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Groups > comp.lang.c > #58474

Re: What is "complexifying" C?

From Ian Collins <ian-news@hotmail.com>
Newsgroups comp.lang.c
Subject Re: What is "complexifying" C?
Date 2015-03-20 21:37 +1300
Message-ID <cn24hhF9khqU2@mid.individual.net> (permalink)
References (7 earlier) <W2COw.61025$uF6.16057@fx17.iad> <mefh8n$6b5$1@speranza.aioe.org> <%dIOw.34716$Xj5.11604@fx26.iad> <cn1tsaF9khqU1@mid.individual.net> <3dingapi21g9aj30pel30s2288h02r5c0g@4ax.com>

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Robert Wessel wrote:
> On Fri, 20 Mar 2015 19:43:21 +1300, Ian Collins <ian-news@hotmail.com>
> wrote:
>
>> Greg Martin wrote:
>>> On 2015-03-19, jacob navia <jacob@jacob.remcomp.fr> wrote:
>>>>
>>>> Look at what happened with complex numbers. There are MANY ways of doing
>>>> a complex division, if you care about speed, or accuracy or robustness,
>>>> or other criteria. With the language solution you
>>>>
>>>> 1) Complexify enormously ALL the C implementations that have to add that
>>>> feature.
>>>>
>>>> 2) You tie the user to its implementation decisions. He/she can't change
>>>> the way a complex division is done.
>>>>
>>>> Can you propose another solution?
>>>>
>>>
>>> You mean other then writing the code to do it? No.
>>>
>>> How does operator overloading remove the burden of writing the code? Or
>>> are you suggesting it's not possible for programmers to operate on
>>> complex numbers in C?
>>
>> His point was in a language with operating overloading (such as C++) you
>> don't have to change the core language in order to add new numeric
>> types, be they complex number of otherwise.
>>
>> The burden is removed from the language standard and implementation and
>> in the case of complex numbers, the user gets the flexibility of
>> choosing the underlying type and implementation.
>
>
> Although in the case of something like complex, I can't work up a lot
> of sympathy for the compiler implementers.  Or for that matter, adding
> bignum and decimal math.  Really, a few more data types in a language
> like C is just not a big deal.

Until you want to use one of those type for complex numbers...

> And there are really a pretty small set of things you're really want
> to overload on the numeric operators anyway.

That's true.  It's much more common in C++ to overload the function call 
or index operators.

> While operator overloading certainly has its uses, I'd judge that a
> basic implementation of classes would be far more useful in C, just
> for the encapsulation.  IMO, polymorphism ends up rather down the
> list, somewhere after inheritance.  But that's me.  Jacob obviously
> made a different judgment.

I agree again.  The one thing C++ can do that C can't is manage resource 
lifetime with constructors and destructors.  But then again, if you want 
C++, you know where to find it...

-- 
Ian Collins

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Thread

What is "complexifying"  C? jacob navia <jacob@spamsink.net> - 2015-03-16 22:55 +0100
  Re: What is "complexifying"  C? Bartc <bc@freeuk.com> - 2015-03-16 22:55 +0000
    Re: What is "complexifying"  C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-16 16:41 -0700
      Re: What is "complexifying"  C? Richard Heathfield <rjh@cpax.org.uk> - 2015-03-17 00:05 +0000
      Re: What is "complexifying"  C? Bartc <bc@freeuk.com> - 2015-03-17 01:12 +0000
      Re: What is "complexifying"  C? Tim Rentsch <txr@alumni.caltech.edu> - 2015-03-25 13:58 -0700
    Re: What is "complexifying"  C? jacob navia <jacob@spamsink.net> - 2015-03-17 07:16 +0100
      Re: What is "complexifying"  C? Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-17 13:50 +0000
        Re: What is "complexifying"  C? jacob navia <jacob@spamsink.net> - 2015-03-17 14:59 +0100
          Re: What is "complexifying" C? jacob navia <jacob@spamsink.net> - 2015-03-17 15:22 +0100
            Re: What is "complexifying" C? David Brown <david.brown@hesbynett.no> - 2015-03-17 16:16 +0100
          Re: What is "complexifying"  C? Kaz Kylheku <kaz@kylheku.com> - 2015-03-17 14:39 +0000
          Re: What is "complexifying"  C? Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-17 15:23 +0000
        Re: What is "complexifying"  C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-18 15:40 -0700
        Re: What is "complexifying"  C? Kaz Kylheku <kaz@kylheku.com> - 2015-03-18 22:49 +0000
          Re: What is "complexifying"  C? Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-19 13:55 +0000
            Re: What is "complexifying" C? Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-19 15:37 +0000
              Re: What is "complexifying" C? jacob navia <jacob@jacob.remcomp.fr> - 2015-03-19 23:06 +0100
                Re: What is "complexifying" C? Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-19 22:38 +0000
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-20 19:43 +1300
                Re: What is "complexifying" C? jacob navia <jacob@jacob.remcomp.fr> - 2015-03-20 07:49 +0100
                Re: What is "complexifying" C? Robert Wessel <robertwessel2@yahoo.com> - 2015-03-20 02:29 -0500
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-20 21:37 +1300
                Re: What is "complexifying" C? Robert Wessel <robertwessel2@yahoo.com> - 2015-03-20 03:40 -0500
                Re: What is "complexifying" C? David Brown <david.brown@hesbynett.no> - 2015-03-20 10:18 +0100
                Re: What is "complexifying" C? Robert Wessel <robertwessel2@yahoo.com> - 2015-03-21 00:19 -0500
                Re: What is "complexifying" C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-20 03:15 -0700
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-22 13:51 +1300
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-22 15:21 +1300
                Re: What is "complexifying" C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-22 00:57 -0700
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-22 22:28 +1300
                Re: What is "complexifying" C? fir <profesor.fir@gmail.com> - 2015-03-22 02:59 -0700
                Re: What is "complexifying" C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-22 11:16 -0700
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-23 07:25 +1300
                Re: What is "complexifying" C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-22 12:06 -0700
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-23 17:01 +1300
                Re: What is "complexifying" C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-23 03:09 -0700
                Re: What is "complexifying" C? fir <profesor.fir@gmail.com> - 2015-03-23 01:42 -0700
                Re: What is "complexifying" C? Melzzzzz <mel@zzzzz.com> - 2015-03-22 19:32 +0100
                Re: What is "complexifying" C? Robert Wessel <robertwessel2@yahoo.com> - 2015-03-22 17:34 -0500
                Re: What is "complexifying" C? Richard Damon <Richard@Damon-Family.org> - 2015-03-22 20:07 -0400
                Re: What is "complexifying" C? Robert Wessel <robertwessel2@yahoo.com> - 2015-03-23 00:00 -0500
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-23 18:04 +1300
                Re: What is "complexifying" C? Richard Damon <Richard@Damon-Family.org> - 2015-03-23 23:22 -0400
                Re: What is "complexifying" C? Richard Damon <Richard@Damon-Family.org> - 2015-03-22 14:54 -0400
                Re: What is "complexifying" C? Melzzzzz <mel@zzzzz.com> - 2015-03-23 00:35 +0100
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-23 17:06 +1300
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-23 17:25 +1300
                Re: What is "complexifying" C? Martin Shobe <martin.shobe@yahoo.com> - 2015-03-22 23:33 -0500
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-23 18:01 +1300
                Re: What is "complexifying" C? James Kuyper <jameskuyper@verizon.net> - 2015-03-23 09:41 -0400
                Re: What is "complexifying" C? James Kuyper <jameskuyper@verizon.net> - 2015-03-23 10:23 -0400
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-24 07:10 +1300
                Re: What is "complexifying" C? James Kuyper <jameskuyper@verizon.net> - 2015-03-23 14:57 -0400
                Re: What is "complexifying" C? David Brown <david.brown@hesbynett.no> - 2015-03-24 09:36 +0100
                Re: What is "complexifying" C? Richard Heathfield <rjh@cpax.org.uk> - 2015-03-24 08:42 +0000
                Re: What is "complexifying" C? David Brown <david.brown@hesbynett.no> - 2015-03-24 11:23 +0100
                Re: What is "complexifying" C? Richard Heathfield <rjh@cpax.org.uk> - 2015-03-24 10:52 +0000
                Re: What is "complexifying" C? raltbos@xs4all.nl (Richard Bos) - 2015-03-29 16:58 +0000
                Re: What is "complexifying" C? Melzzzzz <mel@zzzzz.com> - 2015-03-22 02:38 +0100
                Re: What is "complexifying" C? Richard Damon <Richard@Damon-Family.org> - 2015-03-22 09:11 -0400
                Re: What is "complexifying" C? Les Cargill <lcargill99@comcast.com> - 2015-03-20 06:30 -0500
                Re: What is "complexifying" C? Bartc <bc@freeuk.com> - 2015-03-20 10:31 +0000
                Re: What is "complexifying" C? Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-20 13:49 +0000
                Re: What is "complexifying" C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-20 09:23 -0700
                Re: What is "complexifying" C? Ian Collins <ian-news@hotmail.com> - 2015-03-21 08:28 +1300
                Re: What is "complexifying" C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-20 01:04 -0700
    Re: What is "complexifying"  C? Keith Thompson <kst-u@mib.org> - 2015-03-17 08:05 -0700
      Re: What is "complexifying"  C? jacob navia <jacob@spamsink.net> - 2015-03-17 16:08 +0100
        Re: What is "complexifying"  C? Keith Thompson <kst-u@mib.org> - 2015-03-17 11:09 -0700
          Re: What is "complexifying"  C? jacob navia <jacob@spamsink.net> - 2015-03-17 21:37 +0100
            Re: What is "complexifying"  C? Robert Wessel <robertwessel2@yahoo.com> - 2015-03-18 00:40 -0500
      Re: What is "complexifying"  C? Bartc <bc@freeuk.com> - 2015-03-17 15:34 +0000
    Re: What is "complexifying"  C? Bartc <bc@freeuk.com> - 2015-03-17 15:06 +0000
  Re: What is "complexifying" C? Melzzzzz <mel@zzzzz.com> - 2015-03-17 00:05 +0100
  Re: What is "complexifying" C? Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-16 23:20 +0000
  Re: What is "complexifying"  C? Ian Collins <ian-news@hotmail.com> - 2015-03-17 16:42 +1300
  Re: What is "complexifying"  C? Mark Storkamp <mstorkamp@yahoo.com> - 2015-03-17 08:59 -0500
    Re: What is "complexifying"  C? jacob navia <jacob@spamsink.net> - 2015-03-17 15:18 +0100
    Re: What is "complexifying"  C? Bartc <bc@freeuk.com> - 2015-03-17 14:41 +0000
      Re: What is "complexifying"  C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-18 15:47 -0700
        Re: What is "complexifying"  C? Bartc <bc@freeuk.com> - 2015-03-19 00:26 +0000
          Re: What is "complexifying"  C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-19 03:23 -0700
            Re: What is "complexifying"  C? Bartc <bc@freeuk.com> - 2015-03-19 11:19 +0000

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