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Grid/lib/qcd/action/ActionBase.h
Peter Boyle f4c74e34d8 Committing incomplete work for parameter file I/O.
MacroMagic.h is central. Guido and I plan to move
over to generating virtual (XML, JSON, YAML, text, binary) encoding
from macro based system.
2015-07-27 18:32:28 +09:00

37 lines
1.1 KiB
C++

#ifndef QCD_ACTION_BASE
#define QCD_ACTION_BASE
namespace Grid {
namespace QCD{
template<class GaugeField>
class Action {
public:
virtual void init (const GaugeField &U, GridParallelRNG& pRNG) = 0; //
virtual RealD S (const GaugeField &U) = 0; // evaluate the action
virtual void deriv(const GaugeField &U,GaugeField & dSdU ) = 0; // evaluate the action derivative
virtual void refresh(const GaugeField & ) {}; // Default to no-op for actions with no internal fields
// Boundary conditions?
// Heatbath?
virtual ~Action() {};
};
// Could derive PseudoFermion action with a PF field, FermionField, and a Grid; implement refresh
template<class GaugeField, class FermionField>
class PseudoFermionAction : public Action<GaugeField> {
public:
FermionField Phi;
GridParallelRNG &pRNG;
GridBase &Grid;
PseudoFermionAction(GridBase &_Grid,GridParallelRNG &_pRNG) : Grid(_Grid), Phi(&_Grid), pRNG(_pRNG) {
};
virtual void refresh(const GaugeField &gauge) {
gaussian(Phi,pRNG);
};
};
}}
#endif