1 |
/* |
2 |
* Copyright (C) 2000-2004 Object Oriented Parallel Simulation Engine (OOPSE) project |
3 |
* |
4 |
* Contact: oopse@oopse.org |
5 |
* |
6 |
* This program is free software; you can redistribute it and/or |
7 |
* modify it under the terms of the GNU Lesser General Public License |
8 |
* as published by the Free Software Foundation; either version 2.1 |
9 |
* of the License, or (at your option) any later version. |
10 |
* All we ask is that proper credit is given for our work, which includes |
11 |
* - but is not limited to - adding the above copyright notice to the beginning |
12 |
* of your source code files, and to any copyright notice that you may distribute |
13 |
* with programs based on this work. |
14 |
* |
15 |
* This program is distributed in the hope that it will be useful, |
16 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 |
* GNU Lesser General Public License for more details. |
19 |
* |
20 |
* You should have received a copy of the GNU Lesser General Public License |
21 |
* along with this program; if not, write to the Free Software |
22 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
23 |
* |
24 |
*/ |
25 |
|
26 |
#include "math/ChebyshevPolynomials.hpp" |
27 |
|
28 |
namespace oopse { |
29 |
ChebyshevPolynomials::ChebyshevPolynomials(int maxPower) : maxPower_(maxPower){ |
30 |
|
31 |
assert(maxPower >= 0); |
32 |
GeneratePolynomials(maxPower_); |
33 |
} |
34 |
|
35 |
ChebyshevPolynomials::GeneratePolynomials(int maxPower) { |
36 |
DoublePolynomial t0; |
37 |
t0.setCoefficient(0, 1.0); |
38 |
polyList_.push_back(t0); |
39 |
|
40 |
DoublePolynomial t1; |
41 |
t1.setCoefficient(1, 1.0); |
42 |
|
43 |
DoublePolynomial twoX; |
44 |
twoX.setCoefficient(1, 2.0); |
45 |
|
46 |
for (int i = 2; i <= maxPower; ++i) { |
47 |
DoublePolynomial tn; |
48 |
|
49 |
tn = polyList_[i] * twoX - polyList_[i-2]; |
50 |
polyList_.push_back(tn); |
51 |
} |
52 |
} |
53 |
|
54 |
} //end namespace oopse |