IpIterativeWsmpSolverInterface.hpp

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// Copyright (C) 2009 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// $Id: IpIterativeWsmpSolverInterface.hpp 1861 2010-12-21 21:34:47Z andreasw $
//
// Authors:  Andreas Waechter              IBM    2009-09-18
//               based on IpWsmpSolverInterface.hpp (rev 1483)


#ifndef __IPITERATIVEWSMPSOLVERINTERFACE_HPP__
#define __IPITERATIVEWSMPSOLVERINTERFACE_HPP__

#include "IpSparseSymLinearSolverInterface.hpp"

namespace Ipopt
{

  class IterativeWsmpSolverInterface: public SparseSymLinearSolverInterface
  {
  public:
    IterativeWsmpSolverInterface();

    virtual ~IterativeWsmpSolverInterface();

    bool InitializeImpl(const OptionsList& options,
                        const std::string& prefix);


    virtual ESymSolverStatus InitializeStructure(Index dim, Index nonzeros,
        const Index *ia,
        const Index *ja);

    virtual double* GetValuesArrayPtr();

    virtual ESymSolverStatus MultiSolve(bool new_matrix,
                                        const Index* ia,
                                        const Index* ja,
                                        Index nrhs,
                                        double* rhs_vals,
                                        bool check_NegEVals,
                                        Index numberOfNegEVals);

    virtual Index NumberOfNegEVals() const;

    //* @name Options of Linear solver */

    virtual bool IncreaseQuality();

    virtual bool ProvidesInertia() const
    {
      return false;
    }
    EMatrixFormat MatrixFormat() const
    {
      return CSR_Format_1_Offset;
    }

    static void RegisterOptions(SmartPtr<RegisteredOptions> roptions);

  private:
    IterativeWsmpSolverInterface(const IterativeWsmpSolverInterface&);

    void operator=(const IterativeWsmpSolverInterface&);

    Index dim_;

    double* a_;

    Index wsmp_num_threads_;
    Number wsmp_pivtol_;
    Number wsmp_pivtolmax_;
    Index wsmp_scaling_;
    Index wsmp_write_matrix_iteration_;
    Number wsmp_inexact_droptol_;
    Number wsmp_inexact_fillin_limit_;

    Index matrix_file_number_;

#if 0

    Index negevals_;
#endif


    bool initialized_;
    bool pivtol_changed_;
    bool have_symbolic_factorization_;

    ipfint* IPARM_;
    double* DPARM_;

    ESymSolverStatus SymbolicFactorization(const Index* ia, const Index* ja);

    ESymSolverStatus InternalSymFact(const Index* ia, const Index* ja);

    ESymSolverStatus Factorization(const Index* ia,
                                   const Index* ja,
                                   bool check_NegEVals,
                                   Index numberOfNegEVals);

    ESymSolverStatus Solve(const Index* ia,
                           const Index* ja,
                           Index nrhs,
                           double *rhs_vals);
  };

} // namespace Ipopt
#endif