DOKK / manpages / debian 12 / libstdc++-11-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.h>


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.

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

The formula for the discrete probability mass function is

Definition at line 5279 of file random.h.

The type of the range of the distribution.

Definition at line 5286 of file random.h.

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

Definition at line 5336 of file random.h.

Definition at line 5341 of file random.h.

template<typename _IntType = int> std::discrete_distribution< _IntType >::discrete_distribution (initializer_list< double > __wl) [inline]

Definition at line 5346 of file random.h.

Definition at line 5351 of file random.h.

template<typename _IntType = int> std::discrete_distribution< _IntType >::discrete_distribution (const param_type & __p) [inline], [explicit]

Definition at line 5357 of file random.h.

template<typename _IntType = int> template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > void std::discrete_distribution< _IntType >::__generate (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator & __urng) [inline]

Definition at line 5426 of file random.h.

template<typename _IntType = int> template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > void std::discrete_distribution< _IntType >::__generate (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator & __urng, const param_type & __p) [inline]

Definition at line 5433 of file random.h.

Definition at line 5440 of file random.h.

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

Returns the least upper bound value of the distribution.

Definition at line 5404 of file random.h.

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.

Definition at line 5397 of file random.h.

Generating functions.

Definition at line 5415 of file random.h.

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

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

Definition at line 2698 of file bits/random.tcc.

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

Returns the parameter set of the distribution.

Definition at line 5382 of file random.h.

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.

Definition at line 5390 of file random.h.

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

Returns the probabilities of the distribution.

Definition at line 5372 of file random.h.

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

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

Resets the distribution state.

Definition at line 5365 of file random.h.

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.

Return true if two discrete distributions have the same parameters.

Definition at line 5450 of file random.h.

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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Thu Feb 16 2023 libstdc++