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Groups > comp.sys.acorn.programmer > #5998
| Subject | Re: Subtracting times |
|---|---|
| Newsgroups | comp.sys.acorn.programmer |
| From | Alan Adams <alan@adamshome.org.uk> |
| Date | 2020-02-24 11:12 +0000 |
| Message-ID | <21f8494758.Alan.Adams@ArmX6.adamshome.org.uk> (permalink) |
| References | (1 earlier) <0a59594458.jmb@jmc.bruck.orange.fr> <80ec8ad6-58f7-4862-8ccd-34d8d5627c3c@googlegroups.com> <12ecd44558.Alan.Adams@ArmX6.adamshome.org.uk> <20c98ac0-98f6-4d7a-be0a-8ccaf93e1276@googlegroups.com> <r308ag$h4j$1@gioia.aioe.org> |
| Organization | Orpheus Internet Services |
In message <r308ag$h4j$1@gioia.aioe.org>
Steve Drain <steve@kappa.me.uk> wrote:
> jgh@mdfs.net wrote:
>> Alan Adams wrote:
>>> The 5-byte integer values looks correct, but cannot be returned to BASIC.
>>
>> While you can't use the 5-byte integers, you can store and retrieve
>> them with | and hold them in reals, as long as you treat them as
>> opaque values and don't "look" at them. So you can do: |here%=|there%
>> and bar=FNfoo with DEFFNfoo ending with =|somewhere
> In Basalt time values are held in float variables in just this way, but
> the manipulation is transparent when used with appropriate keywords.
> And I, too, have a more-or-less equivalent library in just BASIC.
> In neither is there a function to satisfy the OP. The nearest is a time
> difference in seconds, which always fits into an signed integer.
And thank you to all who have contributed. I now have several options to
use. My preference is Martin's, because although all the options return
the time difference in an integer for valid ranges, Martin's returns a
defined -1 to indicate negative or overflow, which helps with the calling
code.
--
Alan Adams, from Northamptonshire
alan@adamshome.org.uk
http://www.nckc.org.uk/
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Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-18 11:55 +0000
Re: Subtracting times Jean-Michel <jmc.bruck@orange.fr> - 2020-02-18 19:11 +0100
Re: Subtracting times Steve Drain <steve@kappa.me.uk> - 2020-02-21 03:28 -0800
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-21 12:45 +0000
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-21 15:17 +0000
Re: Subtracting times Steve Drain <steve@kappa.me.uk> - 2020-02-22 10:37 +0000
Re: Subtracting times Steve Drain <steve@kappa.me.uk> - 2020-02-25 16:05 +0000
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-25 16:35 +0000
Re: Subtracting times Steve Drain <steve@kappa.me.uk> - 2020-02-27 17:10 +0000
Re: Subtracting times Steve Drain <steve@kappa.me.uk> - 2020-02-27 10:06 -0800
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-28 11:21 +0000
Re: Subtracting times jeffrey.a.doggett@gmail.com - 2020-04-22 12:00 -0700
Re: Subtracting times Martin <News03@avisoft.f9.co.uk> - 2020-04-23 00:07 +0100
Re: Subtracting times jeffrey.a.doggett@gmail.com - 2020-04-23 03:13 -0700
Re: Subtracting times Martin <News03@avisoft.f9.co.uk> - 2020-04-23 18:01 +0100
Re: Subtracting times "John Williams (News)" <UCEbin@tiscali.co.uk> - 2020-04-23 18:06 +0100
Re: Subtracting times jeffrey.a.doggett@gmail.com - 2020-04-23 11:18 -0700
Re: Subtracting times Martin <News03@avisoft.f9.co.uk> - 2020-04-23 21:23 +0100
Re: Subtracting times David Higton <dave@davehigton.me.uk> - 2020-04-24 15:24 +0100
Re: Subtracting times David Higton <dave@davehigton.me.uk> - 2020-04-23 20:57 +0100
Re: Subtracting times jgh@mdfs.net - 2020-02-23 17:39 -0800
Re: Subtracting times Steve Drain <steve@kappa.me.uk> - 2020-02-24 10:23 +0000
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-24 11:12 +0000
Re: Subtracting times Martin <News03@avisoft.f9.co.uk> - 2020-02-24 13:05 +0000
Re: Subtracting times Matthew Phillips <spam2011m@yahoo.co.uk> - 2020-02-19 08:35 +0000
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-19 10:03 +0000
Re: Subtracting times Sebastian Barthel <naitsabes@freenet.de> - 2020-02-19 13:04 +0000
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-19 16:41 +0000
Re: Subtracting times jgh@mdfs.net - 2020-02-19 12:01 -0800
Re: Subtracting times Matthew Phillips <spam2011m@yahoo.co.uk> - 2020-02-23 20:46 +0000
Re: Subtracting times Martin <News03@avisoft.f9.co.uk> - 2020-02-19 23:54 +0000
Re: Subtracting times Alan Adams <alan@adamshome.org.uk> - 2020-02-20 11:18 +0000
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