LinearSolverInterface.hpp

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/*
  Copyright 2012 SINTEF ICT, Applied Mathematics.

  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_LINEARSOLVERINTERFACE_HEADER_INCLUDED
#define OPM_LINEARSOLVERINTERFACE_HEADER_INCLUDED

#include<boost/any.hpp>

struct CSRMatrix;

namespace Opm
{


    class LinearSolverInterface
    {
    public:
        virtual ~LinearSolverInterface();

        struct LinearSolverReport
        {
            bool converged;
            int iterations;
            double residual_reduction;
        };

        LinearSolverReport solve(const CSRMatrix* A,
                                 const double* rhs,
                                 double* solution) const;

        virtual LinearSolverReport solve(const int size,
                                         const int nonzeros,
                                         const int* ia,
                                         const int* ja,
                                         const double* sa,
                                         const double* rhs,
                                         double* solution,
                                         const boost::any& add=boost::any()) const = 0;

        virtual void setTolerance(const double tol) = 0;

        virtual double getTolerance() const = 0;

    };


} // namespace Opm



#endif // OPM_LINEARSOLVERINTERFACE_HEADER_INCLUDED