lapackwrap.h

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/libraries/libmbwrap/lapackwrap.h,v 1.19 2017/01/12 14:44:25 masarati Exp $ */
/* 
 * HmFe (C) is a FEM analysis code. 
 *
 * Copyright (C) 1996-2017
 *
 * Marco Morandini  <morandini@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 * This program 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.
 *
 */
/* December 2001 
 * Modified to add a  matrix in row form and to implement methods
 * to be used in the parallel MBDyn Solver.
 *
 * Copyright (C) 2001-2017
 *
 * Giuseppe Quaranta  <quaranta@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *      
 */
/* 
 * MBDyn (C) is a multibody analysis code. 
 * http://www.mbdyn.org
 *
 * Copyright (C) 1996-2017
 *
 * Pierangelo Masarati  <masarati@aero.polimi.it>
 * Paolo Mantegazza     <mantegazza@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 *
 * This program 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 (version 2 of the License).
 * 
 *
 * This program 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 program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 * Lapack is used by permission; please read its Copyright,
 * License and Availability note.
 */

#ifndef LapackSolutionManager_hh
#define LapackSolutionManager_hh

#ifdef USE_LAPACK

#include <iostream>
#include <vector>

#include "myassert.h"
#include "mynewmem.h"
#include "ls.h"
#include "solman.h"
#include "fullmh.h"

        
/* LapackSolver - begin */

class LapackSolver: public LinearSolver {
private:
        integer iSize;
        doublereal *pA;
        doublereal *pB;
        integer *piIPIV;

        void Factor(void);

public:
        LapackSolver(const integer &size, const doublereal &dPivot,
                        doublereal *pa, doublereal *pb);
        ~LapackSolver(void);

        void Reset(void);
        void Solve(void) const;
};

/* LapackSolver - end */

/* LapackSolutionManager - begin */

class LapackSolutionManager: public SolutionManager {
protected:
        mutable FullMatrixHandler A;

        mutable MyVectorHandler VH;

        /* Backward Substitution */
        void BackSub(doublereal t_iniz = 0.);
   
public:
        LapackSolutionManager(integer Dim, doublereal dPivot = -1.);
        virtual ~LapackSolutionManager(void);
#ifdef DEBUG
        virtual void IsValid(void) const {
                NO_OP;
        };
#endif /* DEBUG */

        /* Inizializzatore generico */
        virtual void MatrReset(void);
        
        /* Risolve il sistema Backward Substitution; fattorizza se necessario */
        virtual void Solve(void);

        /* Rende disponibile l'handler per la matrice */
        virtual MatrixHandler* pMatHdl(void) const;

        /* Rende disponibile l'handler per il termine noto */
        virtual MyVectorHandler* pResHdl(void) const;

        /* Rende disponibile l'handler per la soluzione */
        virtual MyVectorHandler* pSolHdl(void) const;
};

/* LapackSolutionManager - end */

#endif /* USE_LAPACK */

#endif /* LapackSolutionManager_hh */