epot_bicgstabsolver.hpp

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/* Copyright (c) 2005-2013 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
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 * permission to assert copyright is obtained from the U.S. Department
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#ifndef EPOT_BICGSTABSOLVER_HPP
#define EPOT_BICGSTABSOLVER_HPP 1


#include "epot_matrixsolver.hpp"
#include "precond.hpp"


class EpotBiCGSTABSolver : public EpotMatrixSolver {

    double    _eps;             
    uint32_t  _imax;            
    uint32_t  _iter;            
    double    _res;             
    double    _err;             
    double    _newton_res;      
    double    _newton_res_norm; 
    double    _newton_step;     
    double    _newton_step_norm;
    bool      _gnewton;         
    double    _newton_eps;      
    uint32_t  _newton_imax;     
    Precond  *_pc;              
    MeshScalarField *_epot;     
    void    (*_callback)(void); 
    void    (*_callback_nonlinear)(void); 
    virtual void reset_problem( void );

    virtual void subsolve( MeshScalarField &epot, const MeshScalarField &scharge );

    void bicgstab( const Matrix &mat, const Vector &rhs, Vector &sol,
                   const Precond &pc );

public:

    EpotBiCGSTABSolver( Geometry &geom,
                        double eps = 1.0e-4, 
                        uint32_t imax = 10000,
                        double newton_eps = 1.0e-4, 
                        uint32_t newton_imax = 10,
                        bool gnewton = true );

    EpotBiCGSTABSolver( Geometry &geom, std::istream &s );

    virtual ~EpotBiCGSTABSolver();

    void set_preconditioner( Precond &pc );

    void set_gnewton( bool enable );

    void set_eps( double eps );

    void set_imax( uint32_t imax );

    void set_newton_imax( uint32_t newton_imax );

    void set_newton_eps( double eps );

    double get_newton_residual( void ) const;

    double get_newton_residual_norm( void ) const;

    double get_newton_step( void ) const;

    double get_newton_step_norm( void ) const;

    double get_scaled_residual( void ) const;

    double get_error_estimate( void ) const;

    uint32_t get_iter( void ) const;

    void set_analysis_callback( void (*func)(void) );
    
    void set_analysis_callback_nonlinear( void (*func)(void) );
    
    virtual void debug_print( std::ostream &os ) const;

    virtual void save( std::ostream &s ) const;
};


#endif