chisqinv.c

该文件为c++的数学函数库!是一个非常有用的编程工具.它含有各种数学函数,为科学计算、工程应用等程序编写提供方便！

/* cdf/chisqinv.c
 * 
 * Copyright (C) 2003 Brian Gough
 * 
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
 */

#include <config.h>
#include <gsl/gsl_cdf.h>
#include <gsl/gsl_sf_gamma.h>

double
gsl_cdf_chisq_Pinv (const double P, const double nu)
{
  return gsl_cdf_gamma_Pinv (P, nu / 2, 2.0);
}

double
gsl_cdf_chisq_Qinv (const double Q, const double nu)
{
  return gsl_cdf_gamma_Qinv (Q, nu / 2, 2.0);
}