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author | Ankit Raj | 2017-06-21 11:42:02 +0530 |
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committer | Ankit Raj | 2017-06-21 11:42:02 +0530 |
commit | 061f07929cc984788154bc296c6cc440ef72a3c6 (patch) | |
tree | c486321ca7a986cb0ffe9c1c8c5f9c385a697776 /thirdparty/includes/GSL/gsl/gsl_sf_erf.h | |
parent | ec8943082d8c262485e7b34515b1597b1d887867 (diff) | |
parent | e92d6c6791aae06053637ad3bf6b0f9d8986986c (diff) | |
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updated with main repo
Diffstat (limited to 'thirdparty/includes/GSL/gsl/gsl_sf_erf.h')
-rw-r--r-- | thirdparty/includes/GSL/gsl/gsl_sf_erf.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/thirdparty/includes/GSL/gsl/gsl_sf_erf.h b/thirdparty/includes/GSL/gsl/gsl_sf_erf.h new file mode 100644 index 0000000..a196d0d --- /dev/null +++ b/thirdparty/includes/GSL/gsl/gsl_sf_erf.h @@ -0,0 +1,91 @@ +/* specfunc/gsl_sf_erf.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_ERF_H__ +#define __GSL_SF_ERF_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 + + +/* Complementary Error Function + * erfc(x) := 2/Sqrt[Pi] Integrate[Exp[-t^2], {t,x,Infinity}] + * + * exceptions: none + */ +int gsl_sf_erfc_e(double x, gsl_sf_result * result); +double gsl_sf_erfc(double x); + + +/* Log Complementary Error Function + * + * exceptions: none + */ +int gsl_sf_log_erfc_e(double x, gsl_sf_result * result); +double gsl_sf_log_erfc(double x); + + +/* Error Function + * erf(x) := 2/Sqrt[Pi] Integrate[Exp[-t^2], {t,0,x}] + * + * exceptions: none + */ +int gsl_sf_erf_e(double x, gsl_sf_result * result); +double gsl_sf_erf(double x); + + +/* Probability functions: + * Z(x) : Abramowitz+Stegun 26.2.1 + * Q(x) : Abramowitz+Stegun 26.2.3 + * + * exceptions: none + */ +int gsl_sf_erf_Z_e(double x, gsl_sf_result * result); +int gsl_sf_erf_Q_e(double x, gsl_sf_result * result); +double gsl_sf_erf_Z(double x); +double gsl_sf_erf_Q(double x); + + +/* Hazard function, also known as the inverse Mill's ratio. + * + * H(x) := Z(x)/Q(x) + * = Sqrt[2/Pi] Exp[-x^2 / 2] / Erfc[x/Sqrt[2]] + * + * exceptions: GSL_EUNDRFLW + */ +int gsl_sf_hazard_e(double x, gsl_sf_result * result); +double gsl_sf_hazard(double x); + + +__END_DECLS + +#endif /* __GSL_SF_ERF_H__ */ |