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[Octave-bug-tracker] [bug #45932] ifft(fft(x)) is not real for x real

From: Avinoam Kalma
Subject: [Octave-bug-tracker] [bug #45932] ifft(fft(x)) is not real for x real
Date: Wed, 24 Jan 2018 13:11:12 -0500 (EST)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36 
Follow-up Comment #2, bug #45932 (project octave):

We can check if max(abs(imag()) is smaller then K*eps, and zero imag() if the
answer is yes.
But how can we set K? Is it depend on vector/matrix size?
 

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