1 /*******************************************************************************
2 * Copyright 2002-2018 Intel Corporation
3 * All Rights Reserved.
4 *
5 * If this software was obtained under the Intel Simplified Software License,
6 * the following terms apply:
7 *
8 * The source code, information and material ("Material") contained herein is
9 * owned by Intel Corporation or its suppliers or licensors, and title to such
10 * Material remains with Intel Corporation or its suppliers or licensors. The
11 * Material contains proprietary information of Intel or its suppliers and
12 * licensors. The Material is protected by worldwide copyright laws and treaty
13 * provisions. No part of the Material may be used, copied, reproduced,
14 * modified, published, uploaded, posted, transmitted, distributed or disclosed
15 * in any way without Intel's prior express written permission. No license under
16 * any patent, copyright or other intellectual property rights in the Material
17 * is granted to or conferred upon you, either expressly, by implication,
18 * inducement, estoppel or otherwise. Any license under such intellectual
19 * property rights must be express and approved by Intel in writing.
20 *
21 * Unless otherwise agreed by Intel in writing, you may not remove or alter this
22 * notice or any other notice embedded in Materials by Intel or Intel's
23 * suppliers or licensors in any way.
24 *
25 *
26 * If this software was obtained under the Apache License, Version 2.0 (the
27 * "License"), the following terms apply:
28 *
29 * You may not use this file except in compliance with the License. You may
30 * obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
31 *
32 *
33 * Unless required by applicable law or agreed to in writing, software
34 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
35 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
36 *
37 * See the License for the specific language governing permissions and
38 * limitations under the License.
39 *******************************************************************************/
40
41 /*
42 // Purpose:
43 // Intel(R) Integrated Performance Primitives. Cryptography Primitives.
44 // Internal BNU32 arithmetic.
45 //
46 // Contents:
47 // cpSubMulDgt_BNU32()
48 //
49 */
50
51 #include "owncp.h"
52 #include "pcpbnumisc.h"
53 #include "pcpbnu32misc.h"
54 #include "pcpbnu32arith.h"
55
56 /*F*
57 // Name: cpMulDgt_BNU32
58 //
59 // Purpose: multiply and subtract BNU32.
60 //
61 // Returns:
62 // carry
63 //
64 // Parameters:
65 // pA source
66 // nsA size of A
67 // val digit to mul
68 // pR result
69 //
70 *F*/
71
72 #if !((_IPP32E==_IPP32E_M7) || \
73 (_IPP32E==_IPP32E_U8) || \
74 (_IPP32E==_IPP32E_Y8) || \
75 (_IPP32E>=_IPP32E_E9) || \
76 (_IPP32E==_IPP32E_N8))
cpSubMulDgt_BNU32(Ipp32u * pR,const Ipp32u * pA,cpSize nsA,Ipp32u val)77 Ipp32u cpSubMulDgt_BNU32(Ipp32u* pR, const Ipp32u* pA, cpSize nsA, Ipp32u val)
78 {
79 Ipp32u carry = 0;
80 for(; nsA>0; nsA--) {
81 Ipp64u r = (Ipp64u)*pR - (Ipp64u)(*pA++) * val - carry;
82 *pR++ = LODWORD(r);
83 carry = 0-HIDWORD(r);
84 }
85 return carry;
86 }
87 #endif
88