Geant4  10.02.p02
G4MagIntegratorStepper.icc
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26 // $Id: G4MagIntegratorStepper.icc 66356 2012-12-18 09:02:32Z gcosmo $
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28 
29 inline
30 G4EquationOfMotion* G4MagIntegratorStepper::GetEquationOfMotion()
31 {
32  return fEquation_Rhs;
33 }
34 
35 inline void
36  G4MagIntegratorStepper::SetEquationOfMotion(G4EquationOfMotion* newEquation)
37 {
38  if( newEquation != 0 )
39  {
40  fEquation_Rhs= newEquation;
41  }
42 }
43 
44 inline
45 G4int G4MagIntegratorStepper::GetNumberOfVariables() const
46 {
47  return fNoIntegrationVariables;
48 }
49 
50 
51 inline
52 G4int G4MagIntegratorStepper::GetNumberOfStateVariables() const
53 {
54  return fNoStateVariables;
55 }
56 
57 inline
58 void G4MagIntegratorStepper::RightHandSide( const double y[], double dydx[] )
59 {
60  fEquation_Rhs-> RightHandSide(y, dydx);
61 }
62 
63 inline
64 void G4MagIntegratorStepper::NormaliseTangentVector( G4double vec[6] )
65 {
66  G4double drds2 = vec[3]*vec[3]+vec[4]*vec[4]+vec[5]*vec[5];
67 
68  if( std::fabs(drds2 - 1.0) > 1.e-14 )
69  {
70  G4double normx = 1.0 / std::sqrt(drds2);
71  for(G4int i=3;i<6;i++) { vec[i] *= normx; }
72  }
73 }
74 
75 inline
76 void G4MagIntegratorStepper::NormalisePolarizationVector( G4double vec[12] )
77 {
78  G4double drds2 = vec[9]*vec[9]+vec[10]*vec[10]+vec[11]*vec[11];
79 
80  if( drds2 > 0. )
81  {
82  if( std::fabs(drds2 - 1.0) > 1.e-14 )
83  {
84  G4double normx = 1.0 / std::sqrt(drds2);
85  for(G4int i=9;i<12;i++) { vec[i] *= normx; }
86  }
87  }
88 }