/*
 * $Id: specfun.h,v 1.13 2013/07/13 05:52:44 sfeam Exp $
 */

/* GNUPLOT - specfun.h */

/*[
 * Copyright 1999, 2004   Thomas Williams, Colin Kelley
 *
 * Permission to use, copy, and distribute this software and its
 * documentation for any purpose with or without fee is hereby granted,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.
 *
 * Permission to modify the software is granted, but not the right to
 * distribute the complete modified source code.  Modifications are to
 * be distributed as patches to the released version.  Permission to
 * distribute binaries produced by compiling modified sources is granted,
 * provided you
 *   1. distribute the corresponding source modifications from the
 *    released version in the form of a patch file along with the binaries,
 *   2. add special version identification to distinguish your version
 *    in addition to the base release version number,
 *   3. provide your name and address as the primary contact for the
 *    support of your modified version, and
 *   4. retain our contact information in regard to use of the base
 *    software.
 * Permission to distribute the released version of the source code along
 * with corresponding source modifications in the form of a patch file is
 * granted with same provisions 2 through 4 for binary distributions.
 *
 * This software is provided "as is" without express or implied warranty
 * to the extent permitted by applicable law.
]*/

#ifndef GNUPLOT_SPECFUN_H
# define GNUPLOT_SPECFUN_H

/* #if... / #include / #define collection: */

#include "syscfg.h"
#include "eval.h"

/* Type definitions */

/* Variables of specfun.c needed by other modules: */

/* Prototypes of functions exported by specfun.c */
double chisq_cdf __PROTO((int dof, double chisqr));

/* These are the more 'special' functions built into the stack machine. */
void f_erf __PROTO((union argument *x));
void f_erfc __PROTO((union argument *x));
void f_ibeta __PROTO((union argument *x));
void f_igamma __PROTO((union argument *x));
void f_gamma __PROTO((union argument *x));
void f_lgamma __PROTO((union argument *x));
void f_rand __PROTO((union argument *x));
void f_normal __PROTO((union argument *x));
void f_inverse_normal __PROTO((union argument *x));
void f_inverse_erf __PROTO((union argument *x));
void f_lambertw __PROTO((union argument *x));
void f_airy __PROTO((union argument *x));
void f_expint __PROTO((union argument *x));

#ifndef HAVE_LIBCERF
void f_voigt __PROTO((union argument *x));
#endif

#endif /* GNUPLOT_SPECFUN_H */