#include <G4ImplicitEuler.hh>

Inheritance diagram for G4ImplicitEuler:

Public Member Functions
	G4ImplicitEuler (G4EquationOfMotion *EqRhs, G4int numberOfVariables=6)

	~G4ImplicitEuler ()

void	DumbStepper (const G4double y[], const G4double dydx[], G4double h, G4double yout[])

G4int	IntegratorOrder () const

Public Member Functions inherited from G4MagErrorStepper
	G4MagErrorStepper (G4EquationOfMotion *EqRhs, G4int numberOfVariables, G4int numStateVariables=12)

virtual	~G4MagErrorStepper ()

	G4MagErrorStepper (const G4MagErrorStepper &)=delete

G4MagErrorStepper &	operator= (const G4MagErrorStepper &)=delete

void	Stepper (const G4double y[], const G4double dydx[], G4double h, G4double yout[], G4double yerr[])

virtual void	DumbStepper (const G4double y[], const G4double dydx[], G4double h, G4double yout[])=0

G4double	DistChord () const

Public Member Functions inherited from G4MagIntegratorStepper
	G4MagIntegratorStepper (G4EquationOfMotion *Equation, G4int numIntegrationVariables, G4int numStateVariables=12, G4bool isFSAL=false)

virtual	~G4MagIntegratorStepper ()=default

	G4MagIntegratorStepper (const G4MagIntegratorStepper &)=delete

G4MagIntegratorStepper &	operator= (const G4MagIntegratorStepper &)=delete

virtual void	Stepper (const G4double y[], const G4double dydx[], G4double h, G4double yout[], G4double yerr[])=0

virtual G4double	DistChord () const =0

void	NormaliseTangentVector (G4double vec[6])

void	NormalisePolarizationVector (G4double vec[12])

void	RightHandSide (const G4double y[], G4double dydx[]) const

void	RightHandSide (const G4double y[], G4double dydx[], G4double field[]) const

G4int	GetNumberOfVariables () const

G4int	GetNumberOfStateVariables () const

virtual G4int	IntegratorOrder () const =0

G4int	IntegrationOrder ()

G4EquationOfMotion *	GetEquationOfMotion ()

const G4EquationOfMotion *	GetEquationOfMotion () const

void	SetEquationOfMotion (G4EquationOfMotion *newEquation)

unsigned long	GetfNoRHSCalls ()

void	ResetfNORHSCalls ()

G4bool	IsFSAL () const

Additional Inherited Members
Protected Member Functions inherited from G4MagIntegratorStepper
void	SetIntegrationOrder (G4int order)

void	SetFSAL (G4bool flag=true)

Detailed Description

Definition at line 45 of file G4ImplicitEuler.hh.

Constructor & Destructor Documentation

◆ G4ImplicitEuler()

G4ImplicitEuler::G4ImplicitEuler	(	G4EquationOfMotion *	EqRhs,
		G4int	numberOfVariables = `6`
	)

Definition at line 47 of file G4ImplicitEuler.cc.

  : G4MagErrorStepper(EqRhs, numberOfVariables)
{
  unsigned int noVariables = std::max(numberOfVariables,8); // For Time .. 7+1
  dydxTemp = new G4double[noVariables] ;
  yTemp    = new G4double[noVariables] ;
}

◆ ~G4ImplicitEuler()

G4ImplicitEuler::~G4ImplicitEuler ( )

Definition at line 61 of file G4ImplicitEuler.cc.

{
  delete [] dydxTemp;
  delete [] yTemp;
}

Member Function Documentation

◆ DumbStepper()

void G4ImplicitEuler::DumbStepper	(	const G4double	y[],
		const G4double	dydx[],
		G4double	h,
		G4double	yout[]
	)

virtual

Implements G4MagErrorStepper.

Definition at line 72 of file G4ImplicitEuler.cc.

{
  const G4int numberOfVariables = GetNumberOfVariables();
 
  // Initialise time to t0, needed when it is not updated by the integration.
  //
  yTemp[7] = yOut[7] = yIn[7];   //  Better to set it to NaN;  // TODO
 
  for( G4int i = 0; i < numberOfVariables; ++i ) 
  {
    yTemp[i] = yIn[i] + h*dydx[i] ;          
  }
  
  RightHandSide(yTemp,dydxTemp);
  
  for( G4int i = 0; i < numberOfVariables; ++i ) 
  {
    yOut[i] = yIn[i] + 0.5 * h * ( dydx[i] + dydxTemp[i] );
  }
 
  return;
}  

◆ IntegratorOrder()

G4int G4ImplicitEuler::IntegratorOrder ( ) const

inlinevirtual

Implements G4MagIntegratorStepper.

Definition at line 58 of file G4ImplicitEuler.hh.

58{ return 2; }

The documentation for this class was generated from the following files:

Public Member Functions