Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/include/G4ModifiedMidpoint.hh

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 24 //
 25 // G4ModifiedMidpoint
 26 //
 27 // Class description:
 28 //
 29 // Modified midpoint method implementation, based on Boost odeint
 30 
 31 // Author: Dmitry Sorokin, Google Summer of Code 2016
 32 // Supervision: John Apostolakis, CERN
 33 // --------------------------------------------------------------------
 34 #ifndef G4MODIFIED_MIDPOINT_HH
 35 #define G4MODIFIED_MIDPOINT_HH
 36 
 37 #include "G4Types.hh"
 38 #include "G4EquationOfMotion.hh"
 39 #include "G4FieldTrack.hh"
 40 
 41 class G4ModifiedMidpoint
 42 {
 43   public:
 44 
 45     G4ModifiedMidpoint( G4EquationOfMotion* equation,
 46                         G4int nvar = 6, G4int steps = 2 );
 47    ~G4ModifiedMidpoint() = default;
 48 
 49     void DoStep( const G4double yIn[], const G4double dydxIn[],
 50                  G4double yOut[], G4double hstep) const;
 51 
 52     void DoStep( const G4double yIn[], const G4double dydxIn[],
 53                  G4double yOut[], G4double hstep, G4double yMid[],
 54                  G4double derivs[][G4FieldTrack::ncompSVEC]) const;
 55 
 56     inline void SetSteps(G4int steps);
 57     inline G4int GetSteps() const;
 58 
 59     inline void SetEquationOfMotion(G4EquationOfMotion* equation);
 60     inline G4EquationOfMotion* GetEquationOfMotion();
 61 
 62     inline G4int GetNumberOfVariables() const;
 63 
 64   private:
 65 
 66     void copy(G4double dst[], const G4double src[]) const;
 67 
 68   private:
 69 
 70     G4EquationOfMotion* fEquation = nullptr;
 71     G4int fnvar = 0;
 72     G4int fsteps = 0;
 73 };
 74 
 75 #include "G4ModifiedMidpoint.icc"
 76 
 77 #endif
 78