hep.lcd.contrib.util.functions
Class GaussianBoxRandom

java.lang.Object
  |
  +--hep.lcd.contrib.util.functions.GaussianBoxRandom

public class GaussianBoxRandom

extends Object

GaussianBoxRandom generates random numbers from a box distribution convoluted with a Gaussian. This is the form of the data produced from the energy distribution of a single particle C from the production mode e+e- -> A + A followed by the decay A -> B + C. The resolution will be of the form sigma / E = constant + slope / sqrt(E).

Version:

1.0

Author:

David L. Wagner

Source Code:

GaussianBoxRandom.java

Constructor Summary

GaussianBoxRandom(double xmin, double xmax, double slope)
Constructor which assumes a zero constant term.

GaussianBoxRandom(double xmin, double xmax, double constant, double slope)
Constructor which uses all four parameters.

GaussianBoxRandom(double xmin, double xmax, double constant, double slope, long seed)
Full form of the constructor which allows the seed to specified as well.

Method Summary

double	nextDouble() Return the next random number as a double.
float	nextFloat() Return the next random number as a floating point number.

Methods inherited from class java.lang.Object

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

Constructor Detail

GaussianBoxRandom

public GaussianBoxRandom(double xmin,
                         double xmax,
                         double slope)

Constructor which assumes a zero constant term.

Parameters:

xmin - minimum value for the box

xmax - maximum value for the box

slope - slope term of the resolution

GaussianBoxRandom

public GaussianBoxRandom(double xmin,
                         double xmax,
                         double constant,
                         double slope)

Constructor which uses all four parameters.

Parameters:

xmin - minimum value for the box

xmax - maximum value for the box

constant - constant term of the resolution

slope - slope term of the resolution

GaussianBoxRandom

public GaussianBoxRandom(double xmin,
                         double xmax,
                         double constant,
                         double slope,
                         long seed)

Full form of the constructor which allows the seed to specified as well.

Parameters:

xmin - minimum value for the box

xmax - maximum value for the box

constant - constant term of the resolution

slope - slope term of the resolution

seed - seed for the random number generator

Method Detail

nextFloat

public float nextFloat()

Return the next random number as a floating point number.

nextDouble

public double nextDouble()

Return the next random number as a double.