New version of the code, see history.txt for more details

[u/mrichter/AliRoot.git] / RALICE / AliMath.h

diff --git a/RALICE/AliMath.h b/RALICE/AliMath.h
index 4b3485da5d04dc78c500a7e0aa786fab65878463..8560b5caa9e3404631b366cfc2c2a645111f8156 100644 (file)
--- a/RALICE/AliMath.h
+++ b/RALICE/AliMath.h
@@ -13,18 +13,24 @@
 class AliMath : public TObject
 {
  public:
-  AliMath();                            // Default constructor
-  ~AliMath();                           // Destructor
-  Float_t Gamma(Float_t z);             // Standard gamma function Gamma(z)
-  Float_t Gamma(Float_t a,Float_t x);   // Incomplete gamma function P(a,x)
-  Float_t LnGamma(Float_t z);           // Compute ln[Gamma(z)]
-  Float_t Erf(Float_t x);               // Error function erf(x)
-  Float_t Erfc(Float_t x);              // Complementary error function erfc(x)
-  Float_t Prob(Float_t chi2,Int_t ndf); // Compute Chi-squared probability
+  AliMath();                              // Default constructor
+  ~AliMath();                             // Destructor
+  Double_t Gamma(Double_t z);             // Standard gamma function Gamma(z)
+  Double_t Gamma(Double_t a,Double_t x);  // Incomplete gamma function P(a,x)
+  Double_t LnGamma(Double_t z);           // Compute ln[Gamma(z)]
+  Double_t Erf(Double_t x);               // Error function erf(x)
+  Double_t Erfc(Double_t x);              // Complementary error function erfc(x)
+  Double_t Prob(Double_t chi2,Int_t ndf); // Compute Chi-squared probability
+  Double_t BesselI(Int_t n,Double_t x);   // Compute integer order modified Bessel function I_n(x)
+  Double_t BesselK(Int_t n,Double_t x);   // Compute integer order modified Bessel function K_n(x)
  
  protected:
-  Float_t GamSer(Float_t a,Float_t x);  // Compute P(a,x) via serial representation
-  Float_t GamCf(Float_t a,Float_t x);   // Compute P(a,x) via continued fractions
+  Double_t GamSer(Double_t a,Double_t x); // Compute P(a,x) via serial representation
+  Double_t GamCf(Double_t a,Double_t x);  // Compute P(a,x) via continued fractions
+  Double_t BesselI0(Double_t x);          // Compute modified Bessel function I_0(x)
+  Double_t BesselK0(Double_t x);          // Compute modified Bessel function K_0(x)
+  Double_t BesselI1(Double_t x);          // Compute modified Bessel function I_1(x)
+  Double_t BesselK1(Double_t x);          // Compute modified Bessel function K_1(x)
  
  ClassDef(AliMath,1) // Various mathematical tools for physics analysis.