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[Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf)


From: Rik
Subject: [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf)
Date: Fri, 3 Nov 2017 11:52:39 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0

Follow-up Comment #5, bug #52285 (project octave):

Another test case that needs to be run through Matlab


inv (diag ([0 0]))


In Octave, this produces a special Diagonal matrix with Inf only on the
diagonal.


inv (diag ([0 0]))
ans =

Diagonal Matrix

   Inf     0
     0   Inf


On the other hand, my guess is that Matlab will return all Inf as in



 inv (full (diag ([0 0])))
warning: matrix singular to machine precision
ans =

   Inf   Inf
   Inf   Inf




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