std::geometric_distribution(3)std::geometric_distribution(3)NAMEstd::geometric_distribution-
A discrete geometric random number distribution.
SYNOPSIS
Public Types
typedef _RealType input_type
typedef _IntType result_type
Public Member Functions
geometric_distribution (const _RealType &__p=_RealType(0.5))
template<class _UniformRandomNumberGenerator > result_type operator()
(_UniformRandomNumberGenerator &__urng)
_RealType p () const
void reset ()
Friends
template<typename _IntType1 , typename _RealType1 , typename _CharT ,
typename _Traits > std::basic_ostream< _CharT, _Traits > &
operator<< (std::basic_ostream< _CharT, _Traits > &__os, const
geometric_distribution< _IntType1, _RealType1 > &__x)
template<typename _CharT , typename _Traits > std::basic_istream<
_CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits
> &__is, geometric_distribution &__x)
Detailed Description
template<typename _IntType = int, typename _RealType = double> class
std::geometric_distribution< _IntType, _RealType >
A discrete geometric random number distribution.
The formula for the geometric probability mass function is $ p(i) = (1
- p)p^{i-1} $ where $ p $ is the parameter of the distribution.
Definition at line 1778 of file tr1_impl/random.
Member Function Documentation
template<typename _IntType = int, typename _RealType = double> _RealType
std::geometric_distribution< _IntType, _RealType >::p () const [inline]
Gets the distribution parameter p.
Definition at line 1798 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
geometric_distribution< _IntType1, _RealType1 > & __x) [friend] Inserts
a geometric_distribution random number distribution __x into the output
stream __os.
Parameters:
__os An output stream.
__x A geometric_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 _CharT , typename _Traits >
std::basic_istream<_CharT, _Traits>& operator>> (std::basic_istream<
_CharT, _Traits > & __is, geometric_distribution< _IntType, _RealType >
& __x) [friend] Extracts a geometric_distribution random number
distribution __x from the input stream __is.
Parameters:
__is An input stream.
__x A geometric_distribution random number generator engine.
Returns:
The input stream with __x extracted or in an error state.
Definition at line 1835 of file tr1_impl/random.
Author
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libstdc++ 22 Nov 2013 std::geometric_distribution(3)
