MATLAB Function Reference

etime

Elapsed time

Syntax

• e = etime(t2,t1)
  

Description

e = etime(t2,t1) returns the time in 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]
  

Examples

Calculate how long a 2048-point real FFT takes.

• x = rand(2048,1);
  t = clock; fft(x); etime(clock,t)
  ans =
        0.4167
  

Limitations

As currently implemented, the etime function fails across month and year boundaries. Since etime is an M-file, you can modify the code to work across these boundaries if needed.

See Also

clock, cputime, tic, toc

errordlg

etree