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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<TITLE>CLOCKTOTIME Convert Clock Vector to Epoch Time
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<H2>CLOCKTOTIME Convert Clock Vector to Epoch Time
</H2>
<P>
Section: <A HREF=sec_freemat.html> FreeMat Functions </A>
<H3>Usage</H3>
Given the output of the <code>clock</code> command, this function computes
the epoch time, i.e, the time in seconds since January 1,1970
at 00:00:00 UTC. This function is most useful for calculating elapsed
times using the clock, and should be accurate to less than a millisecond
(although the true accuracy depends on accuracy of the argument vector).
The usage for <code>clocktotime</code> is
<PRE>
y = clocktotime(x)
</PRE>
<P>
where <code>x</code> must be in the form of the output of <code>clock</code>, that is
<PRE>
x = [year month day hour minute seconds]
</PRE>
<P>
<H3>Example</H3>
Here is an example of using <code>clocktotime</code> to time a delay of 1 second
<PRE>
--> x = clock
x =
1.0e+03 *
2.0090 0.0100 0.0040 0.0220 0.0260 0.0322
--> sleep(1)
--> y = clock
y =
1.0e+03 *
2.0090 0.0100 0.0040 0.0220 0.0260 0.0332
--> clocktotime(y) - clocktotime(x)
ans =
1.0010
</PRE>
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