>
>
>hi everyone,
>
>as a follow up to the previous posting regarding
>effects of measurment, I was testing gettimeofday().
>The results that i got out of my test program were not
>consistent and were varying. Wanted to get an opinion
>abt it.
>
> struct timeval before,after;
>
> gettimeofday(&before,NULL);
>
> for (i = 0; i < loop_value; i++);
>
> gettimeofday(&after,NULL);
>
> diff = 1000000 * (after.tv_sec - before.tv_sec);
> diff += after.tv_usec - before.tv_usec;
>
> fprintf(stderr,"the value of diff : %ld \n\n", diff);
>}
>
>
Well, try the following change,
things should improve:
diff = (1000000 * after.tv_sec + after.tv_usec)
- (1000000 * before.tv_sec + before.tv_usec);
Rishi.
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