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/* specfunc/gsl_sf_laguerre.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_LAGUERRE_H__
#define __GSL_SF_LAGUERRE_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
/* L^a_n(x) = (a+1)_n / n! 1F1(-n,a+1,x) */
/* Evaluate generalized Laguerre polynomials
* using explicit representations.
*
* exceptions: none
*/
int gsl_sf_laguerre_1_e(const double a, const double x, gsl_sf_result * result);
int gsl_sf_laguerre_2_e(const double a, const double x, gsl_sf_result * result);
int gsl_sf_laguerre_3_e(const double a, const double x, gsl_sf_result * result);
double gsl_sf_laguerre_1(double a, double x);
double gsl_sf_laguerre_2(double a, double x);
double gsl_sf_laguerre_3(double a, double x);
/* Evaluate generalized Laguerre polynomials.
*
* a > -1.0
* n >= 0
* exceptions: GSL_EDOM
*/
int gsl_sf_laguerre_n_e(const int n, const double a, const double x, gsl_sf_result * result);
double gsl_sf_laguerre_n(int n, double a, double x);
__END_DECLS
#endif /* __GSL_SF_LAGUERRE_H__ */
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