Operator that extracts Face degrees of freedom for H1 FiniteElementSpaces. More...

#include <restriction.hpp>

Inheritance diagram for mfem::H1FaceRestriction:

Collaboration diagram for mfem::H1FaceRestriction:

Public Member Functions
	H1FaceRestriction (const FiniteElementSpace &fes, const ElementDofOrdering ordering, const FaceType type)
	Constructor for a H1FaceRestriction. More...

void	Mult (const Vector &x, Vector &y) const override
	Extract the face degrees of freedom from x into y. More...

void	AddMultTranspose (const Vector &x, Vector &y) const override
	Add the face degrees of freedom x to the element degrees of freedom y. More...

Public Member Functions inherited from mfem::FaceRestriction
	FaceRestriction ()

	FaceRestriction (int h, int w)

virtual	~FaceRestriction ()

void	MultTranspose (const Vector &x, Vector &y) const override
	Set the face degrees of freedom in the element degrees of freedom y to the values given in x. More...

Public Member Functions inherited from mfem::Operator
void	InitTVectors (const Operator Po, const Operator Ri, const Operator *Pi, Vector &x, Vector &b, Vector &X, Vector &B) const
	Initializes memory for true vectors of linear system. More...

	Operator (int s=0)
	Construct a square Operator with given size s (default 0). More...

	Operator (int h, int w)
	Construct an Operator with the given height (output size) and width (input size). More...

int	Height () const
	Get the height (size of output) of the Operator. Synonym with NumRows(). More...

int	NumRows () const
	Get the number of rows (size of output) of the Operator. Synonym with Height(). More...

int	Width () const
	Get the width (size of input) of the Operator. Synonym with NumCols(). More...

int	NumCols () const
	Get the number of columns (size of input) of the Operator. Synonym with Width(). More...

virtual MemoryClass	GetMemoryClass () const
	Return the MemoryClass preferred by the Operator. More...

virtual Operator &	GetGradient (const Vector &x) const
	Evaluate the gradient operator at the point x. The default behavior in class Operator is to generate an error. More...

virtual void	AssembleDiagonal (Vector &diag) const
	Computes the diagonal entries into diag. Typically, this operation only makes sense for linear Operators. In some cases, only an approximation of the diagonal is computed. More...

virtual const Operator *	GetProlongation () const
	Prolongation operator from linear algebra (linear system) vectors, to input vectors for the operator. `NULL` means identity. More...

virtual const Operator *	GetRestriction () const
	Restriction operator from input vectors for the operator to linear algebra (linear system) vectors. `NULL` means identity. More...

virtual const Operator *	GetOutputProlongation () const
	Prolongation operator from linear algebra (linear system) vectors, to output vectors for the operator. `NULL` means identity. More...

virtual const Operator *	GetOutputRestrictionTranspose () const
	Transpose of GetOutputRestriction, directly available in this form to facilitate matrix-free RAP-type operators. More...

virtual const Operator *	GetOutputRestriction () const
	Restriction operator from output vectors for the operator to linear algebra (linear system) vectors. `NULL` means identity. More...

void	FormLinearSystem (const Array< int > &ess_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B, int copy_interior=0)
	Form a constrained linear system using a matrix-free approach. More...

void	FormRectangularLinearSystem (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B)
	Form a column-constrained linear system using a matrix-free approach. More...

virtual void	RecoverFEMSolution (const Vector &X, const Vector &b, Vector &x)
	Reconstruct a solution vector x (e.g. a GridFunction) from the solution X of a constrained linear system obtained from Operator::FormLinearSystem() or Operator::FormRectangularLinearSystem(). More...

void	FormSystemOperator (const Array< int > &ess_tdof_list, Operator *&A)
	Return in A a parallel (on truedofs) version of this square operator. More...

void	FormRectangularSystemOperator (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, Operator *&A)
	Return in A a parallel (on truedofs) version of this rectangular operator (including constraints). More...

void	FormDiscreteOperator (Operator *&A)
	Return in A a parallel (on truedofs) version of this rectangular operator. More...

void	PrintMatlab (std::ostream &out, int n=0, int m=0) const
	Prints operator with input size n and output size m in Matlab format. More...

virtual	~Operator ()
	Virtual destructor. More...

Type	GetType () const
	Return the type ID of the Operator class. More...

Protected Attributes
const FiniteElementSpace &	fes

const int	nf

const int	vdim

const bool	byvdim

const int	ndofs

const int	dof

const int	nfdofs

Array< int >	scatter_indices

Array< int >	offsets

Array< int >	gather_indices

Protected Attributes inherited from mfem::Operator
int	height
	Dimension of the output / number of rows in the matrix. More...

int	width
	Dimension of the input / number of columns in the matrix. More...

Additional Inherited Members
Public Types inherited from mfem::Operator
enum	DiagonalPolicy { DIAG_ZERO, DIAG_ONE, DIAG_KEEP }
	Defines operator diagonal policy upon elimination of rows and/or columns. More...

enum	Type { ANY_TYPE, MFEM_SPARSEMAT, Hypre_ParCSR, PETSC_MATAIJ, PETSC_MATIS, PETSC_MATSHELL, PETSC_MATNEST, PETSC_MATHYPRE, PETSC_MATGENERIC, Complex_Operator, MFEM_ComplexSparseMat, Complex_Hypre_ParCSR }
	Enumeration defining IDs for some classes derived from Operator. More...

Protected Member Functions inherited from mfem::Operator
void	FormConstrainedSystemOperator (const Array< int > &ess_tdof_list, ConstrainedOperator *&Aout)
	see FormSystemOperator() More...

void	FormRectangularConstrainedSystemOperator (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, RectangularConstrainedOperator *&Aout)
	see FormRectangularSystemOperator() More...

Operator *	SetupRAP (const Operator Pi, const Operator Po)
	Returns RAP Operator of this, using input/output Prolongation matrices Pi corresponds to "P", Po corresponds to "Rt". More...

Detailed Description

Operator that extracts Face degrees of freedom for H1 FiniteElementSpaces.

Objects of this type are typically created and owned by FiniteElementSpace objects, see FiniteElementSpace::GetFaceRestriction().

Definition at line 171 of file restriction.hpp.

Constructor & Destructor Documentation

mfem::H1FaceRestriction::H1FaceRestriction	(	const FiniteElementSpace &	fes,
		const ElementDofOrdering	ordering,
		const FaceType	type
	)

Constructor for a H1FaceRestriction.

Parameters

[in]	fes	The FiniteElementSpace on which this H1FaceRestriction operates.
[in]	ordering	The requested output ordering of the H1FaceRestriction, either Native or Lexicographic.
[in]	type	The requested type of faces on which this operator extracts the degrees of freedom, either Interior or Boundary.

Definition at line 663 of file restriction.cpp.

Member Function Documentation

void mfem::H1FaceRestriction::AddMultTranspose	(	const Vector &	x,
		Vector &	y
	)		const

overridevirtual

Add the face degrees of freedom x to the element degrees of freedom y.

Parameters

[in]	x	The face degrees of freedom on the face.
[in,out]	y	The L-vector of degrees of freedom to which we add the face degrees of freedom.

Implements mfem::FaceRestriction.

Definition at line 841 of file restriction.cpp.

void mfem::H1FaceRestriction::Mult	(	const Vector &	x,
		Vector &	y
	)		const

overridevirtual

Extract the face degrees of freedom from x into y.

Parameters

[in]	x	The L-vector of degrees of freedom.
[out]	y	The degrees of freedom on the face, corresponding to a face E-vector.

Implements mfem::FaceRestriction.

Definition at line 820 of file restriction.cpp.

Member Data Documentation

const bool mfem::H1FaceRestriction::byvdim

protected

Definition at line 177 of file restriction.hpp.

const int mfem::H1FaceRestriction::dof

protected

Definition at line 179 of file restriction.hpp.

const FiniteElementSpace& mfem::H1FaceRestriction::fes

protected

Definition at line 174 of file restriction.hpp.

Array<int> mfem::H1FaceRestriction::gather_indices

protected

Definition at line 183 of file restriction.hpp.

const int mfem::H1FaceRestriction::ndofs

protected

Definition at line 178 of file restriction.hpp.

const int mfem::H1FaceRestriction::nf

protected

Definition at line 175 of file restriction.hpp.

const int mfem::H1FaceRestriction::nfdofs

protected

Definition at line 180 of file restriction.hpp.

Array<int> mfem::H1FaceRestriction::offsets

protected

Definition at line 182 of file restriction.hpp.

Array<int> mfem::H1FaceRestriction::scatter_indices

protected

Definition at line 181 of file restriction.hpp.

const int mfem::H1FaceRestriction::vdim

protected

Definition at line 176 of file restriction.hpp.

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

fem/restriction.hpp
fem/restriction.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation