Returns the number of seconds since the interval timer started.
A real, the number of seconds since the last TIC command.
sprintf("FFT execution time %g seconds", b);
prints the approximate time required to calculate and display the FFT of W1.
W1: gnorm(1024*32, 1)
W2 is labeled with the approximate time to calculate the FFT of W1.
TOC returns the elapsed time since the last TIC command to a precision of approximately 0.01 seconds. The interval timer is not reset.