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Uniform distribution: bias and usize portability #809

Merged
merged 6 commits into from Jun 3, 2019
Merged

Uniform distribution: bias and usize portability #809

merged 6 commits into from Jun 3, 2019

Commits on Jun 3, 2019

  1. Add benchmarks for uniform usize samples 

    The usize64 bench is noticably slower than the others,
perhaps due to use of rejection sampling.
    @dhardy
    dhardy committed Jun 3, 2019
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  2. Uniform distribution: correct bias (value breaking change) 

    Signed extension of zone was incorrect. This method has
near identical performance in benchmarks.
    @dhardy
    dhardy committed Jun 3, 2019
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  3. seq module: make gen_range usage stable across platforms

    @dhardy
    dhardy committed Jun 3, 2019
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  4. Make seq::index::sample_rejection generic over uint index types

    @dhardy
    dhardy committed Jun 3, 2019
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  5. AliasMethod weighted index: use u32 internally 

    Primarily for value stability, also slight performance boost.
    @dhardy
    dhardy committed Jun 3, 2019
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  6. UniformInt: rename ints_to_reject/zone field

    @dhardy
    dhardy committed Jun 3, 2019
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