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Groups > comp.arch.embedded > #26254
| From | Les Cargill <lcargill99@comcast.com> |
|---|---|
| Newsgroups | comp.arch.embedded |
| Subject | Re: Dimension of a matrix |
| Date | 2017-03-25 13:12 -0500 |
| Organization | A noiseless patient Spider |
| Message-ID | <ob6bi3$a7o$1@dont-email.me> (permalink) |
| References | <rtKdndPJ5_gVyknFnZ2dnUU7-UfNnZ2d@giganews.com> <ob2kn7$vd$3@dont-email.me> |
David Brown wrote: > On 24/03/17 00:17, Tim Wescott wrote: >> I just put the following into yet another c/c++ file: >> >> #define DIM(x) (sizeof(x) / sizeof(*x)) >> >> It calculates the number of elements in the array x (assuming that x is, >> indeed an array). > > This is the common way to define such a macro. It does not work if you > pass arrays around, of course - they decay into pointers when you pass > them as function pointers (unless your array is wrapped in a struct). > I could not tell you which versions of which compilers support this, but in some toolchains, it's possible to specify the size of an array being passed - void p(char x[256])... . I may be thinking of compiling C code using a C++ compiler, or it may be in C99. I don't think it's in C89/ANSI. >> >> Is there anything in the standard libraries that does this easy and >> obvious thing? >> > -- Les Cargill
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Dimension of a matrix Tim Wescott <seemywebsite@myfooter.really> - 2017-03-23 18:17 -0500
Re: Dimension of a matrix Paul Rubin <no.email@nospam.invalid> - 2017-03-23 23:21 -0700
Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-24 09:18 +0100
Type-safety and C++, was: Re: Dimension of a matrix Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-24 18:24 +0000
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <tim@seemywebsite.com> - 2017-03-24 19:32 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix Stefan Reuther <stefan.news@arcor.de> - 2017-03-25 09:59 +0100
Re: Type-safety and C++, was: Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-25 13:08 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-25 01:57 +0100
Re: Type-safety and C++, was: Re: Dimension of a matrix Clifford Heath <no.spam@please.net> - 2017-03-25 18:34 +1100
Re: Type-safety and C++, was: Re: Dimension of a matrix Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-26 23:53 +0000
Re: Type-safety and C++, was: Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-27 09:51 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Clifford Heath <no.spam@please.net> - 2017-03-27 20:19 +1100
Re: Type-safety and C++, was: Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-27 12:17 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Paul Rubin <no.email@nospam.invalid> - 2017-03-25 09:20 -0700
Re: Type-safety and C++, was: Re: Dimension of a matrix George Neuner <gneuner2@comcast.net> - 2017-03-24 23:14 -0400
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <tim@seemywebsite.com> - 2017-03-25 11:07 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix George Neuner <gneuner2@comcast.net> - 2017-03-26 05:45 -0400
Re: Type-safety and C++, was: Re: Dimension of a matrix Wouter van Ooijen <wouter@voti.nl> - 2017-03-26 13:14 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Paul Rubin <no.email@nospam.invalid> - 2017-03-26 11:08 -0700
Re: Type-safety and C++, was: Re: Dimension of a matrix Wouter van Ooijen <wouter@voti.nl> - 2017-03-26 20:24 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <tim@seemywebsite.com> - 2017-03-26 15:16 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-27 00:09 +0000
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <seemywebsite@myfooter.really> - 2017-03-26 19:43 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-27 16:57 +0100
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <tim@seemywebsite.com> - 2017-03-27 11:53 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-27 22:04 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <seemywebsite@myfooter.really> - 2017-03-27 18:32 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix Clifford Heath <no.spam@please.net> - 2017-03-28 11:03 +1100
Re: Type-safety and C++, was: Re: Dimension of a matrix Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-27 22:07 +0100
Re: Type-safety and C++, was: Re: Dimension of a matrix Paul Rubin <no.email@nospam.invalid> - 2017-03-27 23:42 -0700
Re: Type-safety and C++, was: Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-28 09:22 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Paul Rubin <no.email@nospam.invalid> - 2017-03-28 00:42 -0700
Re: Type-safety and C++, was: Re: Dimension of a matrix Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-28 09:07 +0100
Re: Type-safety and C++, was: Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-28 19:34 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <tim@seemywebsite.com> - 2017-03-29 11:39 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-28 19:29 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-29 10:31 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-30 00:23 +0000
Re: Type-safety and C++, was: Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-29 19:31 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix Phil Martel <pomartel@comcast.net> - 2017-03-30 11:51 -0400
Re: Type-safety and C++, was: Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-30 19:16 -0500
Re: Type-safety and C++, was: Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-31 09:21 +0200
Re: Type-safety and C++, was: Re: Dimension of a matrix Tim Wescott <seemywebsite@myfooter.really> - 2017-03-28 14:19 -0500
Re: Dimension of a matrix Tim Wescott <tim@seemywebsite.com> - 2017-03-24 11:05 -0500
Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-24 17:33 +0100
Re: Dimension of a matrix Tim Wescott <tim@seemywebsite.com> - 2017-03-24 12:09 -0500
Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-25 13:09 -0500
Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-25 13:05 -0500
Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-24 09:20 +0100
Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-25 13:12 -0500
Re: Dimension of a matrix Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2017-03-25 20:08 +0100
Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-25 15:17 -0500
Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-26 17:32 +0200
Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-26 11:55 -0500
Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-26 21:23 +0200
Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-29 19:36 -0500
Re: Dimension of a matrix Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-30 00:36 +0000
Re: Dimension of a matrix Paul Rubin <no.email@nospam.invalid> - 2017-03-29 19:55 -0700
Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-30 09:49 +0200
Re: Dimension of a matrix Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-30 18:07 +0000
Re: Dimension of a matrix David Brown <david.brown@hesbynett.no> - 2017-03-30 09:47 +0200
Re: Dimension of a matrix Wouter van Ooijen <wouter@voti.nl> - 2017-03-25 19:08 +0100
Re: Dimension of a matrix Les Cargill <lcargill99@comcast.com> - 2017-03-25 15:21 -0500
Re: Dimension of a matrix Wouter van Ooijen <wouter@voti.nl> - 2017-03-26 14:43 +0200
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