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| From | James Kuyper <jameskuyper@verizon.net> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: should c be a subset of c++? |
| Date | 2015-11-06 20:51 -0500 |
| Organization | Self |
| Message-ID | <563D5931.8000702@verizon.net> (permalink) |
| References | (17 earlier) <871teciq1o.fsf@bsb.me.uk> <57e3fd44-5ddc-4120-a516-9378ed727862@googlegroups.com> <87egibhe03.fsf@bsb.me.uk> <MPG.30a7098daf4af2fc989c27@news.eternal-september.org> <87twoytxs2.fsf@bsb.me.uk> |
On 11/06/2015 08:15 PM, Ben Bacarisse wrote: > "J. Clarke" <j.clarke.873638@gmail.com> writes: > >> In article <87egibhe03.fsf@bsb.me.uk>, ben.usenet@bsb.me.uk says... >>> >>> "Rick C. Hodgin" <rick.c.hodgin@gmail.com> writes: > <snip> >>>> They are not their conceptual >>>> representations of those real-world values, such as pi. In order to >>>> use pi in the real world, as applied to something physical, it has to >>>> be translated from the concept of pi in a formula, which has an unending >>>> sequence of decimals, and approximated to a numerical value that is >>>> terminating at whatever resolution is required or possible. >>> >>> And yet there are calculations involving pi, ones that produce numerical >>> results that an engineer can use, that don't need pi to be approximated. >> >> Could you given an example of such a calculation that does not cancel pi >> in some manner? > > I'm not sure I know what you mean by cancel but I suspect the answer is > no, I can't. All I can do (and I could swear I did in the original > thread) is support what I said. I recall an example of an integral with > an exact answer. That is an example of what I mean, even though it's > probably not an example of what you want. By "cancel", he means that the fact that the number can be calculated without relying upon the value of pi is because the calculation involves, for instance, multiplying by pi during one step, and then later dividing by it. By rearranging the calculations, 'pi' drops out, rendering it's numerical value irrelevant. Such a calculation does not meaningfully involve pi, though it can be organized in a way that it appears to. I don't really see how a calculation that meaningfully involves pi can be reduced to an actual numerical value without using an approximation to pi. I want to be clear about the fact that I am not in any way endorsing Rick Hodgin's mathematical nonsense - I'm just curious about a claim made about the necessity (or lack thereof) of approximating pi. >>> pointing it out. You can borrow Malcolm's phrase and say "ah, but only >>> when pi cancels out" if that makes you feel better about it. >> >> People would be more inclined to "agree with that simple fact" if you >> supported it with evidence. > > I did, didn't I? I used Google Groups to review previous messages in this thread. I didn't notice any specific examples of such a calculation. I might not have looked in the right place. Could you repeat the example, or at least provide a link to it?
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Re: should c be a subset of c++? "J. Clarke" <j.clarke.873638@gmail.com> - 2015-11-06 19:02 -0500
Re: should c be a subset of c++? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-07 01:15 +0000
Re: should c be a subset of c++? James Kuyper <jameskuyper@verizon.net> - 2015-11-06 20:51 -0500
Re: should c be a subset of c++? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-07 03:07 +0000
Re: should c be a subset of c++? James Kuyper <jameskuyper@verizon.net> - 2015-11-06 23:45 -0500
Re: should c be a subset of c++? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-07 06:39 +0000
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-07 00:45 -0800
Re: should c be a subset of c++? supercat@casperkitty.com - 2015-11-07 16:37 -0800
Re: should c be a subset of c++? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-11-07 16:45 -0800
Re: should c be a subset of c++? supercat@casperkitty.com - 2015-11-08 08:14 -0800
Re: should c be a subset of c++? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-11-08 09:42 -0800
Re: should c be a subset of c++? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-08 21:43 +0000
Re: should c be a subset of c++? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-11-08 13:53 -0800
Re: should c be a subset of c++? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-11-08 13:56 -0800
Re: should c be a subset of c++? supercat@casperkitty.com - 2015-11-08 14:27 -0800
Re: should c be a subset of c++? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-08 21:56 +0000
Re: should c be a subset of c++? David Brown <david.brown@hesbynett.no> - 2015-11-08 23:05 +0100
Re: should c be a subset of c++? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-11-08 14:20 -0800
Re: should c be a subset of c++? David Brown <david.brown@hesbynett.no> - 2015-11-09 10:10 +0100
Re: should c be a subset of c++? Geoff <geoff@invalid.invalid> - 2015-11-13 14:25 -0800
Re: should c be a subset of c++? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-13 17:32 -0500
Re: should c be a subset of c++? Geoff <geoff@invalid.invalid> - 2015-11-13 15:38 -0800
Re: should c be a subset of c++? raltbos@xs4all.nl (Richard Bos) - 2015-11-10 17:01 +0000
Re: should c be a subset of c++? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-10 17:15 +0000
Re: should c be a subset of c++? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-08 17:47 -0500
Re: should c be a subset of c++? David Brown <david.brown@hesbynett.no> - 2015-11-08 23:04 +0100
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 14:22 -0800
Re: should c be a subset of c++? supercat@casperkitty.com - 2015-11-08 14:31 -0800
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 14:38 -0800
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-08 19:50 -0500
Re: should c be a subset of c++? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 01:36 +0000
Re: should c be a subset of c++? David Brown <david.brown@hesbynett.no> - 2015-11-09 12:33 +0100
Re: should c be a subset of c++? raltbos@xs4all.nl (Richard Bos) - 2015-11-10 17:03 +0000
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-08 19:24 -0500
Re: should c be a subset of c++? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 01:16 +0000
Re: should c be a subset of c++? raltbos@xs4all.nl (Richard Bos) - 2015-11-10 17:06 +0000
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-08 14:55 -0500
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 12:03 -0800
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-08 20:01 -0500
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 02:31 -0800
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-09 08:19 -0500
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 08:47 -0800
Re: should c be a subset of c++? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-09 22:45 +0000
Re: should c be a subset of c++? Keith Thompson <kst-u@mib.org> - 2015-11-09 14:56 -0800
Re: should c be a subset of c++? supercat@casperkitty.com - 2015-11-09 15:24 -0800
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 15:56 -0800
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-09 21:54 -0500
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 19:07 -0800
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-10 08:37 -0500
Re: should c be a subset of c++? raltbos@xs4all.nl (Richard Bos) - 2015-11-10 17:07 +0000
Re: should c be a subset of c++? supercat@casperkitty.com - 2015-11-08 12:35 -0800
Re: should c be a subset of c++? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 13:02 -0800
Re: should c be a subset of c++? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-08 21:40 +0000
Trig functions and radians supercat@casperkitty.com - 2015-11-08 13:54 -0800
Re: should c be a subset of c++? Geoff <geoff@invalid.invalid> - 2015-11-13 14:18 -0800
Re: should c be a subset of c++? supercat@casperkitty.com - 2015-11-13 14:55 -0800
Re: should c be a subset of c++? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-08 01:02 +0000
Re: should c be a subset of c++? Richard Damon <Richard@Damon-Family.org> - 2015-11-07 20:39 -0500
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