MoochoPack : Framework for Large-Scale Optimization Algorithms Version of the Day
MoochoPack_BFGSUpdate_StrategySetOptions.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_BFGSUpdate_StrategySetOptions.hpp"
00033 #include "OptionsFromStreamPack_StringToBool.hpp"
00034 
00035 // Define the options
00036 namespace {
00037 
00038   const int local_num_options = 5;
00039 
00040   enum local_EOptions {
00041     RESCALE_INIT_IDENTITY
00042     ,USE_DAMPENING
00043     ,SECANT_TESTING
00044     ,SECANT_WARNING_TOL
00045     ,SECANT_ERROR_TOL
00046   };
00047 
00048   const char* local_SOptions[local_num_options] = {
00049     "rescale_init_identity"
00050       ,"use_dampening"
00051     ,"secant_testing"
00052     ,"secant_warning_tol"
00053       ,"secant_error_tol"
00054   };
00055 
00056 }
00057 
00058 namespace MoochoPack {
00059 
00060 BFGSUpdate_StrategySetOptions::BFGSUpdate_StrategySetOptions(
00061         BFGSUpdate_Strategy* target
00062       , const char opt_grp_name[] )
00063   : OptionsFromStreamPack::SetOptionsFromStreamNode(
00064         opt_grp_name, local_num_options, local_SOptions )
00065     , OptionsFromStreamPack::SetOptionsToTargetBase<
00066       BFGSUpdate_Strategy >( target )
00067 {}
00068 
00069 void BFGSUpdate_StrategySetOptions::setOption(
00070   int option_num, const std::string& option_value )
00071 {
00072   using OptionsFromStreamPack::StringToBool;
00073   typedef BFGSUpdate_Strategy target_t;
00074   switch( (local_EOptions)option_num ) {
00075       case RESCALE_INIT_IDENTITY:
00076       target().rescale_init_identity(
00077         StringToBool( "rescale_init_identity", option_value.c_str() ));
00078       break;
00079       case USE_DAMPENING:
00080       target().use_dampening(
00081         StringToBool( "use_dampening", option_value.c_str() ));
00082       break;
00083       case SECANT_TESTING:
00084     {
00085       const std::string &option = option_value.c_str();
00086       if( option == "DEFAULT" )
00087         target().secant_testing( target_t::SECANT_TEST_DEFAULT );
00088       else if( option == "TEST" )
00089         target().secant_testing( target_t::SECANT_TEST_ALWAYS );
00090       else if( option == "NO_TEST" )
00091         target().secant_testing( target_t::SECANT_NO_TEST );
00092       else
00093         throw std::invalid_argument( "Error, incorrect value for "
00094           "\"secant_testing\"." );
00095       break;
00096     }
00097       case SECANT_WARNING_TOL:
00098       target().secant_warning_tol(std::fabs(std::atof(option_value.c_str())));
00099       break;
00100       case SECANT_ERROR_TOL:
00101       target().secant_error_tol(std::fabs(std::atof(option_value.c_str())));
00102       break;
00103     default:
00104       TEST_FOR_EXCEPT(true);  // Local error only?
00105   }
00106 }
00107 
00108 } // end namespace MoochoPack 
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