BlockedMatrix.hpp

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/*
  Copyright 2019 Equinor ASA
 
  This file is part of the Open Porous Media project (OPM).
 
  OPM is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  OPM is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef OPM_BLOCKED_MATRIX_HPP
#define OPM_BLOCKED_MATRIX_HPP
 
namespace Opm
{
namespace Accelerator
{
 
class BlockedMatrix
{
 
public:
 
    BlockedMatrix(int Nb_, int nnzbs_, unsigned int block_size_)
    : nnzValues(new double[nnzbs_*block_size_*block_size_]),
      colIndices(new int[nnzbs_*block_size_*block_size_]),
      rowPointers(new int[Nb_+1]),
      Nb(Nb_),
      nnzbs(nnzbs_),
      block_size(block_size_),
      deleteNnzs(true),
      deleteSparsity(true)
    {}
 
    BlockedMatrix(const BlockedMatrix& M)
    : nnzValues(new double[M.nnzbs*M.block_size*M.block_size]),
      colIndices(M.colIndices),
      rowPointers(M.rowPointers),
      Nb(M.Nb),
      nnzbs(M.nnzbs),
      block_size(M.block_size),
      deleteNnzs(true),
      deleteSparsity(false)
    {}
 
    BlockedMatrix(int Nb_, int nnzbs_, unsigned int block_size_, double *nnzValues_, int *colIndices_, int *rowPointers_)
    : nnzValues(nnzValues_),
      colIndices(colIndices_),
      rowPointers(rowPointers_),
      Nb(Nb_),
      nnzbs(nnzbs_),
      block_size(block_size_),
      deleteNnzs(false),
      deleteSparsity(false)
    {}
 
    ~BlockedMatrix(){
        if (deleteNnzs) {
            delete[] nnzValues;
        }
        if (deleteSparsity) {
            delete[] colIndices;
            delete[] rowPointers;
        }
    }
 
 
    double *nnzValues;
    int *colIndices;
    int *rowPointers;
    int Nb;
    int nnzbs;
    unsigned int block_size;
    bool deleteNnzs;
    bool deleteSparsity;
};
 
 
void sortRow(int *colIndices, int *data, int left, int right);
 
void blockMultSub(double *a, double *b, double *c, unsigned int block_size);
 
void blockMult(double *mat1, double *mat2, double *resMat, unsigned int block_size);
 
} // namespace Accelerator
} // namespace Opm
 
#endif