[Octave-bug-tracker] [bug #46103] inversion of a singular diagonal matrix A produces inv(A)==A

[jan]

Follow-up Comment #8, bug #46103 (project octave):


Ok, the argument of compatibility (with matlab) is valid. Does matlab nowadays
implement diagonal class? If not matlab's  behaviour might change in future. 

What is behaviour of matlab for the case of the sparse matrixes. 

Apart from the current behaviour, all mentioned solutions are acceptable for a
mathematician (at least this one). Still the case (a) in post #6 however is
the most natural one to me.  

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