NAME¶

std::binomial_distribution< _IntType > -

SYNOPSIS¶

Classes¶

struct param_type

Public Types¶

typedef _IntType result_type

Public Member Functions¶

binomial_distribution (_IntType __t=_IntType(1), double __p=0.5) binomial_distribution (const param_type &__p) 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) double p () const param_type param () const void param (const param_type &__param) void reset () _IntType t () const

Friends¶

template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &, const std::binomial_distribution< _IntType1 > &)" template<typename _IntType1 > bool operator== (const std::binomial_distribution< _IntType1 > &__d1, const std::binomial_distribution< _IntType1 > &__d2) template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &, std::binomial_distribution< _IntType1 > &)"

Detailed Description¶

template<typename _IntType = int>class std::binomial_distribution< _IntType >¶

A discrete binomial random number distribution. The formula for the binomial probability density function is $p(i|t,p) = } p^i (1 - p)^{t - i}$ where $t$ and $p$ are the parameters of the distribution. Definition at line 3399 of file random.h.

Member Typedef Documentation¶

template<typename _IntType = int> typedef _IntType std::binomial_distribution< _IntType >:: result_type¶

The type of the range of the distribution. Definition at line 3406 of file random.h.

Member Function Documentation¶

template<typename _IntType = int> result_type std::binomial_distribution< _IntType >::max () const [inline]¶

Returns the least upper bound value of the distribution. Definition at line 3509 of file random.h.

template<typename _IntType = int> result_type std::binomial_distribution< _IntType >::min () const [inline]¶

Returns the greatest lower bound value of the distribution. Definition at line 3502 of file random.h.

template<typename _IntType = int> template<typename _UniformRandomNumberGenerator > result_type std::binomial_distribution< _IntType >::operator() (_UniformRandomNumberGenerator &__urng) [inline]¶

Generating functions. Definition at line 3517 of file random.h. References std::binomial_distribution< _IntType >::operator()(), and std::binomial_distribution< _IntType >::param(). Referenced by std::binomial_distribution< _IntType >::operator()().

template<typename _IntType > template<typename _UniformRandomNumberGenerator > binomial_distribution< _IntType >:: result_type std::binomial_distribution< _IntType >::operator() (_UniformRandomNumberGenerator &__urng, const param_type &__param)¶

A rejection algorithm when t * p >= 8 and a simple waiting time method - the second in the referenced book - otherwise. NB: The former is available only if _GLIBCXX_USE_C99_MATH_TR1 is defined. Reference: Devroye, L. Non-Uniform Random Variates Generation. Springer-Verlag, New York, 1986, Ch. X, Sect. 4 (+ Errata!). Definition at line 1434 of file random.tcc. References std::abs(), std::log(), and std::poisson_distribution< _IntType >::max().

template<typename _IntType = int> double std::binomial_distribution< _IntType >::p () const [inline]¶

Returns the distribution p parameter. Definition at line 3480 of file random.h.

template<typename _IntType = int> param_type std::binomial_distribution< _IntType >::param () const [inline]¶

Returns the parameter set of the distribution. Definition at line 3487 of file random.h. Referenced by std::binomial_distribution< _IntType >::operator()().

template<typename _IntType = int> void std::binomial_distribution< _IntType >::param (const param_type &__param) [inline]¶

Sets the parameter set of the distribution. Parameters: Definition at line 3495 of file random.h.

template<typename _IntType = int> void std::binomial_distribution< _IntType >::reset () [inline]¶

Resets the distribution state. Definition at line 3466 of file random.h. References std::normal_distribution< _RealType >::reset().

template<typename _IntType = int> _IntType std::binomial_distribution< _IntType >::t () const [inline]¶

Returns the distribution t parameter. Definition at line 3473 of file random.h.

Friends And Related Function Documentation¶

template<typename _IntType = int> template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_ostream<_CharT, _Traits>& operator<< ( std::basic_ostream< _CharT, _Traits > &, const std::binomial_distribution< _IntType1 > &) [friend]¶

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

template<typename _IntType = int> template<typename _IntType1 > bool operator== (const std::binomial_distribution< _IntType1 > &__d1, const std::binomial_distribution< _IntType1 > &__d2) [friend]¶

Return true if two binomial distributions have the same parameters and the sequences that would be generated are equal. Definition at line 3532 of file random.h.

template<typename _IntType = int> template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_istream<_CharT, _Traits>& operator>> ( std::basic_istream< _CharT, _Traits > &, std::binomial_distribution< _IntType1 > &) [friend]¶

Extracts a binomial_distribution random number distribution __x from the input stream __is. Parameters: Returns:

Author¶

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