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music-panphasia/random.cc

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2022-04-29 14:37:23 +02:00
/*
random.cc - This file is part of MUSIC -
a code to generate multi-scale initial conditions
for cosmological simulations
Copyright (C) 2010 Oliver Hahn
*/
#include "random.hh"
// TODO: move all this into a plugin!!!
std::map< std::string, RNG_plugin_creator *>&
get_RNG_plugin_map()
{
static std::map< std::string, RNG_plugin_creator* > RNG_plugin_map;
return RNG_plugin_map;
}
void print_RNG_plugins()
{
std::map< std::string, RNG_plugin_creator *>& m = get_RNG_plugin_map();
std::map< std::string, RNG_plugin_creator *>::iterator it;
it = m.begin();
std::cout << " - Available random number generator plug-ins:\n";
while( it!=m.end() )
{
if( (*it).second )
std::cout << "\t\'" << (*it).first << "\'\n";
++it;
}
}
RNG_plugin *select_RNG_plugin( config_file& cf )//, const refinement_hierarchy& refh )
{
std::string rngname = cf.getValueSafe<std::string>( "random", "generator", "MUSIC" );
RNG_plugin_creator *the_RNG_plugin_creator
= get_RNG_plugin_map()[ rngname ];
if( !the_RNG_plugin_creator )
{
std::cerr << " - Error: random number generator plug-in \'" << rngname << "\' not found." << std::endl;
LOGERR("Invalid/Unregistered random number generator plug-in encountered : %s",rngname.c_str() );
print_RNG_plugins();
throw std::runtime_error("Unknown random number generator plug-in");
}else
{
std::cout << " - Selecting random number generator plug-in \'" << rngname << "\'..." << std::endl;
LOGUSER("Selecting random number generator plug-in : %s",rngname.c_str() );
}
RNG_plugin *the_RNG_plugin
= the_RNG_plugin_creator->create( cf );//, refh );
return the_RNG_plugin;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark -
//////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////
//template class random_numbers<real_t>;
//template class random_number_generator< random_numbers<real_t>, real_t >;
/*template class random_numbers<float>;
template class random_numbers<double>;
template class random_number_generator< random_numbers<float>, float >;
template class random_number_generator< random_numbers<double>, double >;*/