Stochastic Simulation in Java

This is the base class for all generators of discrete random variates over the set of integers. More...
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 
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.
RandomVariateGenInt  (  RandomStream  s, 
DiscreteDistributionInt  dist  
) 
Creates a new random variate generator for the discrete distribution dist
, using stream s
.
s  random stream used for generating uniforms 
dist  discrete distribution object of the generated values 
DiscreteDistributionInt getDistribution  (  ) 
Returns the umontreal.ssj.probdist.DiscreteDistributionInt used by this generator.
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.
v  array into which the variates will be stored 
start  starting index, in v , of the new variates 
n  number of variates being generated 
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.
n  number of variates to generate 
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.