NonlinearVariationalFunctional::DomainCache Struct Reference

This evaluation cache concept defines the interface that is accessed by the assembler. More...

#include <variationalfunctional.hh>

Detailed Description

This evaluation cache concept defines the interface that is accessed by the assembler.

This is not a base class, only a documentation!

Different objects have to be independent w.r.t. parallel execution.

Definition at line 555 of file variationalfunctional.hh.

Inheritance diagram for NonlinearVariationalFunctional::DomainCache:

Public Member Functions
	DomainCache (Functional const &f, typename Vars::VariableSet const &u, int flags)
template<class Entity >
void	moveTo (Entity const &)
template<class Position , class Evaluators >
void	evaluateAt (Position const &x, Evaluators const &evaluators)
Scalar	d0 () const
template<int row, int dim>
Dune::FieldVector< Scalar, Variables::template Components< row >::m >	d1 (VariationalArg< Scalar, dim > const &arg) const
template<int row, int col, int dim>
Dune::FieldMatrix< Scalar, Variables::template Components< row >::m, Variables::template Components< col >::m >	d2 (VariationalArg< Scalar, dim > const &argT, VariationalArg< Scalar, dim > const &argA) const

Constructor & Destructor Documentation

DomainCache()

NonlinearVariationalFunctional::DomainCache::DomainCache ( Functional const &  f, typename Vars::VariableSet const &  u, int  flags  )

inline

Constructs an evaluation cache from the associated functional f_, a point of linearization u_, and flags from the assembler (see VariationalFunctionalAssembler)

Parameters

[in]

flags

A bit field that tells the cache what parts are to be assembled. If flags & Assembler::RHS is false, d1() will never be called. If flags & Assembler::VALUE is false, d0() will never be called, and d2() will never be called if flags & Assembler::MATRIX is false. This information can be used to restrict the computation to the actually required quantities.

Definition at line 567 of file variationalfunctional.hh.

Member Function Documentation

d0()

Scalar NonlinearVariationalFunctional::DomainCache::d0

(

)

const

Returns the value \(f(u(x))\)

d1()

template<int row, int dim>

Dune::FieldVector< Scalar, Variables::template Components< row >::m > NonlinearVariationalFunctional::DomainCache::d1

(

VariationalArg< Scalar, dim > const &

arg

)

const

Returns the directional derivative of \(f\) with respect to the variable \(u_{\mathrm{row}}\) in direction of the test function given by arg.

d2()

template<int row, int col, int dim>

Dune::FieldMatrix< Scalar, Variables::template Components< row >::m, Variables::template Components< col >::m > NonlinearVariationalFunctional::DomainCache::d2	(	VariationalArg< Scalar, dim > const &	argT,
		VariationalArg< Scalar, dim > const &	argA
	)		const

Returns the second directional derivative of \(f\) with respect to the variables \(u_{\mathrm{row}}\) and \(u_{\mathrm{col}}\) in direction of the test functions given by

• argT and
• argA.

This method need only be defined for values of row/col for which D2<row,col>::present is true.

evaluateAt()

template<class Position , class Evaluators >

void NonlinearVariationalFunctional::DomainCache::evaluateAt ( Position const &  x, Evaluators const &  evaluators  )

inline

Construct all data that is constant at one point. Default implementation in EvalCacheBase: assert(false)

Definition at line 583 of file variationalfunctional.hh.

moveTo()

template<class Entity >

void NonlinearVariationalFunctional::DomainCache::moveTo ( Entity const &  )

inline

Construct all data that is constant in an entity. Default implementation in EvalCacheBase: does nothing

Definition at line 574 of file variationalfunctional.hh.

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

• variationalfunctional.hh