Documentation API of the 'cern.jet.random.engine.DRand' Java class

Class DRand

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

    public class DRandextends RandomEngine
    Quick medium quality uniform pseudo-random number generator. Produces uniformly distributed int's and long's in the closed intervals [Integer.MIN_VALUE,Integer.MAX_VALUE] and [Long.MIN_VALUE,Long.MAX_VALUE], respectively, as well as float's and double's in the open unit intervals (0.0f,1.0f) and (0.0,1.0), respectively.

    The seed can be any integer satisfying 0 < 4*seed+1 < 232. In other words, there must hold seed >= 0 && seed < 1073741823.

    Quality: This generator follows the multiplicative congruential method of the form

    z(i+1) = a * z(i) (mod m) with a=663608941 (=0X278DDE6DL), m=232.
    z(i) assumes all different values 0 < 4*seed+1 < m during a full period of 230.

    Performance: TO_DO

    Implementation: TO_DO

    Note that this implementation is not synchronized.

    See Also:
    MersenneTwister, Random, Serialized Form

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