Parallel Colt 0.7.2

cern.jet.random.tdouble
Class Logarithmic

java.lang.Object
  extended by cern.colt.PersistentObject
      extended by cern.jet.random.tdouble.AbstractDoubleDistribution
          extended by cern.jet.random.tdouble.AbstractContinousDoubleDistribution
              extended by cern.jet.random.tdouble.Logarithmic
All Implemented Interfaces:
DoubleFunction, IntFunction, Serializable, Cloneable

public class Logarithmic
extends AbstractContinousDoubleDistribution

Logarithmic distribution.

Valid parameter ranges: 0 < p < 1.

Instance methods operate on a user supplied uniform random number generator; they are unsynchronized.

Static methods operate on a default uniform random number generator; they are synchronized.

Implementation:

Method: Inversion/Transformation.
This is a port of lsk.c from the C-RAND / WIN-RAND library. C-RAND's implementation, in turn, is based upon

A.W. Kemp (1981): Efficient generation of logarithmically distributed pseudo-random variables, Appl. Statist. 30, 249-253.

Version:
1.0, 09/24/99
Author:
wolfgang.hoschek@cern.ch
See Also:
Serialized Form

Field Summary
 
Fields inherited from class cern.colt.PersistentObject
serialVersionUID
 
Constructor Summary
Logarithmic(double p, DoubleRandomEngine randomGenerator)
          Constructs a Logarithmic distribution.
 
Method Summary
 double nextDouble()
          Returns a random number from the distribution.
 double nextDouble(double a)
          Returns a random number from the distribution; bypasses the internal state.
 void setState(double p)
          Sets the distribution parameter.
static double staticNextDouble(double p)
          Returns a random number from the distribution.
 String toString()
          Returns a String representation of the receiver.
 
Methods inherited from class cern.jet.random.tdouble.AbstractDoubleDistribution
apply, apply, clone, makeDefaultGenerator, nextInt
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Logarithmic

public Logarithmic(double p,
                   DoubleRandomEngine randomGenerator)
Constructs a Logarithmic distribution.

Method Detail

nextDouble

public double nextDouble()
Returns a random number from the distribution.

Specified by:
nextDouble in class AbstractDoubleDistribution

nextDouble

public double nextDouble(double a)
Returns a random number from the distribution; bypasses the internal state.


setState

public void setState(double p)
Sets the distribution parameter.


staticNextDouble

public static double staticNextDouble(double p)
Returns a random number from the distribution.


toString

public String toString()
Returns a String representation of the receiver.

Overrides:
toString in class Object

Parallel Colt 0.7.2

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