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# /home/coin/SVN-release/Ipopt-3.5.1/Ipopt/src/Algorithm/LinearSolvers/IpSymLinearSolver.hpp

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    00001 // Copyright (C) 2004, 2006 International Business Machines and others.
    00002 // All Rights Reserved.
    00003 // This code is published under the Common Public License.
    00004 //
    00005 // $Id: IpSymLinearSolver.hpp 699 2006-04-05 21:05:18Z andreasw $
    00006 //
    00007 // Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13
    00008
    00009 #ifndef __IPSYMLINEARSOLVER_HPP__
    00010 #define __IPSYMLINEARSOLVER_HPP__
    00011
    00012 #include "IpUtils.hpp"
    00013 #include "IpSymMatrix.hpp"
    00014 #include "IpAlgStrategy.hpp"
    00015 #include <vector>
    00016
    00017 namespace Ipopt
    00018 {
    00019
    00021   enum ESymSolverStatus {
    00023     SYMSOLVER_SUCCESS,
    00025     SYMSOLVER_SINGULAR,
    00027     SYMSOLVER_WRONG_INERTIA,
    00030     SYMSOLVER_CALL_AGAIN,
    00033     SYMSOLVER_FATAL_ERROR
    00034   };
    00035
    00050   class SymLinearSolver: public AlgorithmStrategyObject
    00051   {
    00052   public:
    00055     SymLinearSolver()
    00056     {}
    00057
    00058     virtual ~SymLinearSolver()
    00059     {}
    00061
    00063     virtual bool InitializeImpl(const OptionsList& options,
    00064                                 const std::string& prefix) = 0;
    00065
    00080     virtual ESymSolverStatus MultiSolve(const SymMatrix &A,
    00081                                         std::vector<SmartPtr<const Vector> >& rhsV,
    00082                                         std::vector<SmartPtr<Vector> >& solV,
    00083                                         bool check_NegEVals,
    00084                                         Index numberOfNegEVals)=0;
    00085
    00089     ESymSolverStatus Solve(const SymMatrix &A,
    00090                            const Vector& rhs, Vector& sol,
    00091                            bool check_NegEVals,
    00092                            Index numberOfNegEVals)
    00093     {
    00094       std::vector<SmartPtr<const Vector> > rhsV(1);
    00095       rhsV[0] = &rhs;
    00096       std::vector<SmartPtr<Vector> > solV(1);
    00097       solV[0] = &sol;
    00098       return MultiSolve(A, rhsV, solV, check_NegEVals,
    00099                         numberOfNegEVals);
    00100     }
    00101
    00108     virtual Index NumberOfNegEVals() const =0;
    00110
    00111     //* @name Options of Linear solver */
    00113
    00118     virtual bool IncreaseQuality() =0;
    00119
    00123     virtual bool ProvidesInertia() const =0;
    00125   };
    00126
    00127
    00128 } // namespace Ipopt
    00129
    00130 #endif