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81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/modules/exp_scalar.h
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Copyright (C) 2018
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Author: Guido Cossu <guido.cossu@ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef HMC_EXP_SCALAR_H
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#define HMC_EXP_SCALAR_H
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namespace Grid {
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namespace QCD {
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struct ExpScalarParameters : Serializable {
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GRID_SERIALIZABLE_CLASS_MEMBERS(ExpScalarParameters,
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double, a)
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ExpScalarParameters(double _a = 0.0):a(_a){}
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template < class ReaderClass >
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ExpScalarParameters(Reader<ReaderClass>& Reader){
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read(Reader, "ExpScalar", *this);
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}
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};
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template <class Impl>
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class ExpScalarLogger : public HmcObservable<typename Impl::Field> {
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ExpScalarParameters Pars;
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public:
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// necessary for HmcObservable compatibility
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typedef typename Impl::Field Field;
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ExpScalarLogger(double _a):Pars(_a){}
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ExpScalarLogger(ExpScalarParameters P):Pars(P){}
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void TrajectoryComplete(int traj, typename Impl::Field &U,
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GridSerialRNG &sRNG,
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GridParallelRNG &pRNG) {
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double e = sum(trace(exp(Pars.a*U)));
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int def_prec = std::cout.precision();
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std::cout << GridLogMessage
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<< std::setprecision(std::numeric_limits<Real>::digits10 + 1)
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<< "ExpScalar: [ " << traj << " ] "<< e << std::endl;
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std::cout.precision(def_prec);
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}
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};
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} // namespace QCD
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} // namespace Grid
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#endif // HMC_PLAQUETTE_H
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