lsst.geom gfd8e8de604+13bd0c414a
Chebyshev1Basis1d.h
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1// -*- LSST-C++ -*-
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22#ifndef LSST_AFW_MATH_POLYNOMIALS_Chebyshev1Basis1d_h_INCLUDED
23#define LSST_AFW_MATH_POLYNOMIALS_Chebyshev1Basis1d_h_INCLUDED
24
28
29namespace lsst { namespace geom { namespace polynomials {
30
37public:
38
39 static double getB0(double x) { return 1; }
40
41 static double getB1(double x) { return x; }
42
43 static double next(double x, std::size_t n, double current, double previous) { return 2*x*current - previous; }
44
45};
46
49
52
53}}} // namespace lsst::geom::polynomials
54
55#endif // !LSST_AFW_MATH_POLYNOMIALS_Chebyshev1Basis1d_h_INCLUDED
A Recurrence for Chebyshev polynomials of the first kind.
static double next(double x, std::size_t n, double current, double previous)
A basis for 1-d series expansions defined by a recurrence relation.
A 1-d basis that transforms all input points before evaluating nested basis.
Definition: ScaledBasis1d.h:44