00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software: you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by 00013 the Free Software Foundation, either version 3 of the License, or 00014 (at your option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. 00023 00024 InNamespace 00025 Foam 00026 00027 Description 00028 Optimized hashing functions. 00029 00030 SeeAlso 00031 Hasher.H 00032 00033 \*---------------------------------------------------------------------------*/ 00034 00035 #ifndef HasherInt_H 00036 #define HasherInt_H 00037 00038 #include "Hasher.H" 00039 00040 #include <cstddef> 00041 #include <stdint.h> // C++0x uses <cstdint> 00042 00043 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00044 00045 namespace Foam 00046 { 00047 00048 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00049 00050 //- An optimized version of Hasher 00051 // @param[in] data - an array of uint32_t values 00052 // @param[in] length - the number of values (not bytes) 00053 // @param[in] seed - the previous hash, or an arbitrary value 00054 unsigned HasherInt(const uint32_t* data, size_t length, unsigned seed = 0); 00055 00056 //- An optimized version of Hasher, returning dual hash values 00057 // @param[in] data - an array of uint32_t values 00058 // @param[in] len - the number of values (not bytes) 00059 // @param[in] hash1 - the previous hash, or an arbitrary value 00060 // on output, the primary hash value 00061 // @param[in] hash1 - the previous hash, or an arbitrary value 00062 // on output, the secondary hash value 00063 unsigned HasherDual 00064 ( 00065 const uint32_t* data, 00066 size_t len, 00067 unsigned& hash1, 00068 unsigned& hash2 00069 ); 00070 00071 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00072 00073 } // End namespace Foam 00074 00075 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00076 00077 #endif 00078 00079 // ************************ vim: set sw=4 sts=4 et: ************************ //
