MoochoPack_CalcDFromYPYZPZ_Step.cpp

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00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00005 //                  Copyright (2003) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #include <limits>
00030 #include <ostream>
00031 
00032 #include "MoochoPack_CalcDFromYPYZPZ_Step.hpp"
00033 #include "MoochoPack_moocho_algo_conversion.hpp"
00034 #include "IterationPack_print_algorithm_step.hpp"
00035 //#include "ConstrainedOptPack_print_vector_change_stats.hpp"
00036 #include "AbstractLinAlgPack_MatrixOpOut.hpp"
00037 #include "AbstractLinAlgPack_VectorMutable.hpp"
00038 #include "AbstractLinAlgPack_VectorStdOps.hpp"
00039 #include "AbstractLinAlgPack_VectorOut.hpp"
00040 #include "AbstractLinAlgPack_LinAlgOpPack.hpp"
00041 
00042 namespace LinAlgOpPack {
00043   using AbstractLinAlgPack::Vp_StMtV;
00044 }
00045 
00046 bool MoochoPack::CalcDFromYPYZPZ_Step::do_step(Algorithm& _algo
00047   , poss_type step_poss, IterationPack::EDoStepType type, poss_type assoc_step_poss)
00048 {
00049   using AbstractLinAlgPack::dot;
00050   using LinAlgOpPack::V_VpV;
00051 
00052   NLPAlgo &algo = rsqp_algo(_algo);
00053   NLPAlgoState  &s    = algo.rsqp_state();
00054 
00055   EJournalOutputLevel olevel = algo.algo_cntr().journal_output_level();
00056   std::ostream& out = algo.track().journal_out();
00057 
00058   // print step header.
00059   if( static_cast<int>(olevel) >= static_cast<int>(PRINT_ALGORITHM_STEPS) ) {
00060     using IterationPack::print_algorithm_step;
00061     print_algorithm_step( algo, step_poss, type, assoc_step_poss, out );
00062   }
00063 
00064   // d = Ypy + Zpz
00065   VectorMutable    &d_k    = s.d().set_k(0);
00066   const Vector     &Ypy_k = s.Ypy().get_k(0);
00067   const Vector     &Zpz_k = s.Zpz().get_k(0);
00068   V_VpV( &d_k, Ypy_k, Zpz_k );
00069 
00070   if( (int)olevel >= (int)PRINT_ALGORITHM_STEPS ) {
00071     const value_type very_small = std::numeric_limits<value_type>::min();
00072     out
00073       << "\n(Ypy_k'*Zpz_k)/(||Ypy_k||2 * ||Zpz_k||2 + eps)\n"
00074       << "  = ("<<dot(Ypy_k,Zpz_k)<<")/("<<Ypy_k.norm_2()<<" * "<<Zpz_k.norm_2()<<" + "<<very_small<<")\n"
00075       << "  = " << dot(Ypy_k,Zpz_k) / ( Ypy_k.norm_2() * Zpz_k.norm_2() + very_small ) << "\n";
00076     out << "\n||d||inf = " << d_k.norm_inf() << std::endl;
00077 /*
00078   ConstrainedOptPack::print_vector_change_stats(
00079   s.x().get_k(0), "x", s.d().get_k(0), "d", out );
00080 */
00081     // ToDo: Replace the above with a reduction operator!
00082   }
00083 
00084   if( static_cast<int>(olevel) >= static_cast<int>(PRINT_VECTORS) ) {
00085     out << "\nd_k = \n" << d_k;
00086   }
00087 
00088   return true;
00089 }
00090 
00091 void MoochoPack::CalcDFromYPYZPZ_Step::print_step( const Algorithm& algo
00092   , poss_type step_poss, IterationPack::EDoStepType type, poss_type assoc_step_poss
00093   , std::ostream& out, const std::string& L ) const
00094 {
00095   out
00096     << L << "*** Calculates the search direction d from Ypy and Zpz\n"
00097     << L << "d_k = Ypy_k + Zpz_k \n";
00098 }

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