MyGamma Class Reference

#include <Gamma.hh>

Public Member Functions
	MyGamma ()
	~MyGamma ()
double	Gamma (double z)
double	Gamma (double a, double x)

Detailed Description

Definition at line 45 of file Gamma.hh.

Constructor & Destructor Documentation

MyGamma()

MyGamma::MyGamma

(

)

Definition at line 36 of file Gamma.cc.

{}

~MyGamma()

MyGamma::~MyGamma

(

)

Definition at line 38 of file Gamma.cc.

{}

Member Function Documentation

Gamma() [1/2]

double MyGamma::Gamma	(	double	a,
		double	x )

Definition at line 50 of file Gamma.cc.

{
  // Computation of the incomplete gamma function P(a,x)
  //
  // The algorithm is based on the formulas and code as denoted in
  // Numerical Recipes 2nd ed. on p. 210-212 (W.H.Press et al.).
  //
  //--- Nve 14-nov-1998 UU-SAP Utrecht
  
  if (a <= 0 || x <= 0) return 0;
  
  if (x < (a+1)) return GamSer(a,x);
  else           return GamCf(a,x);
}

Gamma() [2/2]

double MyGamma::Gamma

(

double

z

)

Definition at line 41 of file Gamma.cc.

{
  if (z <= 0)
      return 0;
 
  return std::tgamma(z);
}

Referenced by GVFlashShowerParameterisation::gam().

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The documentation for this class was generated from the following files:

• Gamma.hh
• Gamma.cc