G4SimpleRunge Class Reference

#include <G4SimpleRunge.hh>

Inheritance diagram for G4SimpleRunge:

Public Member Functions
	G4SimpleRunge (G4EquationOfMotion *EquationRhs, G4int numberOfVariables=6)
	~G4SimpleRunge ()
void	DumbStepper (const G4double y[], const G4double dydx[], G4double h, G4double yout[])
G4int	IntegratorOrder () const

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Detailed Description

Definition at line 51 of file G4SimpleRunge.hh.

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Constructor & Destructor Documentation

G4SimpleRunge::G4SimpleRunge	(	G4EquationOfMotion *	EquationRhs,
		G4int	numberOfVariables = 6
	)

Definition at line 48 of file G4SimpleRunge.cc.

References G4MagIntegratorStepper::GetNumberOfStateVariables().

  : G4MagErrorStepper(EqRhs, numberOfVariables),
    fNumberOfVariables(numberOfVariables)
{
   
   unsigned int noVariables= std::max(numberOfVariables,
                                        GetNumberOfStateVariables()); 
                                             // To deal with Time >= 7+1 
   dydxTemp = new G4double[noVariables] ;
   yTemp    = new G4double[noVariables] ;
}

G4SimpleRunge::~G4SimpleRunge

(

)

Definition at line 65 of file G4SimpleRunge.cc.

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

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Member Function Documentation

void G4SimpleRunge::DumbStepper	(	const G4double	y[],
		const G4double	dydx[],
		G4double	h,
		G4double	yout[]
	)			[virtual]

Implements G4MagErrorStepper.

Definition at line 76 of file G4SimpleRunge.cc.

References G4MagIntegratorStepper::RightHandSide().

{
  // 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

  G4int i;

  for( i = 0; i < fNumberOfVariables; i++ ) 
  {
    yTemp[i] = yIn[i] + 0.5 * h*dydx[i] ;
  }
  
  RightHandSide(yTemp,dydxTemp);
  
  for( i = 0; i < fNumberOfVariables; i++ ) 
  {
    yOut[i] = yIn[i] + h * ( dydxTemp[i] );
  }
}  

G4int G4SimpleRunge::IntegratorOrder

(

)

const [inline, virtual]

Implements G4MagIntegratorStepper.

Definition at line 67 of file G4SimpleRunge.hh.

{ return 2; }

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

• G4SimpleRunge.hh
• G4SimpleRunge.cc

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