A local operator that scales the result of another local operator. More...

#include <dune/pdelab/localoperator/scaled.hh>

Control flags
enum
	Whether to assemble the pattern on the elements, i.e. whether or not pattern_volume() should be called.

enum
	Whether to assemble the pattern on the elements after the skeleton has been handled, i.e. whether or not pattern_volume_post_skeleton() should be called.

enum
	Whether to assemble the pattern on the interior intersections, i.e. whether or not pattern_skeleton() should be called.

enum
	Whether to assemble the pattern on the boundary intersections, i.e. whether or not pattern_boundary() should be called.

enum
	Whether to call the local operator's alpha_volume(), jacobian_apply_volume() and jacobian_volume().

enum
	Whether to call the local operator's alpha_volume_post_skeleton(), jacobian_apply_volume_post_skeleton() and jacobian_volume_post_skeleton().

enum
	Whether to call the local operator's alpha_skeleton(), jacobian_apply_skeleton() and jacobian_skeleton().

enum
	Whether to call the local operator's alpha_boundary(), jacobian_apply_boundary() and jacobian_boundary().

enum
	Whether to call the local operator's lambda_volume().

enum
	Whether to call the local operator's lambda_volume_post_skeleton().

enum
	Whether to call the local operator's lambda_skeleton().

enum
	Whether to call the local operator's lambda_boundary().

enum
	Whether to visit the skeleton methods from both sides.

Methods for temporal local operators
typedef Time	RealType

void	setTime (Time t)
	set time for subsequent evaluation More...

Time	getTime () const
	get current time More...

void	preStep (Time time, Time dt, int stages)
	to be called once before each time step More...

void	postStep ()
	to be called once at the end of each time step More...

void	preStage (Time time, int r)
	to be called once before each stage More...

int	getStage () const
	get current stage More...

void	postStage ()
	to be called once at the end of each stage

Time	suggestTimestep (Time dt) const
	to be called after stage 1 More...

Construction and modification
	ScaledLocalOperator (Backend &backend, Factor factor_=0)
	construct a ScaledLocalOperator More...

	ScaledLocalOperator (Factor factor_=0)
	construct a ScaledLocalOperator More...

void	setFactor (Factor factor_)
	set the scaling factor

Factor	getFactor () const
	get the scaling factor

void	setBackend (Backend &backend)
	set the backend

Backend &	getBackend () const
	get a reference to the backend

Methods for the sparsity pattern
template<typename LFSU , typename LFSV , typename LocalPattern >
void	pattern_volume (const LFSU &lfsu, const LFSV &lfsv, LocalPattern &pattern) const
	get an element's contribution to the sparsity pattern More...

template<typename LFSU , typename LFSV , typename LocalPattern >
void	pattern_volume_post_skeleton (const LFSU &lfsu, const LFSV &lfsv, LocalPattern &pattern) const
	get an element's contribution to the sparsity pattern after the intersections have been handled More...

template<typename LFSU , typename LFSV , typename LocalPattern >
void	pattern_skeleton (const LFSU &lfsu_s, const LFSV &lfsv_s, const LFSU &lfsu_n, const LFSV &lfsv_n, LocalPattern &pattern_sn, LocalPattern &pattern_ns) const
	get an internal intersection's contribution to the sparsity pattern More...

template<typename LFSU , typename LFSV , typename LocalPattern >
void	pattern_boundary (const LFSU &lfsu_s, const LFSV &lfsv_s, LocalPattern &pattern_ss) const
	get a boundary intersection's contribution to the sparsity pattern More...

Methods for the residual – non-constant parts
template<typename EG , typename LFSU , typename X , typename LFSV , typename R >
void	alpha_volume (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, R &r) const
	get an element's contribution to alpha More...

template<typename EG , typename LFSU , typename X , typename LFSV , typename R >
void	alpha_volume_post_skeleton (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, R &r) const
	get an element's contribution to alpha after the intersections have been handled More...

template<typename IG , typename LFSU , typename X , typename LFSV , typename R >
void	alpha_skeleton (const IG &ig, const LFSU &lfsu_s, const X &x_s, const LFSV &lfsv_s, const LFSU &lfsu_n, const X &x_n, const LFSV &lfsv_n, R &r_s, R &r_n) const
	get an internal intersections's contribution to alpha More...

template<typename IG , typename LFSU , typename X , typename LFSV , typename R >
void	alpha_boundary (const IG &ig, const LFSU &lfsu_s, const X &x_s, const LFSV &lfsv_s, R &r_s) const
	get a boundary intersections's contribution to alpha More...

Methods for the residual – constant parts
template<typename EG , typename LFSV , typename R >
void	lambda_volume (const EG &eg, const LFSV &lfsv, R &r) const
	get an element's contribution to lambda More...

template<typename EG , typename LFSV , typename R >
void	lambda_volume_post_skeleton (const EG &eg, const LFSV &lfsv, R &r) const
	get an element's contribution to lambda after the intersections have been handled More...

template<typename IG , typename LFSV , typename R >
void	lambda_skeleton (const IG &ig, const LFSV &lfsv_s, const LFSV &lfsv_n, R &r_s, R &r_n) const
	get an internal intersections's contribution to lambda More...

template<typename IG , typename LFSV , typename R >
void	lambda_boundary (const IG &ig, const LFSV &lfsv_s, R &r_s) const
	get a boundary intersections's contribution to lambda More...

Methods for the application of the jacobian
template<typename EG , typename LFSU , typename X , typename LFSV , typename Y >
void	jacobian_apply_volume (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, Y &y) const
	apply an element's jacobian More...

template<typename EG , typename LFSU , typename X , typename LFSV , typename Y >
void	jacobian_apply_volume_post_skeleton (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, Y &y) const
	apply an element's jacobian after the intersections have been handled More...

template<typename IG , typename LFSU , typename X , typename LFSV , typename Y >
void	jacobian_apply_skeleton (const IG &ig, const LFSU &lfsu_s, const X &x_s, const LFSV &lfsv_s, const LFSU &lfsu_n, const X &x_n, const LFSV &lfsv_n, Y &y_s, Y &y_n) const
	apply an internal intersections's jacobians More...

template<typename IG , typename LFSU , typename X , typename LFSV , typename Y >
void	jacobian_apply_boundary (const IG &ig, const LFSU &lfsu_s, const X &x_s, const LFSV &lfsv_s, Y &y_s) const
	apply a boundary intersections's jacobian More...

Methods to extract the jacobian
template<typename EG , typename LFSU , typename X , typename LFSV , typename M >
void	jacobian_volume (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, M &mat) const
	get an element's jacobian More...

template<typename EG , typename LFSU , typename X , typename LFSV , typename M >
void	jacobian_volume_post_skeleton (const EG &eg, const LFSU &lfsu, const X &x, const LFSV &lfsv, M &mat) const
	get an element's jacobian after the intersections have been handled More...

template<typename IG , typename LFSU , typename X , typename LFSV , typename M >
void	jacobian_skeleton (const IG &ig, const LFSU &lfsu_s, const X &x_s, const LFSV &lfsv_s, const LFSU &lfsu_n, const X &x_n, const LFSV &lfsv_n, M &mat_ss, M &mat_sn, M &mat_ns, M &mat_nn) const
	apply an internal intersections's jacobians More...

template<typename IG , typename LFSU , typename X , typename LFSV , typename M >
void	jacobian_boundary (const IG &ig, const LFSU &lfsu_s, const X &x_s, const LFSV &lfsv_s, M &mat_ss) const
	get a boundary intersections's jacobian More...

Detailed Description

template<typename Backend, typename Factor, typename Time = double>
class Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >

A local operator that scales the result of another local operator.

This local operator takes another local operator as a backend and a scaling factor. It forwards calls to the evaluation methods to the backend local operator, but scales the result by the scaling factor before returning it. Calls to the instationary methods setTime() et. al. are forwarded as well, without modification to the behaviour.

If the scaling factor equal zero, calls to the evaluation methods of the backend operator are eliminated at run time. Note that "equals zero" is determined by the expression factor==0, so if you have values that are nearly zero and you want them to be treated as zero, you should force the factor to zero yourself before passing it to this class.

Template Parameters

Backend	Type of the backend operator.
Factor	Type of the scaling factor.
Time	Type of time values.

Constructor & Destructor Documentation

◆ ScaledLocalOperator() [1/2]

template<typename Backend , typename Factor , typename Time = double>

Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::ScaledLocalOperator	(	Backend &	backend,
		Factor	factor_ = `0`
	)

inline

construct a ScaledLocalOperator

Parameters

backend	Reference to the backend local operator
factor_	Scaling factor

◆ ScaledLocalOperator() [2/2]

template<typename Backend , typename Factor , typename Time = double>

Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::ScaledLocalOperator ( Factor factor_ = 0 )

inline

construct a ScaledLocalOperator

Note: This constructor does not set a backend local operator – you must call setBackend() before you can use this object

Parameters

factor_ Scaling factor

Member Function Documentation

◆ alpha_boundary()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSU , typename X , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::alpha_boundary	(	const IG &	ig,
		const LFSU &	lfsu_s,
		const X &	x_s,
		const LFSV &	lfsv_s,
		R &	r_s
	)		const

inline

get a boundary intersections's contribution to alpha

Parameters

ig	IntersectionGeometry describing the intersection.
lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
x_s	Local position in the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
r_s	Local part of the residual in the inside entity.

Note: It is permissible to include contributions of the residual which are independent of x_s here (they have to be omitted from lambda_boundary() in that case, of course). This is the difference to jacobian_apply_boundary().; x_s and r_s are of type std::vector.; The method should not clear r_s; it should just add its entries to it.

This method is controlled by the flag doAlphaBoundary. For a given element, it's calls happen intermingled with the calls to alpha_skeleton(), but after the call to alpha_volume() and before the call to alpha_volume_post_skeleton().

◆ alpha_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSU , typename X , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::alpha_skeleton	(	const IG &	ig,
		const LFSU &	lfsu_s,
		const X &	x_s,
		const LFSV &	lfsv_s,
		const LFSU &	lfsu_n,
		const X &	x_n,
		const LFSV &	lfsv_n,
		R &	r_s,
		R &	r_n
	)		const

inline

get an internal intersections's contribution to alpha

Parameters

ig	IntersectionGeometry describing the intersection.
lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
x_s	Local position in the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
lfsu_n	LocalFunctionSpace of the trial GridFunctionSpace in the outside entity.
x_n	Local position in the trial GridFunctionSpace in the outside entity.
lfsv_n	LocalFunctionSpace of the test GridFunctionSpace in the outside entity.
r_s	Local part of the residual in the inside entity.
r_n	Local part of the residual in the outside entity.

Note: It is permissible to include contributions of the residual which are independent of x_s and x_n here (they have to be omitted from lambda_skeleton() in that case, of course). This is the difference to jacobian_apply_skeleton().; x_s, x_n, r_s and r_n are of type std::vector.; The method should not clear r_s and r_n; it should just add its entries to them.

This method is controlled by the flag doAlphaSkeleton. For a given element, it's calls happen intermingled with the calls to alpha_boundary(), but after the call to alpha_volume() and before the call to alpha_volume_post_skeleton().

◆ alpha_volume()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSU , typename X , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::alpha_volume	(	const EG &	eg,
		const LFSU &	lfsu,
		const X &	x,
		const LFSV &	lfsv,
		R &	r
	)		const

inline

get an element's contribution to alpha

Parameters

eg	ElementGeometry describing the entity.
lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
x	Local position in the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
r	Local part of the residual.

Note: It is permissible to include contributions of the residual which are independent of x here (they have to be omitted from lambda_volume() in that case, of course). This is the difference to jacobian_apply_volume().; x and r are of type std::vector.; The method should not clear r; it should just add its entries to it.

This method is controlled by the flag doAlphaVolume. For a given element, it is called before the alpha_skeleton() and/or alpha_boundary() methods are called (if they are called at all).

◆ alpha_volume_post_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSU , typename X , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::alpha_volume_post_skeleton	(	const EG &	eg,
		const LFSU &	lfsu,
		const X &	x,
		const LFSV &	lfsv,
		R &	r
	)		const

inline

get an element's contribution to alpha after the intersections have been handled

Parameters

eg	ElementGeometry describing the entity.
lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
x	Local position in the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
r	Local part of the residual.

Note: It is permissible to include contributions of the residual which are independent of x here (they have to be omitted from lambda_volume_post_skeleton() in that case, of course). This is the difference to jacobian_apply_volume_post_skeleton().; x and r are of type std::vector.; The method should not clear r; it should just add its entries to it.

This method is controlled by the flag doAlphaVolumePostSkeleton. For a given element, it is called after the alpha_skeleton() and/or alpha_boundary() methods are called (if they are called at all).

◆ getStage()

template<typename Backend , typename Factor , typename Time = double>

int Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::getStage ( ) const

inline

get current stage

Returns: The current stage number previously set by preStage().

◆ getTime()

template<typename Backend , typename Factor , typename Time = double>

Time Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::getTime ( ) const

inline

get current time

Returns: The time previously set by setTime().

◆ jacobian_apply_boundary()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSU , typename X , typename LFSV , typename Y >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_apply_boundary	(	const IG &	ig,
		const LFSU &	lfsu_s,
		const X &	x_s,
		const LFSV &	lfsv_s,
		Y &	y_s
	)		const

inline

apply a boundary intersections's jacobian

Parameters

ig	IntersectionGeometry describing the intersection.
lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
x_s	Local position in the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
y_s	Local part of the residual in the inside entity.

Note: This is different from alpha_boundary(), since the result will be linear in x, whereas alpha_boundary() may include contributions to the the residual which are constant in x.; x_s and y_s are of type std::vector.; The method should not clear y_s; it should just add its entries to it.; x_s is both the position where the jacobian is evaluated (for non-linear problems) as well as the vector the jacobian is applied to.

This method is controlled by the flag doAlphaBoundary. For a given element, it's calls happen intermingled with the calls to jacobian_apply_skeleton(), but after the call to jacobian_apply_volume() and before the call to jacobian_apply_volume_post_skeleton().

◆ jacobian_apply_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSU , typename X , typename LFSV , typename Y >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_apply_skeleton	(	const IG &	ig,
		const LFSU &	lfsu_s,
		const X &	x_s,
		const LFSV &	lfsv_s,
		const LFSU &	lfsu_n,
		const X &	x_n,
		const LFSV &	lfsv_n,
		Y &	y_s,
		Y &	y_n
	)		const

inline

apply an internal intersections's jacobians

Parameters

ig	IntersectionGeometry describing the intersection.
lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
x_s	Local position in the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
lfsu_n	LocalFunctionSpace of the trial GridFunctionSpace in the outside entity.
x_n	Local position in the trial GridFunctionSpace in the outside entity.
lfsv_n	LocalFunctionSpace of the test GridFunctionSpace in the outside entity.
y_s	Where to store the inside entity's result.
y_n	Where to store the outside entity's result.

Note: This is different from alpha_skeleton(), since the result will be linear in x_s and x_n, whereas alpha_skeleton() may include contributions to the the residual which are constant in x_s and x_n.; x_s, x_n, y_s and y_n are of type std::vector.; The method should not clear y_s and y_n; it should just add its entries to them.; x_s and x_n are both the positions where the jacobian is evaluated (for non-linear problems) as well as the vectors the jacobian is applied to.

This method is controlled by the flag doAlphaSkeleton. For a given element, it's calls happen intermingled with the calls to jacobian_apply_boundary(), but after the call to jacobian_apply_volume() and before the call to jacobian_apply_volume_post_skeleton().

◆ jacobian_apply_volume()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSU , typename X , typename LFSV , typename Y >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_apply_volume	(	const EG &	eg,
		const LFSU &	lfsu,
		const X &	x,
		const LFSV &	lfsv,
		Y &	y
	)		const

inline

apply an element's jacobian

Parameters

eg	ElementGeometry describing the entity.
lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
x	Local position in the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
y	Where to store the result.

Note: This is different from alpha_volume(), since the result will be linear in x, whereas alpha_volume() may include contributions to the the residual which are constant in x.; x and y are of type std::vector.; The method should not clear y; it should just add its entries to it.; x is both the position where the jacobian is evaluated (for non-linear problems) as well as the vector the jacobian is applied to.

This method is controlled by the flag doAlphaVolume. For a given element, it is called before the jacobian_apply_skeleton() and/or jacobian_apply_boundary() methods are called (if they are called at all).

◆ jacobian_apply_volume_post_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSU , typename X , typename LFSV , typename Y >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_apply_volume_post_skeleton	(	const EG &	eg,
		const LFSU &	lfsu,
		const X &	x,
		const LFSV &	lfsv,
		Y &	y
	)		const

inline

apply an element's jacobian after the intersections have been handled

Parameters

eg	ElementGeometry describing the entity.
lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
x	Local position in the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
y	Where to store the result.

Note: This is different from alpha_volume_post_skeleton(), since the result will be linear in x, whereas alpha_volume_post_skeleton() may include contributions to the the residual which are constant in x.; x and y are of type std::vector.; The method should not clear y; it should just add its entries to it.; x is both the position where the jacobian is evaluated (for non-linear problems) as well as the vector the jacobian is applied to.

This method is controlled by the flag doAlphaVolumePostSkeleton. For a given element, it is called after the jacobian_apply_skeleton() and/or jacobian_apply_boundary() methods are called (if they are called at all).

◆ jacobian_boundary()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSU , typename X , typename LFSV , typename M >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_boundary	(	const IG &	ig,
		const LFSU &	lfsu_s,
		const X &	x_s,
		const LFSV &	lfsv_s,
		M &	mat_ss
	)		const

inline

get a boundary intersections's jacobian

Parameters

ig	IntersectionGeometry describing the intersection.
lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
x_s	Local position in the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
mat_ss	Where to store the contribution to the inside entity's jacobian.

Note: x_s is of type std::vector.; The method should not clear mat_ss; it should just add its entries to it.

This method is controlled by the flag doAlphaBoundary. For a given element, it's calls happen intermingled with the calls to jacobian_skeleton(), but after the call to jacobian_volume() and before the call to jacobian_volume_post_skeleton().

◆ jacobian_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSU , typename X , typename LFSV , typename M >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_skeleton	(	const IG &	ig,
		const LFSU &	lfsu_s,
		const X &	x_s,
		const LFSV &	lfsv_s,
		const LFSU &	lfsu_n,
		const X &	x_n,
		const LFSV &	lfsv_n,
		M &	mat_ss,
		M &	mat_sn,
		M &	mat_ns,
		M &	mat_nn
	)		const

inline

apply an internal intersections's jacobians

Parameters

ig	IntersectionGeometry describing the intersection.
lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
x_s	Local position in the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
lfsu_n	LocalFunctionSpace of the trial GridFunctionSpace in the outside entity.
x_n	Local position in the trial GridFunctionSpace in the outside entity.
lfsv_n	LocalFunctionSpace of the test GridFunctionSpace in the outside entity.
mat_ss	Where to store the contribution to the inside entity's jacobian.
mat_sn	Where to store the contribution to the interaction jacobian between the inside and the outside entity.
mat_ns	Where to store the contribution to the interaction jacobian between the outside and the inside entity.
mat_nn	Where to store the contribution to the outside entity's jacobian.

Note: x_s and x_n are of type std::vector.; The method should not clear mat_ss, mat_sn, mat_ns, mat_nn; it should just add its entries to them.

This method is controlled by the flag doAlphaSkeleton. For a given element, it's calls happen intermingled with the calls to jacobian_boundary(), but after the call to jacobian_volume() and before the call to jacobian_volume_post_skeleton().

◆ jacobian_volume()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSU , typename X , typename LFSV , typename M >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_volume	(	const EG &	eg,
		const LFSU &	lfsu,
		const X &	x,
		const LFSV &	lfsv,
		M &	mat
	)		const

inline

get an element's jacobian

Parameters

eg	ElementGeometry describing the entity.
lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
x	Local position in the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
mat	Where to store the contribution to the jacobian.

Note: x is of type std::vector.; The method should not clear mat; it should just add its entries to it.

This method is controlled by the flag doAlphaVolume. For a given element, it is called before the jacobian_skeleton() and/or jacobian_boundary() methods are called (if they are called at all).

◆ jacobian_volume_post_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSU , typename X , typename LFSV , typename M >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::jacobian_volume_post_skeleton	(	const EG &	eg,
		const LFSU &	lfsu,
		const X &	x,
		const LFSV &	lfsv,
		M &	mat
	)		const

inline

get an element's jacobian after the intersections have been handled

Parameters

eg	ElementGeometry describing the entity.
lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
x	Local position in the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
mat	Where to store the contribution to the jacobian.

Note: x is of type std::vector.; The method should not clear mat; it should just add its entries to it.

This method is controlled by the flag doAlphaVolumePostSkeleton. For a given element, it is called after the jacobian_skeleton() and/or jacobian_boundary() methods are called (if they are called at all).

◆ lambda_boundary()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::lambda_boundary	(	const IG &	ig,
		const LFSV &	lfsv_s,
		R &	r_s
	)		const

inline

get a boundary intersections's contribution to lambda

Parameters

ig	IntersectionGeometry describing the intersection. inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
r_s	Local part of the residual in the inside entity.

Note: r_s is of type std::vector.; The method should not clear r_s; it should just add its entries to it.

This method is controlled by the flag doLambdaBoundary. For a given element, it's calls happen intermingled with the calls to lambda_skeleton(), but after the call to lambda_volume() and before the call to lambda_volume_post_skeleton().

◆ lambda_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename IG , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::lambda_skeleton	(	const IG &	ig,
		const LFSV &	lfsv_s,
		const LFSV &	lfsv_n,
		R &	r_s,
		R &	r_n
	)		const

inline

get an internal intersections's contribution to lambda

Parameters

ig	IntersectionGeometry describing the intersection. inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
lfsv_n	LocalFunctionSpace of the test GridFunctionSpace in the outside entity.
r_s	Local part of the residual in the inside entity.
r_n	Local part of the residual in the outside entity.

Note: r_s and r_n are of type std::vector.; The method should not clear r_s and r_n; it should just add its entries to them.

This method is controlled by the flag doLambdaSkeleton. For a given element, it's calls happen intermingled with the calls to lambda_boundary(), but after the call to lambda_volume() and before the call to lambda_volume_post_skeleton().

◆ lambda_volume()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::lambda_volume	(	const EG &	eg,
		const LFSV &	lfsv,
		R &	r
	)		const

inline

get an element's contribution to lambda

Parameters

eg	ElementGeometry describing the entity.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
r	Local part of the residual.

Note: r is of type std::vector.; The method should not clear r; it should just add its entries to it.

This method is controlled by the flag doLambdaVolume. For a given element, it is called before the lambda_skeleton() and/or lambda_boundary() methods are called (if they are called at all).

◆ lambda_volume_post_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename EG , typename LFSV , typename R >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::lambda_volume_post_skeleton	(	const EG &	eg,
		const LFSV &	lfsv,
		R &	r
	)		const

inline

get an element's contribution to lambda after the intersections have been handled

Parameters

eg	ElementGeometry describing the entity.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
r	Local part of the residual.

Note: r is of type std::vector.; The method should not clear r; it should just add its entries to it.

This method is controlled by the flag doLambdaVolumePostSkeleton. For a given element, it is called after the lambda_skeleton() and/or lambda_boundary() methods are called (if they are called at all).

◆ pattern_boundary()

template<typename Backend , typename Factor , typename Time = double>

template<typename LFSU , typename LFSV , typename LocalPattern >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::pattern_boundary	(	const LFSU &	lfsu_s,
		const LFSV &	lfsv_s,
		LocalPattern &	pattern_ss
	)		const

inline

get a boundary intersection's contribution to the sparsity pattern

Parameters

lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
pattern_ss	Local sparsity pattern for the inside entity.

Note: The method should not clear the pattern; it should just add its entries to it.

This method is controlled by the flag doPatternBoundary. For a given element, it's calls happen intermingled with the calls to pattern_skeleton(), but after the call to pattern_volume() and before the call to pattern_volume_post_skeleton().

◆ pattern_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename LFSU , typename LFSV , typename LocalPattern >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::pattern_skeleton	(	const LFSU &	lfsu_s,
		const LFSV &	lfsv_s,
		const LFSU &	lfsu_n,
		const LFSV &	lfsv_n,
		LocalPattern &	pattern_sn,
		LocalPattern &	pattern_ns
	)		const

inline

get an internal intersection's contribution to the sparsity pattern

Parameters

lfsu_s	LocalFunctionSpace of the trial GridFunctionSpace in the inside entity.
lfsv_s	LocalFunctionSpace of the test GridFunctionSpace in the inside entity.
lfsu_n	LocalFunctionSpace of the trial GridFunctionSpace in the outside entity.
lfsv_n	LocalFunctionSpace of the test GridFunctionSpace in the outside entity.
pattern_sn	Local sparsity pattern.
pattern_ns	Local sparsity pattern.

Note: The method should not clear the patterns; it should just add its entries to them.

This method is controlled by the flag doPatternSkeleton. For a given element, it's calls happen intermingled with the calls to pattern_boundary(), but after the call to pattern_volume() and before the call to pattern_volume_post_skeleton().

◆ pattern_volume()

template<typename Backend , typename Factor , typename Time = double>

template<typename LFSU , typename LFSV , typename LocalPattern >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::pattern_volume	(	const LFSU &	lfsu,
		const LFSV &	lfsv,
		LocalPattern &	pattern
	)		const

inline

get an element's contribution to the sparsity pattern

Parameters

lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
pattern	Local sparsity pattern.

Note: The method should not clear the pattern; it should just add its entries to it.

This method is controlled by the flag doPatternVolume. For a given element, it is called before the pattern_skeleton() and/or pattern_boundary() methods are called (if they are called at all).

◆ pattern_volume_post_skeleton()

template<typename Backend , typename Factor , typename Time = double>

template<typename LFSU , typename LFSV , typename LocalPattern >

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::pattern_volume_post_skeleton	(	const LFSU &	lfsu,
		const LFSV &	lfsv,
		LocalPattern &	pattern
	)		const

inline

get an element's contribution to the sparsity pattern after the intersections have been handled

Parameters

lfsu	LocalFunctionSpace of the trial GridFunctionSpace.
lfsv	LocalFunctionSpace of the test GridFunctionSpace.
pattern	Local sparsity pattern.

Note: The method should not clear the pattern; it should just add its entries to it.

This method is controlled by the flag doPatternVolume. For a given element, it is called before the pattern_skeleton() and/or pattern_boundary() methods are called (if they are called at all).

◆ postStep()

template<typename Backend , typename Factor , typename Time = double>

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::postStep ( )

inline

to be called once at the end of each time step

Note: With the OneStepMethod and the ExplicitOneStepMetod, for reasons unknown this is only called for temporal but not for spatial local operators. With the MultiStepMethod this is called for all local operators.

◆ preStage()

template<typename Backend , typename Factor , typename Time = double>

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::preStage	(	Time	time,
		int	r
	)

inline

to be called once before each stage

Parameters

time	Time of the stage
r	Number of the stage, r ∈ [1, nstages] inclusive, where nstages is the number of stage in the step given in the previous call to preStep()

Note: For ExplicitOneStepMethod the time given here for stage 1 may be incorrect, since the time step size is only finally determined after the first stage has been assembled.; For the MultiStepMethod, this is called once after preStep() with r=1.

◆ preStep()

template<typename Backend , typename Factor , typename Time = double>

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::preStep	(	Time	time,
		Time	dt,
		int	stages
	)

inline

to be called once before each time step

Parameters

time	Time at beginning of the step.
dt	Size of time step.
stages	Number of stages to do in the step. For the MultiStepMethod this is always 1.

Note: For ExplicitOneStepMethod the dt given here may be incorrect, since the time step size is only finally determined after the first stage has been assembled.; For the MultiStepMethod the number of stages is given as 1. There are no since there are no times of evaluation in the middle of the step, a multi-step method is similar to a one step method with one stage.

◆ setTime()

template<typename Backend , typename Factor , typename Time = double>

void Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::setTime ( Time t )

inline

set time for subsequent evaluation

This method set the time for subsequent calls to the alpha_*(), lambda_*(), jacobian_*() and jacobian_apply_*() methods.

Note: For ExplicitOneStepMethod the time given here in the first stage may be incorrect, since the time step size is only finally determined after the first stage has been assembled.

◆ suggestTimestep()

template<typename Backend , typename Factor , typename Time = double>

Time Dune::PDELab::ScaledLocalOperator< Backend, Factor, Time >::suggestTimestep ( Time dt ) const

inline

to be called after stage 1

Note: Only used by the ExplicitOneStepMethod.

This may be called on the spatial local operator in the case of an explicit one step scheme. It is called after stage 1 has been assembled (so the time given to preStep() may not apply anymore in this case). All the alpha_*() and lambda_*() methods should have been called, so they are a good place to generate the information returned here.

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

dune/pdelab/localoperator/scaled.hh

Control flags

Methods for temporal local operators

Construction and modification

Methods for the sparsity pattern

Methods for the residual – non-constant parts

Methods for the residual – constant parts

Methods for the application of the jacobian

Methods to extract the jacobian

Detailed Description

Constructor & Destructor Documentation

◆ ScaledLocalOperator() [1/2]

◆ ScaledLocalOperator() [2/2]

Member Function Documentation

◆ alpha_boundary()

◆ alpha_skeleton()

◆ alpha_volume()

◆ alpha_volume_post_skeleton()

◆ getStage()

◆ getTime()

◆ jacobian_apply_boundary()

◆ jacobian_apply_skeleton()

◆ jacobian_apply_volume()

◆ jacobian_apply_volume_post_skeleton()

◆ jacobian_boundary()

◆ jacobian_skeleton()

◆ jacobian_volume()

◆ jacobian_volume_post_skeleton()

◆ lambda_boundary()

◆ lambda_skeleton()

◆ lambda_volume()

◆ lambda_volume_post_skeleton()

◆ pattern_boundary()

◆ pattern_skeleton()

◆ pattern_volume()

◆ pattern_volume_post_skeleton()

◆ postStep()

◆ preStage()

◆ preStep()

◆ setTime()

◆ suggestTimestep()