| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Dagfinn Ilmari Mannsåker <ilmari(at)ilmari(dot)org> |
| Cc: | pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: random() function documentation |
| Date: | 2022-04-11 18:45:19 |
| Message-ID: | 432790.1649702719@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
=?utf-8?Q?Dagfinn_Ilmari_Manns=C3=A5ker?= <ilmari(at)ilmari(dot)org> writes:
> I just noticed that the since the random() rewrite¹, the documentation's
> claim² that it "uses a simple linear congruential algorithm" is no
> longer accurate (xoroshiro128** is an xorshift variant, which is a
> linear-feedback shift register algorithm).
> I don't have a suggestion for the exact wording, since I don't know
> whether xoroshiro128** qualifies as "simple", or to what level of
> specificity we want to document the algorithm.
How about we just say "uses a linear-feedback shift register algorithm"?
"Simple" is in the eye of the beholder anyway.
regards, tom lane
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