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IpRestoMinC_1Nrm.hpp
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00001 // Copyright (C) 2004, 2010 International Business Machines and others.
00002 // All Rights Reserved.
00003 // This code is published under the Eclipse Public License.
00004 //
00005 // $Id$
00006 //
00007 // Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13
00008 
00009 #ifndef __IPRESTOC_1NRM_HPP__
00010 #define __IPRESTOC_1NRM_HPP__
00011 
00012 #include "IpRestoPhase.hpp"
00013 #include "IpIpoptAlg.hpp"
00014 #include "IpEqMultCalculator.hpp"
00015 
00016 namespace Ipopt
00017 {
00018 
00022   class MinC_1NrmRestorationPhase : public RestorationPhase
00023   {
00024   public:
00033     MinC_1NrmRestorationPhase(IpoptAlgorithm& resto_alg,
00034                               const SmartPtr<EqMultiplierCalculator>& eq_mult_calculator);
00035 
00037     virtual ~MinC_1NrmRestorationPhase();
00039 
00041     virtual bool InitializeImpl(const OptionsList& options,
00042                                 const std::string& prefix);
00043 
00046     static void RegisterOptions(SmartPtr<RegisteredOptions> roptions);
00048 
00049   protected:
00051     virtual bool PerformRestoration();
00052 
00053   private:
00061     MinC_1NrmRestorationPhase();
00062 
00064     MinC_1NrmRestorationPhase(const MinC_1NrmRestorationPhase&);
00065 
00067     void operator=(const MinC_1NrmRestorationPhase&);
00069 
00072     SmartPtr<IpoptAlgorithm> resto_alg_;
00073     SmartPtr<EqMultiplierCalculator> eq_mult_calculator_;
00075 
00079     SmartPtr<OptionsList> resto_options_;
00080 
00083     Number constr_mult_reset_threshold_;
00087     Number bound_mult_reset_threshold_;
00091     bool expect_infeasible_problem_;
00093     Number constr_viol_tol_;
00097     Number resto_failure_feasibility_threshold_;
00099 
00102     Index count_restorations_;
00103 
00109     void ComputeBoundMultiplierStep(Vector& delta_z,
00110                                     const Vector& curr_z,
00111                                     const Vector& curr_slack,
00112                                     const Vector& trial_slack);
00114   };
00115 
00116 } // namespace Ipopt
00117 
00118 #endif
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