How to access system time finer than 1 second on the iPhone

Question

The system time function time(0) gives me a resolution of 1 second, right?

Is there a finer-grained function?

I'm using it to determine the time interval between two events.

A line of code would help me greatly. It makes it easier to have something concrete to hang the concept on when I look in the official documentation.

Answer 1

See CFAbsoluteTimeGetCurrent:

CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();
// do something you want to measure
CFAbsoluteTime end = CFAbsoluteTimeGetCurrent();
NSLog(@"operation took %2.5f seconds", end-start);

Should you find CFAbsouteTime too verbose, you can simply use double instead.