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G4FSALBogackiShampine45.hh
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25 //
26 // Bogacki-Shampine - 8 - 5(4) FSAL implementation by Somnath Banerjee
27 // Supervision / code review: John Apostolakis
28 //
29 // Sponsored by Google in Google Summer of Code 2015.
30 //
31 // First version: 26 May 2015
32 //
33 // History
34 // -----------------------------
35 // Created by Somnath on 26 May 2015
36 //
37 //
39 
40 #ifndef G4FSAL_Bogacki_Shampine_45_hh
41 #define G4FSAL_Bogacki_Shampine_45_hh
42 
44 
46 {
47 public:
49  G4int numberOfVariables = 6,
50  G4bool primary = true);
52 
53  void Stepper( const G4double y[],
54  const G4double dydx[],
55  G4double h,
56  G4double yout[],
57  G4double yerr[],
58  G4double nextDydx[]) ;
59 
60  void interpolate( const G4double yInput[],
61  const G4double dydx[],
62  G4double yOut[],
63  G4double Step,
64  G4double tau ) ;
65 
66 
67  G4double DistChord() const;
68  G4int IntegratorOrder() const { return 4; }
69 
70  private :
71 
74 
75  G4double *ak2, *ak3, *ak4, *ak5, *ak6, *ak7, *ak8,
76  *ak9, *ak10, *ak11,
77  *yTemp, *yIn;
78 
79  G4double *pseudoDydx_for_DistChord;
80  G4double fLastStepLength;
81  G4double *fLastInitialVector, *fLastFinalVector,
82  *fLastDyDx, *fMidVector, *fMidError;
83  // for DistChord calculations
84 
85  G4FSALBogackiShampine45* fAuxStepper;
86 };
87 
88 #endif /* defined( G4FSAL_Bogacki_Shampine_45_hh ) */
G4FSALBogackiShampine45(G4EquationOfMotion *EqRhs, G4int numberOfVariables=6, G4bool primary=true)
int G4int
Definition: G4Types.hh:78
void interpolate(const G4double yInput[], const G4double dydx[], G4double yOut[], G4double Step, G4double tau)
void Stepper(const G4double y[], const G4double dydx[], G4double h, G4double yout[], G4double yerr[], G4double nextDydx[])
bool G4bool
Definition: G4Types.hh:79
Definition: Step.hh:41
double G4double
Definition: G4Types.hh:76