std::discard_block_engine
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Pseudo-random number generation
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discard_block_engine
(C++11)
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std::discard_block_engine
Member functions
Generation
Characteristics
Non-member functions
(C++11)(C++11)(until C++20)
(C++11)(C++11)
Defined in header
<random>
template<
(since C++11)
class Engine,
std::size_t P, std::size_t R
discard_block_engine is a pseudo-random number engine adaptor that discards a certain amount of data produced by the base engine. From each block of size P generated by the base engine, the adaptor keeps only R numbers, discarding the rest.
Contents
[edit] Template parameters
Engine
-
the type of the wrapped engine.
P
-
the size of a block. Expected that \(\small{P>0}\)P > 0.
R
-
the number of used numbers per block. Expected that \(\small{0<R\le P}\)0 < R ≤ P.
Type requirements
-
Engine must meet the requirements of RandomNumberEngine.
[edit] Member types
Member type
Definition
result_type (C++11)
Engine::result_type
[edit] Member functions
Generation
(C++11)
(public member function) [edit]
Characteristics
[static] (C++11)
(public static member function) [edit]
[static] (C++11)
(public static member function) [edit]
[edit] Non-member functions
(C++11)(C++11)(removed in C++20)
(function) [edit]
[edit] Member constants
constexpr size_t block_size
[static] (C++11)
(public static member constant)
constexpr size_t used_block
[static] (C++11)
(public static member constant)
[edit] Example
This section is incomplete
Reason: no example
Reason: no example