sgpp::base::DehierarchisationPolyClenshawCurtis Class Reference

Class that implements the dehierarchisation on a polynomial sparse grid. More...

#include <DehierarchisationPolyClenshawCurtis.hpp>

Public Member Functions
	DehierarchisationPolyClenshawCurtis (GridStorage &storage, SPolyClenshawCurtisBase *base)
	Constructor, must be bind to a grid. More...
void	operator() (DataVector &source, DataVector &result, grid_iterator &index, size_t dim)
	Implements operator() needed by the sweep class during the grid traversal. More...
	~DehierarchisationPolyClenshawCurtis ()
	Destructor. More...

Protected Types
typedef GridStorage::grid_iterator	grid_iterator
typedef index_t	index_type
typedef level_t	level_type

Protected Member Functions
void	rec (DataVector &source, DataVector &result, grid_iterator &index, size_t dim, DataVector &coeffs)
	Recursive dehierarchisation algorithm, this algorithms works in-place -> source should be equal to result. More...

Protected Attributes
SPolyClenshawCurtisBase *	base
	the base More...
ClenshawCurtisTable &	clenshawCurtisTable
	clenshaw curtis points More...
GridStorage &	storage
	the grid object More...

Detailed Description

Class that implements the dehierarchisation on a polynomial sparse grid.

Therefore the ()operator has to be implement in order to use the sweep algorithm for the grid traversal

Member Typedef Documentation

grid_iterator

typedef GridStorage::grid_iterator sgpp::base::DehierarchisationPolyClenshawCurtis::grid_iterator

protected

index_type

typedef index_t sgpp::base::DehierarchisationPolyClenshawCurtis::index_type

protected

level_type

typedef level_t sgpp::base::DehierarchisationPolyClenshawCurtis::level_type

protected

Constructor & Destructor Documentation

DehierarchisationPolyClenshawCurtis()

sgpp::base::DehierarchisationPolyClenshawCurtis::DehierarchisationPolyClenshawCurtis ( GridStorage &  storage, SPolyClenshawCurtisBase *  base  )

explicit

Constructor, must be bind to a grid.

Parameters

storage	the grid storage object of the the grid, on which the dehierarchisation should be executed
base	Polynomial basis

~DehierarchisationPolyClenshawCurtis()

sgpp::base::DehierarchisationPolyClenshawCurtis::~DehierarchisationPolyClenshawCurtis

(

)

Destructor.

Member Function Documentation

operator()()

void sgpp::base::DehierarchisationPolyClenshawCurtis::operator()	(	DataVector &	source,
		DataVector &	result,
		grid_iterator &	index,
		size_t	dim
	)

Implements operator() needed by the sweep class during the grid traversal.

This function is applied to the whole grid.

Parameters

source	this DataVector holds the linear base coefficients of the sparse grid's ansatz-functions
result	this DataVector holds the node base coefficients of the function that should be applied to the sparse grid
index	a iterator object of the grid
dim	current fixed dimension of the 'execution direction'

References sgpp::base::HashGridIterator::getGridDepth(), rec(), and sgpp::base::DataVector::setAll().

rec()

void sgpp::base::DehierarchisationPolyClenshawCurtis::rec ( DataVector &  source, DataVector &  result, grid_iterator &  index, size_t  dim, DataVector &  coeffs  )

protected

Recursive dehierarchisation algorithm, this algorithms works in-place -> source should be equal to result.

Parameters

source	this DataVector holds the linear base coefficients of the sparse grid's ansatz-functions
result	this DataVector holds the node base coefficients of the function that should be applied to the sparse grid
index	a iterator object of the grid
dim	current fixed dimension of the 'execution direction'
coeffs	nodal coefficients computed so far

References base, clenshawCurtisTable, sgpp::base::PolyClenshawCurtisBasis< LT, IT >::evalHierToTop(), sgpp::base::HashGridIterator::get(), sgpp::base::ClenshawCurtisTable::getPoint(), sgpp::base::HashGridIterator::hint(), sgpp::base::HashGridStorage::isInvalidSequenceNumber(), sgpp::base::HashGridIterator::leftChild(), sgpp::base::HashGridIterator::seq(), sgpp::base::HashGridIterator::stepRight(), storage, and sgpp::base::HashGridIterator::up().

Referenced by operator()().

Member Data Documentation

base

SPolyClenshawCurtisBase* sgpp::base::DehierarchisationPolyClenshawCurtis::base

protected

the base

Referenced by rec().

clenshawCurtisTable

ClenshawCurtisTable& sgpp::base::DehierarchisationPolyClenshawCurtis::clenshawCurtisTable

protected

clenshaw curtis points

Referenced by rec().

storage

GridStorage& sgpp::base::DehierarchisationPolyClenshawCurtis::storage

protected

the grid object

Referenced by rec().

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

• base/src/sgpp/base/operation/hash/common/algorithm_sweep/DehierarchisationPolyClenshawCurtis.hpp
• base/src/sgpp/base/operation/hash/common/algorithm_sweep/DehierarchisationPolyClenshawCurtis.cpp