#include <BigIntegerBase.h>
List of all members.
Static Public Member Functions |
| static void | add (const Uint8 *pui8Data1, Int iSize1, Uint8 *pui8Data2, Int iSize2) |
| static bool | isNegative (const Uint8 *pui8Data, Int iSize) |
| static bool | isZero (const Uint8 *pui8Data, Int iSize) |
| static bool | isZeroEx (const Uint8 *pui8Data, Int &rLastByteChecked) |
| static void | multiply (const Uint8 *pui8Data1, Int iSize1, const Uint8 *pui8Data2, Int iSize2, Uint8 *pui8Result) |
| static void | negate (Uint8 *pui8Data, Int iSize) |
| static void | shiftLeft (Uint8 *pui8Data, Int iSize, Int iShift) |
| static void | shiftLeft8Bit (Uint8 *pui8Data, Int iSize, Int iShift) |
| static void | shiftRight (Uint8 *pui8Data, Int iSize, Int iShift) |
| static void | shiftRight8Bit (Uint8 *pui8Data, Int iSize, Int iShift) |
Detailed Description
implements the base functionality of big integers with bit size >= 64bits
Member Function Documentation
| void TBigIntegerBase::add |
( |
const Uint8 * |
pui8Data1, |
|
|
Int |
iSize1, |
|
|
Uint8 * |
pui8Data2, |
|
|
Int |
iSize2 |
|
) |
| [static] |
adds two big numbers together.
- Parameters:
-
| pui8Data1 | : [IN] first number to add |
| iSize1 | : [IN] size of the first number |
| pui8Data2 | : [INOUT] 2nd number and result |
| iSize2 | : [IN] size of the 2nd number |
| bool zeus::TBigIntegerBase::isNegative |
( |
const Uint8 * |
pui8Data, |
|
|
Int |
iSize |
|
) |
| [inline, static] |
Checks if the number is negative. In this case the top most bit must be set to 1
- Parameters:
-
| pui8Data | : number to check |
| iSize | : size of the number |
- Return values:
-
| true | : number is negative |
| false,: | number is not negative (zero or positive) |
| bool zeus::TBigIntegerBase::isZero |
( |
const Uint8 * |
pui8Data, |
|
|
Int |
iSize |
|
) |
| [inline, static] |
Checks if the number is zero
- Parameters:
-
| pui8Data | : number to check |
| iSize | : size of the number |
- Return values:
-
| true | : number is zero |
| false,: | number is non zero |
| bool zeus::TBigIntegerBase::isZeroEx |
( |
const Uint8 * |
pui8Data, |
|
|
Int & |
rLastByteChecked |
|
) |
| [inline, static] |
Checks if the number is zero. This implements a left to right check and returns the last checked byte which was not zero.
- Parameters:
-
| pui8Data | : number to check |
| rLastByteChecked | : [INOUT] last byte checked |
- Return values:
-
| true | : number is zero |
| false,: | number is non zero |
| void TBigIntegerBase::multiply |
( |
const Uint8 * |
pui8Data1, |
|
|
Int |
iSize1, |
|
|
const Uint8 * |
pui8Data2, |
|
|
Int |
iSize2, |
|
|
Uint8 * |
pui8Result |
|
) |
| [static] |
multiplies two big numbers together in a conventional way. Time complexity is O(n^2).
- Parameters:
-
| pui8Data1 | : [IN] first number |
| iSize1 | : [IN] size of the first number (in bytes) |
| pui8Data2 | : [IN] second number |
| iSize2 | : [IN] size of the second number (in bytes) |
| pui8Result | : [OUT] result. make sure the allocated memory is at least iSize1*iSize2 |
| void zeus::TBigIntegerBase::negate |
( |
Uint8 * |
pui8Data, |
|
|
Int |
iSize |
|
) |
| [inline, static] |
negates the number. This converts the number to the additive inverse element
- Parameters:
-
| pui8Data | : [INOUT] number to negate |
| iSize | : [IN] size of the number |
| void TBigIntegerBase::shiftLeft |
( |
Uint8 * |
pui8Data, |
|
|
Int |
iSize, |
|
|
Int |
iShift |
|
) |
| [static] |
shifts the big number to left
- Parameters:
-
| pui8Data | : [INOUT] Number to shift |
| iSize | : [IN] Size of the number in bytes |
| iShift | : [IN] Number of bits to shift |
| void zeus::TBigIntegerBase::shiftLeft8Bit |
( |
Uint8 * |
pui8Data, |
|
|
Int |
iSize, |
|
|
Int |
iShift |
|
) |
| [inline, static] |
shifts the big number to right (max 7 bits)
- Parameters:
-
| pui8Data | : [INOUT] Number to shift |
| iSize | : [IN] Size of the number in bytes |
| iShift | : [IN] Number of bits to shift |
| void TBigIntegerBase::shiftRight |
( |
Uint8 * |
pui8Data, |
|
|
Int |
iSize, |
|
|
Int |
iShift |
|
) |
| [static] |
shifts the big number to right
- Parameters:
-
| pui8Data | : [INOUT] Number to shift |
| iSize | : [IN] Size of the number in bytes |
| iShift | : [IN] Number of bits to shift |
| void zeus::TBigIntegerBase::shiftRight8Bit |
( |
Uint8 * |
pui8Data, |
|
|
Int |
iSize, |
|
|
Int |
iShift |
|
) |
| [inline, static] |
shifts the big number to right (max 7 bits)
- Parameters:
-
| pui8Data | : [INOUT] Number to shift |
| iSize | : [IN] Size of the number in bytes |
| iShift | : [IN] Number of bits to shift |
The documentation for this class was generated from the following files:
