MoochoPack_CheckConvergenceStd_AddedStep.cpp

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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
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//  
// This library is distributed in the hope that it will be useful, but
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// 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
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// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
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//#include <assert.h>

#include <ostream>

#include "MoochoPack_CheckConvergenceStd_AddedStep.hpp"
#include "MoochoPack_NLPAlgoContainer.hpp"
#include "MoochoPack_moocho_algo_conversion.hpp"
#include "IterationPack_print_algorithm_step.hpp"

namespace MoochoPack {

CheckConvergenceStd_AddedStep::CheckConvergenceStd_AddedStep(
  Teuchos::RCP<CheckConvergence_Strategy> convergence_strategy
  )
  :
  convergence_strategy_(convergence_strategy)
  {}

bool CheckConvergenceStd_AddedStep::do_step(
  Algorithm& _algo, poss_type step_poss, IterationPack::EDoStepType type
  ,poss_type assoc_step_poss
  )
  {
  
    TEST_FOR_EXCEPTION(!convergence_strategy_.get(),
          std::logic_error,
          "Don't have a valid convergence_strategy in CheckConvergenceStd_AddedStep\n"
    );

  NLPAlgo &algo   = rsqp_algo(_algo);

  EJournalOutputLevel olevel = algo.algo_cntr().journal_output_level();
  std::ostream& out = algo.track().journal_out();

  // print step header.
  if( static_cast<int>(olevel) >= static_cast<int>(PRINT_ALGORITHM_STEPS) ) {
    using IterationPack::print_algorithm_step;
    print_algorithm_step( algo, step_poss, type, assoc_step_poss, out );
  }

  const bool found_solution = convergence_strategy_->Converged(_algo);

  if( found_solution )
  {
    if( static_cast<int>(olevel) > static_cast<int>(PRINT_NOTHING) )
      out << "\nJackpot!  Found the solution!!!!!! (k = " << algo.state().k() << ")\n";
    algo.terminate(true); // found min
    return false; // skip the other steps and terminate
  }
  
  if( static_cast<int>(olevel) > static_cast<int>(PRINT_NOTHING) )
    out << "\nHave not found the solution yet, have to keep going (k = " << algo.state().k() << ") :-(\n";
  
  // We are not at the solution so keep going
  return true;
  }

void CheckConvergenceStd_AddedStep::print_step( const Algorithm& algo
  , poss_type step_poss, IterationPack::EDoStepType type, poss_type assoc_step_poss
  , std::ostream& out, const std::string& L ) const
  {

    TEST_FOR_EXCEPTION(!convergence_strategy_.get(),
          std::logic_error,
          "Don't have a valid convergence_strategy in CheckConvergenceStd_AddedStep\n"
    );
  
  convergence_strategy_->print_step(algo, out, L);
  }

} // end namespace MoochoPack