displaying time_t values

displaying time_t values

[fabio]

hello,

I would like to know how to display the full seconds and miliseconds 
transacurrent since 2 points in a program.

main()
{
    time_t t1_t2;
    (void)time(&t1);
    cpu_intensive_function();
    (void)time(&t2);
    printf("the full time spent in the process is:");
    // how should i display it ? ej: 51,56745 seconds ot 1024,04546 seconds

}

Thanks,

fabolo

Re: displaying time_t values

[Michael Iatrou]

When the date was Sunday 23 October 2005 02:27, fabio wrote:

> I would like to know how to display the full seconds and miliseconds
> transacurrent since 2 points in a program.

difftime(t2, t1)
But time won't give you msec resolution. 

-- 
 Michael Iatrou
 Electrical and Computer Engineering Dept.
 University of Patras, Greece

Re: displaying time_t values

[kaushal]

In case u find the function is over in shorer time,simply run the same
function in a loop for n times and later divide the total time by n.Hope
that was useful.
On Sat, 2005-10-22 at 17:27 -0600, fabio wrote:
> hello,
> 
> I would like to know how to display the full seconds and miliseconds 
> transacurrent since 2 points in a program.
> 
> main()
> {
>     time_t t1_t2;
>     (void)time(&t1);
>     cpu_intensive_function();
>     (void)time(&t2);
>     printf("the full time spent in the process is:");
>     // how should i display it ? ej: 51,56745 seconds ot 1024,04546 seconds
> 
> }
> 
> Thanks,
> 
> fabolo
> -
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Re: displaying time_t values

[Glynn Clements]

fabio wrote:

> I would like to know how to display the full seconds and miliseconds 
> transacurrent since 2 points in a program.
> 
> main()
> {
>     time_t t1_t2;
>     (void)time(&t1);
>     cpu_intensive_function();
>     (void)time(&t2);
>     printf("the full time spent in the process is:");
>     // how should i display it ? ej: 51,56745 seconds ot 1024,04546 seconds
> 
> }

time() only provides second resolution. You need to use gettimeofday()
to get better resolution.

-- 
Glynn Clements <glynn@gclements.plus.com>