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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 beta_distribution ;

    // construct/copy/destruct
    ( = ,  = );

    // public member functions
     () ;
     () ;

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

  // construct/copy/destruct
  ( = ,  = );
  (param_type &);

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

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

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 construct/copy/destruct

  1. ( alpha = ,  beta = );

    Constructs an beta_distribution from its "alpha" and "beta" parameters.

    Requires: alpha > 0, beta > 0

  2. (param_type & param);

    Constructs an beta_distribution from its parameters.

beta_distribution public member functions

  1. template<typename URNG>  ( urng) ;

    Returns a random variate distributed according to the beta distribution.

  2. template<typename URNG> 
       ( urng, param_type & param) ;

    Returns a random variate distributed accordint to the beta distribution with parameters specified by param.

  3.  () ;

    Returns the "alpha" parameter of the distribution.

  4.  () ;

    Returns the "beta" parameter of the distribution.

  5.  () ;

    Returns the smallest value that the distribution can produce.

  6.  () ;

    Returns the largest value that the distribution can produce.

  7. param_type () ;

    Returns the parameters of the distribution.

  8.  (param_type & param);

    Sets the parameters of the distribution.

  9.  ();

    Effects: Subsequent uses of the distribution do not depend on values produced by any engine prior to invoking reset.

beta_distribution friend functions

  1. template<typename CharT, typename Traits> 
       
      ( os, 
                 beta_distribution & wd);

    Writes an beta_distribution to a std::ostream.

  2. template<typename CharT, typename Traits> 
       
      ( is, 
                 beta_distribution & wd);

    Reads an beta_distribution from a std::istream.

  3.  (beta_distribution & lhs, beta_distribution & rhs);

    Returns true if the two instances of beta_distribution will return identical sequences of values given equal generators.

  4.  (beta_distribution & lhs, beta_distribution & rhs);

    Returns true if the two instances of beta_distribution will return different sequences of values given equal generators.


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