std::exponential_distribution(3)

NAME
std::exponential_distribution - An exponential continuous distribution for random numbers.

SYNOPSIS

  Classes
struct param_type

  Public Types
typedef _RealType result_type

  Public Member Functions
exponential_distribution (const param_type &__p)
exponential_distribution (const result_type &__lambda=result_type(1))
_RealType lambda () const
result_type max () const
result_type min () const
template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng, const param_type &__p)
template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng)
void param (const param_type &__param)
param_type param () const
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|) = e^{- x} $.

Mean$ ac{1}{} $ Median$ ac{ge$[0, infty]$ Standard Deviation$ ac{1}{} $ Distribution Statistics

Definition at line 3690 of file bits/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 3694 of file bits/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 $ $.

Definition at line 3725 of file bits/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 3746 of file bits/random.h.

References std::exponential_distribution< _RealType >::exponential_distribution::param_type::lambda().

  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 3775 of file bits/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 3768 of file bits/random.h.

  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 3761 of file bits/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 3753 of file bits/random.h.

Referenced by std::operator==(), and std::operator>>().

  template<typename _RealType = double> void std::exponential_distribution< _RealType >::reset () [inline]

Resets the distribution state.

Has no effect on exponential distributions.

Definition at line 3740 of file bits/random.h.

Author

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