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Class template beta_distribution

boost::random::beta_distribution

Synopsis

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

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

  // member classes/structs/unions

  class param_type {
  public:
    // types
    typedef beta_distribution ;

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

    // public member functions
    RealType () ;
    RealType () ;

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

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

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

  // friend functions
  template<typename CharT, typename Traits> 
    CharT, Traits > & 
    (CharT, Traits > &, 
               const beta_distribution &);
  template<typename CharT, typename Traits> 
    CharT, Traits > & 
    (CharT, Traits > &, 
               const beta_distribution &);
  bool (const beta_distribution &, const beta_distribution &);
  bool (const beta_distribution &, const 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. (RealType alpha = , RealType beta = );

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

    Requires: alpha > 0, beta > 0

  2. (const param_type & param);

    Constructs an beta_distribution from its parameters.

beta_distribution public member functions

  1. template<typename URNG> RealType (URNG & urng) ;

    Returns a random variate distributed according to the beta distribution.

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

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

  3. RealType () ;

    Returns the "alpha" parameter of the distribution.

  4. RealType () ;

    Returns the "beta" parameter of the distribution.

  5. RealType () ;

    Returns the smallest value that the distribution can produce.

  6. RealType () ;

    Returns the largest value that the distribution can produce.

  7. param_type () ;

    Returns the parameters of the distribution.

  8. void (const param_type & param);

    Sets the parameters of the distribution.

  9. void ();

    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> 
      CharT, Traits > & 
      (CharT, Traits > & os, 
                 const beta_distribution & wd);

    Writes an beta_distribution to a std::ostream.

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

    Reads an beta_distribution from a std::istream.

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

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

  4. bool (const beta_distribution & lhs, const 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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