etime - Time elapsed between date vectors
Syntax
e = etime(t2, t1)
Description
e = etime(t2, t1) returns
the number of seconds between vectors t1 and t2.
The two vectors must be six elements long, in the format returned
by clock:
T = [Year Month Day Hour Minute Second]
Remarks
etime does not account for the following:
When timing the duration of an event, use the tic and toc functions
instead of clock and etime. clock uses
the system time, which might be adjusted periodically by the operating
system and thus might not be reliable in time comparison operations.
Examples
This example shows two ways to calculate how long a particular
FFT operation takes. Using tic and toc is
preferred, as it can be more reliable for timing the duration of an
event:
x = rand(800000, 1);
t1 = tic; fft(x); toc(t1) % Recommended
Elapsed time is 0.097665 seconds.
t = clock; fft(x); etime(clock, t)
ans =
0.1250
See Also
tic, toc, cputime, clock, now
 | errordlg | | etree |  |
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