std::binomial_distribution - Man Page

struct param_type

typedef _IntType result_type

binomial_distribution (_IntType __t, double __p=0.5)
binomial_distribution (const param_type &__p)
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)
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)
double p () const
Returns the distribution p parameter.
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.
_IntType t () const
Returns the distribution t parameter.

template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::binomial_distribution< _IntType1 > &__x)
Inserts a binomial_distribution random number distribution __x into the output stream __os.
bool operator== (const binomial_distribution &__d1, const binomial_distribution &__d2)
Return true if two binomial distributions have the same parameters and the sequences that would be generated are equal.
template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, std::binomial_distribution< _IntType1 > &__x)
Extracts a binomial_distribution random number distribution __x from the input stream __is.

class std::binomial_distribution< _IntType >"A discrete binomial random number distribution.

The formula for the binomial probability density function is $p(i|t,p) = binom{t}{i} p^i (1 - p)^{t - i}$ where $t$ and $p$ are the parameters of the distribution.

Since

C++11

The type of the range of the distribution.

Returns the least upper bound value of the distribution.

Returns the greatest lower bound value of the distribution.

Generating functions.

References std::binomial_distribution< _IntType >::operator()().

Referenced by std::binomial_distribution< _IntType >::operator()().

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_FUNCS is defined.

Reference: Devroye, L. Non-Uniform Random Variates Generation. Springer-Verlag, New York, 1986, Ch. X, Sect. 4 (+ Errata!).

References std::abs(), std::numeric_limits< _Tp >::epsilon(), std::log(), and std::numeric_limits< _Tp >::max().

Returns the distribution p parameter.

Returns the parameter set of the distribution.

Sets the parameter set of the distribution.

Parameters

Resets the distribution state.

References std::normal_distribution< _RealType >::reset().

Returns the distribution t parameter.

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

Parameters

Returns

The output stream with the state of __x inserted or in an error state.

Return true if two binomial distributions have the same parameters and the sequences that would be generated are equal.

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

Parameters

Returns

The input stream with __x extracted or in an error state.