Class MersenneTwister

  • All Implemented Interfaces:
    RandomLongGenerator, RandomNumberGenerator, Seedable

    public class MersenneTwister
    extends Object
    implements RandomLongGenerator
    Mersenne Twister is one of the best pseudo random number generators available. It was invented by Makoto Matsumoto and Takuji Nishimura in 1997. This implementation is the MT19937 version that produces uniformly 32-bit integers. It is by-and-large a Java translation of the 2002-01-26 version of the C by Makoto Matsumoto and Takuji Nishimura.

    Here is their copyright notice.

        A C-program for MT19937, with initialization improved 2002/1/26.
      Coded by Takuji Nishimura and Makoto Matsumoto.
    
      Before using, initialize the state by using init_genrand(seed)
      or init_by_array(init_key, key_length).
    
      Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
      All rights reserved.
    
      Redistribution and use in source and binary forms, with or without
      modification, are permitted provided that the following conditions
      are met:
    
        1. Redistributions of source code must retain the above copyright
           notice, this list of conditions and the following disclaimer.
    
        2. Redistributions in binary form must reproduce the above copyright
           notice, this list of conditions and the following disclaimer in the
           documentation and/or other materials provided with the distribution.
    
        3. The names of its contributors may not be used to endorse or promote
           products derived from this software without specific prior written
           permission.
    
      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
      CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
      EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
      PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
      PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
      LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
      NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
      SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    
    
      Any feedback is very welcome.
      http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html
      email: m-mat@math.sci.hiroshima-u.ac.jp
     
    See Also:
    • Constructor Detail

      • MersenneTwister

        public MersenneTwister()
        Constructs a random number generator to sample uniformly from [0, 1).
      • MersenneTwister

        public MersenneTwister​(long... seeds)
        Constructs a random number generator to sample uniformly from [0, 1).
        Parameters:
        seeds - the seeds
      • MersenneTwister

        public MersenneTwister​(MersenneTwisterParam param)
        Constructs a new instance, which uses parameters and the state contained in the given MersenneTwisterParam instance.
        Parameters:
        param - the parameter for creating this instance
    • Method Detail

      • seed

        public void seed​(long... seeds)
        Description copied from interface: Seedable
        Seed the random number/vector/scenario generator to produce repeatable experiments.
        Specified by:
        seed in interface Seedable
        Parameters:
        seeds - the seeds