IpMonotoneMuUpdate.hpp

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// Copyright (C) 2004, 2010 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13
 
#ifndef __IPMONOTONEMUUPDATE_HPP__
#define __IPMONOTONEMUUPDATE_HPP__
 
#include "IpMuUpdate.hpp"
#include "IpLineSearch.hpp"
#include "IpRegOptions.hpp"
 
namespace Ipopt
{
 
class MonotoneMuUpdate: public MuUpdate
{
public:
 
   MonotoneMuUpdate(
      const SmartPtr<LineSearch>& linesearch
   );
 
   virtual ~MonotoneMuUpdate();
 
   virtual bool InitializeImpl(
      const OptionsList& options,
      const std::string& prefix
   );
 
   virtual bool UpdateBarrierParameter();
 
   static void RegisterOptions(
      const SmartPtr<RegisteredOptions>& roptions
   );
 
private:
   MonotoneMuUpdate();
 
   MonotoneMuUpdate(
      const MonotoneMuUpdate&
   );
 
   void operator=(
      const MonotoneMuUpdate&);
 
   void CalcNewMuAndTau(
      Number& new_mu,
      Number& new_tau
   );
 
 
   Number mu_init_;
   Number barrier_tol_factor_;
   Number mu_linear_decrease_factor_;
   Number mu_superlinear_decrease_power_;
   bool mu_allow_fast_monotone_decrease_;
   Number tau_min_;
   Number compl_inf_tol_;
   Number mu_target_;
 
   SmartPtr<LineSearch> linesearch_;
 
   bool initialized_;
 
   bool first_iter_resto_;
};
 
} // namespace Ipopt
 
#endif