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157 lines
4.6 KiB
C++
157 lines
4.6 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: Hadrons/Modules/MSink/Point.hpp
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Copyright (C) 2015-2018
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Author: Antonin Portelli <antonin.portelli@me.com>
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Author: Guido Cossu <guido.cossu@ed.ac.uk>
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Author: Lanny91 <andrew.lawson@gmail.com>
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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 directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef Hadrons_MSink_Point_hpp_
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#define Hadrons_MSink_Point_hpp_
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#include <Hadrons/Global.hpp>
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#include <Hadrons/Module.hpp>
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#include <Hadrons/ModuleFactory.hpp>
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BEGIN_HADRONS_NAMESPACE
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/******************************************************************************
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* Point *
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******************************************************************************/
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BEGIN_MODULE_NAMESPACE(MSink)
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class PointPar: Serializable
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{
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(PointPar,
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std::string, mom);
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};
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template <typename FImpl>
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class TPoint: public Module<PointPar>
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{
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public:
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BASIC_TYPE_ALIASES(FImpl,);
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SINK_TYPE_ALIASES();
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public:
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// constructor
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TPoint(const std::string name);
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// destructor
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virtual ~TPoint(void) {};
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// dependency relation
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virtual std::vector<std::string> getInput(void);
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virtual std::vector<std::string> getOutput(void);
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protected:
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// setup
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virtual void setup(void);
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// execution
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virtual void execute(void);
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private:
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bool hasPhase_{false};
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std::string momphName_;
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};
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MODULE_REGISTER_TMP(Point, TPoint<FIMPL>, MSink);
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MODULE_REGISTER_TMP(ScalarPoint, TPoint<ScalarImplCR>, MSink);
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/******************************************************************************
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* TPoint implementation *
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******************************************************************************/
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// constructor /////////////////////////////////////////////////////////////////
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template <typename FImpl>
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TPoint<FImpl>::TPoint(const std::string name)
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: Module<PointPar>(name)
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, momphName_ (name + "_momph")
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{}
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// dependencies/products ///////////////////////////////////////////////////////
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template <typename FImpl>
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std::vector<std::string> TPoint<FImpl>::getInput(void)
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{
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std::vector<std::string> in;
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return in;
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}
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template <typename FImpl>
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std::vector<std::string> TPoint<FImpl>::getOutput(void)
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{
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std::vector<std::string> out = {getName()};
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return out;
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}
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// setup ///////////////////////////////////////////////////////////////////////
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template <typename FImpl>
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void TPoint<FImpl>::setup(void)
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{
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envTmpLat(LatticeComplex, "coor");
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envCacheLat(LatticeComplex, momphName_);
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envCreate(SinkFn, getName(), 1, nullptr);
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}
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// execution ///////////////////////////////////////////////////////////////////
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template <typename FImpl>
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void TPoint<FImpl>::execute(void)
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{
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LOG(Message) << "Setting up point sink function for momentum ["
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<< par().mom << "]" << std::endl;
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auto &ph = envGet(LatticeComplex, momphName_);
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if (!hasPhase_)
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{
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Complex i(0.0,1.0);
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std::vector<Real> p;
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envGetTmp(LatticeComplex, coor);
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p = strToVec<Real>(par().mom);
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ph = zero;
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for(unsigned int mu = 0; mu < p.size(); mu++)
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{
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LatticeCoordinate(coor, mu);
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ph = ph + (p[mu]/env().getGrid()->_fdimensions[mu])*coor;
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}
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ph = exp((Real)(2*M_PI)*i*ph);
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hasPhase_ = true;
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}
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auto sink = [&ph](const PropagatorField &field)
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{
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SlicedPropagator res;
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PropagatorField tmp = ph*field;
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sliceSum(tmp, res, Tp);
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return res;
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};
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envGet(SinkFn, getName()) = sink;
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}
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END_MODULE_NAMESPACE
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END_HADRONS_NAMESPACE
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#endif // Hadrons_MSink_Point_hpp_
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