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CLHEP/GenericFunctions/BetaDistribution.hh
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1// -*- C++ -*-
2// $Id:
3//---------------------BetaDistribution-------------------------------------//
4// //
5// Class Beta, x^(a-1)(1-x)^beta-1 Gamma(a+b)/Gamma(a)/Gamma(b); //
6// Joe Boudreau, Jan 2007 //
7// //
8//--------------------------------------------------------------------------//
9#ifndef BetaDistribution_h
10#define BetaDistribution_h 1
14#define _BETADISTRIBUTION_REVISED_ 1
15namespace Genfun {
16
22
24
25 public:
26
27 // Constructor
29
30 // Copy constructor
32
33 // Destructor
34 virtual ~BetaDistribution();
35
36 // Retreive function value
37 virtual double operator ()(double argument) const;
38 virtual double operator ()(const Argument & a) const {return operator() (a[0]);}
39
40 // Get the paramter alpha
41 Parameter & alpha();
42
43 // Get the paramter alpha
44 Parameter & beta();
45
46 private:
47
48 // It is illegal to assign an adjustable constant
49 const BetaDistribution & operator=(const BetaDistribution &right);
50
51 // Here are the two parameters alpha and beta:
52
53 Parameter _alpha;
54 Parameter _beta;
55
56
57 // This function has a LogGamma Function;
58 LogGamma _logGamma;
59
60
61 };
62} // namespace Genfun
63#endif
#define FUNCTION_OBJECT_DEF(classname)
virtual double operator()(double argument) const