Geant4  10.01.p03
G4SimpleHeum.hh
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27 // $Id: G4SimpleHeum.hh 66356 2012-12-18 09:02:32Z gcosmo $
28 //
29 //
30 // class G4SimpleHeum
31 //
32 // Class description:
33 //
34 // Simple Heum stepper for magnetic field:
35 // x_1 = x_0 +
36 // h * 1/4 * dx(t0,x0) +
37 // 3/4 * dx(t0+2/3*h, x0+2/3*h*(dx(t0+h/3,x0+h/3*dx(t0,x0))))
38 //
39 // Third order solver.
40 
41 // History:
42 // - Created. W. Wander <wwc@mit.edu>, 12/09/97
43 // -------------------------------------------------------------------
44 
45 #ifndef G4SIMPLEHEUM_HH
46 #define G4SIMPLEHEUM_HH
47 
48 #include "G4MagErrorStepper.hh"
49 
51 {
52 
53  public: // with description
54 
55  G4SimpleHeum(G4EquationOfMotion *EqRhs, G4int num_variables=6);
56  ~G4SimpleHeum();
57  // Constructor and destructor.
58 
59  void DumbStepper( const G4double y[],
60  const G4double dydx[],
61  G4double h,
62  G4double yout[]);
63 
64  public: // without description
65 
66  G4int IntegratorOrder() const { return 3; }
67 
68  private:
69 
71 
76  // scratch space
77 };
78 
79 #endif /* G4SIMPLEHEUM_HH */
void DumbStepper(const G4double y[], const G4double dydx[], G4double h, G4double yout[])
Definition: G4SimpleHeum.cc:75
G4int IntegratorOrder() const
Definition: G4SimpleHeum.hh:66
int G4int
Definition: G4Types.hh:78
G4SimpleHeum(G4EquationOfMotion *EqRhs, G4int num_variables=6)
Definition: G4SimpleHeum.cc:46
G4int fNumberOfVariables
Definition: G4SimpleHeum.hh:70
G4double * dydxTemp
Definition: G4SimpleHeum.hh:72
G4double * yTemp
Definition: G4SimpleHeum.hh:74
G4double * yTemp2
Definition: G4SimpleHeum.hh:75
double G4double
Definition: G4Types.hh:76
G4double * dydxTemp2
Definition: G4SimpleHeum.hh:73