger<16> TStackInteger512;

    57 typedef TStackInteger<32> TStackInteger1024;

    58 typedef TStackInteger<64> TStackInteger2048;

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

    60 

    61 #endif // __STACK_INTEGER_H__