NAME

Cfft - complex fft


DESCRIPTION

Complex fast fourier transform


SYNOPSIS

Cfft < in.h > out.h


INPUT PARAMETERS

sign - integer
      [1]: forward transform
      -1 : reverse transform (FDGP sign convention)
n1,n2,n3 - integer
       input cube dimensions (complex data).
       (n1 = 2*(ntime1/2+1) if in frequency domain)
esize - integer [8]


EXAMPLES

                Cfft < in.h sign=1 esize=8 > fft.h
                Compute complex forward fft of input dataset in.H
                Cfft < fft.h sign=-1 esize=8 > out.h
                Compute complex inverse fft of input dataset fft.H


SEE ALSO

the Ft3d manpage


CATEGORY

seis/filter