MoochoPack_InitFinDiffReducedHessian_StepSetOptions.cpp

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 <assert.h>
00030 #include <math.h>
00031 
00032 #include "MoochoPack_InitFinDiffReducedHessian_StepSetOptions.hpp"
00033 #include "OptionsFromStreamPack_StringToBool.hpp"
00034 
00035 // Define the options
00036 namespace {
00037 
00038   const int local_num_options = 4;
00039 
00040   enum local_EOptions {
00041     INITIALIZATION_METHOD,
00042     MAX_COND,
00043     MIN_DIAG,
00044     STEP_SCALE
00045   };
00046 
00047   const char* local_SOptions[local_num_options] = {
00048     "initialization_method",
00049     "max_cond",
00050     "min_diag",
00051     "step_scale"
00052   };
00053 
00054 }
00055 
00056 namespace MoochoPack {
00057 
00058 InitFinDiffReducedHessian_StepSetOptions::InitFinDiffReducedHessian_StepSetOptions(
00059         InitFinDiffReducedHessian_Step* target
00060       , const char opt_grp_name[] )
00061   : OptionsFromStreamPack::SetOptionsFromStreamNode(
00062         opt_grp_name, local_num_options, local_SOptions )
00063     , OptionsFromStreamPack::SetOptionsToTargetBase<
00064       InitFinDiffReducedHessian_Step >( target )
00065 {}
00066 
00067 void InitFinDiffReducedHessian_StepSetOptions::setOption(
00068   int option_num, const std::string& option_value )
00069 {
00070   typedef InitFinDiffReducedHessian_Step target_t;
00071   switch( (local_EOptions)option_num ) {
00072       case INITIALIZATION_METHOD:
00073     {
00074       const std::string &option = option_value.c_str();
00075       if( option == "SCALE_IDENTITY" )
00076         target().initialization_method( target_t::SCALE_IDENTITY );
00077       else if( option == "SCALE_DIAGONAL" )
00078         target().initialization_method( target_t::SCALE_DIAGONAL );
00079       else if( option == "SCALE_DIAGONAL_ABS" )
00080         target().initialization_method( target_t::SCALE_DIAGONAL_ABS );
00081       else
00082         throw std::invalid_argument( "Error, incorrect value for "
00083           "\"initialization_method\"." );
00084       break;
00085     }
00086       case MAX_COND:
00087       target().max_cond(std::fabs(std::atof(option_value.c_str())));
00088       break;
00089     case MIN_DIAG:
00090       target().min_diag(std::abs(std::atoi(option_value.c_str())));
00091       break;
00092     case STEP_SCALE:
00093       target().step_scale(std::fabs(std::atof(option_value.c_str())));
00094       break;
00095     default:
00096       TEST_FOR_EXCEPT(true);  // Local error only?
00097   }
00098 }
00099 
00100 } // end namespace MoochoPack 

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