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00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2005 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 the 00013 Free Software Foundation; either version 2 of the License, or (at your 00014 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, write to the Free Software Foundation, 00023 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00024 00025 Class 00026 Hash 00027 00028 Description 00029 Hash function class for primitives. All non-primitives used to hash 00030 entries on hash tables need a specialised version of this class. 00031 00032 \*---------------------------------------------------------------------------*/ 00033 00034 #ifndef Hash_H 00035 #define Hash_H 00036 00037 #include "label.H" 00038 00039 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00040 00041 namespace Foam 00042 { 00043 00044 /*---------------------------------------------------------------------------*\ 00045 Class Hash Declaration 00046 \*---------------------------------------------------------------------------*/ 00047 00048 template<class primitive> 00049 class Hash 00050 { 00051 00052 public: 00053 00054 Hash() 00055 {} 00056 00057 label operator()(const primitive& p) const 00058 { 00059 return label(p); 00060 } 00061 00062 label operator()(const primitive& p, const label tableSize) const 00063 { 00064 return mag(operator()(p)) % tableSize; 00065 } 00066 }; 00067 00068 00069 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00070 00071 } // End namespace Foam 00072 00073 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00074 00075 #endif 00076 00077 // ************************************************************************* //