include/gsl/gsl_sf_elljac.h

0001 /* specfunc/gsl_sf_elljac.h
0002  *
0003  * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
0004  *
0005  * This program is free software; you can redistribute it and/or modify
0006  * it under the terms of the GNU General Public License as published by
0007  * the Free Software Foundation; either version 3 of the License, or (at
0008  * your option) any later version.
0009  *
0010  * This program is distributed in the hope that it will be useful, but
0011  * WITHOUT ANY WARRANTY; without even the implied warranty of
0012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0013  * General Public License for more details.
0014  *
0015  * You should have received a copy of the GNU General Public License
0016  * along with this program; if not, write to the Free Software
0017  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
0018  */
0019
0020 /* Author:  G. Jungman */
0021
0022 #ifndef __GSL_SF_ELLJAC_H__
0023 #define __GSL_SF_ELLJAC_H__
0024
0025 #undef __BEGIN_DECLS
0026 #undef __END_DECLS
0027 #ifdef __cplusplus
0028 # define __BEGIN_DECLS extern "C" {
0029 # define __END_DECLS }
0030 #else
0031 # define __BEGIN_DECLS /* empty */
0032 # define __END_DECLS /* empty */
0033 #endif
0034
0035 __BEGIN_DECLS
0036
0037
0038 /* Jacobian elliptic functions sn, dn, cn,
0039  * by descending Landen transformations
0040  *
0041  * exceptions: GSL_EDOM
0042  */
0043 int gsl_sf_elljac_e(double u, double m, double * sn, double * cn, double * dn);
0044
0045
0046 __END_DECLS
0047
0048 #endif /* __GSL_SF_ELLJAC_H__ */