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Article #623538Re: BCD, binary, accounting or financial planning?
From: Charlie Gibbs
Date: Sun, 20 May 2018 12:35
Date: Sun, 20 May 2018 12:35
22 lines
2409 bytes
2409 bytes
On 2018-05-20, Gareth's Downstairs Computer <headstone255.but.n...@yahoo.com> wrote: > Subject to storage and time limitations, all the major > processors are Turing machines that can be programmed to > give you 1000+ digits of integer plus 1000+ digits of fraction > in either binary or decimal. One quirk of the Univac 9300 was that it ignored the multiplicand length specification in the MP instruction and scanned through memory until it found a valid sign. I discovered this one when I accidentally packed a blank in the low-level byte and found that fields beyond the multiplicand were being clobbered. I exploited this by writing a program to calculate factorials in a field that was 50,000 digits long. Each multiplication took about half a second. -- /~\ cgibbs@kltpzyxm.invalid (Charlie Gibbs) \ / I'm really at ac.dekanfrus if you read it the right way. X Top-posted messages will probably be ignored. See RFC1855. / \ Fight low-contrast text in web pages! http://contrastrebellion.com
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X-Received: by 2002:a6b:a54a:: with SMTP id o71-v6mr9473389ioe.123.1526820592363; Sun, 20 May 2018 05:49:52 -0700 (PDT) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 2002:a6b:d619:: with SMTP id w25-v6ls425996ioa.12.gmail; Sun, 20 May 2018 05:49:51 -0700 (PDT) X-Received: by 2002:a6b:328:: with SMTP id 40-v6mr9628312iod.130.1526820591606; Sun, 20 May 2018 05:49:51 -0700 (PDT) MIME-Version: 1.0 Path: mbox-mo1.pugleaf.net!f20-v6ni4091itd.0!nntp.google.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!goblin2!goblin.stu.neva.ru!newsfeed.xs4all.nl!newsfeed7.news.xs4all.nl!85.12.16.68.MISMATCH!peer01.ams1!peer.ams1.xlned.com!news.xlned.com!peer01.am4!peer.am4.highwinds-media.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!spln!extra.newsguy.com!newsp.newsguy.com!news7 From: Charlie Gibbs <cgibbs@kltpzyxm.invalid> Newsgroups: alt.folklore.computers Subject: Re: BCD, binary, accounting or financial planning? Date: 20 May 2018 12:35:38 GMT Organization: NewsGuy.com Lines: 22 Message-ID: <pdrq2q1mbj@news7.newsguy.com> References: <pdrh1g$99i$1@dont-email.me> NNTP-Posting-Host: p46f45945139659b1d67f5617cbb9a1ff4c01136ef8883f9b.newsdawg.com User-Agent: slrn/1.0.1 (Linux) X-Received-Bytes: 1643 X-Received-Body-CRC: 266440352 Bytes: 1911 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit