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// ***********************************************************************
//
// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
// Copyright (2003) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov)
//
// ***********************************************************************
// @HEADER
#ifndef QP_FAILURE_REINIT_REDUCED_HESSIAN_STEP_H
#define QP_FAILURE_REINIT_REDUCED_HESSIAN_STEP_H
#include "MoochoPack_Types.hpp"
#include "IterationPack_AlgorithmStep.hpp"
#include "Teuchos_StandardCompositionMacros.hpp"
namespace MoochoPack {
/** \brief Directs the algorithm to reinitalize the reduced Hessian on the event
* of a QP failure.
*
* If the delegated Step object throws a \c QPFailure exception
* then this Step object wipes out all reduced Hessian info rHL
* for the current and previous iterations and then directs the algorithm
* back to the ReducedHessian step (see the printed step description).
*/
class QPFailureReinitReducedHessian_Step
: public IterationPack::AlgorithmStep // doxygen needs full path
{
public:
/** \brief . */
STANDARD_COMPOSITION_MEMBERS( IterationPack::AlgorithmStep, null_space_step );
/** \brief . */
QPFailureReinitReducedHessian_Step( const null_space_step_ptr_t& null_space_step );
// ////////////////////
// Overridden
/** \brief . */
bool do_step(Algorithm& algo, poss_type step_poss, IterationPack::EDoStepType type
, poss_type assoc_step_poss);
/** \brief . */
void print_step( const Algorithm& algo, poss_type step_poss, IterationPack::EDoStepType type
, poss_type assoc_step_poss, std::ostream& out, const std::string& leading_str ) const;
private:
int last_qp_failure_k_;
// not defined and not to be called
QPFailureReinitReducedHessian_Step();
QPFailureReinitReducedHessian_Step(const QPFailureReinitReducedHessian_Step&);
QPFailureReinitReducedHessian_Step& operator=(const QPFailureReinitReducedHessian_Step&);
}; // end class QPFailureReinitReducedHessian_Step
} // end namespace MoochoPack
#endif // QP_FAILURE_REINIT_REDUCED_HESSIAN_STEP_H
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