Date: Thu, 02 Jan 2003 03:35:21 -0800 From: Lev Walkin <vlm@netli.com> To: Mario Sergio Fujikawa Ferreira <lioux@FreeBSD.org> Cc: FreeBSD-hackers@FreeBSD.org, Garrett Wollman <wollman@lcs.mit.edu> Subject: Re: Timing with clock_gettime(2) (sysutils/clockspeed port) Message-ID: <3E1423F9.6070007@netli.com> References: <20021223110426.2848.qmail@exxodus.fedaykin.here>
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Mario Sergio Fujikawa Ferreira wrote:
> #define timing_diffi(x,y) \
> ( \
> (double) ( ((x)->t.tv_sec - (y)->t.tv_sec) + \
> (double) ( \
> ((x)->t.tv_nsec - (double) (y)->t.tv_nsec) * 4294967296.0 / 1e9 \
> ) \
> ) \
> )
[skip]
> printf("Avg getpid() time = %lld nsec\n", timing_diffi(&end,&start)/iters);
Please, please read `man 3 printf`. Consider using %f instead of %lld.
--
Lev Walkin
vlm@netli.com
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