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https://github.com/triqs/dft_tools
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c0993d9db8
When TRIQS_MCTOOLS_DEBUG is defined, the qmc now reports some basic debug info (when is a move accepted, rejected, ...).
60 lines
1.7 KiB
C++
60 lines
1.7 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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#ifndef MC_STEPS_H
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#define MC_STEPS_H
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#include <boost/mpi.hpp>
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#include "mc_move_set.hpp"
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namespace triqs {
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namespace mc_tools {
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namespace Step {
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// Performs one Metropolis step
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template <typename MCSignType> struct Metropolis {
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static void do_it(move_set<MCSignType>& MoveGroup, random_generator& RNG, MCSignType& signe) {
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double r = MoveGroup.attempt();
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if (RNG() < std::min(1.0, r)) {
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#ifdef TRIQS_MCTOOLS_DEBUG
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std::cerr << " Move accepted " << std::endl;
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#endif
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signe *= MoveGroup.accept();
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#ifdef TRIQS_MCTOOLS_DEBUG
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std::cerr << " New sign = " << signe << std::endl;
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#endif
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} else {
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#ifdef TRIQS_MCTOOLS_DEBUG
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std::cerr << " Move rejected " << std::endl;
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#endif
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MoveGroup.reject();
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}
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}
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};
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// Put heat Bath here ....
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}
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}
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}
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#endif
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