From: "Peter C. Chapin" <chapinp@acm.org>
Subject: Re: Question about ordinary fixed point types.
Date: Mon, 16 Aug 2010 16:31:07 -0400
Date: 2010-08-16T16:31:07-04:00 [thread overview]
Message-ID: <4c69a02b$0$2369$4d3efbfe@news.sover.net> (raw)
In-Reply-To: <wcc4oeubpiq.fsf@shell01.TheWorld.com>
On 2010-08-16 10:28, Robert A Duff wrote:
> I'd expect "*" and "/" to be faster for binary smalls,
> but I don't think it makes any difference for "+" and "-".
> Multiplying angles by angles doesn't make much sense...
Probably true. On the other hand I anticipate needing other fixed point
types before I'm done so I think it would serve me well to get used to
using binary smalls.
> You can test your test. That is, write the loop using the
> advice elsewhere in this thread, and unchecked-convert
> each value to an integer of the same size, and see if
> you get the integer representations you are expecting.
I might try that for interest's sake. If I understand you properly, I'd
have to (re)run that test for each implementation that I use. Of course,
I'm not really using very many implementations (just two).
Peter
next prev parent reply other threads:[~2010-08-16 20:31 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-15 21:43 Question about ordinary fixed point types Peter C. Chapin
2010-08-15 21:55 ` Shark8
2010-08-16 0:46 ` Peter C. Chapin
2010-08-16 4:13 ` Jeffrey Carter
2010-08-16 8:57 ` Simon Wright
2010-08-15 22:08 ` Yannick Duchêne (Hibou57)
2010-08-16 1:03 ` Peter C. Chapin
2010-08-16 4:11 ` Jeffrey Carter
2010-08-16 10:03 ` Ludovic Brenta
2010-08-17 14:35 ` sjw
2010-08-17 15:51 ` Ludovic Brenta
2010-08-16 11:31 ` Peter C. Chapin
2010-08-16 9:23 ` Simon Wright
2010-08-16 15:47 ` Simon Wright
2010-08-17 14:37 ` sjw
2010-08-16 11:02 ` Stephen Leake
2010-08-16 11:29 ` Peter C. Chapin
2010-08-16 12:53 ` Dmitry A. Kazakov
2010-08-16 20:28 ` Peter C. Chapin
2010-08-16 20:58 ` Adam Beneschan
2010-08-16 13:01 ` Dmitry A. Kazakov
2010-08-16 14:28 ` Robert A Duff
2010-08-16 20:31 ` Peter C. Chapin [this message]
2010-08-16 23:01 ` Robert A Duff
2010-08-16 23:17 ` Peter C. Chapin
2010-08-17 0:56 ` Robert A Duff
2010-08-17 2:03 ` Stephen Leake
2010-08-20 1:21 ` Yannick Duchêne (Hibou57)
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