DOKK / manpages / debian 13 / libstdc++-12-doc / std::discrete_distribution.3cxx.en
std::discrete_distribution< _IntType >(3cxx) std::discrete_distribution< _IntType >(3cxx)

std::discrete_distribution< _IntType > - A discrete_distribution random number distribution.

#include <random>


struct param_type


typedef _IntType result_type


template<typename _InputIterator > discrete_distribution (_InputIterator __wbegin, _InputIterator __wend)
discrete_distribution (const param_type &__p)
discrete_distribution (initializer_list< double > __wl)
template<typename _Func > discrete_distribution (size_t __nw, double __xmin, double __xmax, _Func __fw)
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)
param_type param () const
Returns the parameter set of the distribution. void param (const param_type &__param)
Sets the parameter set of the distribution. std::vector< double > probabilities () const
Returns the probabilities of the distribution. void reset ()
Resets the distribution state.


template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::discrete_distribution< _IntType1 > &__x)
Inserts a discrete_distribution random number distribution __x into the output stream __os. bool operator== (const discrete_distribution &__d1, const discrete_distribution &__d2)
Return true if two discrete distributions have the same parameters. template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, std::discrete_distribution< _IntType1 > &__x)
Extracts a discrete_distribution random number distribution __x from the input stream __is.

template<typename _IntType = int>

class std::discrete_distribution< _IntType >"A discrete_distribution random number distribution.

The formula for the discrete probability mass function is

template<typename _IntType = int> typedef _IntType std::discrete_distribution< _IntType >::result_type

The type of the range of the distribution.

template<typename _IntType = int> result_type std::discrete_distribution< _IntType >::max () const [inline]

Returns the least upper bound value of the distribution.

References std::vector< _Tp, _Alloc >::empty(), and std::vector< _Tp, _Alloc >::size().

template<typename _IntType = int> result_type std::discrete_distribution< _IntType >::min () const [inline]

Returns the greatest lower bound value of the distribution.

template<typename _IntType = int> template<typename _UniformRandomNumberGenerator > result_type std::discrete_distribution< _IntType >::operator() (_UniformRandomNumberGenerator & __urng) [inline]

Generating functions.

References std::discrete_distribution< _IntType >::operator()().

Referenced by std::discrete_distribution< _IntType >::operator()().

template<typename _IntType = int> param_type std::discrete_distribution< _IntType >::param () const [inline]

Returns the parameter set of the distribution.

template<typename _IntType = int> void std::discrete_distribution< _IntType >::param (const param_type & __param) [inline]

Sets the parameter set of the distribution.

Parameters

__param The new parameter set of the distribution.

template<typename _IntType = int> std::vector< double > std::discrete_distribution< _IntType >::probabilities () const [inline]

Returns the probabilities of the distribution.

References std::vector< _Tp, _Alloc >::empty().

template<typename _IntType = int> void std::discrete_distribution< _IntType >::reset () [inline]

Resets the distribution state.

template<typename _IntType = int> template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > & __os, const std::discrete_distribution< _IntType1 > & __x) [friend]

Inserts a discrete_distribution random number distribution __x into the output stream __os.

Parameters

__os An output stream.
__x A discrete_distribution random number distribution.

Returns

The output stream with the state of __x inserted or in an error state.

template<typename _IntType = int> bool operator== (const discrete_distribution< _IntType > & __d1, const discrete_distribution< _IntType > & __d2) [friend]

Return true if two discrete distributions have the same parameters.

template<typename _IntType = int> template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > & __is, std::discrete_distribution< _IntType1 > & __x) [friend]

Extracts a discrete_distribution random number distribution __x from the input stream __is.

Parameters

__is An input stream.
__x A discrete_distribution random number generator engine.

Returns

The input stream with __x extracted or in an error state.

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