fopr_CloverTerm.h

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#ifndef FOPR_CLOVERTERM_IMP_INCLUDED
#define FOPR_CLOVERTERM_IMP_INCLUDED

#include "Fopr/fopr_Wilson.h"

#include "Measurements/Gauge/staple_lex.h"

#include "IO/bridgeIO.h"
using Bridge::vout;


namespace Imp {
  class Fopr_CloverTerm : public Fopr
  {
   public:
    static const std::string class_name;

   private:
    double           m_kappa;
    double           m_cSW;
    std::vector<int> m_boundary;
    std::string      m_repr;
    std::string      m_mode;
    void             (Fopr_CloverTerm::*m_csw)(Field&, const Field&);
    void             (Fopr_CloverTerm::*m_gm5)(Field&, const Field&);

    int m_Nc, m_Nd, m_NinF, m_Ndim;
    int m_Nvol;

    const Field_G *m_U;  

    ShiftField_lex m_shift;
    Staple_lex     m_staple;
    Field_G        m_Cup, m_Cdn, m_v1, m_v2;           
    Field_G        m_Bx, m_By, m_Bz, m_Ex, m_Ey, m_Ez; 
    // Bx = -iF(1,2), By = -iF(2,0), Bz = -iF(0,1)
    // Ex = -iF(3,0), Ey = -iF(3,1), Ez = -iF(3,2)

    std::vector<GammaMatrix> m_SG;
    GammaMatrix              m_GM5;

   public:
    Fopr_CloverTerm()
      : Fopr()
    {
      init("Dirac");
    }

    Fopr_CloverTerm(std::string repr)
      : Fopr()
    {
      init(repr);
    }

    ~Fopr_CloverTerm()
    {
      tidyup();
    }

    void set_parameters(const Parameters& params);
    void set_parameters(double kappa, double cSW, std::vector<int> bc);

    void set_config(Field *U);

    void set_config(unique_ptr<Field_G>& U)
    {
      set_config(U.get());
    }

    void set_mode(std::string mode)
    {
      m_mode = mode;
    }

    std::string get_mode() const
    {
      return m_mode;
    }

    void mult(Field& v, const Field& f)
    {
      if (m_mode == "D") {
        mult_sigmaF(v, f);
//  } else if(m_mode=="H"){
//    H(v,f);
      } else {
        vout.crucial("Error at %s: undefined mode = %s\n", class_name.c_str(), m_mode.c_str());
        exit(EXIT_FAILURE);
      }
    }

    void mult_dag(Field& v, const Field& f)
    {
      mult(v, f);
    }

    void mult_sigmaF(Field&, const Field&);

    void mult_gm5(Field& v, const Field& w);

    void mult_isigma(Field_F&, const Field_F&,
                     const int mu, const int nu);

    int field_nvol() { return m_Nvol; }
    int field_nin() { return 2 * m_Nc * m_Nd; }
    int field_nex() { return 1; }

    double flop_count();

   private:

    void init(std::string repr);
    void tidyup();

    void set_csw();
    void set_fieldstrength(Field_G&, const int, const int);

    void gm5_dirac(Field&, const Field&);
    void gm5_chiral(Field&, const Field&);

    void mult_csw(Field&, const Field&);
    void mult_csw_dirac(Field&, const Field&);
    void mult_csw_chiral(Field&, const Field&);

    void mult_csw_dirac(Field_F&, const Field_F&);
    void mult_csw_chiral(Field_F&, const Field_F&);

    int sg_index(int mu, int nu) { return mu * m_Ndim + nu; }
  };
}
#endif