| /* 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 2 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); |
| |
| |
| /* 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__ */ |