FourthOrderTensor.hpp

00001 /*
00002 
00003 Copyright (C) University of Oxford, 2005-2009
00004 
00005 University of Oxford means the Chancellor, Masters and Scholars of the
00006 University of Oxford, having an administrative office at Wellington
00007 Square, Oxford OX1 2JD, UK.
00008 
00009 This file is part of Chaste.
00010 
00011 Chaste is free software: you can redistribute it and/or modify it
00012 under the terms of the GNU Lesser General Public License as published
00013 by the Free Software Foundation, either version 2.1 of the License, or
00014 (at your option) any later version.
00015 
00016 Chaste 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 Lesser General Public
00019 License for more details. The offer of Chaste under the terms of the
00020 License is subject to the License being interpreted in accordance with
00021 English Law and subject to any action against the University of Oxford
00022 being under the jurisdiction of the English Courts.
00023 
00024 You should have received a copy of the GNU Lesser General Public License
00025 along with Chaste. If not, see <http://www.gnu.org/licenses/>.
00026 
00027 */
00028 
00029 
00030 #ifndef _FOURTHORDERTENSOR_HPP_
00031 #define _FOURTHORDERTENSOR_HPP_
00032 
00033 #include <cassert>
00034 #include <vector>
00035 
00036 #include <boost/numeric/ublas/vector.hpp>
00037 #include <boost/numeric/ublas/matrix.hpp>
00038 using namespace boost::numeric::ublas;
00039 #include "Exception.hpp"
00040 
00041 
00048 template<unsigned DIM>
00049 class FourthOrderTensor
00050 {
00051 private:
00052 
00053     std::vector<double> mData;  
00054     unsigned mDimSqd;           
00055     unsigned mDimCubed;         
00056     unsigned mDimToFour;        
00058 public:
00059 
00063     FourthOrderTensor();
00064 
00077     void SetAsProduct(FourthOrderTensor<DIM>& rTensor, const c_matrix<double,DIM,DIM>& rMatrix, unsigned component);
00078 
00087     double& operator()(unsigned M, unsigned N, unsigned P, unsigned Q);
00088 
00092     void Zero();
00093 
00094 };
00095 
00096 #endif //_FOURTHORDERTENSOR_HPP_

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