Class GammaUpperIncomplete

All Implemented Interfaces:
Function<Vector,Double>, BivariateRealFunction, RealScalarFunction

public class GammaUpperIncomplete extends AbstractBivariateRealFunction
The Upper Incomplete Gamma function is defined as: \[ \Gamma(s,x) = \int_x^{\infty} t^{s-1}\,e^{-t}\,{\rm d}t = Q(s,x) \times \Gamma(s) \] The integrand has the same form as the Gamma function, but the lower limit of the integration is a variable. The upper limit is fixed.
See Also:
  • Constructor Details

    • GammaUpperIncomplete

      public GammaUpperIncomplete()
  • Method Details

    • evaluate

      public double evaluate(double s, double x)
      Compute Γ(s,x).
      s - s > 0
      x - x ≥ 0