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40
41 /*
42 // Purpose:
43 // Intel(R) Integrated Performance Primitives. Cryptography Primitives.
44 // Internal BNU32 arithmetic.
45 //
46 // Contents:
47 // cpAdd_BNU32()
48 //
49 */
50
51 #include "owncp.h"
52 #include "pcpbnumisc.h"
53 #include "pcpbnu32misc.h"
54 #include "pcpbnu32arith.h"
55
56
57 /*F*
58 // Name: cpSub_BNU32
59 //
60 // Purpose: addition BNU32.
61 //
62 // Returns:
63 // carry
64 //
65 // Parameters:
66 // pA source
67 // pB source
68 // ns size
69 // pR result
70 //
71 *F*/
cpAdd_BNU32(Ipp32u * pR,const Ipp32u * pA,const Ipp32u * pB,cpSize ns)72 Ipp32u cpAdd_BNU32(Ipp32u* pR, const Ipp32u* pA, const Ipp32u* pB, cpSize ns)
73 {
74 Ipp32u carry = 0;
75 cpSize i;
76 for(i=0; i<ns; i++) {
77 Ipp64u t = (Ipp64u)carry +pA[i] + pB[i];
78 pR[i] = LODWORD(t);
79 carry = HIDWORD(t);
80 }
81 return carry;
82 }
83