From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 20903 invoked from network); 16 Feb 2022 08:15:26 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 16 Feb 2022 08:15:26 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id BF6329D0C2; Wed, 16 Feb 2022 18:15:22 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 9B2F19D036; Wed, 16 Feb 2022 18:13:38 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 823C49D036; Wed, 16 Feb 2022 18:13:36 +1000 (AEST) Received: from marmaro.de (marmaro.de [176.28.23.198]) by minnie.tuhs.org (Postfix) with ESMTP id A628F9D035 for ; Wed, 16 Feb 2022 18:13:34 +1000 (AEST) Received: by marmaro.de (masqmail 0.3.6-dev, from userid 1000) id 1nKFRN-4IZ-00 for ; Wed, 16 Feb 2022 09:13:33 +0100 To: tuhs@minnie.tuhs.org In-reply-to: <202202160754.21G7sbUa011318@freefriends.org> References: <202202160754.21G7sbUa011318@freefriends.org> Comments: In-reply-to arnold@skeeve.com message dated "Wed, 16 Feb 2022 00:54:37 -0700." MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <16526.1644999213.1@marmaro.de> Content-Transfer-Encoding: quoted-printable Date: Wed, 16 Feb 2022 09:13:33 +0100 From: markus schnalke Message-ID: <1nKFRN-4IZ-00@marmaro.de> Subject: Re: [TUHS] Lorinda Cherry X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Hoi. [2022-02-16 00:54] arnold@skeeve.com > Dave Horsfall wrote: > > On Wed, 16 Feb 2022, George Michaelson wrote: > > > > > I use BC as a daily driver like most people. I never quite got DC, an= d = > > > wondered at the duality of them. Very interesting to have the backgro= und = > > > explained. > > > > You know you're a greybeard if you can remember why the DC sequence = > > "99k2vp8opq" was so popular... > > > > -- Dave > = > I guess I'm not enough of a greybeard: > = > $ dc > 99k2vp8opq > 1.4142135623730950488016887242096980785696718753769480731766797379907\ > 32478462107038850387534327641572 > 1.3240474631771674622042627661154672512575174353366027242235650231664\ > 2753102603147144252257620301035270505416503 > = > I recognize the first value as the square root of two. What is > the second value? Decoding the program with the manpage: 99k set scaling factor to 99 (i.e. 99 digits on output) 2v square root of 2 p print it (but leave it on the stack) 8o switch to octal output p print the same value (now in octal) q quit More interesting is the question why you need sqrt(2) in octal? meillo