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[SR-11460] Provide function to let users sanity check their RNG #53861

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stephentyrone opened this issue Sep 12, 2019 · 1 comment
Open

[SR-11460] Provide function to let users sanity check their RNG #53861

stephentyrone opened this issue Sep 12, 2019 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. documentation standard library Area: Standard library umbrella

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@stephentyrone
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Previous ID SR-11460
Radar None
Original Reporter @stephentyrone
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Standard Library
Labels Bug, Documentation, Test
Assignee None
Priority Medium

md5: 82cd123a44470ae3497531f82a9e7f5e

Issue Description:

There is some subtlety in implementing a correct RNG primitive. We should provide (either in the standard library or as a standalone package) a basic test suite that allows a user to validate their RNG passes necessary statistical tests. A simple port of TestU01 to Swift would be a reasonable first step.

This is not complete validation, because RNGs have a bunch of subtle desirable properties that cannot easily be tested, but it would allow developers to avoid some of the most basic hazards.

Spun off from SR-11447
@stephentyrone
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CC @natecook1000, @airspeedswift

We need to give some thought to what the right vehicle for delivering this is.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. documentation standard library Area: Standard library umbrella
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@stephentyrone