std::binomial_distribution(3)std::binomial_distribution(3)NAMEstd::binomial_distribution-
A discrete binomial random number distribution.
SYNOPSIS
Public Types
typedef _RealType input_type
typedef _IntType result_type
Public Member Functions
binomial_distribution (_IntType __t=1, const _RealType
&__p=_RealType(0.5))
template<class _UniformRandomNumberGenerator > result_type operator()
(_UniformRandomNumberGenerator &__urng)
_RealType p () const
void reset ()
_IntType t () const
Friends
template<typename _IntType1 , typename _RealType1 , typename _CharT ,
typename _Traits > std::basic_ostream< _CharT, _Traits > &
operator<< (std::basic_ostream< _CharT, _Traits > &__os, const
binomial_distribution< _IntType1, _RealType1 > &__x)
template<typename _IntType1 , typename _RealType1 , typename _CharT ,
typename _Traits > std::basic_istream< _CharT, _Traits > &
operator>> (std::basic_istream< _CharT, _Traits > &__is,
binomial_distribution< _IntType1, _RealType1 > &__x)
Detailed Description
template<typename _IntType = int, typename _RealType = double> class
std::binomial_distribution< _IntType, _RealType > n
A discrete binomial random number distribution. o
m
The formula for the binomial probability mass function is $ p(i) = {}
p^i (1 - p)^{t - i} $ where $ t $ and $ p $ are the parameters of the
distribution. }
{
Definition at line 1951 of file tr1_impl/random.
Member Function Documentation
template<typename _IntType , typename _RealType > template<class
_UniformRandomNumberGenerator > binomial_distribution< _IntType,
_RealType >::result_type std::binomial_distribution< _IntType,
_RealType >::operator() (_UniformRandomNumberGenerator & __urng)
[inline] 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 1161 of file random.tcc.
References std::abs(), std::log(), and std::max().
template<typename _IntType = int, typename _RealType = double> _RealType
std::binomial_distribution< _IntType, _RealType >::p () const [inline]
Gets the distribution p parameter.
Definition at line 1979 of file tr1_impl/random.
template<typename _IntType = int, typename _RealType = double> _IntType
std::binomial_distribution< _IntType, _RealType >::t () const [inline]
Gets the distribution t parameter.
Definition at line 1972 of file tr1_impl/random.
Friends And Related Function Documentation
template<typename _IntType = int, typename _RealType = double>
template<typename _IntType1 , typename _RealType1 , typename _CharT ,
typename _Traits > std::basic_ostream<_CharT, _Traits>& operator<<
(std::basic_ostream< _CharT, _Traits > & __os, const
binomial_distribution< _IntType1, _RealType1 > & __x) [friend] Inserts
a binomial_distribution random number distribution __x into the output
stream __os.
Parameters:
__os An output stream.
__x A binomial_distribution random number distribution.
Returns:
The output stream with the state of __x inserted or in an error
state.
template<typename _IntType = int, typename _RealType = double>
template<typename _IntType1 , typename _RealType1 , typename _CharT ,
typename _Traits > std::basic_istream<_CharT, _Traits>& operator>>
(std::basic_istream< _CharT, _Traits > & __is, binomial_distribution<
_IntType1, _RealType1 > & __x) [friend] Extracts a
binomial_distribution random number distribution __x from the input
stream __is.
Parameters:
__is An input stream.
__x A binomial_distribution random number generator engine.
Returns:
The input stream with __x extracted or in an error state.
Author
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libstdc++ 22 Nov 2013 std::binomial_distribution(3)
