epot_umfpacksolver.hpp

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/* Copyright (c) 2011-2013 Taneli Kalvas. All rights reserved.
 *
 * You can redistribute this software and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 * 
 * This library 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 this library (file "COPYING" included in the package);
 * if not, write to the Free Software Foundation, Inc., 51 Franklin
 * Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * If you have questions about your rights to use or distribute this
 * software, please contact Berkeley Lab's Technology Transfer
 * Department at TTD@lbl.gov. Other questions, comments and bug
 * reports should be sent directly to the author via email at
 * taneli.kalvas@jyu.fi.
 * 
 * NOTICE. This software was developed under partial funding from the
 * U.S.  Department of Energy.  As such, the U.S. Government has been
 * granted for itself and others acting on its behalf a paid-up,
 * nonexclusive, irrevocable, worldwide license in the Software to
 * reproduce, prepare derivative works, and perform publicly and
 * display publicly.  Beginning five (5) years after the date
 * permission to assert copyright is obtained from the U.S. Department
 * of Energy, and subject to any subsequent five (5) year renewals,
 * the U.S. Government is granted for itself and others acting on its
 * behalf a paid-up, nonexclusive, irrevocable, worldwide license in
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 */
 
 
#ifndef EPOT_UMFPACKSOLVER_HPP
#define EPOT_UMFPACKSOLVER_HPP 1
 
 
#include "epot_matrixsolver.hpp"
#include "ccolmatrix.hpp"
 
 
class EpotUMFPACKSolver : public EpotMatrixSolver {
 
    void     *_numeric;         
    double    _newton_res;      
    double    _newton_step;     
    bool      _gnewton;         
    double    _newton_r_eps;    
    double    _newton_step_eps; 
    uint32_t  _newton_imax;     
    virtual void reset_problem( void );
 
    virtual void subsolve( MeshScalarField &epot, const MeshScalarField &scharge );
 
    static void umfpack_error( const std::string func, int status );
 
    void umfpack_decompose( const CColMatrix &mat );
    void umfpack_solve( const CColMatrix &mat, const Vector &rhs, Vector &sol,
                        bool force_decomposition = false );
 
public:
 
    EpotUMFPACKSolver( Geometry &geom, 
                       double newton_r_eps = 1.0e-5, 
                       double newton_step_eps = 1.0e-6, 
                       uint32_t newton_imax = 10,
                       bool gnewton = true );
 
    EpotUMFPACKSolver( Geometry &geom, std::istream &s );
 
    virtual ~EpotUMFPACKSolver();
 
    void set_newton_imax( uint32_t newton_imax );
 
    void set_gnewton( bool enable );
 
    void set_newton_residual_eps( double newton_r_eps );
 
    double get_newton_residual( void ) const;
 
    void set_newton_step_eps( double newton_step_eps );
 
    double get_newton_step( void ) const;
 
    virtual void debug_print( std::ostream &os ) const;
 
    virtual void save( std::ostream &s ) const;
};
 
 
#endif