Zeta
cern.jet.random

Class Zeta

  • All Implemented Interfaces:
    DoubleFunction, IntFunction, Serializable, Cloneable


    public class Zetaextends AbstractDiscreteDistribution
    Zeta distribution.

    Valid parameter ranges: ro > 0 and pk >= 0.

    If either ro > 100 or k > 10000 numerical problems in computing the theoretical moments arise, therefore ro <= 100 and k <= 10000 are recommended.

    Instance methods operate on a user supplied uniform random number generator; they are unsynchronized.

    Static methods operate on a default uniform random number generator; they are synchronized.

    Implementation:

    Method: Acceptance/Rejection. High performance implementation.
    This is a port and adaption of Zeta.c from the C-RAND / WIN-RAND library. C-RAND's implementation, in turn, is based upon

    J. Dagpunar (1988): Principles of Random Variate Generation, Clarendon Press, Oxford.

    See Also:
    Serialized Form
    • Constructor Detail

      • Zeta

        public Zeta(double ro,    double pk,    RandomEngine randomGenerator)
        Constructs a Zeta distribution.
    • Method Detail

      • setState

        public void setState(double ro,            double pk)
        Sets the parameters.
      • staticNextInt

        public static int staticNextInt(double ro,                double pk)
        Returns a random number from the distribution.
      • toString

        public String toString()
        Returns a String representation of the receiver.
        Overrides:
        toString in class Object

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