zeta.h

/* specfunc/gsl_sf_zeta.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 */

/* This file was taken from the GNU Scientific Library. Some modifications
 * were done in order to make it independent from the rest of GSL
 */

#ifndef __ZETA_H__
#define __ZETA_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


/* Hurwitz Zeta Function
 * zeta(s,q) = Sum[ (k+q)^(-s), {k,0,Infinity} ]
 *
 * s > 1.0, q > 0.0
 */
double gsl_sf_hzeta(const double s, const double q);


__END_DECLS

#endif /* __ZETA_H__ */