FEInterfaceViews::Scalar< dim, spacedim > Class Template Reference

#include <deal.II/fe/fe_interface_values.h>

Inheritance diagram for FEInterfaceViews::Scalar< dim, spacedim >:

Public Types
using	value_type = double
using	gradient_type
using	hessian_type
using	third_derivative_type
template<typename Number >
using	solution_value_type = typename ProductType<Number, value_type>::type
template<typename Number >
using	solution_gradient_type
template<typename Number >
using	solution_hessian_type
template<typename Number >
using	solution_third_derivative_type

Public Member Functions
	Scalar (const FEInterfaceValues< dim, spacedim > &fe_interface, const unsigned int component)
Access to shape functions
value_type	value (const bool here_or_there, const unsigned int interface_dof_index, const unsigned int q_point) const
Access to jumps in shape functions and their derivatives
value_type	jump_in_values (const unsigned int interface_dof_index, const unsigned int q_point) const
gradient_type	jump_in_gradients (const unsigned int interface_dof_index, const unsigned int q_point) const
hessian_type	jump_in_hessians (const unsigned int interface_dof_index, const unsigned int q_point) const
third_derivative_type	jump_in_third_derivatives (const unsigned int interface_dof_index, const unsigned int q_point) const
Access to the average of shape functions and their derivatives
value_type	average_of_values (const unsigned int interface_dof_index, const unsigned int q_point) const
gradient_type	average_of_gradients (const unsigned int interface_dof_index, const unsigned int q_point) const
hessian_type	average_of_hessians (const unsigned int interface_dof_index, const unsigned int q_point) const
Access to values of global finite element fields
template<class InputVector >
void	get_function_values (const bool here_or_there, const InputVector &fe_function, std::vector< solution_value_type< typename InputVector::value_type > > &values) const
template<class InputVector >
void	get_function_values_from_local_dof_values (const bool here_or_there, const InputVector &local_dof_values, std::vector< solution_value_type< typename InputVector::value_type > > &values) const
Access to jumps in global finite element fields
template<class InputVector >
void	get_jump_in_function_values (const InputVector &fe_function, std::vector< solution_value_type< typename InputVector::value_type > > &values) const
template<class InputVector >
void	get_jump_in_function_values_from_local_dof_values (const InputVector &local_dof_values, std::vector< solution_value_type< typename InputVector::value_type > > &values) const
template<class InputVector >
void	get_jump_in_function_gradients (const InputVector &fe_function, std::vector< solution_gradient_type< typename InputVector::value_type > > &gradients) const
template<class InputVector >
void	get_jump_in_function_gradients_from_local_dof_values (const InputVector &local_dof_values, std::vector< solution_gradient_type< typename InputVector::value_type > > &gradients) const
template<class InputVector >
void	get_jump_in_function_hessians (const InputVector &fe_function, std::vector< solution_hessian_type< typename InputVector::value_type > > &hessians) const
template<class InputVector >
void	get_jump_in_function_hessians_from_local_dof_values (const InputVector &local_dof_values, std::vector< solution_hessian_type< typename InputVector::value_type > > &hessians) const
template<class InputVector >
void	get_jump_in_function_third_derivatives (const InputVector &fe_function, std::vector< solution_third_derivative_type< typename InputVector::value_type > > &third_derivatives) const
template<class InputVector >
void	get_jump_in_function_third_derivatives_from_local_dof_values (const InputVector &local_dof_values, std::vector< solution_third_derivative_type< typename InputVector::value_type > > &third_derivatives) const
Access to the average of global finite element fields
template<class InputVector >
void	get_average_of_function_values (const InputVector &fe_function, std::vector< solution_value_type< typename InputVector::value_type > > &values) const
template<class InputVector >
void	get_average_of_function_values_from_local_dof_values (const InputVector &local_dof_values, std::vector< solution_value_type< typename InputVector::value_type > > &values) const
template<class InputVector >
void	get_average_of_function_gradients (const InputVector &fe_function, std::vector< solution_gradient_type< typename InputVector::value_type > > &gradients) const
template<class InputVector >
void	get_average_of_function_gradients_from_local_dof_values (const InputVector &local_dof_values, std::vector< solution_gradient_type< typename InputVector::value_type > > &gradients) const
template<class InputVector >
void	get_average_of_function_hessians (const InputVector &fe_function, std::vector< solution_hessian_type< typename InputVector::value_type > > &hessians) const
template<class InputVector >
void	get_average_of_function_hessians_from_local_dof_values (const InputVector &local_dof_values, std::vector< solution_hessian_type< typename InputVector::value_type > > &hessians) const

Protected Member Functions
void	get_local_dof_values (const InputVector &dof_values, OutputVector &local_dof_values) const

Protected Attributes
const FEInterfaceValues< dim, spacedim > *	fe_interface

Private Attributes
const FEValuesExtractors::Scalar	extractor

Detailed Description

template<int dim, int spacedim = dim>
class FEInterfaceViews::Scalar< dim, spacedim >

The view of a scalar variable for FEInterfaceValues.

Definition at line 76 of file fe_interface_values.h.

Member Typedef Documentation

value_type

template<int dim, int spacedim = dim>

using FEInterfaceViews::Scalar< dim, spacedim >::value_type = double

This is the type returned for values.

Definition at line 82 of file fe_interface_values.h.

gradient_type

template<int dim, int spacedim = dim>

using FEInterfaceViews::Scalar< dim, spacedim >::gradient_type

Initial value:

 
      typename FEValuesViews::Scalar<dim, spacedim>::gradient_type

This is the type returned for gradients, for example from average_of_gradients().

Definition at line 88 of file fe_interface_values.h.

hessian_type

template<int dim, int spacedim = dim>

using FEInterfaceViews::Scalar< dim, spacedim >::hessian_type

Initial value:

 
      typename FEValuesViews::Scalar<dim, spacedim>::hessian_type

This is the type returned for hessians, for example from jump_in_hessians().

Definition at line 95 of file fe_interface_values.h.

third_derivative_type

template<int dim, int spacedim = dim>

using FEInterfaceViews::Scalar< dim, spacedim >::third_derivative_type

Initial value:

 
      typename FEValuesViews::Scalar<dim, spacedim>::third_derivative_type

This is the type returned for third derivatives, for example from jump_in_hessians().

Definition at line 102 of file fe_interface_values.h.

solution_value_type

template<int dim, int spacedim = dim>

template<typename Number >

using FEInterfaceViews::Scalar< dim, spacedim >::solution_value_type = typename ProductType<Number, value_type>::type

An alias for the data type of the product of a Number and the values of the view this class provides. This is the data type of scalar components of a finite element field whose degrees of freedom are described by a vector with elements of type Number.

Definition at line 112 of file fe_interface_values.h.

solution_gradient_type

template<int dim, int spacedim = dim>

template<typename Number >

using FEInterfaceViews::Scalar< dim, spacedim >::solution_gradient_type

Initial value:

 
      typename ProductType<Number, gradient_type>::type

An alias for the data type of the product of a Number and the gradients of the view this class provides. This is the data type of scalar components of a finite element field whose degrees of freedom are described by a vector with elements of type Number.

Definition at line 121 of file fe_interface_values.h.

solution_hessian_type

template<int dim, int spacedim = dim>

template<typename Number >

using FEInterfaceViews::Scalar< dim, spacedim >::solution_hessian_type

Initial value:

 
      typename ProductType<Number, hessian_type>::type

An alias for the data type of the product of a Number and the Hessians of the view this class provides. This is the data type of scalar components of a finite element field whose degrees of freedom are described by a vector with elements of type Number.

Definition at line 131 of file fe_interface_values.h.

solution_third_derivative_type

template<int dim, int spacedim = dim>

template<typename Number >

using FEInterfaceViews::Scalar< dim, spacedim >::solution_third_derivative_type

Initial value:

 
      typename ProductType<Number, third_derivative_type>::type

An alias for the data type of the product of a Number and the third derivatives of the view this class provides. This is the data type of scalar components of a finite element field whose degrees of freedom are described by a vector with elements of type Number.

Definition at line 141 of file fe_interface_values.h.

Constructor & Destructor Documentation

Scalar()

template<int dim, int spacedim = dim>

FEInterfaceViews::Scalar< dim, spacedim >::Scalar	(	const FEInterfaceValues< dim, spacedim > &	fe_interface,
		const unsigned int	component )

Constructor for an object that represents a single scalar component

Member Function Documentation

value()

template<int dim, int spacedim = dim>

value_type FEInterfaceViews::Scalar< dim, spacedim >::value	(	const bool	here_or_there,
		const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the value of the shape function with interface dof index interface_dof_index in quadrature point q_point of the component selected by this view.

The argument here_or_there selects between the upstream value and the downstream value as defined by the direction of the normal vector in this quadrature point. If here_or_there is true, the shape functions from the first cell of the interface is used.

In other words, this function returns the limit of the value of the shape function in the given quadrature point when approaching it from one of the two cells of the interface.

Note

This function is typically used to pick the upstream or downstream value based on a direction. This can be achieved by using (direction * normal)>0 as the first argument of this function.

jump_in_values()

template<int dim, int spacedim = dim>

value_type FEInterfaceViews::Scalar< dim, spacedim >::jump_in_values	(	const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the jump \(\jump{u}=u_1 - u_2\) on the interface for the shape function interface_dof_index in the quadrature point q_point of the component selected by this view.

Note

The name of the function is supposed to be read as "the jump (singular) in the values (plural: one or two possible values) of the shape function (singular)".

jump_in_gradients()

template<int dim, int spacedim = dim>

gradient_type FEInterfaceViews::Scalar< dim, spacedim >::jump_in_gradients	(	const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the jump of the gradient \(\jump{nabla u}\) on the interface for the shape function interface_dof_index in the quadrature point q_point of the component selected by this view.

Note

The name of the function is supposed to be read as "the jump (singular) in the gradients (plural: one or two possible gradients) of the shape function (singular)".

jump_in_hessians()

template<int dim, int spacedim = dim>

hessian_type FEInterfaceViews::Scalar< dim, spacedim >::jump_in_hessians	(	const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the jump in the gradient \(\jump{\nabla u}=\nabla u_{\text{cell0}} - \nabla u_{\text{cell1}}\) on the interface for the shape function interface_dof_index at the quadrature point q_point of the component selected by this view.

Note

The name of the function is supposed to be read as "the jump (singular) in the Hessians (plural: one or two possible values for the second derivative) of the shape function (singular)".

jump_in_third_derivatives()

template<int dim, int spacedim = dim>

third_derivative_type FEInterfaceViews::Scalar< dim, spacedim >::jump_in_third_derivatives	(	const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the jump in the third derivative \(\jump{\nabla^3 u} = \nabla^3 u_{\text{cell0}} - \nabla^3 u_{\text{cell1}}\) on the interface for the shape function interface_dof_index at the quadrature point q_point of the component selected by this view.

Note

The name of the function is supposed to be read as "the jump (singular) in the third derivatives (plural: one or two possible values for the third derivative) of the shape function (singular)".

average_of_values()

template<int dim, int spacedim = dim>

value_type FEInterfaceViews::Scalar< dim, spacedim >::average_of_values	(	const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the average value \(\average{u}=\frac{1}{2}(u_1 + u_2)\) on the interface for the shape function interface_dof_index in the quadrature point q_point of the component selected by this view.

Note

The name of the function is supposed to be read as "the average (singular) of the values (plural: one or two possible values) of the shape function (singular)".

average_of_gradients()

template<int dim, int spacedim = dim>

gradient_type FEInterfaceViews::Scalar< dim, spacedim >::average_of_gradients	(	const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the average of the gradient \(\average{\nabla u}\) on the interface for the shape function interface_dof_index in the quadrature point q_point of the component selected by this view.

Note

The name of the function is supposed to be read as "the average (singular) of the gradients (plural: one or two possible values of the derivative) of the shape function (singular)".

average_of_hessians()

template<int dim, int spacedim = dim>

hessian_type FEInterfaceViews::Scalar< dim, spacedim >::average_of_hessians	(	const unsigned int	interface_dof_index,
		const unsigned int	q_point ) const

Return the average of the Hessian \(\average{\nabla^2 u} = \frac{1}{2}\nabla^2 u_{\text{cell0}} + \frac{1}{2} \nabla^2 u_{\text{cell1}}\) on the interface for the shape function interface_dof_index at the quadrature point q_point of the component selected by this view.

Note

The name of the function is supposed to be read as "the average (singular) in the Hessians (plural: one or two possible values of the second derivative) of the shape function (singular)".

get_function_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_function_values	(	const bool	here_or_there,
		const InputVector &	fe_function,
		std::vector< solution_value_type< typename InputVector::value_type > > &	values ) const

Return the values of the selected scalar component of the finite element function characterized by fe_function at the quadrature points of the cell interface selected the last time the reinit function of the FEInterfaceValues object was called.

The argument here_or_there selects between the value on cell 0 (here, true) and cell 1 (there, false). You can also interpret it as "upstream" (true) and "downstream" (false) as defined by the direction of the normal vector in this quadrature point. If here_or_there is true, the values from the first cell of the interface is used.

The data type stored by the output vector must be what you get when you multiply the values of shape functions (i.e., value_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_values flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_function_values_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_function_values_from_local_dof_values	(	const bool	here_or_there,
		const InputVector &	local_dof_values,
		std::vector< solution_value_type< typename InputVector::value_type > > &	values ) const

Same as above, but using a vector of local degree-of-freedom values. In other words, instead of extracting the nodal values of the degrees of freedom located on the current cell interface from a global vector associated with a DoFHandler object (as the function above does), this function instead takes these local nodal values through its first argument.

Parameters

[in]	here_or_there	Same as the one in the above function.
[in]	local_dof_values	A vector of local nodal values. This vector must have a length equal to number of DoFs on the current cell, and must be ordered in the same order as degrees of freedom are numbered on the reference cell.
[out]	values	A vector of values of the given finite element field, at the quadrature points on the current object.

Template Parameters

InputVector

The InputVector type must allow creation of an ArrayView object from it; this is satisfied by the std::vector class, among others.

get_jump_in_function_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_values	(	const InputVector &	fe_function,
		std::vector< solution_value_type< typename InputVector::value_type > > &	values ) const

Return the jump in the values of the selected scalar component of the finite element function characterized by fe_function at the quadrature points of the cell interface selected the last time the reinit function of the FEInterfaceValues object was called.

The data type stored by the output vector must be what you get when you multiply the values of shape functions (i.e., value_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_values flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_jump_in_function_values_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_values_from_local_dof_values	(	const InputVector &	local_dof_values,
		std::vector< solution_value_type< typename InputVector::value_type > > &	values ) const

This function relates to get_jump_in_function_values() in the same way as get_function_values_from_local_dof_values() relates to get_function_values(). See the documentation of get_function_values_from_local_dof_values() for more information.

get_jump_in_function_gradients()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_gradients	(	const InputVector &	fe_function,
		std::vector< solution_gradient_type< typename InputVector::value_type > > &	gradients ) const

Return the jump in the gradients of the selected scalar components of the finite element function characterized by fe_function at the quadrature points of the cell interface selected the last time the reinit function of the FEInterfaceValues object was called.

The data type stored by the output vector must be what you get when you multiply the gradients of shape functions (i.e., gradient_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_gradients flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_jump_in_function_gradients_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_gradients_from_local_dof_values	(	const InputVector &	local_dof_values,
		std::vector< solution_gradient_type< typename InputVector::value_type > > &	gradients ) const

This function relates to get_jump_in_function_gradients() in the same way as get_function_values_from_local_dof_values() relates to get_function_values(). See the documentation of get_function_values_from_local_dof_values() for more information.

get_jump_in_function_hessians()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_hessians	(	const InputVector &	fe_function,
		std::vector< solution_hessian_type< typename InputVector::value_type > > &	hessians ) const

Return the jump in the Hessians of the selected scalar component of the finite element function characterized by fe_function at the quadrature points of the cell, face or subface selected the last time the reinit function of the FEInterfaceValues object was called.

The data type stored by the output vector must be what you get when you multiply the Hessians of shape functions (i.e., hessian_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_hessians flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_jump_in_function_hessians_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_hessians_from_local_dof_values	(	const InputVector &	local_dof_values,
		std::vector< solution_hessian_type< typename InputVector::value_type > > &	hessians ) const

This function relates to get_jump_in_function_hessians() in the same way as get_function_values_from_local_dof_values() relates to get_function_values(). See the documentation of get_function_values_from_local_dof_values() for more information.

get_jump_in_function_third_derivatives()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_third_derivatives	(	const InputVector &	fe_function,
		std::vector< solution_third_derivative_type< typename InputVector::value_type > > &	third_derivatives ) const

Return the jump in the third derivatives of the selected scalar component of the finite element function characterized by fe_function at the quadrature points of the cell, face or subface selected the last time the reinit function of the FEInterfaceValues object was called.

The data type stored by the output vector must be what you get when you multiply the third derivatives of shape functions (i.e., third_derivative_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_third_derivatives flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_jump_in_function_third_derivatives_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_jump_in_function_third_derivatives_from_local_dof_values	(	const InputVector &	local_dof_values,
		std::vector< solution_third_derivative_type< typename InputVector::value_type > > &	third_derivatives ) const

This function relates to get_jump_in_function_third_derivatives() in the same way as get_function_values_from_local_dof_values() relates to get_function_values(). See the documentation of get_function_values_from_local_dof_values() for more information.

get_average_of_function_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_average_of_function_values	(	const InputVector &	fe_function,
		std::vector< solution_value_type< typename InputVector::value_type > > &	values ) const

Return the average of the values of the selected scalar component of the finite element function characterized by fe_function at the quadrature points of the cell interface selected the last time the reinit function of the FEInterfaceValues object was called.

The data type stored by the output vector must be what you get when you multiply the values of shape functions (i.e., value_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_values flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_average_of_function_values_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_average_of_function_values_from_local_dof_values	(	const InputVector &	local_dof_values,
		std::vector< solution_value_type< typename InputVector::value_type > > &	values ) const

This function relates to get_average_of_function_values() in the same way as get_function_values_from_local_dof_values() relates to get_function_values(). See the documentation of get_function_values_from_local_dof_values() for more information.

get_average_of_function_gradients()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_average_of_function_gradients	(	const InputVector &	fe_function,
		std::vector< solution_gradient_type< typename InputVector::value_type > > &	gradients ) const

Return the average of the gradients of the selected scalar components of the finite element function characterized by fe_function at the quadrature points of the cell interface selected the last time the reinit function of the FEInterfaceValues object was called.

The data type stored by the output vector must be what you get when you multiply the gradients of shape functions (i.e., gradient_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_gradients flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_average_of_function_gradients_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_average_of_function_gradients_from_local_dof_values	(	const InputVector &	local_dof_values,
		std::vector< solution_gradient_type< typename InputVector::value_type > > &	gradients ) const

This function relates to get_average_of_function_gradients() in the same way as get_function_values_from_local_dof_values() relates to get_function_values(). See the documentation of get_function_values_from_local_dof_values() for more information.

get_average_of_function_hessians()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_average_of_function_hessians	(	const InputVector &	fe_function,
		std::vector< solution_hessian_type< typename InputVector::value_type > > &	hessians ) const

Return the average of the Hessians of the selected scalar component of the finite element function characterized by fe_function at the quadrature points of the cell, face or subface selected the last time the reinit function of the FEInterfaceValues object was called.

The data type stored by the output vector must be what you get when you multiply the Hessians of shape functions (i.e., hessian_type) times the type used to store the values of the unknowns \(U_j\) of your finite element vector \(U\) (represented by the fe_function argument).

Note

For this function to work properly, the underlying FEValues, FEFaceValues, or FESubfaceValues object on which you call it must have computed the information you are requesting. To do so, the update_hessians flag must be an element of the list of UpdateFlags that you passed to the constructor of this object. See The interplay of UpdateFlags, Mapping, and FiniteElement in FEValues for more information.

get_average_of_function_hessians_from_local_dof_values()

template<int dim, int spacedim = dim>

template<class InputVector >

void FEInterfaceViews::Scalar< dim, spacedim >::get_average_of_function_hessians_from_local_dof_values	(	const InputVector &	local_dof_values,
		std::vector< solution_hessian_type< typename InputVector::value_type > > &	hessians ) const

This function relates to get_average_of_function_hessians() in the same way as get_function_values_from_local_dof_values() relates to get_function_values(). See the documentation of get_function_values_from_local_dof_values() for more information.

get_local_dof_values()

void FEInterfaceViews::Base< dim, spacedim >::get_local_dof_values ( const InputVector & dof_values, OutputVector & local_dof_values ) const

protectedinherited

Get the local degree-of-freedom values associated with the internally initialized cell interface.

Member Data Documentation

extractor

template<int dim, int spacedim = dim>

const FEValuesExtractors::Scalar FEInterfaceViews::Scalar< dim, spacedim >::extractor

private

The extractor for this view.

Definition at line 617 of file fe_interface_values.h.

fe_interface

const FEInterfaceValues<dim, spacedim>* FEInterfaceViews::Base< dim, spacedim >::fe_interface

protectedinherited

Store a pointer to the FEInterfaceValues instance.

Definition at line 58 of file fe_interface_values.h.

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

• include/deal.II/fe/fe_interface_values.h