/usr/include/gsl/gsl_sf_exp.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 | /* specfunc/gsl_sf_exp.h
*
* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2004 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_EXP_H__
#define __GSL_SF_EXP_H__
#include <gsl/gsl_sf_result.h>
#include <gsl/gsl_precision.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
/* Provide an exp() function with GSL semantics,
* i.e. with proper error checking, etc.
*
* exceptions: GSL_EOVRFLW, GSL_EUNDRFLW
*/
int gsl_sf_exp_e(const double x, gsl_sf_result * result);
double gsl_sf_exp(const double x);
/* Exp(x)
*
* exceptions: GSL_EOVRFLW, GSL_EUNDRFLW
*/
int gsl_sf_exp_e10_e(const double x, gsl_sf_result_e10 * result);
/* Exponentiate and multiply by a given factor: y * Exp(x)
*
* exceptions: GSL_EOVRFLW, GSL_EUNDRFLW
*/
int gsl_sf_exp_mult_e(const double x, const double y, gsl_sf_result * result);
double gsl_sf_exp_mult(const double x, const double y);
/* Exponentiate and multiply by a given factor: y * Exp(x)
*
* exceptions: GSL_EOVRFLW, GSL_EUNDRFLW
*/
int gsl_sf_exp_mult_e10_e(const double x, const double y, gsl_sf_result_e10 * result);
/* exp(x)-1
*
* exceptions: GSL_EOVRFLW
*/
int gsl_sf_expm1_e(const double x, gsl_sf_result * result);
double gsl_sf_expm1(const double x);
/* (exp(x)-1)/x = 1 + x/2 + x^2/(2*3) + x^3/(2*3*4) + ...
*
* exceptions: GSL_EOVRFLW
*/
int gsl_sf_exprel_e(const double x, gsl_sf_result * result);
double gsl_sf_exprel(const double x);
/* 2(exp(x)-1-x)/x^2 = 1 + x/3 + x^2/(3*4) + x^3/(3*4*5) + ...
*
* exceptions: GSL_EOVRFLW
*/
int gsl_sf_exprel_2_e(double x, gsl_sf_result * result);
double gsl_sf_exprel_2(const double x);
/* Similarly for the N-th generalization of
* the above. The so-called N-relative exponential
*
* exprel_N(x) = N!/x^N (exp(x) - Sum[x^k/k!, {k,0,N-1}])
* = 1 + x/(N+1) + x^2/((N+1)(N+2)) + ...
* = 1F1(1,1+N,x)
*/
int gsl_sf_exprel_n_e(const int n, const double x, gsl_sf_result * result);
double gsl_sf_exprel_n(const int n, const double x);
int gsl_sf_exprel_n_CF_e(const double n, const double x, gsl_sf_result * result);
/* Exponentiate a quantity with an associated error.
*/
int gsl_sf_exp_err_e(const double x, const double dx, gsl_sf_result * result);
/* Exponentiate a quantity with an associated error.
*/
int gsl_sf_exp_err_e10_e(const double x, const double dx, gsl_sf_result_e10 * result);
/* Exponentiate and multiply by a given factor: y * Exp(x),
* for quantities with associated errors.
*
* exceptions: GSL_EOVRFLW, GSL_EUNDRFLW
*/
int gsl_sf_exp_mult_err_e(const double x, const double dx, const double y, const double dy, gsl_sf_result * result);
/* Exponentiate and multiply by a given factor: y * Exp(x),
* for quantities with associated errors.
*
* exceptions: GSL_EOVRFLW, GSL_EUNDRFLW
*/
int gsl_sf_exp_mult_err_e10_e(const double x, const double dx, const double y, const double dy, gsl_sf_result_e10 * result);
__END_DECLS
#endif /* __GSL_SF_EXP_H__ */
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