Matrix-free transfer operator between finite element spaces working on true degrees of freedom. More...

#include <transfer.hpp>

Inheritance diagram for mfem::TrueTransferOperator:

Collaboration diagram for mfem::TrueTransferOperator:

Public Member Functions
	TrueTransferOperator (const ParFiniteElementSpace &lFESpace_, const ParFiniteElementSpace &hFESpace_)
	Constructs a transfer operator working on true degrees of freedom from from `lFESpace` to `hFESpace`. More...

	~TrueTransferOperator ()
	Destructor. More...

virtual void	Mult (const Vector &x, Vector &y) const override
	Interpolation or prolongation of a true dof vector `x` to a true dof vector `y`. More...

virtual void	MultTranspose (const Vector &x, Vector &y) const override
	Restriction by applying the transpose of the Mult method. 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 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 *	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...

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, taking in input/output Prolongation matrices. More...

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...

Detailed Description

Matrix-free transfer operator between finite element spaces working on true degrees of freedom.

Definition at line 130 of file transfer.hpp.

Constructor & Destructor Documentation

mfem::TrueTransferOperator::TrueTransferOperator	(	const ParFiniteElementSpace &	lFESpace_,
		const ParFiniteElementSpace &	hFESpace_
	)

Constructs a transfer operator working on true degrees of freedom from from lFESpace to hFESpace.

Definition at line 520 of file transfer.cpp.

mfem::TrueTransferOperator::~TrueTransferOperator ( )

Destructor.

Definition at line 535 of file transfer.cpp.

Member Function Documentation

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

overridevirtual

Interpolation or prolongation of a true dof vector x to a true dof vector y.

The true dof vector x corresponding to the coarse space is restricted to the true dof vector y corresponding to the fine space.

Implements mfem::Operator.

Definition at line 540 of file transfer.cpp.

void mfem::TrueTransferOperator::MultTranspose	(	const Vector &	x,
		Vector &	y
	)		const

overridevirtual

Restriction by applying the transpose of the Mult method.

The true dof vector x corresponding to the fine space is restricted to the true dof vector y corresponding to the coarse space.

Reimplemented from mfem::Operator.

Definition at line 547 of file transfer.cpp.

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

fem/transfer.hpp
fem/transfer.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation