/home/coin/SVN-release/CoinAll-1.1.0/Ipopt/src/Algorithm/LinearSolvers/IpMumpsSolverInterface.hpp

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// Copyright (C) 2006, 2007 Damien Hocking, KBC Advanced Technologies
// All Rights Reserved.
// This code is published under the Common Public License.
//
// Authors: Damien Hocking                 KBC    2006-03-20
//        (included his original contribution into Ipopt package on 2006-03-25)
//          Andreas Waechter               IBM    2006-03-25
//           (minor changes and corrections)
//          Scott Turnberg                 CMU    2006-05-12
//           (major revision)
//           (incorporated by AW on 2006-11-11 into Ipopt package)


#ifndef __IPMUMPSSOLVERINTERFACE_HPP__
#define __IPMUMPSSOLVERINTERFACE_HPP__

#include "IpSparseSymLinearSolverInterface.hpp"

namespace Ipopt
{

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

    virtual ~MumpsSolverInterface();

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

    virtual ESymSolverStatus InitializeStructure(Index dim, Index nonzeros,
        const Index *airn,
        const Index *ajcn);

    virtual double* GetValuesArrayPtr();

    virtual ESymSolverStatus MultiSolve(bool new_matrix,
                                        const Index* airn,
                                        const Index* ajcn,
                                        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 true;
    }
    EMatrixFormat MatrixFormat() const
    {
      return Triplet_Format;
    }

    static void RegisterOptions(SmartPtr<RegisteredOptions> roptions);

    virtual bool ProvidesDegeneracyDetection() const;

    virtual ESymSolverStatus DetermineDependentRows(const Index* ia,
        const Index* ja,
        std::list<Index>& c_deps);

  private:
    MumpsSolverInterface(const MumpsSolverInterface&);

    void operator=(const MumpsSolverInterface&);

    void* mumps_ptr_;

    Index negevals_;

    bool initialized_;
    bool pivtol_changed_;
    bool refactorize_;

    Number pivtol_;

    Number pivtolmax_;

    Index mem_percent_;

    Index mumps_permuting_scaling_;

    Index mumps_pivot_order_;

    Index mumps_scaling_;

    Number mumps_dep_tol_;

    bool warm_start_same_structure_;

    bool have_symbolic_factorization_;

    ESymSolverStatus SymbolicFactorization();

    ESymSolverStatus Factorization(bool check_NegEVals,
                                   Index numberOfNegEVals);

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

} // namespace Ipopt
#endif

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