com.fasteasytrade.JRandTest.Tests
Class Squeeze

java.lang.Object
  com.fasteasytrade.JRandTest.Tests.Base
      com.fasteasytrade.JRandTest.Tests.Squeeze

public class Squeeze

extends Base

Squeeze from DieHard

SQUEEZE TEST: How many iterations of k=k*uni()+1 are required to squeeze k down to 1, starting with k=2147483647=2^31-1.

The exact distribution of the required j is used, with a chi-square test based on no_trials=100,000 tries.

The mean of j is 23.064779, with variance 23.70971151.

Author:

Zur Aougav

Nested Class Summary

Nested classes inherited from class com.fasteasytrade.JRandTest.Tests.Base

Base.point

Field Summary

(package private) double	chsq
(package private) double[]	Ef
(package private) int[]	f
(package private) int	i
(package private) int	j
(package private) long	k
(package private) int	no_trials
(package private) double	ratio
(package private) double	std
(package private) double	tmp

Fields inherited from class com.fasteasytrade.JRandTest.Tests.Base

df, DIM, PI, rs, UNIMAX, vecOutputDestinations

Constructor Summary

Squeeze()

Method Summary

void	help() help method to be implemented by each test class.
void	test(String filename) test method to be implemented by each test class.

Methods inherited from class com.fasteasytrade.JRandTest.Tests.Base

ABS, ABS, addOutputDestination, avg, chisq, Chisq, chitest, closeInputStream, d4, d4d_d, d4d, exp, exp, G, isOpen, KStest, log, MAX, MAX, MIN, MIN, openInputStream, phi, Phi, Poisson_fit, Poisson, pow, printf, puts, qsort, qsort, qsort, r2_double, read32BitsAsDouble, readByte, readInt, readLong, registerInput, removeOutputDestination, showbit, SIGN, SIGN, sqrt, sqrt, stdev, uni

Methods inherited from class java.lang.Object

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

Field Detail

no_trials

final int no_trials

See Also:

Constant Field Values

ratio

final double ratio

See Also:

Constant Field Values

std

final double std

i

int i

k

long k

j

int j

f

int[] f

Ef

double[] Ef

tmp

double tmp

chsq

double chsq

Constructor Detail

Squeeze

public Squeeze()

Method Detail

help

public void help()

Description copied from class: Base

help method to be implemented by each test class.

Overrides:

help in class Base

See Also:

Base.help()

test

public void test(String filename)
          throws Exception

Description copied from class: Base

test method to be implemented by each test class.

Overrides:

test in class Base

Parameters:

filename - is the filename to be read or the algorithm name.

Throws:

Exception

See Also:

Base.test(java.lang.String)