3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
13 class AliMath : public TObject
16 AliMath(); // Default constructor
17 ~AliMath(); // Destructor
18 Double_t Gamma(Double_t z); // Standard gamma function Gamma(z)
19 Double_t Gamma(Double_t a,Double_t x); // Incomplete gamma function P(a,x)
20 Double_t LnGamma(Double_t z); // Compute ln[Gamma(z)]
21 Double_t Erf(Double_t x); // Error function erf(x)
22 Double_t Erfc(Double_t x); // Complementary error function erfc(x)
23 Double_t Prob(Double_t chi2,Int_t ndf); // Compute Chi-squared probability
24 Double_t BesselI(Int_t n,Double_t x); // Compute integer order modified Bessel function I_n(x)
25 Double_t BesselK(Int_t n,Double_t x); // Compute integer order modified Bessel function K_n(x)
28 Double_t GamSer(Double_t a,Double_t x); // Compute P(a,x) via serial representation
29 Double_t GamCf(Double_t a,Double_t x); // Compute P(a,x) via continued fractions
30 Double_t BesselI0(Double_t x); // Compute modified Bessel function I_0(x)
31 Double_t BesselK0(Double_t x); // Compute modified Bessel function K_0(x)
32 Double_t BesselI1(Double_t x); // Compute modified Bessel function I_1(x)
33 Double_t BesselK1(Double_t x); // Compute modified Bessel function K_1(x)
35 ClassDef(AliMath,1) // Various mathematical tools for physics analysis.