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authorTom Lane2022-07-23 23:00:29 +0000
committerTom Lane2022-07-23 23:00:33 +0000
commit6955bba0ede45e9379d04d7faaa889448919aa07 (patch)
treea29d22acc65431de0d98d7b2cc5e70dd1a0672ff /src
parente757cdd6ad1bc757df7a73616bde8d7e1cb2828a (diff)
Doc: improve documentation about random().
We didn't explicitly say that random() uses a randomly-chosen seed if you haven't called setseed(). Do so. Also, remove ref/set.sgml's no-longer-accurate (and never very relevant) statement that the seed value is multiplied by 2^31-1. Back-patch to v12 where set.sgml's claim stopped being true. The claim that we use a source of random bits as seed was debatable before 4203842a1, too, so v12 seems like a good place to stop. Per question from Carl Sopchak. Discussion: https://postgr.es/m/f37bb937-9d99-08f0-4de7-80c91a3cfc2e@sopchak.me
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