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Ran 20 Sep 2019 12:48PM UTC

Files 634

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Committed 20 Sep 2019 11:17AM UTC coverage: 60.51% (+0.002%) from 60.508%

Job # TEST_SUITES=testbugfix CONFIGFLAGS="--enable-memory-checking"

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push

travis-ci

Committed by

fingolfin

Commit Message

Refactor the 'classical' random number generator

So far, the old random number generator using a single global state in the
global variables `R_N` and `R_X` was still present in the GAP library, and was
used to power the `GlobalRandomSource`. In addition, there was a type
`IsGAPRandomSource` of random sources, which also emulated the way the old RNG
worked.

This PR removes the old RNG, and replaces the `GlobalRandomSource` by one of
type `IsGAPRandomSource`. The undocumented function `RANDOM_LIST` is also
removed (no distributed package uses it). To ensure backwards compatibility,
we provide an implementation of `RANDOM_SEED` which uses `GlobalRandomSource`
(only two packages, `recog` and `gbnp`, call `RANDOM_SEED`, and only in their
package tests). Finally, dummies for `R_N` and `R_X` are retained to help
detect any ancient internal code people might throw at GAP.

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