#include <deal.II/matrix_free/mapping_info.h>

Classes
struct	CellData

struct	MappingInfoDependent

Public Member Functions
	MappingInfo ()

void	initialize (const ::Triangulation< dim > &tria, const std::vector< std::pair< unsigned int, unsigned int > > &cells, const std::vector< unsigned int > &active_fe_index, const Mapping< dim > &mapping, const std::vector<::hp::QCollection< 1 > > &quad, const UpdateFlags update_flags)

CellType	get_cell_type (const unsigned int cell_chunk_no) const

unsigned int	get_cell_data_index (const unsigned int cell_chunk_no) const

void	clear ()

std::size_t	memory_consumption () const

template<typename StreamType >
void	print_memory_consumption (StreamType &out, const SizeInfo &size_info) const

void	evaluate_on_cell (const ::Triangulation< dim > &tria, const std::pair< unsigned int, unsigned int > *cells, const unsigned int cell, const unsigned int my_q, CellType(&cell_t_prev)[n_vector_elements], CellType(&cell_t)[n_vector_elements], ::FEValues< dim, dim > &fe_values, CellData &cell_data) const

Static Public Member Functions
static UpdateFlags	compute_update_flags (const UpdateFlags update_flags, const std::vector<::hp::QCollection< 1 > > &quad=std::vector<::hp::QCollection< 1 > >())

Public Attributes
std::vector< unsigned int >	cell_type

AlignedVector< std::pair< Tensor< 1, dim, VectorizedArray< Number > >, VectorizedArray< Number > > >	cartesian_data

AlignedVector< std::pair< Tensor< 2, dim, VectorizedArray< Number > >, VectorizedArray< Number > > >	affine_data

std::vector< MappingInfoDependent >	mapping_data_gen

bool	JxW_values_initialized

bool	second_derivatives_initialized

bool	quadrature_points_initialized

Static Public Attributes
static const std::size_t	n_cell_type_bits = 2

static const unsigned int	n_cell_types = 1U<<n_cell_type_bits

static const unsigned int	n_vector_elements = VectorizedArray<Number>::n_array_elements

Detailed Description

template<int dim, typename Number>
struct internal::MatrixFreeFunctions::MappingInfo< dim, Number >

The class that stores all geometry-dependent data related with cell interiors for use in the matrix-free class.

Author: Katharina Kormann and Martin Kronbichler, 2010, 2011

Definition at line 46 of file mapping_info.h.

Constructor & Destructor Documentation

◆ MappingInfo()

template<int dim, typename Number>

internal::MatrixFreeFunctions::MappingInfo< dim, Number >::MappingInfo ( )

Empty constructor.

Member Function Documentation

◆ initialize()

template<int dim, typename Number>

void internal::MatrixFreeFunctions::MappingInfo< dim, Number >::initialize	(	const ::Triangulation< dim > &	tria,
		const std::vector< std::pair< unsigned int, unsigned int > > &	cells,
		const std::vector< unsigned int > &	active_fe_index,
		const Mapping< dim > &	mapping,
		const std::vector<::hp::QCollection< 1 > > &	quad,
		const UpdateFlags	update_flags
	)

Compute the information in the given cells. The cells are specified by the level and the index within the level (as given by CellIterator::level() and CellIterator::index(), in order to allow for different kinds of iterators, e.g. standard DoFHandler, multigrid, etc.) on a fixed Triangulation. In addition, a mapping and several quadrature formulas are given.

◆ compute_update_flags()

template<int dim, typename Number>

static UpdateFlags internal::MatrixFreeFunctions::MappingInfo< dim, Number >::compute_update_flags	(	const UpdateFlags	update_flags,
		const std::vector<::hp::QCollection< 1 > > &	quad = `std::vector<::hp::QCollection< 1 > >()`
	)

static

Helper function to determine which update flags must be set in the internal functions to initialize all data as requested by the user.

◆ get_cell_type()

template<int dim, typename Number >

CellType internal::MatrixFreeFunctions::MappingInfo< dim, Number >::get_cell_type ( const unsigned int cell_chunk_no ) const

inline

Return the type of a given cell as detected during initialization.

Definition at line 356 of file mapping_info.h.

◆ get_cell_data_index()

template<int dim, typename Number >

unsigned int internal::MatrixFreeFunctions::MappingInfo< dim, Number >::get_cell_data_index ( const unsigned int cell_chunk_no ) const

inline

Return the type of a given cell as detected during initialization.

Definition at line 369 of file mapping_info.h.

◆ clear()

template<int dim, typename Number>

void internal::MatrixFreeFunctions::MappingInfo< dim, Number >::clear ( )

Clear all data fields in this class.

◆ memory_consumption()

template<int dim, typename Number>

std::size_t internal::MatrixFreeFunctions::MappingInfo< dim, Number >::memory_consumption ( ) const

Return the memory consumption of this class in bytes.

◆ print_memory_consumption()

template<int dim, typename Number>

template<typename StreamType >

void internal::MatrixFreeFunctions::MappingInfo< dim, Number >::print_memory_consumption	(	StreamType &	out,
		const SizeInfo &	size_info
	)		const

Prints a detailed summary of memory consumption in the different structures of this class to the given output stream.

◆ evaluate_on_cell()

template<int dim, typename Number>

void internal::MatrixFreeFunctions::MappingInfo< dim, Number >::evaluate_on_cell	(	const ::Triangulation< dim > &	tria,
		const std::pair< unsigned int, unsigned int > *	cells,
		const unsigned int	cell,
		const unsigned int	my_q,
		CellType(&)	cell_t_prev[n_vector_elements],
		CellType(&)	cell_t[n_vector_elements],
		::FEValues< dim, dim > &	fe_values,
		CellData &	cell_data
	)		const

Helper function called internally during the initialize function.

Member Data Documentation

◆ n_cell_type_bits

template<int dim, typename Number>

const std::size_t internal::MatrixFreeFunctions::MappingInfo< dim, Number >::n_cell_type_bits = 2

static

Determines how many bits of an unsigned int are used to distinguish the cell types (Cartesian, with constant Jacobian, or general)

Definition at line 52 of file mapping_info.h.

◆ n_cell_types

template<int dim, typename Number>

const unsigned int internal::MatrixFreeFunctions::MappingInfo< dim, Number >::n_cell_types = 1U<<n_cell_type_bits

static

Determines how many types of different cells can be detected at most. Corresponds to the number of bits we reserved for it.

Definition at line 58 of file mapping_info.h.

◆ n_vector_elements

template<int dim, typename Number>

const unsigned int internal::MatrixFreeFunctions::MappingInfo< dim, Number >::n_vector_elements = VectorizedArray<Number>::n_array_elements

static

An abbreviation for the length of vector lines of the current data type.

Definition at line 64 of file mapping_info.h.

◆ cell_type

template<int dim, typename Number>

std::vector<unsigned int> internal::MatrixFreeFunctions::MappingInfo< dim, Number >::cell_type

Stores whether a cell is Cartesian, has constant transform data (Jacobians) or is general. cell_type % 4 gives this information (0: Cartesian, 1: constant Jacobian throughout cell, 2: general cell), and cell_type / 4 gives the index in the data field of where to find the information in the fields Jacobian and JxW values (except for quadrature points, for which the index runs as usual).

Definition at line 131 of file mapping_info.h.

◆ cartesian_data

template<int dim, typename Number>

AlignedVector<std::pair<Tensor<1,dim,VectorizedArray<Number> >, VectorizedArray<Number> > > internal::MatrixFreeFunctions::MappingInfo< dim, Number >::cartesian_data

The first field stores the inverse Jacobian for Cartesian cells: There, it is a diagonal rank-2 tensor, so we actually just store a rank-1 tensor. It is the same on all cells, therefore we only store it once per cell, and use similarities from one cell to another, too (on structured meshes, there are usually many cells with the same Jacobian).

The second field stores the Jacobian determinant for Cartesian cells (without the quadrature weight, which depends on the quadrature point, whereas the determinant is the same on each quadrature point).

Definition at line 146 of file mapping_info.h.

◆ affine_data

template<int dim, typename Number>

AlignedVector<std::pair<Tensor<2,dim,VectorizedArray<Number> >, VectorizedArray<Number> > > internal::MatrixFreeFunctions::MappingInfo< dim, Number >::affine_data

The first field stores the Jacobian for non-Cartesian cells where all the Jacobians on the cell are the same (i.e., constant, which comes from a linear transformation from unit to real cell). Also use similarities from one cell to another (on structured meshes, there are usually many cells with the same Jacobian).

The second field stores the Jacobian determinant for non-Cartesian cells with constant Jacobian throughout the cell (without the quadrature weight, which depends on the quadrature point, whereas the determinant is the same on each quadrature point).

Definition at line 161 of file mapping_info.h.

◆ mapping_data_gen

template<int dim, typename Number>

std::vector<MappingInfoDependent> internal::MatrixFreeFunctions::MappingInfo< dim, Number >::mapping_data_gen

Contains all the stuff that depends on the quadrature formula

Definition at line 290 of file mapping_info.h.

◆ JxW_values_initialized

template<int dim, typename Number>

bool internal::MatrixFreeFunctions::MappingInfo< dim, Number >::JxW_values_initialized

Stores whether JxW values have been initialized

Definition at line 295 of file mapping_info.h.

◆ second_derivatives_initialized

template<int dim, typename Number>

bool internal::MatrixFreeFunctions::MappingInfo< dim, Number >::second_derivatives_initialized

Stores whether we computed second derivatives.

Definition at line 300 of file mapping_info.h.

◆ quadrature_points_initialized

template<int dim, typename Number>

bool internal::MatrixFreeFunctions::MappingInfo< dim, Number >::quadrature_points_initialized

Stores whether we computed quadrature points.

Definition at line 305 of file mapping_info.h.

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

deal.II/matrix_free/mapping_info.h

Classes

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Detailed Description

template<int dim, typename Number> struct internal::MatrixFreeFunctions::MappingInfo< dim, Number >

Constructor & Destructor Documentation

◆ MappingInfo()

Member Function Documentation

◆ initialize()

◆ compute_update_flags()

◆ get_cell_type()

◆ get_cell_data_index()

◆ clear()

◆ memory_consumption()

◆ print_memory_consumption()

◆ evaluate_on_cell()

Member Data Documentation

◆ n_cell_type_bits

◆ n_cell_types

◆ n_vector_elements

◆ cell_type

◆ cartesian_data

◆ affine_data

◆ mapping_data_gen

◆ JxW_values_initialized

◆ second_derivatives_initialized

◆ quadrature_points_initialized

template<int dim, typename Number>
struct internal::MatrixFreeFunctions::MappingInfo< dim, Number >