Helper class for Backwards Difference Formula integration schemes. More...

#include <BDF.h>

Inheritance diagram for TimeIntegration::BDF:

Collaboration diagram for TimeIntegration::BDF:

Public Member Functions
	BDF (int order=0)
	Default constructor. More...

virtual	~BDF ()
	Empty destructor.

void	setOrder (int order)
	Initializes the coefficients for the specified order.

int	getOrder () const
	Returns the order to be used for current time step.

int	getActualOrder () const
	Returns the order of the scheme.

short int	getDegree () const
	Returns the degree of the time derivative approximation.

bool	advanceStep (double dt=0.0, double dtn=0.0)
	Advances the time stepping scheme.

virtual const std::vector< double > &	getCoefs () const
	Returns the BDF coefficients.

double	operator[] (int idx) const
	Indexing operator returning the idx'th coefficient.

template<class T >
T	extrapolate (const std::vector< T > &values) const
	Extrapolates values. More...

Protected Attributes
short int	degree
	Degree of the time derivative approximation.

int	step
	Time step counter.

std::vector< double >	coefs
	The BDF coefficients.

std::vector< double >	coefs1
	BDF coefficients for first time step.

Detailed Description

Helper class for Backwards Difference Formula integration schemes.

Keeps track of coefficients, startup and extrapolation.

Constructor & Destructor Documentation

TimeIntegration::BDF::BDF ( int order = 0 )

explicit

Default constructor.

Parameters

[in] order The order of the BDF scheme

References setOrder().

template<class T >

T TimeIntegration::BDF::extrapolate ( const std::vector< T > & values ) const

inline

Extrapolates values.

Parameters

[in] values The values to be extrapolated

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