numRecipes
クラス RandomDouble

java.lang.Object
  |
  +--numRecipes.RandomDouble

public class RandomDouble
extends java.lang.Object

    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
    -----------------------------------------------------------
   


フィールドの概要
private  int initf
           
private  int left
           
private static long LMASK
           
private static int M
           
private static long MATRIX_A
           
private static int N
           
private  int selectedIndex
           
private  long[] state
           
private static long UMASK
           
 
コンストラクタの概要
RandomDouble(long s)
          Constructor to initialize state[N] with a seed
 
メソッドの概要
 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)
           
 
クラス java.lang.Object から継承したメソッド
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

フィールドの詳細

N

private static final int N
関連項目:
定数フィールド値

M

private static final int M
関連項目:
定数フィールド値

MATRIX_A

private static final long MATRIX_A
関連項目:
定数フィールド値

UMASK

private static final long UMASK
関連項目:
定数フィールド値

LMASK

private static final long LMASK
関連項目:
定数フィールド値

state

private long[] state

left

private int left

initf

private int initf

selectedIndex

private int selectedIndex
コンストラクタの詳細

RandomDouble

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

メソッドの詳細

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