Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: A data type for a wider integer than the compiler supports |
| Date | 2014-12-18 10:12 -0800 |
| Organization | None to speak of |
| Message-ID | <lnoar0ddyj.fsf@nuthaus.mib.org> (permalink) |
| References | <m6rkel$t8k$1@dont-email.me> <pan.2014.12.18.10.27.22.683000@nowhere.invalid> |
Nobody <nobody@nowhere.invalid> writes:
> On Wed, 17 Dec 2014 10:04:25 +0000, James Harris wrote:
>> But what options are there for defining ui64 when using the 16-bit compiler
>> (when 32-bit ints are the widest it supports, and when it cannot pass
>> structs to and from functions)?
>
> In C, function parameters and return values can be structs.
>
> If the compiler doesn't support that, it isn't a C compiler (and whatever
> language it's a compiler for is off-topic here).
For that matter, if a compiler doesn't support type a long long type
that's at least 64 bits wide, it's also not a C compiler (at least not
one conforming to the C99 or later standard).
Still, implementing 64-bit arithmetic using a language that doesn't
support native integers wider than 32 bits is interesting, and any
solutions are likely to scale to implementing 2*N-bit arithmetic using
only N-bit native integers. (By "native", I mean supported by the
compiler; operations might still be implemented via function calls.)
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-17 10:04 +0000
Re: A data type for a wider integer than the compiler supports Robert Wessel <robertwessel2@yahoo.com> - 2014-12-18 02:48 -0600
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-18 14:30 +0000
Re: A data type for a wider integer than the compiler supports bert <bert.hutchings@btinternet.com> - 2014-12-18 11:49 -0800
Re: A data type for a wider integer than the compiler supports Robert Wessel <robertwessel2@yahoo.com> - 2014-12-18 14:27 -0600
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2015-01-27 16:30 +0000
Re: A data type for a wider integer than the compiler supports Thomas Richter <thor@math.tu-berlin.de> - 2015-01-29 15:53 +0100
Re: A data type for a wider integer than the compiler supports Bartc <bc@freeuk.com> - 2015-01-29 17:33 +0000
Re: A data type for a wider integer than the compiler supports Richard Heathfield <invalid@see.sig.invalid> - 2015-01-29 17:52 +0000
Re: A data type for a wider integer than the compiler supports Bartc <bc@freeuk.com> - 2015-01-29 18:24 +0000
Re: A data type for a wider integer than the compiler supports Richard Heathfield <invalid@see.sig.invalid> - 2015-01-29 18:42 +0000
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2015-01-30 09:56 +0000
Re: A data type for a wider integer than the compiler supports Richard Heathfield <invalid@see.sig.invalid> - 2015-01-30 10:13 +0000
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2015-01-30 13:21 +0000
Re: A data type for a wider integer than the compiler supports Greg Martin <greg.at.softsprocket@dot.com> - 2015-01-30 14:16 +0000
Re: A data type for a wider integer than the compiler supports Thomas Richter <thor@math.tu-berlin.de> - 2015-02-01 08:54 +0100
Re: A data type for a wider integer than the compiler supports Richard Heathfield <invalid@see.sig.invalid> - 2015-01-30 10:17 +0000
Re: A data type for a wider integer than the compiler supports BartC <bc@freeuk.com> - 2014-12-18 10:13 +0000
Re: A data type for a wider integer than the compiler supports BartC <bc@freeuk.com> - 2014-12-18 12:34 +0000
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-18 15:06 +0000
Re: A data type for a wider integer than the compiler supports Nobody <nobody@nowhere.invalid> - 2014-12-18 10:27 +0000
Re: A data type for a wider integer than the compiler supports Robert Wessel <robertwessel2@yahoo.com> - 2014-12-18 04:44 -0600
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-18 15:21 +0000
Re: A data type for a wider integer than the compiler supports Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-18 20:33 +0000
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-22 16:25 +0000
Re: A data type for a wider integer than the compiler supports Robert Wessel <robertwessel2@yahoo.com> - 2014-12-22 14:38 -0600
Re: A data type for a wider integer than the compiler supports Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-22 21:14 +0000
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-23 02:42 +0000
Re: A data type for a wider integer than the compiler supports Robert Wessel <robertwessel2@yahoo.com> - 2014-12-22 22:52 -0600
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-23 11:00 +0000
Re: A data type for a wider integer than the compiler supports Les Cargill <lcargill99@comcast.com> - 2014-12-23 14:46 -0600
Re: A data type for a wider integer than the compiler supports Robert Wessel <robertwessel2@yahoo.com> - 2014-12-24 05:21 -0600
Re: A data type for a wider integer than the compiler supports David Brown <david.brown@hesbynett.no> - 2014-12-23 08:13 +0100
Re: A data type for a wider integer than the compiler supports Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-22 20:02 +0000
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-23 02:33 +0000
Re: A data type for a wider integer than the compiler supports Robert Wessel <robertwessel2@yahoo.com> - 2014-12-22 23:05 -0600
Re: A data type for a wider integer than the compiler supports Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-12-23 09:57 +0000
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-23 10:49 +0000
Re: A data type for a wider integer than the compiler supports Kaz Kylheku <kaz@kylheku.com> - 2014-12-22 21:18 +0000
Re: A data type for a wider integer than the compiler supports Keith Thompson <kst-u@mib.org> - 2014-12-18 10:12 -0800
Re: A data type for a wider integer than the compiler supports Vincenzo Mercuri <nomail@yahoo.it> - 2014-12-18 18:52 +0100
Re: A data type for a wider integer than the compiler supports "James Harris" <james.harris.1@gmail.com> - 2014-12-18 18:17 +0000
csiph-web