[Octave-bug-tracker] [bug #43742] ifft, ifft2, ifftn should accept 'nonsymmetric' and 'symmetric' options

[Hg200]

Follow-up Comment #10, bug #43742 (project octave):

I have tested fix 1.) for a few days now. There are two issues I would like to
update: First, Matlab gives an error when the "symflag" is put into the
"fft()" instead into the "ifft()" function. In this case, the Octave patch
does not give an error message. Second, there is a "corner case" when a
one-point ifft() is calculated:

 
ifft(1+1i,'symmetric')


In fft.cc this is handled separately, without calling FFTW. In this case,
however, the real part must also be returned. It's probably also a good idea
to add some BISTS to check the input validation.

I will do some further testing and will update the patch.

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