Reference documentation for deal.II version Git 409ee4b167 2020-08-14 09:46:12 -0400
\(\newcommand{\dealvcentcolon}{\mathrel{\mathop{:}}}\) \(\newcommand{\dealcoloneq}{\dealvcentcolon\mathrel{\mkern-1.2mu}=}\) \(\newcommand{\jump}[1]{\left[\!\left[ #1 \right]\!\right]}\) \(\newcommand{\average}[1]{\left\{\!\left\{ #1 \right\}\!\right\}}\)
Public Types | Public Member Functions | Private Attributes | List of all members
QGaussRadauChebyshev< dim > Class Template Reference

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

Inheritance diagram for QGaussRadauChebyshev< dim >:
[legend]

Public Types

enum  EndPoint { left, right }
 
- Public Types inherited from Quadrature< dim >
using SubQuadrature = Quadrature< dim - 1 >
 

Public Member Functions

 QGaussRadauChebyshev (const unsigned int n, EndPoint ep=QGaussRadauChebyshev::left)
 Generate a formula with n quadrature points. More...
 
 QGaussRadauChebyshev (QGaussRadauChebyshev< dim > &&) noexcept=default
 
template<>
 QGaussRadauChebyshev (const unsigned int n, EndPoint ep)
 
- 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 (Quadrature< dim > &&) noexcept=default
 
 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 () override=default
 
Quadratureoperator= (const Quadrature< dim > &)
 
Quadratureoperator= (Quadrature< dim > &&)=default
 
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)
 
bool is_tensor_product () const
 
const std::array< Quadrature< 1 >, dim > & get_tensor_basis () const
 
template<>
 Quadrature (const unsigned int n_q)
 
- Public Member Functions inherited from Subscriptor
 Subscriptor ()
 
 Subscriptor (const Subscriptor &)
 
 Subscriptor (Subscriptor &&) noexcept
 
virtual ~Subscriptor ()
 
Subscriptoroperator= (const Subscriptor &)
 
Subscriptoroperator= (Subscriptor &&) noexcept
 
void subscribe (std::atomic< bool > *const validity, const std::string &identifier="") const
 
void unsubscribe (std::atomic< bool > *const validity, const std::string &identifier="") const
 
unsigned int n_subscriptions () const
 
template<typename StreamType >
void list_subscribers (StreamType &stream) const
 
void list_subscribers () const
 
template<class Archive >
void serialize (Archive &ar, const unsigned int version)
 

Private Attributes

const EndPoint ep
 

Additional Inherited Members

- Static Public Member Functions inherited from Subscriptor
static ::ExceptionBaseExcInUse (int arg1, std::string arg2, std::string arg3)
 
static ::ExceptionBaseExcNoSubscriber (std::string arg1, std::string arg2)
 
- Protected Attributes inherited from Quadrature< dim >
std::vector< Point< dim > > quadrature_points
 
std::vector< doubleweights
 
bool is_tensor_product_flag
 
std::unique_ptr< std::array< Quadrature< 1 >, dim > > tensor_basis
 

Detailed Description

template<int dim>
class QGaussRadauChebyshev< dim >

Gauss-Radau-Chebyshev quadrature rules integrate the weighted product \(\int_{-1}^1 f(x) w(x) dx\) with weight given by: \(w(x) = 1/\sqrt{1-x^2}\) with the additional constraint that a quadrature point lies at one of the two extrema of the interval. The nodes and weights are known analytically, and are exact for monomials up to the order \(2n-2\), where \(n\) is the number of quadrature points. Here we rescale the quadrature formula so that it is defined on the interval \([0,1]\) instead of \([-1,1]\). So the quadrature formulas integrate exactly the integral \(\int_0^1 f(x) w(x) dx\) with the weight: \(w(x) = 1/\sqrt{x(1-x)}\). By default the quadrature is constructed with the left endpoint as quadrature node, but the quadrature node can be imposed at the right endpoint through the variable ep that can assume the values left or right.

Definition at line 512 of file quadrature_lib.h.

Member Enumeration Documentation

◆ EndPoint

template<int dim>
enum QGaussRadauChebyshev::EndPoint
Enumerator
left 

Left end point.

right 

Right end point.

Definition at line 518 of file quadrature_lib.h.

Constructor & Destructor Documentation

◆ QGaussRadauChebyshev() [1/3]

template<int dim>
QGaussRadauChebyshev< dim >::QGaussRadauChebyshev ( const unsigned int  n,
EndPoint  ep = QGaussRadauChebyshev< dim >::left 
)

Generate a formula with n quadrature points.

Definition at line 1118 of file quadrature_lib.cc.

◆ QGaussRadauChebyshev() [2/3]

template<int dim>
QGaussRadauChebyshev< dim >::QGaussRadauChebyshev ( QGaussRadauChebyshev< dim > &&  )
defaultnoexcept

Move constructor. We cannot rely on the move constructor for Quadrature, since it does not know about the additional member ep of this class.

◆ QGaussRadauChebyshev() [3/3]

template<>
QGaussRadauChebyshev< 1 >::QGaussRadauChebyshev ( const unsigned int  n,
EndPoint  ep 
)

Definition at line 1099 of file quadrature_lib.cc.

Member Data Documentation

◆ ep

template<int dim>
const EndPoint QGaussRadauChebyshev< dim >::ep
private

Definition at line 540 of file quadrature_lib.h.


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