std::binomial_distribution< _IntType > - A discrete binomial random number distribution.
Contents
Detailed Description
template<typename_IntType=int> n
class std::binomial_distribution< _IntType >"A discrete binomial random nomber distribution.
m
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. t
}
Since {
C++11
Member Function Documentation
template<typename_IntType=int>result_typestd::binomial_distribution<_IntType>::max()const[inline]
Returns the least upper bound value of the distribution.
template<typename_IntType=int>result_typestd::binomial_distribution<_IntType>::min()const[inline]
Returns the greatest lower bound value of the distribution.
template<typename_IntType=int>template<typename_UniformRandomNumberGenerator>result_typestd::binomial_distribution<_IntType>::operator()(_UniformRandomNumberGenerator&__urng)[inline]
Generating functions.
References std::binomial_distribution<_IntType>::operator()().
Referenced by std::binomial_distribution<_IntType>::operator()().
template<typename_IntType>template<typename_UniformRandomNumberGenerator>binomial_distribution<_IntType>::result_typestd::binomial_distribution<_IntType>::operator()(_UniformRandomNumberGenerator&__urng,constparam_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!).
References std::abs(), std::numeric_limits<_Tp>::epsilon(), std::log(), and std::numeric_limits<_Tp>::max().
template<typename_IntType=int>doublestd::binomial_distribution<_IntType>::p()const[inline]
Returns the distribution p parameter.
template<typename_IntType=int>param_typestd::binomial_distribution<_IntType>::param()const[inline]
Returns the parameter set of the distribution.
template<typename_IntType=int>voidstd::binomial_distribution<_IntType>::param(constparam_type&__param)[inline]
Sets the parameter set of the distribution.
Parameters__param The new parameter set of the distribution.
template<typename_IntType=int>voidstd::binomial_distribution<_IntType>::reset()[inline]
Resets the distribution state.
References std::normal_distribution<_RealType>::reset().
template<typename_IntType=int>_IntTypestd::binomial_distribution<_IntType>::t()const[inline]
Returns the distribution t parameter.
Member Typedef Documentation
template<typename_IntType=int>typedef_IntTypestd::binomial_distribution<_IntType>::result_type
The type of the range of the distribution.
Name
std::binomial_distribution< _IntType > - A discrete binomial random number distribution.
Synopsis
#include <random>
Classes
struct param_typePublicTypestypedef _IntType result_typePublicMemberFunctionsbinomial_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_typemax () const
Returns the least upper bound value of the distribution.
result_typemin () const
Returns the greatest lower bound value of the distribution.
template<typename_UniformRandomNumberGenerator > result_typeoperator() (_UniformRandomNumberGenerator
&__urng)
Generating functions.
template<typename_UniformRandomNumberGenerator > result_typeoperator() (_UniformRandomNumberGenerator
&__urng, const param_type &__p)
double p () const
Returns the distribution p parameter.
param_typeparam () const
Returns the parameter set of the distribution.
voidparam (const param_type &__param)
Sets the parameter set of the distribution.
voidreset ()
Resets the distribution state.
_IntType t () const
Returns the distribution t parameter.
Friends
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.
