From: AdaMagica <christ-usch.grein@t-online.de>
Subject: Re: Integers and Mathematical Correctness
Date: Fri, 26 Sep 2014 09:58:59 -0700 (PDT)
Date: 2014-09-26T09:58:59-07:00 [thread overview]
Message-ID: <98f0066e-4b5c-4b00-b811-dcbb13ed0fcf@googlegroups.com> (raw)
In-Reply-To: <c8lj3gFaqrfU1@mid.individual.net>
On Friday, September 26, 2014 6:38:10 PM UTC+2, Niklas Holsti wrote:
> False. Ada can overload operators on the result type, so you can very
> well add
>
> function "/" (Left, Right : Integer) return Rational;
>
> and have both"/" visible and used with in-fix notation.
Nah, it's not that easy. The reason is that Integer is defined in Standard, which always has precedence for any use-clause.
You need a separate integer type
type Whole is range ...
function "/" (Left, Right: Whole) return Rational;
There is a complete implementation in
http://www.christ-usch-grein.homepage.t-online.de/Ada/Dimension/SI.html
with Text_IO, Image and Value; appropriate test units exist also.
GNAT had much fun with overload resolution - it took very long until it could deal with my rational numbers.
next prev parent reply other threads:[~2014-09-26 16:58 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-31 20:27 Integers and Mathematical Correctness chris.danx
2001-10-31 21:21 ` David C. Hoos
2001-10-31 22:16 ` chris.danx
2001-10-31 22:47 ` David C. Hoos
2001-10-31 22:55 ` chris.danx
2001-10-31 23:16 ` Matthew Heaney
2001-10-31 21:42 ` Mark Johnson
2001-11-01 18:57 ` Mark Johnson
2001-11-01 14:32 ` Wes Groleau
2001-11-01 16:18 ` wilhelm.spickermann
2001-11-01 16:48 ` chris.danx
2001-11-01 15:45 ` Charles Sampson
2001-11-01 16:20 ` Marin David Condic
2001-11-03 17:02 ` Richard Riehle
2001-11-05 14:47 ` Marin David Condic
2001-11-06 3:53 ` Eric G. Miller
2001-11-06 4:28 ` James Rogers
2001-11-06 6:06 ` peter
2001-11-06 14:48 ` James Rogers
2001-11-06 15:54 ` Marin David Condic
2001-11-07 3:44 ` Eric G. Miller
2001-11-01 17:10 ` chris.danx
2001-11-01 17:52 ` Chad Robert Meiners
2001-11-01 19:02 ` chris.danx
2001-11-01 17:57 ` Wes Groleau
2001-11-03 14:57 ` Charles Sampson
2001-11-01 16:11 ` Charles Lindsey
2001-11-01 18:40 ` Wilhelm Spickermann
2001-11-01 19:18 ` chris.danx
2001-11-02 1:37 ` Steven Deller
2014-09-26 9:07 ` vincent.diemunsch
2014-09-26 16:38 ` Niklas Holsti
2014-09-26 16:58 ` AdaMagica [this message]
2014-09-26 17:51 ` Adam Beneschan
2014-09-27 9:01 ` AdaMagica
2014-09-27 10:15 ` AdaMagica
2014-09-27 16:32 ` Niklas Holsti
2014-09-27 16:49 ` Jeffrey Carter
2014-09-27 18:52 ` Niklas Holsti
2014-09-27 18:54 ` Adam Beneschan
2014-09-27 19:07 ` Adam Beneschan
[not found] ` <3489504a-f82b-4fec-8a6c-7cb91854dd1e@googlegroups.com>
2014-09-27 19:21 ` AdaMagica
2014-09-27 11:44 ` gautier_niouzes
2014-09-26 16:41 ` Adam Beneschan
2014-09-26 16:46 ` Adam Beneschan
2014-09-27 15:21 ` vincent.diemunsch
[not found] ` <34da5a39-9fa3-4e8e-a3f9-98f61a4ebcc7@googlegroups.com>
2014-09-28 7:47 ` Dmitry A. Kazakov
2014-09-29 14:58 ` Adam Beneschan
2014-09-29 16:25 ` Dmitry A. Kazakov
2014-10-01 19:48 ` vincent.diemunsch
2014-10-02 11:10 ` G.B.
2001-11-01 18:08 ` Tucker Taft
2001-11-01 18:54 ` David Starner
2001-11-01 21:44 ` Wilhelm Spickermann
2001-11-02 12:52 ` chris.danx
-- strict thread matches above, loose matches on Subject: below --
2001-10-31 22:42 Beard, Frank
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