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| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: CLOCKS_PER_SEC |
| Date | 2016-10-13 08:57 -0700 |
| Organization | None to speak of |
| Message-ID | <lnr37kjl7y.fsf@kst-u.example.com> (permalink) |
| References | <nto3cm$ps$1@dont-email.me> |
BartC <bc@freeuk.com> writes:
> CLOCKS_PER_SEC determines how the result of the clock() function is
> interpreted.
>
> But it seems to be defined as macro in time.h.
>
> Any ideas on how to determine that value when calling clock() as foreign
> function from another language? I want to avoid OS-specific functions
> unless they are available on both Windows and Linux.
>
> (At the moment, CLOCKS_PER_SEC seems to be usually 1000 on Windows and
> 1000000 on Linux. I suppose I could detect abnormally large values of
> clock() and infer it that way, but I think there will be some overlap in
> the set of valid results.)
Write a C function that returns the value of the macro, and call that
function from the foreign language. Depending on your build system, you
can probably do this at configuration time rather than at run time.
--
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"
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CLOCKS_PER_SEC BartC <bc@freeuk.com> - 2016-10-13 14:49 +0100
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-13 08:57 -0700
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-13 09:07 -0700
Re: CLOCKS_PER_SEC BartC <bc@freeuk.com> - 2016-10-13 23:18 +0100
Re: CLOCKS_PER_SEC BartC <bc@freeuk.com> - 2016-10-13 23:30 +0100
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-13 16:27 -0700
Re: CLOCKS_PER_SEC raltbos@xs4all.nl (Richard Bos) - 2016-10-16 10:02 +0000
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-16 11:32 -0700
Re: CLOCKS_PER_SEC Lowell Gilbert <lgusenet@be-well.ilk.org> - 2016-10-13 12:19 -0400
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-13 11:29 -0700
Re: CLOCKS_PER_SEC Lowell Gilbert <lgusenet@be-well.ilk.org> - 2016-10-13 14:39 -0400
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-13 12:03 -0700
Re: CLOCKS_PER_SEC supercat@casperkitty.com - 2016-10-14 07:47 -0700
Re: CLOCKS_PER_SEC Anton Shepelev <anton.txt@g{oogle}mail.com> - 2016-10-14 16:21 +0300
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-14 08:41 -0700
Re: CLOCKS_PER_SEC Anton Shepelev <anton.txt@g{oogle}mail.com> - 2016-10-14 18:56 +0300
Re: CLOCKS_PER_SEC Barry Schwarz <schwarzb@dqel.com> - 2016-10-14 09:49 -0700
Re: CLOCKS_PER_SEC Keith Thompson <kst-u@mib.org> - 2016-10-14 11:14 -0700
Re: CLOCKS_PER_SEC supercat@casperkitty.com - 2016-10-14 11:32 -0700
Re: CLOCKS_PER_SEC Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-14 11:56 -0400
Re: CLOCKS_PER_SEC Anton Shepelev <anton.txt@g{oogle}mail.com> - 2016-10-14 19:53 +0300
Re: CLOCKS_PER_SEC supercat@casperkitty.com - 2016-10-14 09:57 -0700
Re: CLOCKS_PER_SEC BartC <bc@freeuk.com> - 2016-10-14 18:18 +0100
Re: CLOCKS_PER_SEC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-16 02:55 -0700
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