std::discard_block_engine| Member functions |
discard_block_engine::discard_block_engine |
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| Generation |
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| Characteristics |
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| Non-member functions |
(C++11)(C++11)(until C++20) |
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discard_block_engine(); | (1) | (since C++11) |
explicit discard_block_engine( result_type s); | (2) | (since C++11) |
template<class SeedSeq>
explicit discard_block_engine( SeedSeq& seq); | (3) | (since C++11) |
explicit discard_block_engine(const Engine& e); | (4) | (since C++11) |
explicit discard_block_engine( Engine&& e); | (5) | (since C++11) |
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Constructs new pseudo-random engine adaptor.
1) Default constructor. The underlying engine is also default-constructed.
2) Constructs the underlying engine withs.
3) Constructs the underlying engine with seed sequenceseq.
This overload participates in overload resolution only if
Sseq satisfies the requirements of
SeedSequence.
4) Constructs the underlying engine with a copy ofe.
5) Move-constructs the underlying engine withe.e holds unspecified, but valid state afterwards.
[edit]Parameters
| s | - | integer value to construct the underlying engine with |
| seq | - | seed sequence to construct the underlying engine with |
| e | - | pseudo-random number engine to initialize with |
[edit]Exceptions
3) If
SeedSeq is not
std::seed_seq, throws the exceptions thrown by the
seq.generate call.
[edit]Example
[edit]Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
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| LWG 2181 | C++11 | overload(3) would not throw even if theseq.generate call throws | propagates the exception |
