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| From: | Marco Caliari |
| Subject: | [Octave-bug-tracker] [bug #45932] ifft(fft(x)) is not real for x real |
| Date: | Thu, 20 Sep 2018 02:35:36 -0400 (EDT) |
| User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0 |
Follow-up Comment #6, bug #45932 (project octave):
@Mike: I'm pretty sure that FFTW has a special method for conjugate symmetric
input. And such a method is of course faster than the normal one. The
'symmetric' option is used by Matlab to force that special method in case the
input is not exactly conjugate symmetric because of rounding errors. It is not
an option that simply removes the imaginary parts from the output. Even if it
could be implemented as such in octave.
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