time.h in arduino

Hi all, I want to calculate a time interval. If I consider the communication betweenco mputer and board, it's normal that it takes much time. So what i am doing is simply measuring the time in C code and print the result back, not measuring the time on my PC. So i included time.h But arduino0018 does not include time.h does anybody know , how i can use C time.h in arduino. Thanks in advance. --Arpan

Are you looking for the one in arduino-0018/libraries/Time?

No,actually i was looking for the C Header file. But i got to know, "The functionality in time.h deals with functions of the operating system that the code is running on. An AVR has no operating system. " so i can't use time.h in my avr-gcc code. But i used micros() in my code before and after the call of the function. Will it give me true time of execution, or it involves any communication time also. Also Groove, Please have a look at my post http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1275488191 Thanks

No,actually i was looking for the C Header file

arduino-0018/libraries/Time/Time.h ?

Please have a look at my post http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1275488191

I don't see what that's got to do with time functions

I downloaded latest Arduino environment from http://arduino.cc/en/Main/Software and it has not "Time" in arduino-0018/libraries/ --Arpan