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Groups > comp.sys.raspberry-pi > #25426
| From | Martin Gregorie <martin@mydomain.invalid> |
|---|---|
| Newsgroups | comp.sys.raspberry-pi |
| Subject | Re: USB card adapters crash Pi4 |
| Date | 2021-01-04 11:33 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <rsuuen$epp$1@dont-email.me> (permalink) |
| References | (13 earlier) <rsskuc$pim$1@dont-email.me> <rssoki$19an$1@gioia.aioe.org> <20210103182819.478f6039@jresid.jretrading.com> <rst55f0362@news2.newsguy.com> <rsu1c7$mce$4@dont-email.me> |
On Mon, 04 Jan 2021 03:17:27 +0000, The Natural Philosopher wrote: > On 03/01/2021 19:15, Charlie Gibbs wrote: >> On 2021-01-03, Joe <joe@jretrading.com> wrote: >> >>> On Sun, 03 Jan 2021 15:41:04 GMT Jan Panteltje >>> <pNaOnStPeAlMtje@yahoo.com> wrote: >>> >>>> I use an asm math library written by someone else, >>>> so far 32 bit integer was all I needed, >>> >>> "If you need to use floating-point arithmetic in FORTH, >>> you do not fully understand your application" >>> >>> Not sure if it was Charles Moore or Leo Brodie who said that. >> >> It makes sense, though, depending on your applications. >> In 50 years of commercial programming, I can count the number of times >> I've used floating point on the fingers of one hand. >> > Odd. I use it extensively. Not for money oriented stuff tho Not that odd: in a 30 year IT career (system design, programming, sysadmin, much of it databases and finance-related systems) I can only think of one survey analysis program I wrote, in Algol 60, that used floating point (and that was for a one-off task). Financial systems never use floating point for accuracy reasons: consequently integers are used to hold currency amounts: sterling amounts are held as pence, euros and dollars as cents and the equivalent convention is used for all other currencies. The only exception I'm aware of was financial packages written in BASIC for early microcomputers, and that was only because (a) integers tended to be 16 bits at most and (b) their PRINT statements often couldn't interpolate a decimal point when displaying an integer value. OTOH COBOL was designed from the outset to deal with currency amounts held as integers: 77 INVOICE-TOTAL PIC £99,999,990.00CR COMP SYNC BLANK WHEN ZERO. might look as if its floating point but, the variable would be a 32 bit signed integer which would be read or written as a string containing the currency sign, possibly containing comma separators and with a decimal point separating pounds from pence. RPG (UGH!) does the same and all modern languages (and assemblers) have sufficiently powerful number scanning and formatting library functions to do the same. -- -- Martin | martin at Gregorie | gregorie dot org
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USB card adapters crash Pi4 bob prohaska <bp@www.zefox.net> - 2021-01-01 20:53 +0000
Re: USB card adapters crash Pi4 Nikolaj Lazic <nlazicBEZ_OVOGA@mudrac.ffzg.hr> - 2021-01-01 23:32 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 00:52 +0000
Re: USB card adapters crash Pi4 bob prohaska <bp@www.zefox.net> - 2021-01-02 02:13 +0000
Re: USB card adapters crash Pi4 "Dave Liquorice" <allsortsnotthisbit@howhill.com> - 2021-01-02 09:49 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 12:34 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 12:51 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 13:23 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 14:52 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 17:27 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 18:05 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 19:45 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 20:41 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-03 05:53 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-03 14:39 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-03 15:41 +0000
Re: USB card adapters crash Pi4 Joe <joe@jretrading.com> - 2021-01-03 18:38 +0000
Re: USB card adapters crash Pi4 Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-03 19:15 +0000
Re: USB card adapters crash Pi4 The Natural Philosopher <tnp@invalid.invalid> - 2021-01-04 03:17 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 11:33 +0000
Re: USB card adapters crash Pi4 Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-04 12:24 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 13:58 +0000
Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-04 10:21 -0500
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 15:33 +0000
Re: USB card adapters crash Pi4 Björn Lundin <b.f.lundin@gmail.com> - 2021-01-23 23:03 +0100
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-23 22:54 +0000
Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-23 18:30 -0500
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-24 14:42 +0000
Re: USB card adapters crash Pi4 Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-23 23:31 +0000
Re: USB card adapters crash Pi4 Scott Alfter <scott@alfter.diespammersdie.us> - 2021-01-25 17:23 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-25 18:31 +0000
Re: USB card adapters crash Pi4 Jim H <invalid@invalid.invalid> - 2021-01-25 18:47 +0000
Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-26 10:59 -0500
Re: USB card adapters crash Pi4 Scott Alfter <scott@alfter.diespammersdie.us> - 2021-01-26 17:13 +0000
Re: USB card adapters crash Pi4 mjb@signal11.invalid (Mike) - 2021-01-26 23:11 +0000
Re: USB card adapters crash Pi4 Richard Kettlewell <invalid@invalid.invalid> - 2021-01-25 18:55 +0000
Re: USB card adapters crash Pi4 Dennis <dennis@none.none> - 2021-01-25 15:21 -0600
Re: USB card adapters crash Pi4 The Natural Philosopher <tnp@invalid.invalid> - 2021-01-24 09:36 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-03 19:36 +0000
Re: USB card adapters crash Pi4 Joe <joe@jretrading.com> - 2021-01-03 21:16 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-03 22:40 +0000
Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-03 20:44 -0500
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 11:46 +0000
Re: USB card adapters crash Pi4 Joe <joe@jretrading.com> - 2021-01-04 09:38 +0000
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 12:03 +0000
Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-04 11:01 -0500
Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 17:15 +0000
Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-04 14:03 -0500
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-05 06:17 +0000
Re: USB card adapters crash Pi4 Deloptes <deloptes@gmail.com> - 2021-01-02 16:06 +0100
Re: USB card adapters crash Pi4 A. Dumas <alexandre@dumas.fr.invalid> - 2021-01-02 16:36 +0000
Re: USB card adapters crash Pi4 The Natural Philosopher <tnp@invalid.invalid> - 2021-01-02 16:38 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 17:29 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 17:18 +0000
Re: USB card adapters crash Pi4 David Higton <dave@davehigton.me.uk> - 2021-01-02 20:21 +0000
Re: USB card adapters crash Pi4 Theo <theom+news@chiark.greenend.org.uk> - 2021-01-03 10:07 +0000
Re: USB card adapters crash Pi4 Theo <theom+news@chiark.greenend.org.uk> - 2021-01-03 18:39 +0000
Re: USB card adapters crash Pi4 "Dave Liquorice" <allsortsnotthisbit@howhill.com> - 2021-01-02 13:08 +0000
Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 09:10 +0000
Re: USB card adapters crash Pi4 druck <news@druck.org.uk> - 2021-01-02 12:36 +0000
Re: USB card adapters crash Pi4 bob prohaska <bp@www.zefox.net> - 2021-01-02 20:45 +0000
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