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// Copyright (C) 2008 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors: Andreas Waechter IBM 2008-08-31
#ifndef __IPINEXACTNORMALSTEPCALC_HPP__
#define __IPINEXACTNORMALSTEPCALC_HPP__
#include "IpAlgStrategy.hpp"
#include "IpInexactCq.hpp"
namespace Ipopt
{
/** Base class for computing the normal step for the inexact step
* calculation algorithm.
*/
class InexactNormalStepCalculator: public AlgorithmStrategyObject
{
public:
/**@name Constructors/Destructors */
///@{
/** Default Constructor */
InexactNormalStepCalculator()
{ }
/** Destructor */
virtual ~InexactNormalStepCalculator()
{ }
///@}
virtual bool InitializeImpl(
const OptionsList& options,
const std::string& prefix
) = 0;
/** Method for computing the normal step.
*
* The computed step is
* returned as normal_x and normal_s, for the x and s variables,
* respectively. These quantities are not slack-scaled. If the
* step cannot be computed, this method returns false.
*/
virtual bool ComputeNormalStep(
SmartPtr<Vector>& normal_x,
SmartPtr<Vector>& normal_s
) = 0;
protected:
/** Method to easily access Inexact data */
InexactData& InexData()
{
InexactData& inexact_data = static_cast<InexactData&>(IpData().AdditionalData());
DBG_ASSERT(dynamic_cast<InexactData*>(&IpData().AdditionalData()));
return inexact_data;
}
/** 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;
}
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 */
InexactNormalStepCalculator(
const InexactNormalStepCalculator&
);
/** Overloaded Assignment Operator */
void operator=(
const InexactNormalStepCalculator&
);
///@}
};
} // namespace Ipopt
#endif