PolynomialBasis1d.h

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// -*- LSST-C++ -*-
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#ifndef LSST_AFW_MATH_POLYNOMIALS_PolynomialBasis1d_h_INCLUDED
#define LSST_AFW_MATH_POLYNOMIALS_PolynomialBasis1d_h_INCLUDED

#include "lsst/geom/polynomials/Scaling1d.h"
#include "lsst/geom/polynomials/RecurrenceBasis1d.h"
#include "lsst/geom/polynomials/ScaledBasis1d.h"

namespace lsst { namespace geom { namespace polynomials {

class PolynomialRecurrence {
public:

    static double getB0(double x) noexcept { return 1; }

    static double getB1(double x) noexcept { return x; }

    static double next(double x, std::size_t n, double current, double previous) noexcept {
        return current*x;
    }

};

using PolynomialBasis1d = RecurrenceBasis1d<PolynomialRecurrence>;

using ScaledPolynomialBasis1d = ScaledBasis1d<PolynomialBasis1d>;

}}} // namespace lsst::geom::polynomials

#endif // !LSST_AFW_MATH_POLYNOMIALS_PolynomialBasis1d_h_INCLUDED