Class template lognormal

Class template lognormal_distribution

boost::random::lognormal_distribution

Synopsis

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

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

  // member classes/structs/unions

  class param_type {
  public:
    // types
    typedef  ;

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

    // public member functions
     () ;
     () ;

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

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

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

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

Description

Instantiations of class template lognormal_distribution model a random distribution . Such a distribution produces random numbers with for x > 0.

	Warning
	This distribution has been updated to match the C++ standard. Its behavior has changed from the original boost::lognormal_distribution. A backwards compatible version is provided in namespace boost.

`lognormal_distribution` public construct/copy/destruct

```
( m = ,  s = );
```
Constructs a lognormal_distribution. m and s are the parameters of the distribution.
```
(param_type & param);
```
Constructs a lognormal_distribution from its parameters.

`lognormal_distribution` public member functions

```
 () ;
```
Returns the m parameter of the distribution.
```
 () ;
```
Returns the s 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.
```
template<typename Engine>  ( eng);
```
Returns a random variate distributed according to the lognormal distribution.
```
template<typename Engine> 
   ( eng, param_type & param);
```
Returns a random variate distributed according to the lognormal distribution with parameters specified by param.

`lognormal_distribution` friend functions

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

Writes the distribution to a std::ostream.

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

Reads the distribution from a std::istream.

```
 ( lhs, 
                 rhs);
```
Returns true if the two distributions will produce identical sequences of values given equal generators.
```
 ( lhs, 
                 rhs);
```
Returns true if the two distributions may produce different sequences of values given equal generators.

Class template lognormal_distribution

Synopsis

Description

lognormal_distribution public construct/copy/destruct

lognormal_distribution public member functions

lognormal_distribution friend functions

`lognormal_distribution` public construct/copy/destruct

`lognormal_distribution` public member functions

`lognormal_distribution` friend functions