This class implements random variate generators for the exponential distribution. More...

Inheritance diagram for ExponentialGen:

Collaboration diagram for ExponentialGen:

Public Member Functions
	ExponentialGen (RandomStream s, double lambda)
	Creates an exponential random variate generator with parameter \(\lambda\) = `lambda`, using stream `s`.

	ExponentialGen (RandomStream s, ExponentialDist dist)
	Creates a new generator for the exponential distribution `dist` and stream `s`.

double	getLambda ()
	Returns the \(\lambda\) associated with this object.

Public Member Functions inherited from RandomVariateGen
	RandomVariateGen (RandomStream s, Distribution dist)
	Creates a new random variate generator from the distribution `dist`, using stream `s`. More...

double	nextDouble ()
	Generates a random number from the continuous distribution contained in this object. More...

void	nextArrayOfDouble (double[] v, int start, int n)
	Generates `n` random numbers from the continuous distribution contained in this object. More...

double []	nextArrayOfDouble (int n)
	Generates `n` random numbers from the continuous distribution contained in this object, and returns them in a new array of size `n`. More...

RandomStream	getStream ()
	Returns the umontreal.ssj.rng.RandomStream used by this generator. More...

void	setStream (RandomStream stream)
	Sets the umontreal.ssj.rng.RandomStream used by this generator to `stream`.

Distribution	getDistribution ()
	Returns the umontreal.ssj.probdist.Distribution used by this generator. More...

String	toString ()
	Returns a `String` containing information about the current generator.

Static Public Member Functions
static double	nextDouble (RandomStream s, double lambda)
	Uses inversion to generate a new exponential variate with parameter \(\lambda= \) `lambda`, using stream `s`.

Protected Member Functions
void	setParams (double lam)
	Sets the parameter \(\lambda= \) `lam` of this object.

Protected Attributes
double	lambda

Protected Attributes inherited from RandomVariateGen
RandomStream	stream

Distribution	dist

Detailed Description

This class implements random variate generators for the exponential distribution.

The density is

\[ f(x) = \lambda e^{-\lambda x} \qquad\mbox{ for }x\ge0, \]

where \(\lambda> 0\).

The (non-static) nextDouble method simply calls inverseF on the distribution.

The documentation for this class was generated from the following file:

Public Member Functions