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

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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: IpTSymScalingMethod.hpp 699 2006-04-05 21:05:18Z andreasw $
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-03-17

#ifndef __IPTSYMSCALINGMETHOD_HPP__
#define __IPTSYMSCALINGMETHOD_HPP__

#include "IpUtils.hpp"
#include "IpAlgStrategy.hpp"

namespace Ipopt
{

  DECLARE_STD_EXCEPTION(ERROR_IN_LINEAR_SCALING_METHOD);

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

    ~TSymScalingMethod()
    {}

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

    virtual bool ComputeSymTScalingFactors(Index n,
                                           Index nnz,
                                           const Index* airn,
                                           const Index* ajcn,
                                           const double* a,
                                           double* scaling_factors) = 0;
  private:
    TSymScalingMethod(const TSymScalingMethod&);

    void operator=(const TSymScalingMethod&);
  };

} // namespace Ipopt

#endif

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