Provided by: libstdc++-9-doc_9.5.0-3ubuntu1_all 
NAME
std::lognormal_distribution< _RealType > - A lognormal_distribution random number
distribution.
SYNOPSIS
#include <random.h>
Classes
struct param_type
Public Types
typedef _RealType result_type
Public Member Functions
lognormal_distribution (_RealType __m, _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
Returns the least upper bound value of the distribution.
result_type min () const
Returns the greatest lower bound value of the distribution.
template<typename _UniformRandomNumberGenerator > result_type operator()
(_UniformRandomNumberGenerator &__urng)
Generating functions.
template<typename _UniformRandomNumberGenerator > result_type operator()
(_UniformRandomNumberGenerator &__urng, const param_type &__p)
param_type param () const
Returns the parameter set of the distribution.
void param (const param_type &__param)
Sets the parameter set of the distribution.
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)
Inserts a lognormal_distribution random number distribution __x into the output stream
__os.
bool operator== (const lognormal_distribution &__d1, const lognormal_distribution &__d2)
Return true if two lognormal distributions have the same parameters and the sequences
that would be generated are equal.
template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_istream<
_CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is,
std::lognormal_distribution< _RealType1 > &__x)
Extracts a lognormal_distribution random number distribution __x from the input stream
__is.
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) = ac{1}{sxt{2i}}
\xp{-ac{(x} - m)^2}{2s^2}} ]
Definition at line 2185 of file random.h.
Member Typedef Documentation
template<typename _RealType = double> typedef _RealType std::lognormal_distribution<
_RealType >::result_type
The type of the range of the distribution.
Definition at line 2192 of file random.h.
Constructor & Destructor Documentation
template<typename _RealType = double> std::lognormal_distribution< _RealType
>::lognormal_distribution () [inline]
Definition at line 2227 of file random.h.
template<typename _RealType = double> std::lognormal_distribution< _RealType
>::lognormal_distribution (_RealType __m, _RealType __s = _RealType(1)) [inline],
[explicit]
Definition at line 2230 of file random.h.
template<typename _RealType = double> std::lognormal_distribution< _RealType
>::lognormal_distribution (const param_type & __p) [inline], [explicit]
Definition at line 2235 of file random.h.
Member Function Documentation
template<typename _RealType = double> template<typename _ForwardIterator , typename
_UniformRandomNumberGenerator > void std::lognormal_distribution< _RealType >::__generate
(_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator & __urng)
[inline]
Definition at line 2303 of file random.h.
template<typename _RealType = double> template<typename _ForwardIterator , typename
_UniformRandomNumberGenerator > void std::lognormal_distribution< _RealType >::__generate
(_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator & __urng, const
param_type & __p) [inline]
Definition at line 2310 of file random.h.
template<typename _RealType = double> template<typename _UniformRandomNumberGenerator > void
std::lognormal_distribution< _RealType >::__generate (result_type * __f, result_type *
__t, _UniformRandomNumberGenerator & __urng, const param_type & __p) [inline]
Definition at line 2317 of file random.h.
template<typename _RealType = double> _RealType std::lognormal_distribution< _RealType >::m
() const [inline]
Definition at line 2250 of file random.h.
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 2283 of file random.h.
References std::numeric_limits< _Tp >::max().
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 2276 of file random.h.
template<typename _RealType = double> template<typename _UniformRandomNumberGenerator >
result_type std::lognormal_distribution< _RealType >::operator()
(_UniformRandomNumberGenerator & __urng) [inline]
Generating functions.
Definition at line 2291 of file random.h.
References std::lognormal_distribution< _RealType >::operator()().
Referenced by std::lognormal_distribution< _RealType >::operator()().
template<typename _RealType = double> template<typename _UniformRandomNumberGenerator >
result_type std::lognormal_distribution< _RealType >::operator()
(_UniformRandomNumberGenerator & __urng, const param_type & __p) [inline]
Definition at line 2296 of file random.h.
template<typename _RealType = double> param_type std::lognormal_distribution< _RealType
>::param () const [inline]
Returns the parameter set of the distribution.
Definition at line 2261 of file random.h.
template<typename _RealType = double> void std::lognormal_distribution< _RealType >::param
(const param_type & __param) [inline]
Sets the parameter set of the distribution.
Parameters
__param The new parameter set of the distribution.
Definition at line 2269 of file random.h.
template<typename _RealType = double> void std::lognormal_distribution< _RealType >::reset ()
[inline]
Resets the distribution state.
Definition at line 2243 of file random.h.
References std::normal_distribution< _RealType >::reset().
template<typename _RealType = double> _RealType std::lognormal_distribution< _RealType >::s
() const [inline]
Definition at line 2254 of file random.h.
Friends And Related Function Documentation
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
__os An output stream.
__x A lognormal_distribution random number distribution.
Returns
The output stream with the state of __x inserted or in an error state.
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 2328 of file random.h.
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
__is An input stream.
__x A lognormal_distribution random number generator engine.
Returns
The input stream with __x extracted or in an error state.
Author
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libstdc++ Tue Feb 21std::lognormal_distribution< _RealType >(3cxx)