std:: discard_block_engine
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Defined in header
<random>
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||
|
template
<
class
Engine,
|
(since C++11) | |
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.
Template parameters
| Engine | - | the type of the wrapped engine. |
| P | - | the size of a block. Expected that P > 0 . |
| R | - | the number of used numbers per block. Expected that 0 < R ≤ P . |
| Type requirements | ||
-
Engine
must meet the requirements of
RandomNumberEngine
.
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||
Member types
| Member type | Definition |
result_type
(C++11)
|
Engine::result_type
|
Member functions
|
(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) |
Non-member functions
|
(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) |
Member constants
|
constexpr size_t
block_size
[static]
(C++11)
|
the size of the block,
P
(public static member constant) |
|
constexpr size_t
used_block
[static]
(C++11)
|
the number of used numbers per block,
R
(public static member constant) |
Example
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This section is incomplete
Reason: no example |