Class VonMises

  • All Implemented Interfaces:
    DoubleFunction, IntFunction, java.io.Serializable, java.lang.Cloneable

    public class VonMises
    extends AbstractContinousDistribution
    Von Mises distribution.

    Valid parameter ranges: k > 0.

    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.
    This is a port of mwc.c from the C-RAND / WIN-RAND library. C-RAND's implementation, in turn, is based upon

    D.J. Best, N.I. Fisher (1979): Efficient simulation of the von Mises distribution, Appl. Statist. 28, 152-157.

    Version:
    1.0, 09/24/99
    See Also:
    Serialized Form
    • Field Detail

      • my_k

        protected double my_k
      • k_set

        private double k_set
      • tau

        private double tau
      • rho

        private double rho
      • r

        private double r
      • shared

        protected static VonMises shared
    • Constructor Detail

      • VonMises

        public VonMises​(double freedom,
                        RandomEngine randomGenerator)
        Constructs a Von Mises distribution. Example: k=1.0.
        Throws:
        java.lang.IllegalArgumentException - if k <= 0.0.
    • Method Detail

      • nextDouble

        public double nextDouble​(double k)
        Returns a random number from the distribution; bypasses the internal state.
        Throws:
        java.lang.IllegalArgumentException - if k <= 0.0.
      • setState

        public void setState​(double k)
        Sets the distribution parameter.
        Throws:
        java.lang.IllegalArgumentException - if k <= 0.0.
      • staticNextDouble

        public static double staticNextDouble​(double freedom)
        Returns a random number from the distribution.
        Throws:
        java.lang.IllegalArgumentException - if k <= 0.0.
      • toString

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

        private static void xstaticSetRandomGenerator​(RandomEngine randomGenerator)
        Sets the uniform random number generated shared by all static methods.
        Parameters:
        randomGenerator - the new uniform random number generator to be shared.