forceSmear_APE.h

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#ifndef FORCESMEAR_APE_INCLUDED
#define FORCESMEAR_APE_INCLUDED

#include "forceSmear.h"
#include "smear_APE.h"

#include "bridge_complex.h"
#include "shiftField_lex.h"

#include "projection.h"

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


//- parameters class
class Parameters_ForceSmear_APE : virtual public Parameters
{
 public:
  Parameters_ForceSmear_APE();
};
//- end

class ForceSmear_APE : public ForceSmear
{
 public:
  static const std::string class_name;

 private:
  int                  m_Ndim, m_Nvol;
  std::vector<double>  m_rho;
  Projection           *m_proj;
  ShiftField_lex       m_shift;
  std::vector<Field_G> m_U;
  std::vector<Field_G> m_iTheta;

 public:
  ForceSmear_APE(Projection *proj)
    : ForceSmear(), m_proj(proj)
  {
    init();
  }

  ForceSmear_APE(unique_ptr<Projection>& proj)
    : ForceSmear(), m_proj(proj.get())
  {
    init();
  }

  //  ~ForceSmear_APE(){
  //  };

  // Setting parameters with Parameters object.
  void set_parameters(const Parameters& params);

  // Setting parameters with uniform smearing parameter.
  void set_parameters(const double rho1);

  // Setting parameters with anisotropic smearing parameter.
  void set_parameters(const std::vector<double>& rho);

  // Force computation.
  void force_udiv(Field_G& Sigma, const Field_G& Sigma_p, const Field_G& U);

 private:

  void init();

  double rho(int mu, int nu)
  {
    return m_rho[mu + nu * m_Ndim];
  }

  void force_each(Field_G&, const Field_G&, const Field_G&,
                  const Field_G&, const Field_G&, int mu, int nu);

  void staple(Field_G&, const Field_G&, const Field_G&,
              int mu, int nu);
};
#endif