ROOT_528-00b_version: math/mathmore/src/QuantFuncMathMore.cxx Source File

00001 // @(#)root/mathmore:$Id: QuantFuncMathMore.cxx 36536 2010-11-08 15:03:24Z moneta $
00002 // Authors: L. Moneta, A. Zsenei   08/2005 
00003 
00004 #include "gsl/gsl_cdf.h"
00005 
00006 
00007 namespace ROOT {
00008 namespace Math {
00009 
00010 
00011 
00012   double tdistribution_quantile_c(double z, double r) {
00013 
00014     return gsl_cdf_tdist_Qinv(z, r);
00015 
00016   }
00017 
00018 
00019 
00020   double tdistribution_quantile(double z, double r) {
00021 
00022     return gsl_cdf_tdist_Pinv(z, r);
00023 
00024   }
00025 
00026 } // namespace Math
00027 
00028 namespace MathMore  {
00029    // re-impelment some function already existing in MathCore (defined in ROOT::Math namespace)
00030 
00031   double chisquared_quantile(double z, double r) {
00032 
00033     return gsl_cdf_chisq_Pinv(z, r);
00034 
00035   }
00036 
00037 
00038   double gamma_quantile(double z, double alpha, double theta) {
00039 
00040     return gsl_cdf_gamma_Pinv(z, alpha, theta);
00041 
00042   }
00043 
00044 } // namespace MathMore
00045 
00046 } // namespace ROOT