LevelS SHT library  3.50
sharp_legendre_roots.h
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1 /*
2  * This file is part of libsharp.
3  *
4  * libsharp is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * libsharp is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with libsharp; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 /*
20  * libsharp is being developed at the Max-Planck-Institut fuer Astrophysik
21  * and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
22  * (DLR).
23  */
24 
25 /*! \file sharp_legendre_roots.h
26  *
27  * Copyright (C) 2006-2012 Max-Planck-Society
28  * \author Martin Reinecke
29  */
30 
31 #ifndef SHARP_LEGENDRE_ROOTS_H
32 #define SHARP_LEGENDRE_ROOTS_H
33 
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37 
38 /*! Computes roots and Gaussian quadrature weights for Legendre polynomial
39  of degree \a n.
40  \param n Order of Legendre polynomial
41  \param x Array of length \a n for output (root position)
42  \param w Array of length \a w for output (weight for Gaussian quadrature)
43  */
44 void sharp_legendre_roots(int n, double *x, double *w);
45 
46 #ifdef __cplusplus
47 }
48 #endif
49 
50 #endif
void sharp_legendre_roots(int n, double *x, double *w)

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