From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=unavailable autolearn_force=no version=3.4.4 X-Received: by 10.157.41.212 with SMTP id g20mr1362391otd.126.1475292942206; Fri, 30 Sep 2016 20:35:42 -0700 (PDT) X-Received: by 10.157.11.146 with SMTP id 18mr952626oth.13.1475292942178; Fri, 30 Sep 2016 20:35:42 -0700 (PDT) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!news.glorb.com!184no396352ity.0!news-out.google.com!203ni3157itk.0!nntp.google.com!184no396348ity.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Fri, 30 Sep 2016 20:35:41 -0700 (PDT) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=2601:191:8302:3f70:5985:2c17:9409:aa9c; posting-account=fdRd8woAAADTIlxCu9FgvDrUK4wPzvy3 NNTP-Posting-Host: 2601:191:8302:3f70:5985:2c17:9409:aa9c References: <5db08ea5-c088-4d16-9d88-d058e4bc48df@googlegroups.com> <62fef12a-90fb-4ac8-8e59-99568b914ee7@googlegroups.com> <8bb59ac2-f5ba-44df-87ae-63d3dd47f0a3@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <875ab579-a6b3-4552-b1a8-16f68da6d704@googlegroups.com> Subject: Re: Ada.Numerics.Float_Random.Generator question From: Robert Eachus Injection-Date: Sat, 01 Oct 2016 03:35:42 +0000 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Xref: news.eternal-september.org comp.lang.ada:31952 Date: 2016-09-30T20:35:41-07:00 List-Id: On Thursday, September 29, 2016 at 5:42:17 AM UTC-4, Some Dude wrote: > To add to Bruce's comment, aren't *all* PRNGs cyclic? I was always under = this impression, but admittedly never looked for a proof. No, a simple counter-example is a generator that uses the digits of pi. Th= e digits of any transcendental number will do. I'll have to think about gen= erator based on a square root. (Not about whether it would work, it would. = But about how to implement it so that you don't have arbitrary pauses. Hm= m. One task to generate the root? Managing priorities could be tricky.)