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]	x	The point at which the basis is being evaluated.
[in]	n	The 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.

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

• /j/snowflake/release/lsstsw/stack/Linux64/geom/19.0.0-1-ge3aa853/include/lsst/geom/polynomials/RecurrenceBasis1d.h