ExponentialPower
cern.jet.random

Class ExponentialPower

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


    public class ExponentialPowerextends AbstractContinousDistribution
    Exponential Power distribution.

    Valid parameter ranges: tau >= 1.

    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: Non-universal rejection method for logconcave densities.
    This is a port of epd.c from the C-RAND / WIN-RAND library. C-RAND's implementation, in turn, is based upon

    L. Devroye (1986): Non-Uniform Random Variate Generation , Springer Verlag, New York.

    See Also:
    Serialized Form
    • Constructor Detail

      • ExponentialPower

        public ExponentialPower(double tau,                RandomEngine randomGenerator)
        Constructs an Exponential Power distribution. Example: tau=1.0.
        Throws:
        IllegalArgumentException - if tau < 1.0.
    • Method Detail

      • nextDouble

        public double nextDouble(double tau)
        Returns a random number from the distribution; bypasses the internal state.
        Throws:
        IllegalArgumentException - if tau < 1.0.
      • setState

        public void setState(double tau)
        Sets the distribution parameter.
        Throws:
        IllegalArgumentException - if tau < 1.0.
      • staticNextDouble

        public static double staticNextDouble(double tau)
        Returns a random number from the distribution.
        Throws:
        IllegalArgumentException - if tau < 1.0.
      • toString

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

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