unprec_clover_linop_w.h

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// -*- C++ -*-
/*! \file
 *  \brief Unpreconditioned Clover fermion linear operator
 */
 
#ifndef __unprec_clover_linop_w_h__
#define __unprec_clover_linop_w_h__
 
#include "linearop.h"
#include "actions/ferm/linop/dslash_w.h"
#include "actions/ferm/linop/clover_term_w.h"
 
 
namespace Chroma 
{ 
  //! Unpreconditioned Clover-Dirac operator
  /*!
   * \ingroup linop
   *
   * This routine is specific to Wilson fermions!
   */
  
  class UnprecCloverLinOp : public UnprecLinearOperator<LatticeFermion, 
                            multi1d<LatticeColorMatrix>, multi1d<LatticeColorMatrix> >
  {
  public:
    // Typedefs to save typing
    typedef LatticeFermion               T;
    typedef multi1d<LatticeColorMatrix>  P;
    typedef multi1d<LatticeColorMatrix>  Q;
 
    //! Partial constructor
    UnprecCloverLinOp() {}
 
    //! Full constructor
    UnprecCloverLinOp(Handle< FermState<T,P,Q> > fs,
                      const CloverFermActParams& param_)
      {create(fs,param_);}
    
    //! Destructor is automatic
    ~UnprecCloverLinOp() {}
 
    //! Return the fermion BC object for this linear operator
    const FermBC<T,P,Q>& getFermBC() const {return D.getFermBC();}
 
    //! Creation routine
    void create(Handle< FermState<T,P,Q> > fs,
                const CloverFermActParams& param_);
 
    //! Apply the operator onto a source std::vector
    void operator() (LatticeFermion& chi, const LatticeFermion& psi, enum PlusMinus isign) const;
 
    //! Derivative of unpreconditioned Clover dM/dU
    void deriv(multi1d<LatticeColorMatrix>& ds_u, 
               const LatticeFermion& chi, const LatticeFermion& psi, 
               enum PlusMinus isign) const;
 
    //! Return flops performed by the operator()
    unsigned long nFlops() const;
 
  private:
    CloverFermActParams param;
    WilsonDslash        D;
    CloverTerm          A;
  };
 
} // End Namespace Chroma
 
 
#endif