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/*!
* \file
* \brief Bessel help functions header. For internal use only.
* \author Tony Ottosson
*
* -------------------------------------------------------------------------
*
* IT++ - C++ library of mathematical, signal processing, speech processing,
* and communications classes and functions
*
* Copyright (C) 1995-2008 (see AUTHORS file for a list of contributors)
*
* 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 2 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
* -------------------------------------------------------------------------
*/
#ifndef BESSEL_INTERNAL_H
#define BESSEL_INTERNAL_H
//! \cond
#include <cmath>
double chbevl(double x, double array[], int n);
double hyperg(double a, double b, double x);
int airy(double x, double *ai, double *aip, double *bi, double *bip);
double polevl(double x, double coef[], int N);
double p1evl(double x, double coef[], int N);
double i0(double x);
double i0e(double x);
double i1(double x);
double i1e(double x);
double k0(double x);
double k0e(double x);
double k1(double x);
double k1e(double x);
double iv(double nu, double x);
double jv(double nu, double x);
double yv(double nu, double x);
double kn(int n, double x);
double gam(double x);
double lgam(double x);
extern int sgngam;
//! \endcond
#endif // #ifndef BESSEL_INTERNAL_H
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