RandomVariateGenInt Class Reference

This is the base class for all generators of discrete random variates over the set of integers. More...

Inheritance diagram for RandomVariateGenInt:

Collaboration diagram for RandomVariateGenInt:

Public Member Functions
	RandomVariateGenInt (RandomStream s, DiscreteDistributionInt dist)
	Creates a new random variate generator for the discrete distribution dist, using stream s. More...
int	nextInt ()
	Generates a random number (an integer) from the discrete distribution contained in this object. More...
void	nextArrayOfInt (int[] v, int start, int n)
	Generates n random numbers from the discrete distribution contained in this object. More...
int []	nextArrayOfInt (int n)
	Generates n random numbers from the discrete distribution contained in this object, and returns them in a new array of size n. More...
DiscreteDistributionInt	getDistribution ()
	Returns the umontreal.ssj.probdist.DiscreteDistributionInt used by this generator. More...
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.

Additional Inherited Members
Protected Attributes inherited from RandomVariateGen
RandomStream	stream
Distribution	dist

Detailed Description

This is the base class for all generators of discrete random variates over the set of integers.

Similar to RandomVariateGen, except that the generators produce integers, via the nextInt method, instead of real numbers.

Constructor & Destructor Documentation

RandomVariateGenInt()

RandomVariateGenInt	(	RandomStream	s,
		DiscreteDistributionInt	dist
	)

Creates a new random variate generator for the discrete distribution dist, using stream s.

Parameters

s	random stream used for generating uniforms
dist	discrete distribution object of the generated values

Member Function Documentation

getDistribution()

DiscreteDistributionInt getDistribution

(

)

Returns the umontreal.ssj.probdist.DiscreteDistributionInt used by this generator.

Returns

the distribution associated to that object

nextArrayOfInt() [1/2]

void nextArrayOfInt	(	int []	v,
		int	start,
		int	n
	)

Generates n random numbers from the discrete distribution contained in this object.

The results are stored into the array v, starting from index start. By default, this method calls nextInt() n times, but one can reimplement it in subclasses for better efficiency.

Parameters

v	array into which the variates will be stored
start	starting index, in v, of the new variates
n	number of variates being generated

nextArrayOfInt() [2/2]

int [] nextArrayOfInt

(

int

n

)

Generates n random numbers from the discrete distribution contained in this object, and returns them in a new array of size n.

By default, this method calls nextInt() n times, but one can override it in subclasses for better efficiency.

Parameters

n	number of variates to generate

Returns

a new array with the generated numbers

nextInt()

int nextInt

(

)

Generates a random number (an integer) from the discrete distribution contained in this object.

By default, this method uses inversion by calling the inverseF method of the distribution object. Alternative generating methods are provided in subclasses.

Returns

the generated value

---

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

• RandomVariateGenInt.java