Set_BN
Set_BN
Defines the sign and value of the context.
Syntax
IppStatus ippsSet_BN(IppsBigNumSGN
sgn
, int
length
, const Ipp32u*
pData
, IppsBigNumState*
pBN
);
Include Files
ippcp.h
Parameters
- sgn
- Sign ofIppsBigNumState *x.
- length
- Array length of the input data.
- pData
- Pointer to the data array.
- pBN
- On output, the contextIppsBigNumStateupdated with the input data.
Description
The function defines the sign and value for
IppsBigNumState *
x
with the specified inputs IppsBigNumSGN
sgn
and const Ipp32u *
pData
.Return Values
- ippStsNoErr
- Indicates no error. Any other value indicates an error or warning.
- ippStsNullPtrErr
- Indicates an error condition if any of the specified pointers isNULL.
- ippStsLengthErr
- Indicates an error condition iflengthis less than or equal to 0.
- ippStsOutOfRangeErr
- Indicates an error condition iflengthis more than the size ofIppsBigNumState *pBN.
- ippStsBadArgErr
- Indicates an error condition if the big number is set to zero with the negative sign.
Example
The code example below shows how to create a big number.
IppsBigNumState* New_BN(int size, const Ipp32u* pData=0){ // get the size of the Big Number context int ctxSize; ippsBigNumGetSize(size, &ctxSize); // allocate the Big Number context IppsBigNumState* pBN = (IppsBigNumState*) (new Ipp8u [ctxSize] ); // and initialize one ippsBigNumInit(size, pBN); // if any data was supplied, then set up the Big Number value if(pData) ippsSet_BN(IppsBigNumPOS, size, pData, pBN); // return pointer to the Big Number context for future use return pBN; }