diff options
Diffstat (limited to 'ext/ipp/sources/ippcp/pcpmontexp_winsize.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpmontexp_winsize.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpmontexp_winsize.c b/ext/ipp/sources/ippcp/pcpmontexp_winsize.c new file mode 100644 index 0000000..dfc0c02 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpmontexp_winsize.c @@ -0,0 +1,103 @@ +/******************************************************************************* +* Copyright 2003-2018 Intel Corporation +* All Rights Reserved. +* +* If this software was obtained under the Intel Simplified Software License, +* the following terms apply: +* +* The source code, information and material ("Material") contained herein is +* owned by Intel Corporation or its suppliers or licensors, and title to such +* Material remains with Intel Corporation or its suppliers or licensors. The +* Material contains proprietary information of Intel or its suppliers and +* licensors. The Material is protected by worldwide copyright laws and treaty +* provisions. No part of the Material may be used, copied, reproduced, +* modified, published, uploaded, posted, transmitted, distributed or disclosed +* in any way without Intel's prior express written permission. No license under +* any patent, copyright or other intellectual property rights in the Material +* is granted to or conferred upon you, either expressly, by implication, +* inducement, estoppel or otherwise. Any license under such intellectual +* property rights must be express and approved by Intel in writing. +* +* Unless otherwise agreed by Intel in writing, you may not remove or alter this +* notice or any other notice embedded in Materials by Intel or Intel's +* suppliers or licensors in any way. +* +* +* If this software was obtained under the Apache License, Version 2.0 (the +* "License"), the following terms apply: +* +* You may not use this file except in compliance with the License. You may +* obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 +* +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* +* See the License for the specific language governing permissions and +* limitations under the License. +*******************************************************************************/ + +/* +// Contents: +// cpMontExp_WinSize() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpbn.h" +#include "pcpmontgomery.h" +#include "gsscramble.h" + + +#if !defined(_USE_WINDOW_EXP_) +cpSize cpMontExp_WinSize(int bitsize) +{ + UNREFERENCED_PARAMETER(bitsize); + return 1; +} + +#else +/* +// returns (optimal) window width +// Because of safety Window width depend on CACHE LINE size: +// P4,EM64T, ITP - 64 bytes +// XScale - 32 bytes +// Blend - no cache +*/ +#if !((_IPP==_IPP_W7) || (_IPP==_IPP_T7) || \ + (_IPP==_IPP_V8) || (_IPP==_IPP_P8) || \ + (_IPP==_IPP_S8) || (_IPP>=_IPP_G9) || \ + (_IPP32E==_IPP32E_M7) || \ + (_IPP32E==_IPP32E_U8) || (_IPP32E==_IPP32E_Y8) || \ + (_IPP32E==_IPP32E_N8) || (_IPP32E>=_IPP32E_E9)) +cpSize cpMontExp_WinSize(int bitsize) +{ + UNREFERENCED_PARAMETER(bitsize); + return 1; +} +#endif + +#if ((_IPP==_IPP_W7) || (_IPP==_IPP_T7) || \ + (_IPP==_IPP_V8) || (_IPP==_IPP_P8) || \ + (_IPP==_IPP_S8) || (_IPP>=_IPP_G9) || \ + (_IPP32E==_IPP32E_M7) || \ + (_IPP32E==_IPP32E_U8) || (_IPP32E==_IPP32E_Y8) || \ + (_IPP32E==_IPP32E_N8) || (_IPP32E>=_IPP32E_E9)) +cpSize cpMontExp_WinSize(int bitsize) +{ + return + //bitsize>3715? 8 : /*limited by 6 or 4 (LOG_CACHE_LINE_SIZE); we use it for windowing-exp imtigation */ + //bitsize>1434? 7 : + #if (_IPP !=_IPP_M5) + bitsize> 539? 6 : + bitsize> 197? 5 : + #endif + bitsize> 70? 4 : + bitsize> 25? 3 : + bitsize> 9? 2 : 1; +} +#endif + +#endif /* _USE_WINDOW_EXP_ */ |