[Octave-bug-tracker] [bug #42487] issymmetric incompatible with Matlab

[Massimiliano Fasi]

Follow-up Comment #5, bug #42487 (project octave):

You're right again. It depends on the fact that logical matrices returned 0
when tested with issymmetric, much like what happens for ishermitian, where
instead of

retval = (isnumeric (A) || islogical (A)) && issquare (A);

one has

retval = isnumeric (A) && issquare (A);


I added islogical in order to be consistent with istril, istriu, isbanded and
bandwidth, but I didn't notice the problem with ishermitian at that time.

I think that both ishermitian and issymmetric should have the same behaviour.
They could return false either when the matrix is boolean or when the matix is
boolena AND a tolerance parameter is specified.

Any suggestions or ideas?

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