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https://issues.apache.org/jira/browse/RNG-124?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Herbert resolved RNG-124.
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Fix Version/s: 1.4
Resolution: Implemented
In git master.
> Create fixed increment PCG generators
> -------------------------------------
>
> Key: RNG-124
> URL: https://issues.apache.org/jira/browse/RNG-124
> Project: Commons RNG
> Issue Type: Improvement
> Components: core, simple
> Affects Versions: 1.3
> Reporter: Alex Herbert
> Assignee: Alex Herbert
> Priority: Trivial
> Fix For: 1.4
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The increment of the PCG generator serves to select the underlying linear
> congruential generator (LCG) from 2 classes of related generators. Thus
> initialisation of generators using different increments can result in PCG
> output with massive correlations. The result is that seeding with 128-bits
> does not reduce the chance of correlated output over seeding with just
> 64-bits and using a fixed increment. See RNG-123.
> Create a fixed increment version of the three PCG generators which currently
> accept the increment in their seed:
> {noformat}
> PCG_XSH_RR_32 => PCG_XSH_RR_32_OS
> PCG_XSH_RS_32 => PCG_XSH_RS_32_OS
> PCG_RXS_M_XS_64 => PCG_RXS_M_XS_64_OS
> {noformat}
> Here the {{_OS}} suffix represents One Sequence. The equivalent PCG
> generators in the reference c++ source code have a _oneseq suffix.
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