Jim Crotinger jac@gandalf.llnl.gov
Tue, 10 Jun 1997 07:40:25 -0700

Rob Hooft writes:
 >    real_fft        : real input --> complex output, Fourier transform
 >    inverse_real_fft: real input --> complex output, inverse Fourier transform

Surely not. The latter is just the complex conjugate of the former -
we don't need a seperate function to compute it.  Since "real fft"s
usually pack the amplitude of the highest mode (which is phaseless)
into the same complex number as the amplitude of the 0 mode, it is
useful to have an inverse (I haven't tried the Python one - I'm just
assuming that this is the way that it works).


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