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     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Intel(R) Integrated Performance Primitives. Cryptography Primitives.
     45 //     Internal EC over GF(p^m) basic Definitions & Function Prototypes
     46 //
     47 //     Context:
     48 //        p224r1_select_ap_w7()
     49 //
     50 */
     51 
     52 #include "owndefs.h"
     53 #include "owncp.h"
     54 #include "pcpgfpecstuff.h"
     55 #include "pcpmask_ct.h"
     56 
     57 /*
     58 // select affine point
     59 */
     60 #if (_IPP32E < _IPP32E_M7)
     61 void p224r1_select_ap_w7(BNU_CHUNK_T* pVal, const BNU_CHUNK_T* pTbl, int idx)
     62 {
     63    #define OPERAND_BITSIZE (224)
     64    #define LEN_P224        (BITS_BNU_CHUNK(OPERAND_BITSIZE))
     65    #define LEN_P224_APOINT (2*LEN_P224)
     66 
     67    const int tblLen = 64;
     68    int i;
     69    unsigned int n;
     70 
     71    /* clear output affine point */
     72    for(n=0; n<LEN_P224_APOINT; n++)
     73       pVal[n] = 0;
     74 
     75    /* select poiint */
     76    for(i=1; i<=tblLen; i++) {
     77       BNU_CHUNK_T mask = cpIsEqu_ct(i, idx);
     78       for(n=0; n<LEN_P224_APOINT; n++)
     79          pVal[n] |= (pTbl[n] & mask);
     80       pTbl += LEN_P224_APOINT;
     81    }
     82 
     83    #undef OPERAND_BITSIZE
     84    #undef LEN_P224
     85    #undef LEN_P224_APOINT
     86 }
     87 #endif
     88