Provided by: libstdc++6-4.4-doc_4.4.7-1ubuntu2_all

#### NAME

```       std::binomial_distribution< _IntType, _RealType > -

```

#### 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)"

```

#### DetailedDescription

```   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.    n
}
Definition at line 1951 of file tr1_impl/random.                   {

```

#### MemberFunctionDocumentation

```   template<typename _IntType , typename _RealType > template<class _UniformRandomNumberGenerator
> binomial_distribution< _IntType, _RealType >::result_type std::binomial_distribution<
_IntType, _RealType >::operator() (_UniformRandomNumberGenerator &__urng) 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.

```

#### FriendsAndRelatedFunctionDocumentation

```   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

```       Generated automatically by Doxygen for libstdc++ from the source code.

libstdc++                                Mstd::binomial2distribution< _IntType, _RealType >(3cxx)
```