Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/include/G4ExplicitEuler.hh

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  1 //
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 25 //
 26 // G4ExplicitEuler
 27 //
 28 // Class description:
 29 //
 30 // Explicit Euler stepper for magnetic field: x_1 = x_0 + h * dx_0.
 31 // The most simple approach for solving linear differential equations.
 32 // Take the current derivative and add it to the current position.
 33 
 34 // Created: W.Wander <wwc@mit.edu>, 12.09.1997
 35 // -------------------------------------------------------------------
 36 #ifndef G4EXPLICITEULER_HH
 37 #define G4EXPLICITEULER_HH
 38 
 39 #include "G4MagErrorStepper.hh"
 40 
 41 class G4ExplicitEuler : public G4MagErrorStepper
 42 {
 43   public:
 44 
 45     G4ExplicitEuler(G4EquationOfMotion* EqRhs, G4int numberOfVariables = 6) ;
 46    ~G4ExplicitEuler() override;
 47 
 48     void  DumbStepper( const G4double y[],
 49                        const G4double dydx[],
 50                              G4double h,
 51                              G4double yout[] ) override;
 52 
 53     G4int IntegratorOrder() const override { return 1; }
 54 };
 55 
 56 #endif
 57