C++ named requirements: RandomNumberEngineAdaptor (since C++11)
From cppreference.com
A RandomNumberEngineAdaptor is a RandomNumberEngine that transforms the output of another RandomNumberEngine , the latter of which is termed a base engine .
Requirements
Given
- B , a RandomNumberEngine
- b , an object of type B
- A , a RandomNumberEngineAdaptor , adapting B as a base engine
- a , an object of type A
| function | semantics |
|---|---|
| A :: A ( ) ; | The base engine is initialized as if by its default constructor. |
| bool operator == ( const A & lhs, const A & rhs ) ; | Returns whether lhs 's base engine is equal to rhs 's base engine or not. |
| A :: A ( result_type s ) ; | The base engine is initialized with s . |
| template < class Sseq > A :: A ( Sseq & q ) ; | The base engine is initialized with q . |
| void seed ( ) ; | Invokes b. seed ( ) . |
| void seed ( result_type s ) ; | Invokes b. seed ( s ) . |
| template < class Sseq > void seed ( Sseq & q ) ; | Invokes b. seed ( q ) . |
Furthermore
- The complexity of each function of A does not exceed the complexity of the function of B
- The state of A includes the state of B
- The size of A 's state is no less than the size of b
- Copying A 's state includes copying B 's state
- The textual representation of A includes the textual representation of B
Standard library
The following standard library facilities satisfy RandomNumberEngineAdaptor :
|
(C++11)
|
discards some output of a random number engine
(class template) |
|
(C++11)
|
packs the output of a random number engine into blocks of a specified number of bits
(class template) |
|
(C++11)
|
delivers the output of a random number engine in a different order
(class template) |