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Class simula.random.Negexp 

java.lang.Object
   |
   +----simula.random.Generator
           |
           +----simula.random.Negexp
public class Negexp
extends Generator
The class Negexp allows to draw real values according to an exponential distribution.

Constructor Index

o Negexp(double)
Creates a new exponential generator using the standard engine and the current time as seed.
o Negexp(long, double)
Creates a new exponential generator using the standard engine and the given seed.
o Negexp(RandomEngine, double)
Creates a new exponential generator using the given engine.

Method Index

o density(double)
Returns the value of the density in the given point.
o draw()
Draws a value from the generator.
o setParam(double)
Change the parameter of the exponential.
o type()
Returns the type of the extracted value.

Constructors

o Negexp 
 public Negexp(double l)
Creates a new exponential generator using the standard engine and the current time as seed.

Parameters:
l - Parameter of the exponential random variable.
o Negexp 
 public Negexp(long seed,
               double l)
Creates a new exponential generator using the standard engine and the given seed.

Parameters:
seed - Initial seed for the pseudo-random engine.
l - Parameter of the exponential random variable.
o Negexp 
 public Negexp(RandomEngine e,
               double l)
Creates a new exponential generator using the given engine.

Parameters:
e - Pseudo-random bit generator.
l - Parameter of the exponential random variable.

Methods

o density 
 public double density(double x)
Returns the value of the density in the given point.

Parameters:
x - Point to value the density of.
Returns:
the value of the density in the given point.
o draw 
 public Value draw()
Draws a value from the generator.

Returns:
An instance of Value that encapsulates a real value.
Overrides:
draw in class Generator
See Also:
RealValue, Value
o setParam 
 public void setParam(double l)
Change the parameter of the exponential.

Parameters:
l - Parameter of the exponential random variable.
o type 
 public int type()
Returns the type of the extracted value.

Overrides:
type in class Generator 
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