[TriLUG] clock() from time.h

[Warren Myers]

how about using time() - it returns the number of seconds elapsed since
00:00 hours, Jan 1, 1970 UTC from the system clock.

http://www.cplusplus.com/ref/ctime/time.html

Warren

On 5/18/06, Randall Barlow <randall_barlow at ncsu.edu> wrote:
>
> Rodney Radford wrote:
> > The man page states that clock "returns an approximation of processor
> time used by the program", which matches what you are getting under Linux.
> However, this link, http://www.cygwin.com/ml/cygwin/2003-10/msg01086.html,
> implies that under a Windows box clock actually returns the sum of the
> user-used-time and the system-used-time - ie: wall clock time. Now that
> doesn't answer your question of 'why', but does agree with what you are
> seeing.  Perhaps the issue is that Windows doesn't differentiate between
> windows and user time, or any time per process.
> >
> > Which did you want to see - system time or wall-clock time as perhaps
> there is a better solution than using clock().
> My intention was to see wall-clock time - do you know of something that
> will give me this in both windows and linux?  If not, do you know
> something that will under linux (and I can just use preprocessor
> directives to check whether I am in Linux or Windows at compile time...)
>
> Randy
>
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