From: Bill Findlay <yaldnif.w@blueyonder.co.uk>
Subject: Re: Why use C++?
Date: Fri, 12 Aug 2011 18:02:33 +0100
Date: 2011-08-12T18:02:33+01:00 [thread overview]
Message-ID: <CA6B1B39.1A5C%yaldnif.w@blueyonder.co.uk> (raw)
In-Reply-To: e9987381-4f7b-4d25-9c9b-429fd4da74f6@k15g2000yqd.googlegroups.com
On 12/08/2011 16:50, in article
e9987381-4f7b-4d25-9c9b-429fd4da74f6@k15g2000yqd.googlegroups.com, "Stuart
Redmann" <DerTopper@web.de> wrote:
> Stuart Redmann wrote:
> [snip]
>>> Be honest, how often do you really _want_ a wrapping int?
>
> On 12 Aug. Vinzent Hoefler wrote:
>> Thinking indices instead of pointers, quite often, actually.
>
> Could you please provide some example? Seriously, I'm really
> interested in the usage of wrapping types since in the last ten years
> I have not felt the need for wrapping ints at all (well, maybe two or
> three times).
In my current project, the following are all defined in one unit:
type nest_depth is mod 19;
type sjns_depth is mod 17;
type word is mod 2**48;
type field_of_16_bits is mod 2**16;
type syllable is mod 2**8;
type halfword is mod 2**24;
type symbol is mod 2**6;
type symbol_number is mod 8;
type microseconds is mod 2**64;
type priority is mod 2**2;
type one_bit is mod 2;
type context is mod 2**2;
type INS_kind is mod 2**2;
type order_counter is mod 2**64;
For most of these, the wrapping behaviour is exactly what is needed
to model computer hardware (they are from a KDF9 emulator).
nest_depth and sjns_depth, in particular, are the index types of cyclic
buffers.
--
Bill Findlay
with blueyonder.co.uk;
use surname & forename;
next prev parent reply other threads:[~2011-08-12 17:02 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fb9f787c-af06-427a-82b6-b0684e8dcbc5@s2g2000vby.googlegroups.com>
[not found] ` <j1kaj8$dge$1@adenine.netfront.net>
[not found] ` <1e292299-2cbe-4443-86f3-b19b8af50fff@c29g2000yqd.googlegroups.com>
[not found] ` <j1tha5$11q5$1@adenine.netfront.net>
[not found] ` <1fd0cc9b-859d-428e-b68a-11e34de84225@gz10g2000vbb.googlegroups.com>
2011-08-10 19:05 ` Why use C++? Niklas Holsti
2011-08-10 22:37 ` Randy Brukardt
2011-08-10 22:49 ` Ludovic Brenta
2011-08-12 4:54 ` Randy Brukardt
2011-08-11 7:54 ` Dmitry A. Kazakov
2011-08-11 8:20 ` Jed
2011-08-11 9:13 ` Dmitry A. Kazakov
2011-08-11 10:57 ` Jed
2011-08-11 11:43 ` Georg Bauhaus
2011-08-12 5:07 ` Jed
2011-08-11 13:11 ` Nomen Nescio
2011-08-11 15:11 ` Paul
2011-08-12 5:15 ` Jed
2011-08-12 21:39 ` Fritz Wuehler
2011-08-14 6:52 ` Jed
2011-08-14 8:13 ` Nomen Nescio
2011-08-11 15:09 ` Dmitry A. Kazakov
2011-08-12 5:03 ` Jed
2011-08-12 8:32 ` Georg Bauhaus
2011-08-12 13:15 ` Hyman Rosen
2011-08-12 22:09 ` Randy Brukardt
2011-08-12 15:14 ` Jed
2011-08-12 17:20 ` Georg Bauhaus
2011-08-12 19:51 ` Jed
2011-08-12 21:22 ` Ludovic Brenta
2011-08-14 7:00 ` Jed
2011-08-16 13:06 ` Ludovic Brenta
2011-08-13 9:37 ` Georg Bauhaus
2011-08-14 5:22 ` Jed
2011-08-13 10:27 ` Georg Bauhaus
2011-08-14 5:35 ` Jed
2011-08-14 20:13 ` Georg Bauhaus
2011-08-15 11:38 ` Georg Bauhaus
2011-08-13 11:02 ` Georg Bauhaus
2011-08-14 5:56 ` Jed
2011-08-12 9:21 ` Dmitry A. Kazakov
2011-08-12 13:26 ` Jed
2011-08-12 14:30 ` Dmitry A. Kazakov
2011-08-12 19:06 ` Jed
2011-08-12 20:05 ` Dmitry A. Kazakov
2011-08-13 7:53 ` Jed
2011-08-13 9:15 ` Dmitry A. Kazakov
2011-08-13 9:29 ` Ian Collins
2011-08-13 9:52 ` Dmitry A. Kazakov
2011-08-13 11:10 ` Ian Collins
2011-08-13 11:46 ` Georg Bauhaus
2011-08-13 20:30 ` Ian Collins
2011-08-13 11:54 ` Brian Drummond
2011-08-13 13:12 ` Simon Wright
2011-08-14 11:01 ` Brian Drummond
2011-08-14 4:54 ` Jed
2011-08-14 4:35 ` Jed
2011-08-14 6:46 ` Dmitry A. Kazakov
2011-08-14 4:49 ` Jed
2011-08-14 6:51 ` Dmitry A. Kazakov
2011-08-14 4:29 ` Jed
2011-08-14 7:29 ` Dmitry A. Kazakov
2011-08-16 8:18 ` Nick Keighley
2011-08-16 8:47 ` Dmitry A. Kazakov
2011-08-16 9:52 ` Nick Keighley
2011-08-16 10:39 ` Dmitry A. Kazakov
2011-08-16 10:23 ` Georg Bauhaus
2011-08-16 10:58 ` Dmitry A. Kazakov
2011-08-16 11:44 ` Georg Bauhaus
2011-08-16 14:51 ` Bill Findlay
2011-08-16 19:13 ` Dmitry A. Kazakov
2011-08-16 19:23 ` Bill Findlay
2011-08-12 11:48 ` Stuart Redmann
2011-08-12 13:12 ` Vinzent Hoefler
2011-08-12 15:50 ` Stuart Redmann
2011-08-12 17:02 ` Bill Findlay [this message]
2011-08-15 12:59 ` Vinzent Hoefler
2011-08-12 5:02 ` Randy Brukardt
2011-08-12 5:16 ` Robert Wessel
2011-08-12 16:39 ` Adam Beneschan
2011-08-12 5:24 ` Jed
2011-08-12 6:51 ` Paavo Helde
2011-08-12 7:41 ` Georg Bauhaus
2011-08-12 15:50 ` Fritz Wuehler
2011-08-12 19:59 ` Jed
2011-08-13 8:06 ` Stephen Leake
2011-08-12 9:40 ` Dmitry A. Kazakov
2011-08-12 9:45 ` Ludovic Brenta
2011-08-12 10:48 ` Georg Bauhaus
2011-08-12 15:56 ` Ludovic Brenta
2011-08-13 8:08 ` Stephen Leake
2011-08-18 13:39 ` Louisa
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