mfree.cc

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/mbdyn/base/mfree.cc,v 1.34 2017/01/12 14:46:09 masarati Exp $ */
/* 
 * 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
 */
 
 /* 
  *
  * Copyright (C) 2003-2017
  * Giuseppe Quaranta   <quaranta@aero.polimi.it>
  *
  * classi che implementano la risoluzione del sistema nonlineare 
  */
  
#include "mbconfig.h"           /* This goes first in every *.c,*.cc file */

#include "precond_.h"
#include "mfree.h"

const doublereal defaultGamma = 0.9;

MatrixFreeSolver::MatrixFreeSolver(
                const Preconditioner::PrecondType PType, 
                const integer iPStep,
                doublereal ITol,
                integer MaxIt,
                doublereal etaMx,
                doublereal T,
                const NonlinearSolverOptions& options)
: NonlinearSolver(options),
pPM(NULL),
pRes(NULL),
IterTol(ITol),
MaxLinIt(MaxIt),
Tau(T),
gamma(defaultGamma),
etaMax(etaMx),
PrecondIter(iPStep),
bBuildMat(true),
pPrevNLP(NULL)
{
        
        switch(PType) {
        case Preconditioner::FULLJACOBIANMATRIX:
                SAFENEW(pPM, FullJacobianPr);
                break;
        
        default:
                silent_cerr("Unknown Preconditioner type; aborting"
                        << std::endl);
                throw ErrGeneric(MBDYN_EXCEPT_ARGS); 
        }
}

MatrixFreeSolver::~MatrixFreeSolver(void)
{
        if (pPM) {
                SAFEDELETE(pPM);
                pPM = 0;
        }
}