gradientFlow.h

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#ifndef GRADIENTFLOW_INCLUDED
#define GRADIENTFLOW_INCLUDED
 
#include "gradientFlow_RungeKutta_1st.h"
#include "gradientFlow_RungeKutta_2nd.h"
#include "gradientFlow_RungeKutta_3rd.h"
#include "gradientFlow_RungeKutta_4th.h"
#include "gradientFlow_AdaptiveRungeKutta.h"
 
#include "staple_lex.h"
 
#include "topologicalCharge.h"
 
#include "IO/bridgeIO.h"
using Bridge::vout;
 
 
class GradientFlow
{
 public:
  static const std::string class_name;
 
 protected:
  Bridge::VerboseLevel m_vl;
 
 private:
  int m_Norder_RK;
  double m_Estep;
  int m_Nprec;
  double m_tolerance;
  double m_safety;
  bool m_is_adaptive;
 
  Action *m_action;
  Staple_lex m_staple;
 
  GradientFlow_RungeKutta *m_impl;
 
 public:
  GradientFlow(Action *action);
 
  GradientFlow(Action *action, const Parameters& params);
 
  ~GradientFlow();
 
 private:
  // non-copyable
  GradientFlow(const GradientFlow&);
  GradientFlow& operator=(const GradientFlow&);
 
 public:
  void set_parameters(const Parameters& params);
  void set_parameters(const int Norder_RK,
                      const double Estep, const int Nprec,
                      const int adaptive,
                      const double tolerance, const double safety);  // backward compability
  void set_parameters(const int Norder_RK,
                      const double Estep, const int Nprec,
                      const bool adaptive,
                      const double tolerance, const double safety);
  void set_parameter_Norder_RK(const int order, const bool is_adaptive);
 
  void get_parameters(Parameters& params) const;
 
  void initialize();
 
  double evolve(double& t, Field_G& U);
 
  double evolve(Field_G& U, int ntau);
 
  double evolve_wt_output(Field_G& U);
 
  double evolve_wo_output(Field_G& U);
};
#endif