[Octave-bug-tracker] [bug #48518] No warning for singular diagonal matrices

[Marco Caliari]

URL:
  <http://savannah.gnu.org/bugs/?48518>

                 Summary: No warning for singular diagonal matrices
                 Project: GNU Octave
            Submitted by: caliari
            Submitted on: Fri 15 Jul 2016 07:06:04 AM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Inaccurate Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

If you run


N = [1,0;0,0]; N \ [1;1]


you get a warning about the singularity of N, and matrix_type(N) is Singular.
But with


M = eye(2);, M(2,2) = 0; M \ [1;1]


no warning and matrix_type(M) is Unknown.




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