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// Copyright (C) 2009 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors: Andreas Waechter, Frank E. Curtis IBM 2009-06-12
// (based on IpMc19TSymScalingMethod.hpp rev 699)
#ifndef __IPINEXACTTSYMSCALINGMETHOD_HPP__
#define __IPINEXACTTSYMSCALINGMETHOD_HPP__
#include "IpUtils.hpp"
#include "IpTSymScalingMethod.hpp"
#include "IpInexactCq.hpp"
namespace Ipopt
{
/** Class for the method for computing scaling factors for symmetric
* matrices in triplet format, specifically for the inexaxct algorithm.
* The scaling is only considering the current slacks.
*/
class InexactTSymScalingMethod: public TSymScalingMethod
{
public:
/** @name Constructor/Destructor */
///@{
InexactTSymScalingMethod()
{ }
virtual ~InexactTSymScalingMethod()
{ }
///@}
virtual bool InitializeImpl(
const OptionsList& options,
const std::string& prefix
);
/** Method for computing the symmetric scaling factors, given the
* symmetric matrix in triplet (MA27) format.
*/
virtual bool ComputeSymTScalingFactors(
Index n,
Index nnz,
const Index* airn,
const Index* ajcn,
const Number* a,
Number* scaling_factors
);
private:
/**@name Default Compiler Generated Methods (Hidden to avoid
* implicit creation/calling).
*
* These methods are not implemented
* and we do not want the compiler to implement them for us, so we
* declare them private and do not define them. This ensures that
* they will not be implicitly created/called.
*/
///@{
/** Copy Constructor */
InexactTSymScalingMethod(
const InexactTSymScalingMethod&
);
/** Overloaded Assignment Operator */
void operator=(
const InexactTSymScalingMethod&
);
/** Method to easily access Inexact calculated quantities */
InexactCq& InexCq()
{
InexactCq& inexact_cq = static_cast<InexactCq&>(IpCq().AdditionalCq());
DBG_ASSERT(dynamic_cast<InexactCq*>(&IpCq().AdditionalCq()));
return inexact_cq;
}
};
} // namespace Ipopt
#endif