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std::lognormal_distribution< _RealType > Class Template Reference
Numerics » Random Number Generation » Random Number Distributions » Normal Distributions

Classes

struct  param_type
 

Public Types

typedef _RealType result_type
 

Public Member Functions

 lognormal_distribution (_RealType __m=_RealType(0), _RealType __s=_RealType(1))
 
 lognormal_distribution (const param_type &__p)
 
template<typename _ForwardIterator , typename _UniformRandomNumberGenerator >
void __generate (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng)
 
template<typename _ForwardIterator , typename _UniformRandomNumberGenerator >
void __generate (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng, const param_type &__p)
 
template<typename _UniformRandomNumberGenerator >
void __generate (result_type *__f, result_type *__t, _UniformRandomNumberGenerator &__urng, const param_type &__p)
 
_RealType m () const
 
result_type max () const
 
result_type min () const
 
template<typename _UniformRandomNumberGenerator >
result_type operator() (_UniformRandomNumberGenerator &__urng)
 
template<typename _UniformRandomNumberGenerator >
result_type operator() (_UniformRandomNumberGenerator &__urng, const param_type &__p)
 
param_type param () const
 
void param (const param_type &__param)
 
void reset ()
 
_RealType s () const
 

Friends

template<typename _RealType1 , typename _CharT , typename _Traits >
std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::lognormal_distribution< _RealType1 > &__x)
 
bool operator== (const lognormal_distribution &__d1, const lognormal_distribution &__d2)
 
template<typename _RealType1 , typename _CharT , typename _Traits >
std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, std::lognormal_distribution< _RealType1 > &__x)
 

Detailed Description

template<typename _RealType = double>
class std::lognormal_distribution< _RealType >

A lognormal_distribution random number distribution.

The formula for the normal probability mass function is

\[ p(x|m,s) = \frac{1}{sx\sqrt{2\pi}} \exp{-\frac{(\ln{x} - m)^2}{2s^2}} \]

Definition at line 2143 of file random.h.

Member Typedef Documentation

◆ result_type

template<typename _RealType = double>
typedef _RealType std::lognormal_distribution< _RealType >::result_type

The type of the range of the distribution.

Definition at line 2146 of file random.h.

Member Function Documentation

◆ max()

template<typename _RealType = double>
result_type std::lognormal_distribution< _RealType >::max ( ) const
inline

Returns the least upper bound value of the distribution.

Definition at line 2239 of file random.h.

References std::numeric_limits< _Tp >::max().

◆ min()

template<typename _RealType = double>
result_type std::lognormal_distribution< _RealType >::min ( ) const
inline

Returns the greatest lower bound value of the distribution.

Definition at line 2232 of file random.h.

◆ operator()()

template<typename _RealType = double>
template<typename _UniformRandomNumberGenerator >
result_type std::lognormal_distribution< _RealType >::operator() ( _UniformRandomNumberGenerator &  __urng)
inline

Generating functions.

Definition at line 2247 of file random.h.

◆ param() [1/2]

template<typename _RealType = double>
param_type std::lognormal_distribution< _RealType >::param ( ) const
inline

Returns the parameter set of the distribution.

Definition at line 2217 of file random.h.

◆ param() [2/2]

template<typename _RealType = double>
void std::lognormal_distribution< _RealType >::param ( const param_type &  __param)
inline

Sets the parameter set of the distribution.

Parameters
__paramThe new parameter set of the distribution.

Definition at line 2225 of file random.h.

◆ reset()

template<typename _RealType = double>
void std::lognormal_distribution< _RealType >::reset ( )
inline

Resets the distribution state.

Definition at line 2199 of file random.h.

References std::normal_distribution< _RealType >::reset().

Friends And Related Function Documentation

◆ operator<<

template<typename _RealType = double>
template<typename _RealType1 , typename _CharT , typename _Traits >
std::basic_ostream<_CharT, _Traits>& operator<< ( std::basic_ostream< _CharT, _Traits > &  __os,
const std::lognormal_distribution< _RealType1 > &  __x 
)
friend

Inserts a lognormal_distribution random number distribution __x into the output stream __os.

Parameters
__osAn output stream.
__xA lognormal_distribution random number distribution.
Returns
The output stream with the state of __x inserted or in an error state.

◆ operator==

template<typename _RealType = double>
bool operator== ( const lognormal_distribution< _RealType > &  __d1,
const lognormal_distribution< _RealType > &  __d2 
)
friend

Return true if two lognormal distributions have the same parameters and the sequences that would be generated are equal.

Definition at line 2284 of file random.h.

◆ operator>>

template<typename _RealType = double>
template<typename _RealType1 , typename _CharT , typename _Traits >
std::basic_istream<_CharT, _Traits>& operator>> ( std::basic_istream< _CharT, _Traits > &  __is,
std::lognormal_distribution< _RealType1 > &  __x 
)
friend

Extracts a lognormal_distribution random number distribution __x from the input stream __is.

Parameters
__isAn input stream.
__xA lognormal_distribution random number generator engine.
Returns
The input stream with __x extracted or in an error state.
The documentation for this class was generated from the following files: