6.5.0 docs:
http://www.qnx.com/developers/docs/6.5.0/topic/com.qnx.doc.neutrino_lib_ref/c/clock.html <http://www.qnx.com/developers/
docs/6.5.0/topic/com.qnx.doc.neutrino_lib_ref/c/clock.html>; 
 
"Return the number of clock ticks used by the program"

note also:
"
In a multithreaded program, clock() returns the time used by all threads in the application; clock() returns the time 
since the program started, not the time since a specific thread started. 
"
 
It may well be that you want to use ClockCycles(), as Elena suggested.
 
As for accuracy, I believe it should be accurate, yes. Is there something that makes you think it is not ?
 
For a 2nd opinion, consider using an instrumented kernel, and capture a system trace (kev file) and examine it to verify
 the timings. Or, there's always the classic 'write to a GPIO' and capture the output on an oscilloscope.
 
Regards
 
Dave



_______________________________________________

General
http://community.qnx.com/sf/go/post72399 <http://community.qnx.com/sf/go/post72399>;