focal (3) std::exponential_distribution.3cxx.gz

NAME

       std::exponential_distribution< _RealType > - 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))
           Constructs an exponential distribution with inverse scale parameter $bda$.
       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)
       _RealType lambda () const
           Returns the inverse scale parameter of the distribution.
       result_type max () const
           Returns the least upper bound value of the distribution.
       result_type min () const
           Returns the greatest lower bound value of the distribution.
       template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator
           &__urng)
           Generating functions.
       template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator
           &__urng, const param_type &__p)
       param_type param () const
           Returns the parameter set of the distribution.
       void param (const param_type &__param)
           Sets the parameter set of the distribution.
       void reset ()
           Resets the distribution state.

   Friends
       bool operator== (const exponential_distribution &__d1, const exponential_distribution &__d2)
           Return true if two exponential distributions have the same parameters.

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 $p(x|bda) = bda e^{-bda x}$.

       Distribution StatisticsMean$ac{1}{bda}$ Median$ac{}}bda}$ Mode$zero$ Range$[0, infty]$ Standard
       Deviation$ac{1}{bda}$

       Definition at line 4551 of file random.h.

Author

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