javax.realtime.DSS
Class Normal

java.lang.Object
  javax.realtime.DSS.Normal

public class Normal

extends java.lang.Object

Erand objects represent normally distributed pseudo random number streams.

Author:

gary

Field Summary

protected double	mean Mean of this normal distribution
protected double	standardDeviation Standard deviation of this distribution

Constructor Summary

Normal(double mean, double standardDeviation)

Method Summary

double	draw() Draw the next number in this stream.
double	nonDeterministicDraw(int howMany) Draw several numbers from this stream.
double	threeChoice() In a normal distribution probability of being in the range mean +/- one standard deviation is about 67%

Methods inherited from class java.lang.Object

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

Field Detail

mean

protected double mean

Mean of this normal distribution

standardDeviation

protected double standardDeviation

Standard deviation of this distribution

Constructor Detail

Normal

public Normal(double mean,
              double standardDeviation)

Method Detail

draw

public double draw()

Draw the next number in this stream.

Returns:

The number drawn

nonDeterministicDraw

public double nonDeterministicDraw(int howMany)

Draw several numbers from this stream.

• If using native Java, return a single number, independent of the howMany parameter
• If using JPF, nondeterminstically select from howMany drawn numbers.

Parameters:

howMany - The number of numbers to be drawn.

Returns:

the number nondeterministically selected

threeChoice

public double threeChoice()

In a normal distribution probability of being in the range mean +/- one standard deviation is about 67%

Returns:

pseudo randomly generated number