ETIME(T1,T0) returns the time in seconds that has elapsed between
vectors T1 and T0. The two vectors must be six elements long, in
the format returned by CLOCK :
T = [Year Month Day Hour Minute Second]
Here's an example of using ETIME to time an operation:
t0 = clock;
Caution: As currently implemented, it won't work across month or year
boundaries. It is an M-file, so it can be fixed if you require this.
See also TIC , TOC , CLOCK , CPUTIME .