LSST Applications g013ef56533+7c9321ec0f,g042eb84c57+c6cfa41bc3,g199a45376c+0ba108daf9,g1fd858c14a+fcad0d0313,g210f2d0738+c0f94c6586,g262e1987ae+a7e710680e,g29ae962dfc+fb55f2edb0,g2ac17093b6+61d6563b1e,g2b1d02342f+df6f932764,g2cef7863aa+aef1011c0b,g2f7ad74990+c0f94c6586,g35bb328faa+8c5ae1fdc5,g3fd5ace14f+53cf87ae69,g47891489e3+4316d04fff,g511e8cfd20+baa56acf6c,g53246c7159+8c5ae1fdc5,g54cd7ddccb+fd7ad03fde,g64539dfbff+c0f94c6586,g67b6fd64d1+4316d04fff,g67fd3c3899+c0f94c6586,g6985122a63+4316d04fff,g74acd417e5+ca833bee28,g786e29fd12+668abc6043,g81db2e9a8d+b2ec8e584f,g87389fa792+8856018cbb,g89139ef638+4316d04fff,g8d7436a09f+0a24083b20,g8ea07a8fe4+760ca7c3fc,g90f42f885a+033b1d468d,g97be763408+11eb8fd5b8,gbf99507273+8c5ae1fdc5,gcdda8b9158+e4c84c9d5c,gce8aa8abaa+8c5ae1fdc5,gd7ef33dd92+4316d04fff,gdab6d2f7ff+ca833bee28,ge410e46f29+4316d04fff,geaed405ab2+c4bbc419c6,gf9a733ac38+8c5ae1fdc5,w.2025.40
LSST Data Management Base Package
Loading...
Searching...
No Matches
Function.cc
Go to the documentation of this file.
1/*
2 * LSST Data Management System
3 * Copyright 2008, 2009, 2010 LSST Corporation.
4 *
5 * This product includes software developed by the
6 * LSST Project (http://www.lsst.org/).
7 *
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the LSST License Statement and
19 * the GNU General Public License along with this program. If not,
20 * see <http://www.lsstcorp.org/LegalNotices/>.
21 */
22
23/*
24 * Support routines for
25 */
28
29namespace lsst {
30namespace afw {
31namespace math {
32
33template <typename ReturnT>
35 std::vector<double> coeffs(this->getNParameters());
36
37 //
38 // Go through params order by order, evaluating x^r y^s; we do this by first evaluating
39 // y^s for a complete order, then going through again multiplying by x^r
40 //
41 int i0 = 0; // starting index for this order's coefficients
42 for (int order = 0; order <= this->_order; ++order) {
43 coeffs[i0] = 1;
44 double zn = y; // y^s
45 for (int i = 1; i <= order; ++i) {
46 coeffs[i0 + i] = zn;
47 zn *= y;
48 }
49
50 zn = x; // x^r
51 for (int i = order - 1; i >= 0; --i) {
52 coeffs[i0 + i] *= zn;
53 zn *= x;
54 }
55
56 i0 += order + 1;
57 }
58
59 assert(i0 == static_cast<int>(coeffs.size()));
60
61 return coeffs;
62}
63
64} // namespace math
65
67#define INSTANTIATE(TYPE) \
68 template std::shared_ptr<math::Function<TYPE>> \
69 table::io::PersistableFacade<math::Function<TYPE>>::dynamicCast( \
70 std::shared_ptr<table::io::Persistable> const&); \
71 template std::shared_ptr<math::Function1<TYPE>> \
72 table::io::PersistableFacade<math::Function1<TYPE>>::dynamicCast( \
73 std::shared_ptr<table::io::Persistable> const&); \
74 template std::shared_ptr<math::Function2<TYPE>> \
75 table::io::PersistableFacade<math::Function2<TYPE>>::dynamicCast( \
76 std::shared_ptr<table::io::Persistable> const&); \
77 template std::vector<double> math::PolynomialFunction2<TYPE>::getDFuncDParameters(double x, double y) \
78 const
79
80INSTANTIATE(double);
81INSTANTIATE(float);
83} // namespace afw
84} // namespace lsst
#define INSTANTIATE(FROMSYS, TOSYS)
Definition Detector.cc:509
unsigned int getNParameters() const noexcept
Return the number of function parameters.
Definition Function.h:112
std::vector< double > getDFuncDParameters(double x, double y) const override
Return the coefficients of the Function's parameters, evaluated at (x, y) I.e.
Definition Function.cc:34
T size(T... args)