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dft_tools/triqs/mc_tools/mc_basic_step.hpp
Olivier Parcollet f2c7d449cc First commit : triqs libs version 1.0 alpha1
for earlier commits, see TRIQS0.x repository.
2013-07-17 19:24:07 +02:00

52 lines
1.5 KiB
C++

/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2011 by M. Ferrero, O. Parcollet
*
* TRIQS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
#ifndef MC_STEPS_H
#define MC_STEPS_H
#include <boost/mpi.hpp>
#include "mc_move_set.hpp"
namespace triqs { namespace mc_tools { namespace Step {
// Performs one Metropolis step
template<typename MCSignType>
struct Metropolis {
static void do_it (move_set<MCSignType> & MoveGroup, random_generator & RNG, MCSignType & signe){
double r = MoveGroup.attempt();
if (RNG() < std::min(1.0,r)) {
signe *= MoveGroup.accept();
#ifdef DEBUG
std::cerr<<" Metropolis sign = "<< signe <<std::endl;
#endif
}
else MoveGroup.reject();
}
};
// Put heat Bath here ....
}}}
#endif