/usr/include/gsl/gsl_sf_trig.h is in libgsl-dev 2.1+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | /* specfunc/gsl_sf_trig.h
*
* Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* Author: G. Jungman */
#ifndef __GSL_SF_TRIG_H__
#define __GSL_SF_TRIG_H__
#include <gsl/gsl_sf_result.h>
#undef __BEGIN_DECLS
#undef __END_DECLS
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS /* empty */
# define __END_DECLS /* empty */
#endif
__BEGIN_DECLS
/* Sin(x) with GSL semantics. This is actually important
* because we want to control the error estimate, and trying
* to guess the error for the standard library implementation
* every time it is used would be a little goofy.
*/
int gsl_sf_sin_e(double x, gsl_sf_result * result);
double gsl_sf_sin(const double x);
/* Cos(x) with GSL semantics.
*/
int gsl_sf_cos_e(double x, gsl_sf_result * result);
double gsl_sf_cos(const double x);
/* Hypot(x,y) with GSL semantics.
*/
int gsl_sf_hypot_e(const double x, const double y, gsl_sf_result * result);
double gsl_sf_hypot(const double x, const double y);
/* Sin(z) for complex z
*
* exceptions: GSL_EOVRFLW
*/
int gsl_sf_complex_sin_e(const double zr, const double zi, gsl_sf_result * szr, gsl_sf_result * szi);
/* Cos(z) for complex z
*
* exceptions: GSL_EOVRFLW
*/
int gsl_sf_complex_cos_e(const double zr, const double zi, gsl_sf_result * czr, gsl_sf_result * czi);
/* Log(Sin(z)) for complex z
*
* exceptions: GSL_EDOM, GSL_ELOSS
*/
int gsl_sf_complex_logsin_e(const double zr, const double zi, gsl_sf_result * lszr, gsl_sf_result * lszi);
/* Sinc(x) = sin(pi x) / (pi x)
*
* exceptions: none
*/
int gsl_sf_sinc_e(double x, gsl_sf_result * result);
double gsl_sf_sinc(const double x);
/* Log(Sinh(x)), x > 0
*
* exceptions: GSL_EDOM
*/
int gsl_sf_lnsinh_e(const double x, gsl_sf_result * result);
double gsl_sf_lnsinh(const double x);
/* Log(Cosh(x))
*
* exceptions: none
*/
int gsl_sf_lncosh_e(const double x, gsl_sf_result * result);
double gsl_sf_lncosh(const double x);
/* Convert polar to rectlinear coordinates.
*
* exceptions: GSL_ELOSS
*/
int gsl_sf_polar_to_rect(const double r, const double theta, gsl_sf_result * x, gsl_sf_result * y);
/* Convert rectilinear to polar coordinates.
* return argument in range [-pi, pi]
*
* exceptions: GSL_EDOM
*/
int gsl_sf_rect_to_polar(const double x, const double y, gsl_sf_result * r, gsl_sf_result * theta);
/* Sin(x) for quantity with an associated error.
*/
int gsl_sf_sin_err_e(const double x, const double dx, gsl_sf_result * result);
/* Cos(x) for quantity with an associated error.
*/
int gsl_sf_cos_err_e(const double x, const double dx, gsl_sf_result * result);
/* Force an angle to lie in the range (-pi,pi].
*
* exceptions: GSL_ELOSS
*/
int gsl_sf_angle_restrict_symm_e(double * theta);
double gsl_sf_angle_restrict_symm(const double theta);
/* Force an angle to lie in the range [0, 2pi)
*
* exceptions: GSL_ELOSS
*/
int gsl_sf_angle_restrict_pos_e(double * theta);
double gsl_sf_angle_restrict_pos(const double theta);
int gsl_sf_angle_restrict_symm_err_e(const double theta, gsl_sf_result * result);
int gsl_sf_angle_restrict_pos_err_e(const double theta, gsl_sf_result * result);
__END_DECLS
#endif /* __GSL_SF_TRIG_H__ */
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