std::exponential_distribution<; _Rstd::exponential_distribution< _RealType >(3)
NAME
std::exponential_distribution< _RealType > -
SYNOPSIS
Classes
struct param_type
Public Types
typedef _RealType result_type
Public Member Functions
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)
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)
Public Attributes
__pad0__: _M_param(__lambda) { } explicit
exponential_distribution(const param_type& __p) : _M_param(__p) { }
void reset() { } _RealType lambda() const { return
_M_param.lambda()
Friends
bool operator== (const exponential_distribution &__d1, const
exponential_distribution &__d2)
Detailed Description
template<typename _RealType = double>class std::exponential_distribution<
_RealType >
An exponential continuous distribution for random numbers.
The formula for the exponential probability density function is
$p(x|bda) = bda e^{-bda x}$.
Mean$ac{1}{bda}$ Median$ac{}}bda}$ Mode$zero$ Range$[0, infty]$
Standard Deviation$ac{1}{bda}$ Distribution Statistics
Definition at line 4646 of file random.h.
Member Typedef Documentation
template<typename _RealType = double> typedef _RealType
std::exponential_distribution< _RealType >::result_type
The type of the range of the distribution.
Definition at line 4649 of file random.h.
Member Function Documentation
template<typename _RealType = double> result_type
std::exponential_distribution< _RealType >::max () const [inline]
Returns the least upper bound value of the distribution.
Definition at line 4734 of file random.h.
References std::numeric_limits< _Tp >::max().
template<typename _RealType = double> result_type
std::exponential_distribution< _RealType >::min () const [inline]
Returns the greatest lower bound value of the distribution.
Definition at line 4727 of file random.h.
template<typename _RealType = double> template<typename
_UniformRandomNumberGenerator > result_type
std::exponential_distribution< _RealType >::operator()
(_UniformRandomNumberGenerator &__urng) [inline]
Generating functions.
Definition at line 4742 of file random.h.
template<typename _RealType = double> param_type
std::exponential_distribution< _RealType >::param () const [inline]
Returns the parameter set of the distribution.
Definition at line 4712 of file random.h.
Referenced by std::operator>>().
template<typename _RealType = double> void std::exponential_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 4720 of file random.h.
Friends And Related Function Documentation
template<typename _RealType = double> bool operator== (const
exponential_distribution< _RealType > &__d1, const
exponential_distribution< _RealType > &__d2) [friend]
Return true if two exponential distributions have the same parameters.
Definition at line 4782 of file random.h.
Member Data Documentation
template<typename _RealType = double> std::exponential_distribution<
_RealType >::__pad0__ [explicit]
Constructs an exponential distribution with inverse scale parameter
$bda$.
Definition at line 4706 of file random.h.
Author
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