numRecipes

Class RandomDouble

java.lang.Object

numRecipes.RandomDouble

All Implemented Interfaces:

java.io.Serializable

public class RandomDouble
extends java.lang.Object
implements java.io.Serializable

   Ported to Java by Shigeru Yoshida for the IceCube MC.
                     2002.12.1                          
                     syoshida@hepburn.s.chiba-u.ac.jp
   Before using, initialize the state by the constrctor RandomDouble(long)
   in this Java version.

   Blow is the notice of the original C source code.
   -----------------------------------------------------------
   A C-program for MT19937, with initialization improved 2002/2/10.
   Coded by Takuji Nishimura and Makoto Matsumoto.
   This is a faster version by taking Shawn Cokus's optimization,
   Matthe Bellew's simplification, Isaku Wada's real version.

   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.keio.ac.jp/matumoto/emt.html
   email: matumoto@math.keio.ac.jp
   -----------------------------------------------------------
  

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RandomDouble(long s) Constructor to initialize state[N] with a seed

Method Summary

Methods

Modifier and Type	Method and Description
long	MixBits(long u, long v)
double	nextDouble() generates a random number on (0,1)-real-interval
void	nextState()
long	Twist(long u, long v)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RandomDouble

public RandomDouble(long s)

Constructor to initialize state[N] with a seed

Method Detail

MixBits

public long MixBits(long u,
           long v)

Twist

public long Twist(long u,
         long v)

nextState

public void nextState()

nextDouble

public double nextDouble()

generates a random number on (0,1)-real-interval