From: "jimmaureenrogers@worldnet.att.net" <jimmaureenrogers@worldnet.att.net>
Subject: Re: why learn C?
Date: 2 Apr 2007 19:58:55 -0700
Date: 2007-04-02T19:58:55-07:00 [thread overview]
Message-ID: <1175569135.870153.100890@y66g2000hsf.googlegroups.com> (raw)
In-Reply-To: <1175501602.127760.186120@q75g2000hsh.googlegroups.com>
On Apr 2, 2:13 am, "kevin cline" <kevin.cl...@gmail.com> wrote:
> On Mar 30, 9:41 pm, "jimmaureenrog...@worldnet.att.net" For instance:
> > No, run time checks are needed for things that cannot be checked at
> > compile time. Ada helps is more helpful with run time checks than is
> > C or C++ due to the automated check writing built by the compilers.
> > For instance, if you define an integer type with a valid range of
> > values from -10 to 10, the compiler will perform all necessary
> > range checking for that type.
>
> > type My_Int is range -10..10;
>
> That's perfect if it happens to be the exact thing that you need. It
> doesn't help much if what you need is a point inside the unit circle.
>
That is an interesting non-sequiter. No integer type would be
satisfactory to define a point within a unit circle.
> In C++ the language provides neither of these things, but they are
> both be implemented in a few lines of code.
>
> In Ada, the implementation of the constrained point is not so
> obvious.
You want a type for specification of a point within a unit circle.
Is this really hard to comprehend:
type Unit_Radius_Type is digits 15 range 0.0..1.0;
type Angle is digits 15 range 0.0..2.0 * Pi;
type Circular_Point is record
X : Unit_Radius_Type;
Theta : Angle;
end record;
Given any unit circle with a known center coordinate, all
points can be designated within 15 digits of accuracy.
Please demonstrate how you would use C++ templates to
create an equivalent definition. I am most curious about the
range-specified and precision-specified floating point types.
Jim Rogers
next prev parent reply other threads:[~2007-04-03 2:58 UTC|newest]
Thread overview: 167+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1172144043.746296.44680@m58g2000cwm.googlegroups.com>
[not found] ` <slrnetr31o.875.Marc.Boyer@localhost.localdomain>
[not found] ` <1172161751.573558.24140@h3g2000cwc.googlegroups.com>
[not found] ` <slrnetri6j.875.Marc.Boyer@localhost.localdomain>
[not found] ` <546qkhF1tr7dtU1@mid.individual.net>
2007-02-23 8:09 ` why learn C? Marc Boyer
2007-03-20 17:37 ` adaworks
2007-03-21 8:07 ` Maciej Sobczak
2007-03-21 13:39 ` Martin Krischik
2007-03-22 7:54 ` Maciej Sobczak
2007-03-21 14:10 ` Dmitry A. Kazakov
2007-03-21 17:57 ` adaworks
2007-03-21 18:48 ` adaworks
2007-03-21 18:39 ` Georg Bauhaus
2007-03-21 20:09 ` Dmitry A. Kazakov
2007-03-21 20:25 ` Use of declare blocks Randy Brukardt
2007-03-21 20:36 ` Gautier
2007-03-21 20:37 ` Gautier
2007-03-21 20:43 ` Niklas Holsti
2007-03-21 21:29 ` Randy Brukardt
2007-03-22 1:17 ` Adam Beneschan
2007-03-22 8:34 ` Dmitry A. Kazakov
2007-03-22 1:06 ` Adam Beneschan
2007-03-22 17:59 ` adaworks
2007-03-23 2:35 ` Randy Brukardt
2007-03-23 5:23 ` adaworks
2007-03-23 5:15 ` Randy Brukardt
2007-03-23 10:20 ` Georg Bauhaus
2007-03-23 18:25 ` commenting, was " tmoran
2007-03-24 0:32 ` adaworks
2007-03-24 2:12 ` tmoran
2007-03-24 3:19 ` Randy Brukardt
2007-03-24 7:36 ` tmoran
2007-03-24 15:35 ` Simon Wright
2007-03-21 13:29 ` why learn C? Alexander E. Kopilovich
2007-03-30 0:51 ` kevin cline
2007-03-30 4:09 ` Steve
2007-03-30 4:58 ` kevin cline
2007-03-30 7:44 ` Lutz Donnerhacke
2007-03-30 9:09 ` Dmitry A. Kazakov
2007-04-02 4:29 ` kevin cline
2007-04-02 6:45 ` adaworks
2007-04-02 7:52 ` Dmitry A. Kazakov
2007-04-02 8:19 ` kevin cline
2007-04-02 12:04 ` Dmitry A. Kazakov
2007-04-02 23:37 ` Randy Brukardt
2007-04-03 12:42 ` Erasing inappropriate operations (was: why learn C?) Ludovic Brenta
2007-04-03 23:44 ` Randy Brukardt
2007-04-04 8:34 ` Erasing inappropriate operations Ludovic Brenta
2007-04-04 22:00 ` Randy Brukardt
2007-04-03 0:16 ` why learn C? Markus E Leypold
2007-04-04 16:14 ` jayessay
2007-04-05 7:14 ` Hyman Rosen
2007-04-05 15:35 ` jayessay
2007-04-06 2:02 ` Hyman Rosen
2007-04-06 5:57 ` Ray Blaak
2007-04-06 11:01 ` Markus E Leypold
2007-04-07 23:00 ` Ray Blaak
2007-04-08 19:41 ` jayessay
2007-04-09 14:08 ` Markus E Leypold
2007-04-10 15:48 ` jayessay
2007-04-08 19:44 ` jayessay
2007-04-06 18:05 ` jayessay
2007-04-06 22:00 ` Hyman Rosen
2007-04-06 23:46 ` jayessay
2007-04-06 23:59 ` jayessay
2007-04-06 22:16 ` Hyman Rosen
2007-04-06 23:52 ` jayessay
2007-04-07 0:39 ` Ray Blaak
2007-04-06 17:52 ` jayessay
2007-03-30 8:29 ` Markus E Leypold
2007-03-30 8:35 ` Markus E Leypold
2007-03-30 17:39 ` adaworks
2007-03-31 14:59 ` Steve
2007-03-31 15:59 ` Markus E Leypold
2007-04-01 14:32 ` Ed Falis
2007-04-02 7:03 ` adaworks
2007-03-31 15:14 ` Pascal Obry
2007-04-02 5:27 ` kevin cline
2007-04-02 6:04 ` Harald Korneliussen
2007-04-02 6:33 ` Shortage on C / C++ experts Martin Krischik
2007-04-02 7:07 ` why learn C? adaworks
2007-04-02 7:18 ` kevin cline
2007-04-02 13:00 ` adaworks
2007-04-12 15:28 ` Hyman Rosen
2007-04-12 18:32 ` Robert A Duff
2007-04-13 15:59 ` Hyman Rosen
2007-04-14 22:20 ` Robert A Duff
2007-04-14 22:46 ` Randy Brukardt
2007-04-22 18:53 ` adaworks
2007-04-22 19:50 ` Gautier
2007-04-03 0:26 ` Markus E Leypold
2007-04-03 0:34 ` Markus E Leypold
2007-04-03 2:22 ` jimmaureenrogers
2007-04-12 15:47 ` Hyman Rosen
2007-04-12 16:18 ` Markus E Leypold
2007-04-13 23:18 ` kevin cline
2007-04-14 9:38 ` Georg Bauhaus
2007-04-14 10:57 ` Markus E Leypold
2007-04-15 15:10 ` Simon Wright
2007-04-15 16:05 ` Markus E Leypold
2007-04-15 0:59 ` Hyman Rosen
2007-04-15 15:28 ` Markus E Leypold
2007-04-12 16:39 ` Dmitry A. Kazakov
2007-04-12 20:54 ` Georg Bauhaus
2007-04-12 20:33 ` Dmitry A. Kazakov
2007-04-12 21:40 ` Georg Bauhaus
2007-04-12 20:50 ` Dmitry A. Kazakov
2007-04-13 0:32 ` Markus E Leypold
2007-04-14 22:27 ` Robert A Duff
2007-04-14 1:20 ` jimmaureenrogers
2007-04-02 5:03 ` Brian May
2007-04-02 6:16 ` kevin cline
2007-04-03 0:00 ` Brian May
2007-04-12 15:56 ` Hyman Rosen
2007-04-12 16:19 ` Markus E Leypold
2007-04-13 23:42 ` Georg Bauhaus
2007-04-03 0:13 ` Markus E Leypold
2007-04-02 11:47 ` Shortage on C / C++ experts Larry Kilgallen
2007-04-02 12:01 ` Ludovic Brenta
2007-04-02 12:15 ` Dmitry A. Kazakov
2007-04-02 18:47 ` Alexander E. Kopilovich
2007-04-02 20:43 ` tmoran
2007-03-30 4:52 ` why learn C? jimmaureenrogers
2007-03-30 6:30 ` Case Crab
2007-03-30 6:37 ` Gautier
2007-03-30 9:17 ` Georg Bauhaus
2007-03-31 13:18 ` Peter C. Chapin
2007-04-01 1:23 ` Georg Bauhaus
2007-04-01 11:59 ` Peter C. Chapin
2007-04-02 6:37 ` kevin cline
2007-04-02 9:39 ` Harald Korneliussen
2007-03-30 17:47 ` adaworks
2007-03-30 19:25 ` Markus E Leypold
2007-03-30 20:29 ` Randy Brukardt
2007-03-31 9:52 ` Dmitry A. Kazakov
2007-04-01 1:35 ` adaworks
2007-03-31 2:41 ` jimmaureenrogers
2007-03-31 12:25 ` not NASA Ada coding standard Stephen Leake
2007-03-31 15:44 ` Markus E Leypold
2007-04-01 16:22 ` Simon Clubley
2007-04-02 10:08 ` Stephen Leake
2007-04-02 7:43 ` why learn C? kevin cline
2007-04-02 8:45 ` Martin Krischik
2007-04-02 10:54 ` Georg Bauhaus
2007-04-12 16:05 ` Hyman Rosen
2007-04-12 16:48 ` Dmitry A. Kazakov
2007-04-12 18:27 ` Robert A Duff
2007-04-13 16:21 ` Hyman Rosen
2007-04-12 21:11 ` Georg Bauhaus
2007-04-13 15:45 ` Hyman Rosen
2007-04-02 8:13 ` kevin cline
2007-04-02 23:54 ` Randy Brukardt
2007-04-03 2:58 ` jimmaureenrogers [this message]
2007-04-12 16:24 ` Hyman Rosen
2007-04-12 18:05 ` Markus E Leypold
2007-04-15 0:55 ` Hyman Rosen
2007-04-15 7:55 ` Dmitry A. Kazakov
2007-04-15 15:25 ` Markus E Leypold
2007-03-31 11:40 ` Larry Kilgallen
[not found] ` <1175236212.771445.135460@y66g2Organization: LJK Software <c82IfUV$xbi8@eisner.encompasserve.org>
2007-03-31 18:56 ` adaworks
2007-03-31 20:10 ` Markus E Leypold
2007-04-01 18:13 ` tmoran
2007-03-31 19:33 ` Cesar Rabak
2007-03-31 20:11 ` Markus E Leypold
2007-03-30 8:16 ` Markus E Leypold
2007-03-30 9:10 ` Georg Bauhaus
2007-03-30 19:16 ` Pascal Obry
2007-04-01 11:41 ` Martin Krischik
2007-04-01 17:03 ` Pascal Obry
2007-04-01 18:13 ` tmoran
2007-04-16 2:09 ` Brian May
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