Re: Problems with FFT and IFFT

[John W. Eaton]

On 28-Feb-2006, Keith Goodman wrote:

| Here's what I get (no imaginary part; I get the same result in 2.1.72):
| 
| $ octave
| Octave 2.9.4 Forge 20050613
| >> fs = 0:0.1:10;
| >> x = sin(2*pi*fs);
| >> real(x)

What kind of hardware?  I see imaginary parts, but all less than eps.
Perhaps due to extra internal precision of amd64/x86 floating point
hardware?  Also, I am using fftw, are you?  Try

   octave_config_info ("FFTW_LIBS")

to see.

In any case, while it might be nice to understand where the
differences are coming from, I don't think this is a bug.

jwe



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