1 /* specfunc/gsl_sf_sincos_pi.h
3 * Copyright (C) 2017 Konrad Griessinger
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.
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.
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.
20 /* Author: G. Jungman, K. Griessinger */
22 #ifndef __GSL_SF_SINCOS_PI_H__
23 #define __GSL_SF_SINCOS_PI_H__
25 #include <gsl/gsl_sf_result.h>
30 # define __BEGIN_DECLS extern "C" {
31 # define __END_DECLS }
33 # define __BEGIN_DECLS /* empty */
34 # define __END_DECLS /* empty */
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.
45 int gsl_sf_sin_pi_e(double x, gsl_sf_result * result);
46 double gsl_sf_sin_pi(const double x);
49 /* cos_pi(x) with GSL semantics.
51 int gsl_sf_cos_pi_e(double x, gsl_sf_result * result);
52 double gsl_sf_cos_pi(const double x);
57 #endif /* __GSL_SF_SINCOS_PI_H__ */