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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. _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?45932> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
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