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// Copyright (C) 2004, 2006 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Common Public License.
//
// $Id: IpPDSystemSolver.hpp 735 2006-06-04 06:10:05Z andreasw $
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13

#ifndef __IPPDSYSTEMSOLVER_HPP__
#define __IPPDSYSTEMSOLVER_HPP__

#include "IpUtils.hpp"
#include "IpSymMatrix.hpp"
#include "IpAlgStrategy.hpp"
#include "IpIteratesVector.hpp"

namespace Ipopt
{

  class PDSystemSolver: public AlgorithmStrategyObject
  {
  public:
    PDSystemSolver()
    {}

    virtual ~PDSystemSolver()
    {}

    virtual bool InitializeImpl(const OptionsList& options,
                                const std::string& prefix) = 0;

    virtual bool Solve(Number alpha,
                       Number beta,
                       const IteratesVector& rhs,
                       IteratesVector& res,
                       bool allow_inexact=false,
                       bool improve_solution=false) =0;

  private:
    PDSystemSolver& operator=(const PDSystemSolver&);
  };


} // namespace Ipopt

#endif

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