Reference documentation for deal.II version Git 20c3758ecc 2020-10-30 06:09:42 +0100
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Public Member Functions | Public Attributes | List of all members
internal::MatrixFreeFunctions::UnivariateShapeData< Number > Struct Template Reference

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

Inheritance diagram for internal::MatrixFreeFunctions::UnivariateShapeData< Number >:
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Public Member Functions

 UnivariateShapeData ()
 
std::size_t memory_consumption () const
 

Public Attributes

ElementType element_type
 
AlignedVector< Number > shape_values
 
AlignedVector< Number > shape_gradients
 
AlignedVector< Number > shape_hessians
 
AlignedVector< Number > shape_gradients_collocation
 
AlignedVector< Number > shape_hessians_collocation
 
AlignedVector< Number > shape_values_eo
 
AlignedVector< Number > shape_gradients_eo
 
AlignedVector< Number > shape_hessians_eo
 
AlignedVector< Number > shape_gradients_collocation_eo
 
AlignedVector< Number > shape_hessians_collocation_eo
 
AlignedVector< Number > inverse_shape_values
 
AlignedVector< Number > inverse_shape_values_eo
 
std::array< AlignedVector< Number >, 2 > shape_data_on_face
 
std::array< AlignedVector< Number >, 2 > quadrature_data_on_face
 
std::array< AlignedVector< Number >, 2 > values_within_subface
 
std::array< AlignedVector< Number >, 2 > gradients_within_subface
 
std::array< AlignedVector< Number >, 2 > hessians_within_subface
 
Quadrature< 1 > quadrature
 
unsigned int fe_degree
 
unsigned int n_q_points_1d
 
bool nodal_at_cell_boundaries
 

Detailed Description

template<typename Number>
struct internal::MatrixFreeFunctions::UnivariateShapeData< Number >

This struct stores the shape functions, their gradients and Hessians evaluated for a one-dimensional section of a tensor product finite element and tensor product quadrature formula in reference coordinates. This data structure also includes the evaluation of quantities at the cell boundary and on the sub-interval \((0, 0.5)\) and \((0.5, 1)\) for face integrals.

Definition at line 108 of file shape_info.h.

Constructor & Destructor Documentation

◆ UnivariateShapeData()

Empty constructor. Sets default configuration.

Member Function Documentation

◆ memory_consumption()

template<typename Number>
std::size_t internal::MatrixFreeFunctions::UnivariateShapeData< Number >::memory_consumption ( ) const

Return the memory consumption of this class in bytes.

Member Data Documentation

◆ element_type

template<typename Number>
ElementType internal::MatrixFreeFunctions::UnivariateShapeData< Number >::element_type

Encodes the type of element detected at construction. FEEvaluation will select the most efficient algorithm based on the given element type.

Definition at line 126 of file shape_info.h.

◆ shape_values

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_values

Stores the shape values of the 1D finite element evaluated on all 1D quadrature points in vectorized format, i.e., as an array of VectorizedArray<dim>::size equal elements. The length of this array is n_dofs_1d * n_q_points_1d and quadrature points are the index running fastest.

Definition at line 135 of file shape_info.h.

◆ shape_gradients

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_gradients

Stores the shape gradients of the 1D finite element evaluated on all 1D quadrature points in vectorized format, i.e., as an array of VectorizedArray<dim>::size equal elements. The length of this array is n_dofs_1d * n_q_points_1d and quadrature points are the index running fastest.

Definition at line 144 of file shape_info.h.

◆ shape_hessians

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_hessians

Stores the shape Hessians of the 1D finite element evaluated on all 1D quadrature points in vectorized format, i.e., as an array of VectorizedArray<dim>::size equal elements. The length of this array is n_dofs_1d * n_q_points_1d and quadrature points are the index running fastest.

Definition at line 153 of file shape_info.h.

◆ shape_gradients_collocation

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_gradients_collocation

Stores the shape gradients of the shape function space associated to the quadrature (collocation), given by FE_DGQ<1>(Quadrature<1>).

Definition at line 159 of file shape_info.h.

◆ shape_hessians_collocation

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_hessians_collocation

Stores the shape hessians of the shape function space associated to the quadrature (collocation), given by FE_DGQ<1>(Quadrature<1>).

Definition at line 165 of file shape_info.h.

◆ shape_values_eo

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_values_eo

Stores the shape values in a different format, namely the so-called even-odd scheme where the symmetries in shape_values are used for faster evaluation.

Definition at line 172 of file shape_info.h.

◆ shape_gradients_eo

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_gradients_eo

Stores the shape gradients in a different format, namely the so- called even-odd scheme where the symmetries in shape_gradients are used for faster evaluation.

Definition at line 179 of file shape_info.h.

◆ shape_hessians_eo

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_hessians_eo

Stores the shape second derivatives in a different format, namely the so-called even-odd scheme where the symmetries in shape_hessians are used for faster evaluation.

Definition at line 186 of file shape_info.h.

◆ shape_gradients_collocation_eo

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_gradients_collocation_eo

Stores the shape gradients of the shape function space associated to the quadrature (collocation), given by FE_DGQ<1>(Quadrature<1>). This array provides an alternative representation of the shape_gradients_collocation field in the even-odd format.

Definition at line 194 of file shape_info.h.

◆ shape_hessians_collocation_eo

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_hessians_collocation_eo

Stores the shape hessians of the shape function space associated to the quadrature (collocation), given by FE_DGQ<1>(Quadrature<1>). This array provides an alternative representation of the shape_hessians_collocation field in the even-odd format.

Definition at line 202 of file shape_info.h.

◆ inverse_shape_values

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::inverse_shape_values

Stores the inverse transformation from the data at quadrature points to the basis defined by the shape_values fields. The data at quadrature points is interpreted either implicitly by its polynomial interpolation, or explicitly in terms of separate polynomials such as with the _collocation fields. The size of the array equals the layout of the shape_values array, and it is combined with the shape values array such that this matrix is the pseudo inverse of shape_values. In case the number of 1D quadrature points equals the size of the basis, this array is exactly the inverse of the shape_values array. The length of this array is n_dofs_1d * n_q_points_1d and quadrature points are the index running fastest.

Definition at line 218 of file shape_info.h.

◆ inverse_shape_values_eo

template<typename Number>
AlignedVector<Number> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::inverse_shape_values_eo

Stores the even-odd variant of the inverse_shape_values field.

Definition at line 223 of file shape_info.h.

◆ shape_data_on_face

template<typename Number>
std::array<AlignedVector<Number>, 2> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::shape_data_on_face

Collects all data of 1D shape values evaluated at the point 0 and 1 (the vertices) in one data structure. Sorting is first the values, then gradients, then second derivatives.

Definition at line 230 of file shape_info.h.

◆ quadrature_data_on_face

template<typename Number>
std::array<AlignedVector<Number>, 2> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::quadrature_data_on_face

Collects all data of 1D nodal shape values (defined by the Lagrange polynomials in the points of the quadrature rule) evaluated at the point 0 and 1 (the vertices) in one data structure.

This data structure can be used to interpolate from the cell to the face quadrature points.

Note
In contrast to shape_data_on_face, only the vales are evaluated.

Definition at line 242 of file shape_info.h.

◆ values_within_subface

template<typename Number>
std::array<AlignedVector<Number>, 2> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::values_within_subface

Stores one-dimensional values of shape functions on subface. Since there are two subfaces, store two variants.

Definition at line 248 of file shape_info.h.

◆ gradients_within_subface

template<typename Number>
std::array<AlignedVector<Number>, 2> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::gradients_within_subface

Stores one-dimensional gradients of shape functions on subface. Since there are two subfaces, store two variants.

Definition at line 254 of file shape_info.h.

◆ hessians_within_subface

template<typename Number>
std::array<AlignedVector<Number>, 2> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::hessians_within_subface

Stores one-dimensional gradients of shape functions on subface. Since there are two subfaces, store two variants.

Definition at line 260 of file shape_info.h.

◆ quadrature

template<typename Number>
Quadrature<1> internal::MatrixFreeFunctions::UnivariateShapeData< Number >::quadrature

We store a copy of the one-dimensional quadrature formula used for initialization.

Definition at line 266 of file shape_info.h.

◆ fe_degree

template<typename Number>
unsigned int internal::MatrixFreeFunctions::UnivariateShapeData< Number >::fe_degree

Stores the degree of the element.

Definition at line 271 of file shape_info.h.

◆ n_q_points_1d

template<typename Number>
unsigned int internal::MatrixFreeFunctions::UnivariateShapeData< Number >::n_q_points_1d

Stores the number of quadrature points per dimension.

Definition at line 276 of file shape_info.h.

◆ nodal_at_cell_boundaries

template<typename Number>
bool internal::MatrixFreeFunctions::UnivariateShapeData< Number >::nodal_at_cell_boundaries

Indicates whether the basis functions are nodal in 0 and 1, i.e., the end points of the unit cell.

Definition at line 282 of file shape_info.h.


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