Package dev.nm.analysis.function.special.gamma

Class GammaUpperIncomplete

java.lang.Object
dev.nm.analysis.function.rn2r1.AbstractRealScalarFunction
dev.nm.analysis.function.rn2r1.AbstractBivariateRealFunction
dev.nm.analysis.function.special.gamma.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).
      Parameters:
      s - s > 0
      x - x ≥ 0
      Returns:
      Γ(s,x)