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| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: complex number in struct form in C |
| Date | 2014-12-21 22:21 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87oaqwod9a.fsf@bsb.me.uk> (permalink) |
| References | (3 earlier) <cfoc9cFtn8mU1@mid.individual.net> <m76uab$bi7$1@dont-email.me> <cfod3vFtubaU1@mid.individual.net> <f03e9ap9a4qac9er1qb2hi4dtb5nq00978@4ax.com> <cfol03F1jv3U1@mid.individual.net> |
"Osmium" <r124c4u102@comcast.net> writes: > "Barry Schwarz" wrote: > >> On Sun, 21 Dec 2014 11:08:16 -0600, "Osmium" <r124c4u102@comcast.net> >> wrote: >> >>>"James Kuyper" wrote: >>> >>>> On 12/21/2014 11:54 AM, Osmium wrote: >>>> ... >>>>> The convention in C, is for real numbers to be represented by double, >>>>> not >>>>> float. Look at the types of parameters and such in <math.h> >>>> >>>> Just about every function in <math.h> or <cmath.h> that has a 'double' >>>> argument or a 'double' return value has a corresponding function with >>>> 'f' at the end of the name that takes float arguments or returns float >>>> values, and another corresponding function with 'l' at the end that >>>> takes 'long double' arguments or returns a 'long double' value. I don't >>>> think you can justify the conclusion you're reaching from that evidence. >>> >>>If you want to say my conclusion is wrong, why don't you just say so? >> >> OK. How did you reach the conclusion that the convention in C is to >> use double when the language and standard library provides comparable >> facilities to use float, double, and long double? What parameter >> types in math.h support this? > > The most respected text for C is Ansi C, by K&R. The following is from the > section on <math.h> > > "In the following table, x and y are of type double, n is an > int and > all functions return double" > > *That* version of C has been around far longer than the current flavors. So > a 50 year old programmer naturally has written more programs than a 30 year > old programmer, same deal for a programming language. This might be an age/experience disagreement. If you ever used K&R C you will have to work hard to forget that float was very much a second-class type. In K&R C you can't write a float -- all floating point constants are of type double, and floats promote to double in expressions, so you can't, for example, add two floats. Neither can you pass a float to a function (in the usual sense of the term) so you can't print one either. <snip> -- Ben.
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complex number in struct form in C Dexterr <dejangru@gmail.com> - 2014-12-21 07:20 -0800
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-21 11:30 -0500
Re: complex number in struct form in C Dexterr <dejangru@gmail.com> - 2014-12-21 08:35 -0800
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-21 10:54 -0600
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-21 12:00 -0500
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-21 11:08 -0600
Re: complex number in struct form in C Barry Schwarz <schwarzb@dqel.com> - 2014-12-21 10:12 -0800
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-21 13:22 -0600
Re: complex number in struct form in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-21 22:21 +0000
Re: complex number in struct form in C asetofsymbols@gmail.com - 2014-12-26 11:34 -0800
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-26 14:10 -0600
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-28 07:04 +0000
Re: complex number in struct form in C BartC <bc@freeuk.com> - 2014-12-28 13:14 +0000
Re: complex number in struct form in C Robert Wessel <robertwessel2@yahoo.com> - 2014-12-28 10:45 -0600
Re: complex number in struct form in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-28 08:56 -0800
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-29 10:10 +0000
Re: complex number in struct form in C Kaz Kylheku <kaz@kylheku.com> - 2014-12-29 19:40 +0000
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-29 20:54 +0000
Re: complex number in struct form in C BartC <bc@freeuk.com> - 2014-12-29 21:55 +0000
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-30 03:07 +0000
Re: complex number in struct form in C BartC <bc@freeuk.com> - 2014-12-30 10:51 +0000
Re: complex number in struct form in C Rosario193 <Rosario@invalid.invalid> - 2014-12-30 12:15 +0100
Re: complex number in struct form in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-30 03:31 -0800
Re: complex number in struct form in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-30 12:17 +0000
Re: complex number in struct form in C BartC <bc@freeuk.com> - 2014-12-30 13:18 +0000
Re: complex number in struct form in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-30 05:28 -0800
Re: complex number in struct form in C BartC <bc@freeuk.com> - 2014-12-30 13:53 +0000
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-30 08:53 -0600
Re: complex number in struct form in C "Chris M. Thomasson" <no@spam.invalid> - 2014-12-30 20:05 -0800
Re: complex number in struct form in C Jeff Higgins <jeff@invalid.invalid> - 2014-12-30 17:40 -0500
Re: complex number in struct form in C Tim Rentsch <txr@alumni.caltech.edu> - 2015-03-24 08:58 -0700
Re: complex number in struct form in C Les Cargill <lcargill99@comcast.com> - 2015-03-24 19:41 -0500
Re: complex number in struct form in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-30 14:59 +0000
Re: complex number in struct form in C David Thompson <dave.thompson2@verizon.net> - 2015-01-12 15:33 -0500
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-01-12 22:51 +0000
Re: complex number in struct form in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-01-12 23:34 +0000
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-26 15:25 -0500
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-28 07:17 +0000
Re: complex number in struct form in C BartC <bc@freeuk.com> - 2014-12-26 20:49 +0000
Re: complex number in struct form in C asetofsymbols@gmail.com - 2014-12-27 00:22 -0800
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-27 08:25 -0600
Re: complex number in struct form in C Geoff <geoff@invalid.invalid> - 2014-12-27 10:20 -0800
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-27 13:21 -0600
Re: complex number in struct form in C Geoff <geoff@invalid.invalid> - 2014-12-27 13:11 -0800
Re: complex number in struct form in C "Osmium" <r124c4u102@comcast.net> - 2014-12-27 15:36 -0600
Re: complex number in struct form in C Geoff <geoff@invalid.invalid> - 2014-12-27 14:54 -0800
Re: complex number in struct form in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-27 15:45 -0800
Re: complex number in struct form in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-27 13:40 -0800
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-28 06:50 -0500
Re: complex number in struct form in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-28 04:25 -0800
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-28 06:44 -0500
Re: complex number in struct form in C Richard Damon <Richard@Damon-Family.org> - 2014-12-28 08:33 -0500
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-27 11:46 -0500
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-28 07:28 +0000
Re: complex number in struct form in C Kaz Kylheku <kaz@kylheku.com> - 2014-12-27 17:23 +0000
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-21 14:37 -0500
Re: complex number in struct form in C Keith Thompson <kst-u@mib.org> - 2014-12-21 12:37 -0800
Re: complex number in struct form in C glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-22 00:54 +0000
Re: complex number in struct form in C James Kuyper <jameskuyper@verizon.net> - 2014-12-21 11:54 -0500
Re: complex number in struct form in C Vincenzo Mercuri <nomail@yahoo.it> - 2014-12-21 18:07 +0100
Re: complex number in struct form in C Dexterr <dejangru@gmail.com> - 2014-12-21 10:37 -0800
Re: complex number in struct form in C "Chris M. Thomasson" <no@spam.invalid> - 2014-12-21 10:55 -0800
Re: complex number in struct form in C raltbos@xs4all.nl (Richard Bos) - 2014-12-22 12:15 +0000
Re: complex number in struct form in C Dexterr <dejangru@gmail.com> - 2014-12-22 05:51 -0800
Re: complex number in struct form in C BartC <bc@freeuk.com> - 2014-12-22 14:01 +0000
Re: complex number in struct form in C Keith Thompson <kst-u@mib.org> - 2014-12-22 08:02 -0800
Re: complex number in struct form in C Keith Thompson <kst-u@mib.org> - 2014-12-22 08:03 -0800
Re: complex number in struct form in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-21 22:27 +0000
Re: complex number in struct form in C "Chris M. Thomasson" <no@spam.invalid> - 2014-12-21 10:51 -0800
Re: complex number in struct form in C Dexterr <dejangru@gmail.com> - 2014-12-21 11:14 -0800
Re: complex number in struct form in C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-21 17:17 -0800
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