Re: CLOCKS_PER_SEC not defined

Article View: comp.std.c

Article #4811

#4811

From: Jerry Coffin
Date: Fri, 16 Feb 1996 19:17

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ramin@twinkie.gsfc.nasa.gov (Ramin Sina) wrote:

>I am using a supposedly ansi c program in which I write

>#include <time.h>

>#if defined(__STDC__) && !defined(CLOCKS_PER_SEC)
>#error "CLOCKS_PER_SEC is not defined on this stupid compiler"
>#endif

>I get the error that CLOCKS_PER_SEC is not defined. I had thought that it
>was defined in standard C in the time.h header. I need CLOCKS_PER_SEC to
>time how long it takes for the program to run. Can anybody suggest how I can
>fix this problem.

You might check for CLK_TCK being defined instead.  Prior to the
standard, and even in early versions of the draft working paper for the
C standard, this was used instead of CLOCKS_PER_SEC.  If memory serves,
CLK_TCK is also defined in POSIX.

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Path: arc1-ca.pugleaf.net!news.rmii.com!usenet
From: jcoffin@rmii.com (Jerry Coffin)
Newsgroups: comp.std.c
Subject: Re: CLOCKS_PER_SEC not defined
Date: Fri, 16 Feb 1996 19:17:16 GMT
Organization: TAEUS
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