/usr/include/sofa/component/linearsolver/SparseLDLSolver.h is in libsofa1-dev 1.0~beta4-10ubuntu2.
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* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
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* 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 Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Modules *
* *
* Authors: The SOFA Team and external contributors (see Authors.txt) *
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* Contact information: contact@sofa-framework.org *
******************************************************************************/
#ifndef SOFA_COMPONENT_LINEARSOLVER_SparseLDLSolver_H
#define SOFA_COMPONENT_LINEARSOLVER_SparseLDLSolver_H
#include <sofa/core/componentmodel/behavior/LinearSolver.h>
#include <sofa/component/linearsolver/MatrixLinearSolver.h>
#include <sofa/simulation/common/MechanicalVisitor.h>
#include <sofa/component/linearsolver/SparseMatrix.h>
#include <sofa/component/linearsolver/FullMatrix.h>
#include <sofa/helper/map.h>
#include <math.h>
#include <ldl.h>
namespace sofa {
namespace component {
namespace linearsolver {
/// Linear system solver using the conjugate gradient iterative algorithm
template<class TMatrix, class TVector>
class SparseLDLSolver : public sofa::component::linearsolver::MatrixLinearSolver<TMatrix,TVector>, public virtual sofa::core::objectmodel::BaseObject {
public:
typedef TMatrix Matrix;
typedef TVector Vector;
typedef sofa::component::linearsolver::MatrixLinearSolver<TMatrix,TVector> Inherit;
typedef sofa::core::componentmodel::behavior::BaseMechanicalState::VecId VecId;
Data<bool> f_verbose;
Data<std::map < std::string, sofa::helper::vector<double> > > f_graph;
Data<double> f_tol;
SparseLDLSolver();
~SparseLDLSolver();
void solve (Matrix& M, Vector& x, Vector& b);
void invert(Matrix& M);
bool readFile(std::istream& in);
bool writeFile(std::ostream& out);
private :
int n;
helper::vector<double> A_x,Lx,D,Y;
helper::vector<int> A_i,A_p, Li,Lp,Parent,Lnz,Flag,Pattern;
};
} // namespace linearsolver
} // namespace component
} // namespace sofa
#endif
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