RFR: 8302987: Add uniform and spatially equidistributed bounded float/double streams to RandomGenerator [v2]
Raffaello Giulietti
rgiulietti at openjdk.org
Mon Feb 27 10:46:59 UTC 2023
> The `default` method `nextDouble(double origin, double bound)` in `java.util.random.RandomGenerator` aims at generating a uniformly and spatially equidistributed random `double` in the left-closed and right-open range [`origin`, `bound`). It does so by applying the affine transform `origin + (bound - origin) * r` to a uniformly and spatially equidistributed random `double` `r` in the range [0, 1).
>
> Since floating-point arithmetic suffers from small but noticeable rounding errors, this ends up slightly deforming the distribution of `r` when applying the affine transform.
Raffaello Giulietti has updated the pull request incrementally with one additional commit since the last revision:
8302987: Add uniform and spatially equidistributed bounded float/double streams to RandomGenerator
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/12719/files
- new: https://git.openjdk.org/jdk/pull/12719/files/39f34b1e..68f66cbd
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=12719&range=01
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=12719&range=00-01
Stats: 8 lines in 1 file changed: 0 ins; 8 del; 0 mod
Patch: https://git.openjdk.org/jdk/pull/12719.diff
Fetch: git fetch https://git.openjdk.org/jdk pull/12719/head:pull/12719
PR: https://git.openjdk.org/jdk/pull/12719
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