[Octave-bug-tracker] [bug #42177] Wrong second output argument for chol of a sparse matrix

[Marco Caliari]

URL:
  <http://savannah.gnu.org/bugs/?42177>

                 Summary: Wrong second output argument for chol of a sparse
matrix
                 Project: GNU Octave
            Submitted by: caliari
            Submitted on: Wed 23 Apr 2014 12:57:37 PM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.0
        Operating System: GNU/Linux

    _______________________________________________________

Details:

Dear all,

if you try


[R, info] = chol ([1, 1; 1, 1])


you correctly get info = 2 (the matrix is not SPD), but


[R, info] = chol (sparse ([1, 1; 1, 1]))


gives back info = 0.

Cheers,

Marco




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?42177>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/