Class template beta_distribution

boost::random::beta_distribution

Synopsis

// In header: <boost/random/beta_distribution.hpp>

template<typename RealType> 
class beta_distribution {
public:
  // types
  typedef  ;
  typedef  ; 

  // member classes/structs/unions

  class param_type {
  public:
    // types
    typedef  ;

    // public member functions
    ( = ,  = );
     () ;
     () ;

    // friend functions
    template<typename CharT, typename Traits> 
       
      (, );
    template<typename CharT, typename Traits> 
       
      (, );
     (, );
     (, );
  };

  // public member functions
  ( = ,  = );
  (param_type &);
  template<typename URNG>  () ;
  template<typename URNG> 
     (, param_type &) ;
   () ;
   () ;
   () ;
   () ;
  param_type () ;
   (param_type &);
   ();

  // friend functions
  template<typename CharT, typename Traits> 
     
    (, 
               );
  template<typename CharT, typename Traits> 
     
    (, 
               );
   (, );
   (, );
};

Description

The beta distribution is a real-valued distribution which produces values in the range [0, 1]. It has two parameters, alpha and beta.

It has .

`beta_distribution` public member functions

```
( alpha = ,  beta = );
```
Constructs an beta_distribution from its "alpha" and "beta" parameters.

Requires: alpha > 0, beta > 0
```
(param_type & param);
```
Constructs an beta_distribution from its parameters.
```
template<typename URNG>  ( urng) ;
```
Returns a random variate distributed according to the beta distribution.
```
template<typename URNG> 
   ( urng, param_type & param) ;
```
Returns a random variate distributed accordint to the beta distribution with parameters specified by param.
```
 () ;
```
Returns the "alpha" parameter of the distribution.
```
 () ;
```
Returns the "beta" parameter of the distribution.
```
 () ;
```
Returns the smallest value that the distribution can produce.
```
 () ;
```
Returns the largest value that the distribution can produce.
```
param_type () ;
```
Returns the parameters of the distribution.
```
 (param_type & param);
```
Sets the parameters of the distribution.
```
 ();
```
Effects: Subsequent uses of the distribution do not depend on values produced by any engine prior to invoking reset.

`beta_distribution` friend functions

template<typename CharT, typename Traits> 
   
  ( os, 
              wd);

Writes an beta_distribution to a std::ostream.

template<typename CharT, typename Traits> 
   
  ( is, 
              wd);

Reads an beta_distribution from a std::istream.

```
 ( lhs,  rhs);
```
Returns true if the two instances of beta_distribution will return identical sequences of values given equal generators.
```
 ( lhs,  rhs);
```
Returns true if the two instances of beta_distribution will return different sequences of values given equal generators.

Class template beta_distribution

Synopsis

Description

beta_distribution public member functions

beta_distribution friend functions

`beta_distribution` public member functions

`beta_distribution` friend functions