Class template discrete_distribution

boost::compute::discrete_distribution — Produces random integers on the interval [0, n), where probability of each integer is given by the weight of the ith integer divided by the sum of all weights.

Synopsis

// In header: <boost/compute/random/discrete_distribution.hpp>

template<typename IntType = uint_> 
class discrete_distribution {
public:
  // types
  typedef IntType result_type;

  // construct/copy/destruct
  template<typename InputIterator> 
    discrete_distribution(InputIterator, InputIterator);
  ~discrete_distribution();

  // public member functions
  result_type n() const;
  ::std::vector< double > probabilities() const;
  template<typename OutputIterator, typename Generator> 
    void generate(OutputIterator, OutputIterator, Generator &, 
                  command_queue &);
};

Description

The following example shows how to setup a discrete distribution to produce 0 and 1 with equal probability

`discrete_distribution` public construct/copy/destruct

template<typename InputIterator> 
  discrete_distribution(InputIterator first, InputIterator last);

Creates a new discrete distribution with weights given by the range [first, last)

```
~discrete_distribution();
```
Destroys the discrete_distribution object.

`discrete_distribution` public member functions

```
result_type n() const;
```
Returns the value of n.

::std::vector< double > probabilities() const;

Returns the probabilities.

template<typename OutputIterator, typename Generator> 
  void generate(OutputIterator first, OutputIterator last, 
                Generator & generator, command_queue & queue);

Generates uniformily distributed integers and stores them to the range [first, last).

Boost C++ Libraries