#include <deal.II/base/quadrature_lib.h>

Inheritance diagram for QSorted< dim >:

Public Member Functions
	QSorted (const Quadrature< dim >)

bool	operator() (const std::pair< double, Point< dim > > &a, const std::pair< double, Point< dim > > &b)

Public Member Functions inherited from Quadrature< dim >
	Quadrature (const unsigned int n_quadrature_points=0)

	Quadrature (const SubQuadrature &, const Quadrature< 1 > &)

	Quadrature (const Quadrature< dim !=1 ? 1 :0 > &quadrature_1d)

	Quadrature (const Quadrature< dim > &q)

	Quadrature (const std::vector< Point< dim > > &points, const std::vector< double > &weights)

	Quadrature (const std::vector< Point< dim > > &points)

	Quadrature (const Point< dim > &point)

virtual	~Quadrature ()

Quadrature &	operator= (const Quadrature< dim > &)

bool	operator== (const Quadrature< dim > &p) const

void	initialize (const std::vector< Point< dim > > &points, const std::vector< double > &weights)

unsigned int	size () const

const Point< dim > &	point (const unsigned int i) const

const std::vector< Point< dim > > &	get_points () const

double	weight (const unsigned int i) const

const std::vector< double > &	get_weights () const

std::size_t	memory_consumption () const

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Public Member Functions inherited from Subscriptor
	Subscriptor ()

	Subscriptor (const Subscriptor &)

virtual	~Subscriptor ()

Subscriptor &	operator= (const Subscriptor &)

void	subscribe (const char *identifier=0) const

void	unsubscribe (const char *identifier=0) const

unsigned int	n_subscriptions () const

void	list_subscribers () const

	DeclException3 (ExcInUse, int, char *, std::string &,<< "Object of class "<< arg2<< " is still used by "<< arg1<< " other objects."<< "\"<< "(Additional information: "<< arg3<< ")\"<< "See the entry in the Frequently Asked Questions of "<< "deal.II (linked to from http://www.dealii.org/) for "<< "a lot more information on what this error means and "<< "how to fix programs in which it happens.")

	DeclException2 (ExcNoSubscriber, char , char ,<< "No subscriber with identifier <"<< arg2<< "> subscribes to this object of class "<< arg1<< ". Consequently, it cannot be unsubscribed.")

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Additional Inherited Members
Public Types inherited from Quadrature< dim >
typedef Quadrature< dim-1 >	SubQuadrature

Protected Attributes inherited from Quadrature< dim >
std::vector< Point< dim > >	quadrature_points

std::vector< double >	weights

Detailed Description

template<int dim>
class QSorted< dim >

Sorted Quadrature. Given an arbitrary quadrature formula, this class generates a quadrature formula where the quadrature points are ordered according the weights, from those with smaller corresponding weight, to those with higher corresponding weights. This might be necessary, for example, when integrating high order polynomials, since in these cases you might sum very big numbers with very small numbers, and summation is not stable if the numbers to sum are not close to each other.

Definition at line 427 of file quadrature_lib.h.

Constructor & Destructor Documentation

§ QSorted()

template<int dim>

QSorted< dim >::QSorted ( const Quadrature< dim > quad )

The constructor takes an arbitrary quadrature formula.

Definition at line 935 of file quadrature_lib.cc.

Member Function Documentation

§ operator()()

template<int dim>

bool QSorted< dim >::operator()	(	const std::pair< double, Point< dim > > &	a,
		const std::pair< double, Point< dim > > &	b
	)

A rule to reorder pairs of points and weights.

Definition at line 952 of file quadrature_lib.cc.

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

deal.II/base/quadrature_lib.h
/build/deal.ii-pdtiAo/deal.ii-8.4.2/source/base/quadrature_lib.cc

Public Member Functions