DOKK / manpages / debian 13 / libstdc++-14-doc / std::shuffle_order_engine.3cxx.en
std::shuffle_order_engine< _RandomNumberEngine, __k >(3cxx) std::shuffle_order_engine< _RandomNumberEngine, __k >(3cxx)

std::shuffle_order_engine< _RandomNumberEngine, __k > - Produces random numbers by reordering random numbers from some base engine.

#include <random>


template<typename _Sseq > using _If_seed_seq = __detail::_If_seed_seq_for< _Sseq, shuffle_order_engine, result_type >
typedef _RandomNumberEngine::result_type result_type


shuffle_order_engine ()
Constructs a default shuffle_order_engine engine. shuffle_order_engine (_RandomNumberEngine &&__rng)
Move constructs a shuffle_order_engine engine. template<typename _Sseq , typename = _If_seed_seq<_Sseq>> shuffle_order_engine (_Sseq &__q)
Generator construct a shuffle_order_engine engine. shuffle_order_engine (const _RandomNumberEngine &__rng)
Copy constructs a shuffle_order_engine engine. shuffle_order_engine (result_type __s)
Seed constructs a shuffle_order_engine engine. const _RandomNumberEngine & base () const noexcept
void discard (unsigned long long __z)
result_type operator() ()
void seed ()
Reseeds the shuffle_order_engine object with the default seed for the underlying base class generator engine. template<typename _Sseq > _If_seed_seq< _Sseq > seed (_Sseq &__q)
Reseeds the shuffle_order_engine object with the given seed sequence. void seed (result_type __s)
Reseeds the shuffle_order_engine object with the default seed for the underlying base class generator engine.


static constexpr result_type max ()
static constexpr result_type min ()


static constexpr size_t table_size


template<typename _RandomNumberEngine1 , size_t __k1, typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::shuffle_order_engine< _RandomNumberEngine1, __k1 > &__x)
Inserts the current state of a shuffle_order_engine random number generator engine __x into the output stream __os. bool operator== (const shuffle_order_engine &__lhs, const shuffle_order_engine &__rhs)
template<typename _RandomNumberEngine1 , size_t __k1, typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, std::shuffle_order_engine< _RandomNumberEngine1, __k1 > &__x)
Extracts the current state of a % subtract_with_carry_engine random number generator engine __x from the input stream __is.

template<typename _RandomNumberEngine, size_t __k>

class std::shuffle_order_engine< _RandomNumberEngine, __k >"Produces random numbers by reordering random numbers from some base engine.

The values from the base engine are stored in a sequence of size __k and shuffled by an algorithm that depends on those values.

Since

C++11

template<typename _RandomNumberEngine , size_t __k> typedef _RandomNumberEngine::result_type std::shuffle_order_engine< _RandomNumberEngine, __k >::result_type

The type of the generated random value.

template<typename _RandomNumberEngine , size_t __k> std::shuffle_order_engine< _RandomNumberEngine, __k >::shuffle_order_engine () [inline]

Constructs a default shuffle_order_engine engine. The underlying engine is default constructed as well.

template<typename _RandomNumberEngine , size_t __k> std::shuffle_order_engine< _RandomNumberEngine, __k >::shuffle_order_engine (const _RandomNumberEngine & __rng) [inline], [explicit]

Copy constructs a shuffle_order_engine engine. Copies an existing base class random number generator.

Parameters

__rng An existing (base class) engine object.

template<typename _RandomNumberEngine , size_t __k> std::shuffle_order_engine< _RandomNumberEngine, __k >::shuffle_order_engine (_RandomNumberEngine && __rng) [inline], [explicit]

Move constructs a shuffle_order_engine engine. Copies an existing base class random number generator.

Parameters

__rng An existing (base class) engine object.

template<typename _RandomNumberEngine , size_t __k> std::shuffle_order_engine< _RandomNumberEngine, __k >::shuffle_order_engine (result_type __s) [inline], [explicit]

Seed constructs a shuffle_order_engine engine. Constructs the underlying generator engine seeded with __s.

Parameters

__s A seed value for the base class engine.

template<typename _RandomNumberEngine , size_t __k> template<typename _Sseq , typename = _If_seed_seq<_Sseq>> std::shuffle_order_engine< _RandomNumberEngine, __k >::shuffle_order_engine (_Sseq & __q) [inline], [explicit]

Generator construct a shuffle_order_engine engine.

Parameters

__q A seed sequence.

template<typename _RandomNumberEngine , size_t __k> const _RandomNumberEngine & std::shuffle_order_engine< _RandomNumberEngine, __k >::base () const [inline], [noexcept]

Gets a const reference to the underlying generator engine object.

template<typename _RandomNumberEngine , size_t __k> void std::shuffle_order_engine< _RandomNumberEngine, __k >::discard (unsigned long long __z) [inline]

Discard a sequence of random numbers.

template<typename _RandomNumberEngine , size_t __k> static constexpr result_type std::shuffle_order_engine< _RandomNumberEngine, __k >::max () [inline], [static], [constexpr]

Gets the maximum value in the generated random number range.

template<typename _RandomNumberEngine , size_t __k> static constexpr result_type std::shuffle_order_engine< _RandomNumberEngine, __k >::min () [inline], [static], [constexpr]

Gets the minimum value in the generated random number range.

template<typename _RandomNumberEngine , size_t __k> shuffle_order_engine< _RandomNumberEngine, __k >::result_type std::shuffle_order_engine< _RandomNumberEngine, __k >::operator() ()

Gets the next value in the generated random number sequence.

References std::max(), and std::min().

template<typename _RandomNumberEngine , size_t __k> void std::shuffle_order_engine< _RandomNumberEngine, __k >::seed () [inline]

Reseeds the shuffle_order_engine object with the default seed for the underlying base class generator engine.

template<typename _RandomNumberEngine , size_t __k> template<typename _Sseq > _If_seed_seq< _Sseq > std::shuffle_order_engine< _RandomNumberEngine, __k >::seed (_Sseq & __q) [inline]

Reseeds the shuffle_order_engine object with the given seed sequence.

Parameters

__q A seed generator function.

template<typename _RandomNumberEngine , size_t __k> void std::shuffle_order_engine< _RandomNumberEngine, __k >::seed (result_type __s) [inline]

Reseeds the shuffle_order_engine object with the default seed for the underlying base class generator engine.

template<typename _RandomNumberEngine , size_t __k> template<typename _RandomNumberEngine1 , size_t __k1, typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > & __os, const std::shuffle_order_engine< _RandomNumberEngine1, __k1 > & __x) [friend]

Inserts the current state of a shuffle_order_engine random number generator engine __x into the output stream __os.

Parameters

__os An output stream.
__x A shuffle_order_engine random number generator engine.

Returns

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

template<typename _RandomNumberEngine , size_t __k> bool operator== (const shuffle_order_engine< _RandomNumberEngine, __k > & __lhs, const shuffle_order_engine< _RandomNumberEngine, __k > & __rhs) [friend]

Compares two shuffle_order_engine random number generator objects of the same type for equality.

Parameters

__lhs A shuffle_order_engine random number generator object.
__rhs Another shuffle_order_engine random number generator object.

Returns

true if the infinite sequences of generated values would be equal, false otherwise.

template<typename _RandomNumberEngine , size_t __k> template<typename _RandomNumberEngine1 , size_t __k1, typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > & __is, std::shuffle_order_engine< _RandomNumberEngine1, __k1 > & __x) [friend]

Extracts the current state of a % subtract_with_carry_engine random number generator engine __x from the input stream __is.

Parameters

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

Returns

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

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