Re: Nanoseconds precision

[Steve Graegert <graegerts@gmail.com>]

On 8/25/05, Ronaldo.Afonso@cyclades.com <Ronaldo.Afonso@cyclades.com> wrote:
> 
> All the functions in the libc do not show me nanosecond's precision. What
> they do is get a microsecond number and multiply it by 1000. So, I realized
> that it has to be that way because it's impossible to get a nanosecond's
> precison on a machine with a 2Ghz clock. The system needs more than a
> nanosecond to execute an instruction, so any nanosecond's precision, at
> leas on a 2Ghz machine, should be inaccurate. I'm just sharing what I've
> found.
> 
> Anyway, I'd like to thank everyone who helped me with this question.

#include <time.h>
int clock_gettime(clockid_t clock_id, struct timespec *tp);

timespec.nv_nsec provides nanosecond resolution.  Use CLOCK_REALTIME
for clock_id.

Regards

	\Steve

--

Steve Graegert <graegerts@gmail.com>
Software Consultancy {C/C++ && Java && .NET}
Mobile: +49 (176)  21248869
Office: +49 (9131) 7126409