lsst.geom ga1e77700b3+f258a22cbf
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PolynomialBasis1d.h
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1// -*- LSST-C++ -*-
2/*
3 * Developed for the LSST Data Management System.
4 * This product includes software developed by the LSST Project
5 * (https://www.lsst.org).
6 * See the COPYRIGHT file at the top-level directory of this distribution
7 * for details of code ownership.
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <https://www.gnu.org/licenses/>.
21 */
22#ifndef LSST_AFW_MATH_POLYNOMIALS_PolynomialBasis1d_h_INCLUDED
23#define LSST_AFW_MATH_POLYNOMIALS_PolynomialBasis1d_h_INCLUDED
24
28
29namespace lsst { namespace geom { namespace polynomials {
30
37public:
38
39 static double getB0(double x) noexcept { return 1; }
40
41 static double getB1(double x) noexcept { return x; }
42
43 static double next(double x, std::size_t n, double current, double previous) noexcept {
44 return current*x;
45 }
46
47};
48
51
54
55}}} // namespace lsst::geom::polynomials
56
57#endif // !LSST_AFW_MATH_POLYNOMIALS_PolynomialBasis1d_h_INCLUDED
A Recurrence for standard polynomials.
static double next(double x, std::size_t n, double current, double previous) noexcept
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.