lsst.geom  20.0.0-3-gbd60e8c+eb59cfae10
Static Public Member Functions | List of all members
lsst::geom::polynomials::Recurrence Struct Reference

A recurrence relation concept for RecurrenceBasis1d. More...

#include <RecurrenceBasis1d.h>

Static Public Member Functions

static double getB0 (double x)
 Return the zeroth element of the basis, \(B_0(x)\). More...
 
static double getB1 (double x)
 Return the first element of the basis, \(B_1(x)\). More...
 
static double next (double x, std::size_t n, double current, double previous)
 Return the next element in the recurrence. More...
 

Detailed Description

A recurrence relation concept for RecurrenceBasis1d.

Note
This class is only present in the documentation, as it represents an abstract interface for which C++ (prior to C++20, at least) has no language support. It may be formalized into a true Concept when that language feature is available.

Definition at line 43 of file RecurrenceBasis1d.h.

Member Function Documentation

◆ getB0()

static double lsst::geom::polynomials::Recurrence::getB0 ( double  x)
static

Return the zeroth element of the basis, \(B_0(x)\).

◆ getB1()

static double lsst::geom::polynomials::Recurrence::getB1 ( double  x)
static

Return the first element of the basis, \(B_1(x)\).

◆ next()

static double lsst::geom::polynomials::Recurrence::next ( double  x,
std::size_t  n,
double  current,
double  previous 
)
static

Return the next element in the recurrence.

Parameters
[in]xThe point at which the basis is being evaluated.
[in]nThe order of the current basis function.
[in]current\(B_{n}(x)\), the current basis function value at x.
[in]previous\(B_{n-1}(x)\), the previous basis function value at x.
Returns
\(B_{n+1}(x)\), the next value of the basis function at x.

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