NAME¶

std::exponential_distribution< _RealType > -

SYNOPSIS¶

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::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::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::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::exponential_distribution< _RealType >::reset () [inline]¶

Resets the distribution. Has no effect on exponential distributions. Definition at line 2180 of file tr1_impl/random.

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 exponential_distribution< _RealType1 > &__x) [friend]¶

Inserts a exponential_distribution random number distribution __x into the output stream __os. Parameters: Returns:

template<typename _RealType = double> template<typename _CharT , typename _Traits > std::basic_istream<_CharT, _Traits>& operator>> ( std::basic_istream< _CharT, _Traits > &__is, exponential_distribution< _RealType > &__x) [friend]¶

Extracts a exponential_distribution random number distribution __x from the input stream __is. Parameters: Returns: Definition at line 2214 of file tr1_impl/random.

Author¶

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