cputime() related question

Just a quick question

is there a difference between

t1 = cputitme();

t2 = cputime();

t = t2 - t1

and

t1 = cputtime();

t = cputime() - t1;

Both give different answers to me. In fact the second one is way faster for my program.

[John D'Errico]

There is no significant difference, except that you have spelled it three different ways, so it is unlikely the code you wrote actually works. ;)

But what do you mean by one of those calls is faster than the other? cputime does not measure time well enough to clearly be able to tell you such a short time interval. Even the slightest variation of something running on your computer in the background will be enough to blow that tiny difference out of the water.