Class to compute face normal derivatives (in reference coordinate) of an L2 grid function (used internally by L2FaceRestriction). More...

Collaboration diagram for mfem::L2NormalDerivativeFaceRestriction:

Public Member Functions
	L2NormalDerivativeFaceRestriction (const FiniteElementSpace &fes_, const ElementDofOrdering f_ordering, const FaceType face_type_)
	Constructor.

void	Mult (const Vector &x, Vector &y) const
	Computes the normal derivatives on the face_type faces of the mesh.

void	AddMultTranspose (const Vector &x, Vector &y, const real_t a=1.0) const
	Computes the transpose of the action of Mult(), accumulating into y with coefficient a.

Internal compute kernels. Public because of nvcc restriction.
template<int T_D1D = 0>
void	Mult2D (const Vector &x, Vector &y) const

template<int T_D1D = 0>
void	AddMultTranspose2D (const Vector &x, Vector &y, const real_t a) const

template<int T_D1D = 0>
void	Mult3D (const Vector &x, Vector &y) const

template<int T_D1D = 0>
void	AddMultTranspose3D (const Vector &x, Vector &y, const real_t a) const

Protected Attributes
const FiniteElementSpace &	fes
	The L2 finite element space.

const FaceType	face_type
	Face type: either boundary or interior.

const int	dim
	Dimension of the mesh.

const int	nf
	Number of faces of the given face_type.

const int	ne
	Number of elements.

int	ne_type
	Number of elements with faces of type face type.

Array< int >	face_to_elem
	Face-wise information array.

Array< int >	elem_to_face
	Element-wise information array.

Array< int >	face_to_vol
	maps face index to volume index

Detailed Description

Class to compute face normal derivatives (in reference coordinate) of an L2 grid function (used internally by L2FaceRestriction).

Constructor & Destructor Documentation

mfem::L2NormalDerivativeFaceRestriction::L2NormalDerivativeFaceRestriction	(	const FiniteElementSpace &	fes_,
		const ElementDofOrdering	f_ordering,
		const FaceType	face_type_ )

Constructor.

Parameters

[in]	fes_	The associated FiniteElementSpace (should be L2/DG).
[in]	f_ordering	Request a specific face dof ordering. Currently only ElementDofOrdering::LEXICOGRAPHIC is supported.
[in]	face_type_	Type of faces to compute restriction (interior or boundary).

void mfem::L2NormalDerivativeFaceRestriction::AddMultTranspose	(	const Vector &	x,
		Vector &	y,
		const real_t	a = 1.0 ) const

Computes the transpose of the action of Mult(), accumulating into y with coefficient a.

Parameters

x	Face E-vector layout (face_dofs x vdim x 2 x nf).
y	L-vector layout.
a	Optional coefficient (y = y + aR^tx)

template<int T_D1D>

void mfem::L2NormalDerivativeFaceRestriction::AddMultTranspose2D	(	const Vector &	x,
		Vector &	y,
		const real_t	a ) const

template<int T_D1D>

void mfem::L2NormalDerivativeFaceRestriction::AddMultTranspose3D	(	const Vector &	x,
		Vector &	y,
		const real_t	a ) const

void mfem::L2NormalDerivativeFaceRestriction::Mult	(	const Vector &	x,
		Vector &	y ) const

Computes the normal derivatives on the face_type faces of the mesh.

Parameters

[in]	x	The L-vector degrees of freedom.
[out]	y	The face E(like)-vector degrees of freedom of the format (face_dofs x vdim x 2 x nf) where nf is the number of faces of type face_type. The face_dofs are ordered according to f_ordering specified in the constructor.