Timing a function

[Greg Zaverucha <gzaveruc@cs.uwaterloo.ca>]

Hi,

In a Pari script, I would like to record the time taken by a user defined 
function and write it to a file.

For example, if I could use the "##" metacommand in a 
script,

for(i = 1, 1000,
	myfunction(i);
	time = ##;
	write("times.log", i, "  ", time);
);


In other programming languages I've done things like

for( i = 1, 1000,
	start = gettime();
	myfunction(i);
	end = gettime();
	write("times.log", i, " ", end - start);
);

I would like to plot the time required by myfunction() for varying inputs.
Does anyone have any suggestions on how I can do this with Pari ?

Thanks
Greg