Difference between revisions of "cpp/numeric/random/shuffle order engine/seed"
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< cpp | numeric | random | shuffle order engine
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Latest revision as of 14:06, 7 August 2021
| void seed(); |
(1) | (since C++11) |
| void seed( result_type value ); |
(2) | (since C++11) |
| template< class SeedSeq > void seed( SeedSeq& seq ); |
(3) | (since C++11) |
Reinitializes the internal state of the underlying engine using a new seed value.
1) Seeds the underlying engine with the default seed value. Effectively calls e.seed(), where e is the underlying engine.
2) Seeds the underlying engine with the seed value value. Effectively calls e.seed(value), where e is the underlying engine.
3) Seeds the underlying engine with the seed sequence seq. Effectively calls e.seed(seq), where e is the underlying engine.
This overload participates in overload resolution only if
SeedSeq satisfies the requirements of SeedSequence.[edit] Parameters
| value | - | seed value to use in the initialization of the internal state of the underlying engine |
| seq | - | seed sequence to use in the initialization of the internal state of the underlying engine |
[edit] Exceptions
[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 |
|---|---|---|---|
| LWG 2181 | C++11 | overload (3) would not throw even if the seq.generate call throws
|
propagates the exception |
