| std::binomial_distribution< _IntType >(3cxx) | std::binomial_distribution< _IntType >(3cxx) |
std::binomial_distribution< _IntType > - A discrete binomial random number distribution.
#include <random.h>
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 $p(i|t,p) = } p^i (1 - p)^{t - i}$ where $t$ and $p$ are the parameters of the distribution.
Definition at line 3732 of file random.h.
The type of the range of the distribution.
Definition at line 3739 of file random.h.
Definition at line 3792 of file random.h.
Definition at line 3795 of file random.h.
Definition at line 3800 of file random.h.
Definition at line 3870 of file random.h.
Definition at line 3877 of file random.h.
Definition at line 3884 of file random.h.
Returns the least upper bound value of the distribution.
Definition at line 3851 of file random.h.
Returns the greatest lower bound value of the distribution.
Definition at line 3844 of file random.h.
Generating functions.
Definition at line 3859 of file random.h.
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_TR1 is defined.
Reference: Devroye, L. Non-Uniform Random Variates Generation. Springer-Verlag, New York, 1986, Ch. X, Sect. 4 (+ Errata!).
Definition at line 1539 of file bits/random.tcc.
References std::abs(), std::numeric_limits< _Tp >::epsilon(), std::log(), and std::numeric_limits< _Tp >::max().
Returns the distribution p parameter.
Definition at line 3822 of file random.h.
Returns the parameter set of the distribution.
Definition at line 3829 of file random.h.
Sets the parameter set of the distribution.
Parameters
Definition at line 3837 of file random.h.
Resets the distribution state.
Definition at line 3808 of file random.h.
References std::normal_distribution< _RealType >::reset().
Returns the distribution t parameter.
Definition at line 3815 of file random.h.
Inserts a binomial_distribution random number distribution __x into the output stream __os.
Parameters
Returns
Return true if two binomial distributions have the same parameters and the sequences that would be generated are equal.
Definition at line 3895 of file random.h.
Extracts a binomial_distribution random number distribution __x from the input stream __is.
Parameters
Returns
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