how can get the 'millisecond'

bigapple · 08-08-2005, 02:22 AM

hi ,all
I want to get the system's time ,and need millisecond level.so how can i do it.
as I know ,the function

Code:

int gettimeofday ( struct timeval * tv , struct timezone * tz )

will store the second and millisecond into the struct timeval.
tv->tv_sec; /*second*/
tv-> tv_usec; /*millisecond*/

but when I print the 'tv->tv_usec', i got a long number,it's not the millisecond now. So how I can convert the long number to a millisencond between 0-99
Or is there any other method can I get the millisecond.thank you for all your suggestion!

acid_kewpie · 08-08-2005, 02:43 AM

since when was a millisecond a number between 0 and 99??

anywho... usec is a microsecond, the top 3 significant digits are your microsecond, so divide it by 1000 and truncate it...

bigapple · 08-08-2005, 03:14 AM

I am sorry that I've make some mistake ,millisecond is between 0-999.
Since I know
microsecond = 1/1000000 second
millisecond = 1/1000 second
In a word ,I want got the two number following the second.we can see the string in some clock:

Code:

16:12:23.50

and we call them HOUR:MINUTE:SECOND.** ,but I don't know how can we call the last '50'.
I my porgram I just want to got the 50,,ok, do you understand me?

acid_kewpie · 08-08-2005, 07:37 AM

so liek i said, that should be most significant digits of the usec value. if you have 0.50 seconds that would be 500000 usec