suifft

seismic software,very useful

SUIFFT - fft complex frequency traces to real time traces
suiftt <stdin >sdout sign=-1
Required parameters:
	none
Optional parameter:
	sign=-1		sign in exponent of inverse fft
Output traces are normalized by 1/N where N is the fft size.
Note: sufft | suifft is not quite a no-op since the trace
	length will usually be longer due to fft padding.