std::exponential_distribution< _RealType >(3cxx) std::exponential_distribution< _RealType >(3cxx)
NAME
std::exponential_distribution< _RealType > -
SYNOPSIS
Classes
struct param_type
Public Types
typedef _RealType result_type
Public Member Functions
exponential_distribution (const result_type &__lambda=result_type(1))
exponential_distribution (const param_type &__p)
_RealType lambda () 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 ()
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 4145 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 4152 of file random.h.
Constructor &; Destructor Documentation
template<typename _RealType = double> std::exponential_distribution< _RealType >::exponential_distribution (const result_type &__lambda =
result_type(1)) [inline], [explicit]
Constructs an exponential distribution with inverse scale parameter $bda$.
Definition at line 4183 of file random.h.
Member Function Documentation
template<typename _RealType = double> _RealType std::exponential_distribution< _RealType >::lambda () const [inline]
Returns the inverse scale parameter of the distribution.
Definition at line 4204 of file random.h.
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 4233 of file random.h.
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 4226 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 4241 of file random.h.
References std::exponential_distribution< _RealType >::operator()(), and std::exponential_distribution< _RealType >::param().
Referenced by std::exponential_distribution< _RealType >::operator()().
template<typename _RealType = double> param_type std::exponential_distribution< _RealType >::param () const [inline]
Returns the parameter set of the distribution.
Definition at line 4211 of file random.h.
Referenced by std::exponential_distribution< _RealType >::operator()(), std::operator==(), and 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 4219 of file random.h.
template<typename _RealType = double> void std::exponential_distribution< _RealType >::reset () [inline]
Resets the distribution state. Has no effect on exponential distributions.
Definition at line 4198 of file random.h.
Author
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libstdc++ Tue Nov 27 2012 std::exponential_distribution< _RealType >(3cxx)