Parallel Colt 0.7.2

cern.jet.random.tdouble
Class Hyperbolic

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.Hyperbolic
All Implemented Interfaces:
DoubleFunction, IntFunction, Serializable, Cloneable

public class Hyperbolic
extends AbstractContinousDoubleDistribution

Hyperbolic distribution.

Valid parameter ranges: alpha > 0 and beta > 0.

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: Non-Universal Rejection. High performance implementation.
This is a port of hyplc.c from the C-RAND / WIN-RAND library. C-RAND's implementation, in turn, is based upon

L. Devroye (1986): Non-Uniform Random Variate Generation, Springer Verlag, New York.

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
Hyperbolic(double alpha, double beta, DoubleRandomEngine randomGenerator)
          Constructs a Beta distribution.
 
Method Summary
 double nextDouble()
          Returns a random number from the distribution.
 double nextDouble(double alpha, double beta)
          Returns a hyperbolic distributed random number; bypasses the internal state.
 void setState(double alpha, double beta)
          Sets the parameters.
static double staticNextDouble(double alpha, double beta)
          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

Hyperbolic

public Hyperbolic(double alpha,
                  double beta,
                  DoubleRandomEngine randomGenerator)
Constructs a Beta 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 alpha,
                         double beta)
Returns a hyperbolic distributed random number; bypasses the internal state.


setState

public void setState(double alpha,
                     double beta)
Sets the parameters.


staticNextDouble

public static double staticNextDouble(double alpha,
                                      double beta)
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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