MoochoPack : Framework for Large-Scale Optimization Algorithms Version of the Day
MoochoPack_InitFinDiffReducedHessian_StepSetOptions.cpp
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00004 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
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00041 
00042 #include <assert.h>
00043 #include <math.h>
00044 
00045 #include "MoochoPack_InitFinDiffReducedHessian_StepSetOptions.hpp"
00046 #include "OptionsFromStreamPack_StringToBool.hpp"
00047 
00048 // Define the options
00049 namespace {
00050 
00051   const int local_num_options = 4;
00052 
00053   enum local_EOptions {
00054     INITIALIZATION_METHOD,
00055     MAX_COND,
00056     MIN_DIAG,
00057     STEP_SCALE
00058   };
00059 
00060   const char* local_SOptions[local_num_options] = {
00061     "initialization_method",
00062     "max_cond",
00063     "min_diag",
00064     "step_scale"
00065   };
00066 
00067 }
00068 
00069 namespace MoochoPack {
00070 
00071 InitFinDiffReducedHessian_StepSetOptions::InitFinDiffReducedHessian_StepSetOptions(
00072         InitFinDiffReducedHessian_Step* target
00073       , const char opt_grp_name[] )
00074   : OptionsFromStreamPack::SetOptionsFromStreamNode(
00075         opt_grp_name, local_num_options, local_SOptions )
00076     , OptionsFromStreamPack::SetOptionsToTargetBase<
00077       InitFinDiffReducedHessian_Step >( target )
00078 {}
00079 
00080 void InitFinDiffReducedHessian_StepSetOptions::setOption(
00081   int option_num, const std::string& option_value )
00082 {
00083   typedef InitFinDiffReducedHessian_Step target_t;
00084   switch( (local_EOptions)option_num ) {
00085       case INITIALIZATION_METHOD:
00086     {
00087       const std::string &option = option_value.c_str();
00088       if( option == "SCALE_IDENTITY" )
00089         target().initialization_method( target_t::SCALE_IDENTITY );
00090       else if( option == "SCALE_DIAGONAL" )
00091         target().initialization_method( target_t::SCALE_DIAGONAL );
00092       else if( option == "SCALE_DIAGONAL_ABS" )
00093         target().initialization_method( target_t::SCALE_DIAGONAL_ABS );
00094       else
00095         throw std::invalid_argument( "Error, incorrect value for "
00096           "\"initialization_method\"." );
00097       break;
00098     }
00099       case MAX_COND:
00100       target().max_cond(std::fabs(std::atof(option_value.c_str())));
00101       break;
00102     case MIN_DIAG:
00103       target().min_diag(std::abs(std::atoi(option_value.c_str())));
00104       break;
00105     case STEP_SCALE:
00106       target().step_scale(std::fabs(std::atof(option_value.c_str())));
00107       break;
00108     default:
00109       TEUCHOS_TEST_FOR_EXCEPT(true);  // Local error only?
00110   }
00111 }
00112 
00113 } // end namespace MoochoPack 
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