Difference between revisions of "cpp/numeric/random/seed seq"
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It provides a way to seed a large number of random number engines or to seed a generator that requires a lot of entropy, given a small seed or a poorly distributed initial seed sequence. | It provides a way to seed a large number of random number engines or to seed a generator that requires a lot of entropy, given a small seed or a poorly distributed initial seed sequence. | ||
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| + | {{tt|std::seed_seq}} meets the requirements of {{concept|SeedSequence}}. | ||
===Member types=== | ===Member types=== | ||
Revision as of 10:06, 17 March 2012
Template:cpp/numeric/random/uniform real distribution/sidebar
| Defined in header <random>
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| class seed_seq; |
(since C++11) | |
std::seed_seq consumes a sequence of integer-valued data and produces a requested number of unsigned integer values i, 0 ≤ i < 232, based on the consumed data. The produced values are distributed over the entire 32-bit range even if the consumed values are close.
It provides a way to seed a large number of random number engines or to seed a generator that requires a lot of entropy, given a small seed or a poorly distributed initial seed sequence.
std::seed_seq meets the requirements of Template:concept.
Member types
Template:tdcl list begin Template:tdcl list hitem Template:tdcl list item Template:tdcl list end
Member functions
| constructs and seeds the std::seed_seq object (public member function) | |
| operator= (deleted) |
not copy-assignable (public member function) |
| calculates the bias-eliminated, evenly distributed 32-bit values (public member function) | |
| obtains the number of 32-bit values stored in std::seed_seq (public member function) | |
| obtains the 32-bit values stored in std::seed_seq (public member function) |
