Re: 2.0.34: clock() returns -1 after 248.5 days uptime

Hans-Joachim Baader (hans@grumbeer.inka.de)
Thu, 18 Feb 99 07:41 MET

In article <19990217174612.A14497@niksula.cs.hut.fi> you write:
>#include <time.h>
>#include <stdio.h>
>
>int main(int argc, char* argv[])
>{
> int i;
> int timer = clock();
> for (i = 1000000; i; i--);
> printf("timer: %i\nclock(): %i\nCLK_TCK: %i\n"
> "CLOCKS_PER_SEC: %i\n%3.2f 3.2f secs.\n",
> timer, clock(), CLK_TCK, CLOCKS_PER_SEC,
> (float)(clock() - timer) / (float)CLK_TCK / 10000.0,
> (float)(clock() - timer) / (float)CLOCKS_PER_SEC);
>
> return 1;
>}

Your program is incorrect. clock() returns clock_t, not int. clock_t
is long in glibc 2.1, so on a 32 bit architecture this would help
nothing...

Certainly a result of -1 is less than useful. But perhaps it conforms
to some standard ;-| Since clock() is a libc function you should ask the
libc maintainers about it.

hjb

-- 
"Every use of Linux is a proper use of Linux."
				-- John "Maddog" Hall, Keynote at the Linux
				   Kongress in Cologne


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