mirror of
https://github.com/triqs/dft_tools
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82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
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/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2011 by M. Ferrero, O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#include "random_generator.hpp"
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#include "./MersenneRNG.hpp"
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#include <boost/random.hpp>
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//#include <boost/random/uniform_int.hpp>
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#include <boost/random/uniform_real.hpp>
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//#include <boost/random/variate_generator.hpp>
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#include <boost/random/mersenne_twister.hpp>
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#include <boost/random/lagged_fibonacci.hpp>
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#include <boost/random/ranlux.hpp>
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#include <sstream>
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#include <boost/preprocessor/seq.hpp>
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#include <boost/preprocessor/control/if.hpp>
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#define AS_STRING(X) AS_STRING2(X)
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#define AS_STRING2(X) #X
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// List of All available Boost random number generator
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#define RNG_LIST (mt19937)(mt11213b)\
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(lagged_fibonacci607) (lagged_fibonacci1279) (lagged_fibonacci2281) (lagged_fibonacci3217) (lagged_fibonacci4423)\
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(lagged_fibonacci9689) (lagged_fibonacci19937) (lagged_fibonacci23209) (lagged_fibonacci44497) (ranlux3)
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namespace triqs {
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namespace mc_tools {
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typedef boost::generator <double> gen_type;
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inline gen_type * choose_gen(std::string const & RandomGeneratorName, std::size_t seed_, boost::shared_ptr<void> &ptr) {
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if (RandomGeneratorName=="") return new gen_type( mc_tools::RandomGenerators::RandMT (seed_));
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// now boost random number generators
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#define DRNG(r,data,XX) if (RandomGeneratorName==AS_STRING(XX)) { \
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boost::shared_ptr<boost::XX> localptr = boost::make_shared<boost::XX>(seed_);\
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ptr = localptr; boost::uniform_real<> dis;\
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return new gen_type( boost::variate_generator<boost::XX&, boost::uniform_real<> >(*localptr,dis));}
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BOOST_PP_SEQ_FOR_EACH(DRNG,~,RNG_LIST)
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TRIQS_RUNTIME_ERROR<<"The random generator "<<RandomGeneratorName<<" is not recognized";
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}
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//---------------------------------------------
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random_generator::random_generator(std::string const & RandomGeneratorName, std::size_t seed_ ) :
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rng_ptr(), gen (choose_gen(RandomGeneratorName,seed_,rng_ptr)), name(RandomGeneratorName),seed(seed_) {}
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//---------------------------------------------
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random_generator::random_generator( random_generator const & p) :
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rng_ptr(), gen (choose_gen(p.name,p.seed,rng_ptr)), name (p.name),seed(p.seed) {}
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//---------------------------------------------
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std::string random_generator::random_generator_names(std::string const & sep) {
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#define PR(r,sep,p,XX) BOOST_PP_IF(p,+ sep +,) std::string(AS_STRING(XX))
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return BOOST_PP_SEQ_FOR_EACH_I (PR,sep,RNG_LIST);
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}
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}
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}
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