ext/ipp/sources/ippcp/pcpgfpelemgetsize.c

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/*
//     Intel(R) Integrated Performance Primitives. Cryptography Primitives.
//     Operations over GF(p).
//
//     Context:
//        ippsGFpElementGetSize()
//
*/
#include "owndefs.h"
#include "owncp.h"

#include "pcpgfpstuff.h"
#include "pcpgfpxstuff.h"
#include "pcptool.h"

//tbcd: temporary excluded: #include <assert.h>

/*F*
// Name: ippsGFpElementGetSize
//
// Purpose: Gets the size of the context for an element of the finite field.
//
// Returns:                   Reason:
//    ippStsNullPtrErr          pGFp == NULL
//                              pBufferSize == NULL
//    ippStsContextMatchErr     incorrect pGFp's context id
//    ippStsNoErr              no error
//
// Parameters:
//    nExponents      Number of exponents.
//    ExpBitSize      Maximum bit size of the exponents.
//    pGFp            Pointer to the context of the finite field.
//    pBufferSize     Pointer to the calculated buffer size in bytes.
//
*F*/

IPPFUN(IppStatus, ippsGFpElementGetSize,(const IppsGFpState* pGFp, int* pElementSize))
{
   IPP_BAD_PTR2_RET(pElementSize, pGFp);
   pGFp = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFp, GFP_ALIGNMENT) );
   IPP_BADARG_RET( !GFP_TEST_ID(pGFp), ippStsContextMatchErr );

   *pElementSize = sizeof(IppsGFpElement)
                  +GFP_FELEN(GFP_PMA(pGFp))*sizeof(BNU_CHUNK_T);
   return ippStsNoErr;
}