std::tr1::exponential_distribution3cxx
An exponential continuous distribution for random numbers.
Usage
Public Types
typedef _RealType input_type
typedef _RealType result_type
Public Member Functions
exponential_distribution (const result_type &__lambda=result_type(1))
_RealType lambda () const
template<class _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng)
void reset ()
Friends
template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const exponential_distribution< _RealType1 > &__x)
template<typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, exponential_distribution &__x)
Detailed Description
template<typename _RealType = double> class std::tr1::exponential_distribution< _RealType >
An exponential continuous distribution for random numbers.
The formula for the exponential probability mass function is $ p(x) = e^{- x} $.
Mean$ ac{1}{} $ Median$ ac{ge$[0, infty]$ Standard Deviation$ ac{1}{} $ Distribution Statistics
Definition at line 2148 of file tr1_impl/random.
Constructor & Destructor Documentation
template<typename _RealType = double> std::tr1::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 2161 of file tr1_impl/random.
Member Function Documentation
template<typename _RealType = double> _RealType std::tr1::exponential_distribution< _RealType >::lambda () const [inline] Gets the inverse scale parameter of the distribution.
Definition at line 2171 of file tr1_impl/random.
template<typename _RealType = double> void std::tr1::exponential_distribution< _RealType >::reset () [inline] Resets the distribution.
Has no effect on exponential distributions.
Definition at line 2180 of file tr1_impl/random.