Improving Random

[dominic at steinitz.org]

We shouldn’t lost sight of what a big improvement this is; in some cases it is more than x1000 better!

| Name                    | Mean (1.1) | Mean (1.2) | Improvement|
| ----------------------- | ---------- | ---------- | ---------- |
| pure/random/Float       |         30 |       0.03 |        1038|
| pure/random/Double      |         52 |       0.03 |        1672|
| pure/random/Integer     |         43 |       0.33 |         131|
| pure/uniform/Word8      |         14 |       0.03 |         422|
| pure/uniform/Word16     |         13 |       0.03 |         375|
| pure/uniform/Word32     |         21 |       0.03 |         594|
| pure/uniform/Word64     |         42 |       0.03 |        1283|
| pure/uniform/Word       |         44 |       0.03 |        1491|
| pure/uniform/Int8       |         15 |       0.03 |         511|
| pure/uniform/Int16      |         15 |       0.03 |         507|
| pure/uniform/Int32      |         22 |       0.03 |         749|
| pure/uniform/Int64      |         44 |       0.03 |        1405|
| pure/uniform/Int        |         43 |       0.03 |        1512|
| pure/uniform/Char       |         17 |       0.49 |          35|
| pure/uniform/Bool       |         18 |       0.03 |         618|
(Times in milliseconds per 100,000 generations)

> On 29 May 2020, at 13:00, libraries-request at haskell.org wrote:
> 
> Zemyla, Richard and Carter: thanks for your questions! The proposal is
> large, and though we've tried to document things thoroughly (see links at
> the end of the email), the motivation behind and consequences of some
> decisions are not obvious.
> 
> I don't want this proposal to stall. If you have follow-up questions,
> please ask them! If your questions have been answered by one of the
> detailed replies in this thread, would you mind saying so?
> 
> Haddocks:
> https://htmlpreview.github.io/?https://raw.githubusercontent.com/idontgetoutmuch/random/haddock-preview/doc/index.html <https://htmlpreview.github.io/?https://raw.githubusercontent.com/idontgetoutmuch/random/haddock-preview/doc/index.html>
> Motivation and design:
> https://github.com/idontgetoutmuch/random/blob/v1.2-release-notes/RELEASE-NOTES-v1.2.md <https://github.com/idontgetoutmuch/random/blob/v1.2-release-notes/RELEASE-NOTES-v1.2.md>
> Benchmarks:
> https://github.com/idontgetoutmuch/random/blob/v1.2-proposal/CHANGELOG.md#benchmarks <https://github.com/idontgetoutmuch/random/blob/v1.2-proposal/CHANGELOG.md#benchmarks>

Dominic Steinitz
dominic at steinitz.org
http://idontgetoutmuch.org
Twitter: @idontgetoutmuch


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