1/* specfunc/gsl_sf_sincos_pi.h
2 *
3 * Copyright (C) 2017 Konrad Griessinger
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 */
19
20/* Author: G. Jungman, K. Griessinger */
21
22#ifndef __GSL_SF_SINCOS_PI_H__
23#define __GSL_SF_SINCOS_PI_H__
24
25#include <gsl/gsl_sf_result.h>
26
27#undef __BEGIN_DECLS
28#undef __END_DECLS
29#ifdef __cplusplus
30# define __BEGIN_DECLS extern "C" {
31# define __END_DECLS }
32#else
33# define __BEGIN_DECLS /* empty */
34# define __END_DECLS /* empty */
35#endif
36
37__BEGIN_DECLS
38
39
40/* sin_pi(x) with GSL semantics. This is actually important
41 * because we want to control the error estimate, and trying
42 * to guess the error for the standard library implementation
43 * every time it is used would be a little goofy.
44 */
45int gsl_sf_sin_pi_e(double x, gsl_sf_result * result);
46double gsl_sf_sin_pi(const double x);
47
48
49/* cos_pi(x) with GSL semantics.
50 */
51int gsl_sf_cos_pi_e(double x, gsl_sf_result * result);
52double gsl_sf_cos_pi(const double x);
53
54
55__END_DECLS
56
57#endif /* __GSL_SF_SINCOS_PI_H__ */
58