RWTRand<Generator>
Module: Essential Math Group: Statistics classes
Does not inherit
Local Index
Members
Synopsis
#include <rw/rand.h>
Description
Class RWTRand<Generator> is the abstract base class for the random number generator classes. The classes derived from RWTRand<Generator> generate random numbers from specific probability distributions. Each of these derived classes generates a random number from a uniform distribution on the interval [0, 1], and from this deviate derives a random number generator from the appropriate probability distribution. The template parameter Generator is a function object that provides this uniform [0, 1] deviate. Specifically, Generator is presumed to be an object that overloads the function call operator to return a uniform random number of type double between 0 and 1.
The class Generator must have the following semantics, where gen is of type Generator:
Default Constructor: | Generator gen; |
Function Call Operator: | double x = gen(); // 0 <= x <= 1 or 0 < x < 1 |
Public Constructors
RWTRand()
Uses the default constructor of class Generator to initialize the underlying uniform random number generator.
RWTRand(const RWTRand<Generator>& x);
Initializes the underlying uniform random number generator with x's.
RWTRand(const Generator& g);
Initializes the underlying uniform random number generator with g.
Public Member Functions
const Generator& generator() const;
Returns the underlying uniform random number generator as a const reference.
Generator& generator();
Returns a reference to the underlying uniform random number generator.
void setGenerator(const Generator& x);
Sets the underlying uniform random number generator to x.
void setGenerator(const RWTRand<Generator>& x);
Sets the underlying uniform random number generator to the underlying uniform random number generator of x.
Public Member Operator
virtual double operator()() = 0;
Function call operator. Defined by derived classes to return a random number from the appropriate probability distribution.
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