Defined in header <random> | ||
|---|---|---|
template<
class Engine,
std::size_t K
> class shuffle_order_engine;
| (since C++11) |
shuffle_order_engine is a random number engine adaptor that shuffles the random numbers generated by the base engine. It maintains a table of size K and delivers a randomly selected number from that table when requested, replacing it with a number generated by the base engine.
The following typedef defines the random number engine with one commonly used parameter set:
Defined in header <random> |
|
|---|---|
| Type | Definition |
knuth_b (C++11) | std::shuffle_order_engine<std::minstd_rand0, 256> |
| Engine | - | the type of the wrapped engine |
| K | - | the size of the internal table. Must be greater than 0. |
| Type requirements | ||
-Engine must meet the requirements of RandomNumberEngine. |
||
| Member type | Definition |
|---|---|
result_type (C++11) | Engine::result_type |
|
(C++11) | constructs the engine adaptor (public member function) |
|
(C++11) | sets the state of the underlying engine (public member function) |
|
(C++11) | returns the underlying engine (public member function) |
Generation |
|
|
(C++11) | advances the state of the underlying engine and returns the generated value (public member function) |
|
(C++11) | advances the adaptor's state by a specified amount (public member function) |
Characteristics |
|
|
[static] (C++11) | gets the smallest possible value in the output range of the underlying engine. (public static member function) |
|
[static] (C++11) | gets the largest possible value in the output range of the underlying engine. (public static member function) |
|
(C++11)(C++11)(removed in C++20) | compares the internal states of the adaptors and underlying engines (function) |
|
(C++11) | performs stream input and output on pseudo-random number engine adaptor (function) |
| constexpr size_t table_size
[static] (C++11) | the size of the internal table, K (public static member constant) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/numeric/random/shuffle_order_engine