[Octave-bug-tracker] [bug #46912] qr not working as described

[Marco Caliari]

URL:
  <http://savannah.gnu.org/bugs/?46912>

                 Summary: qr not working as described
                 Project: GNU Octave
            Submitted by: caliari
            Submitted on: Sat 16 Jan 2016 08:09:04 AM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0
        Operating System: GNU/Linux

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Details:

There are several problems with qr. First of all, the most common use [Q, R] =
qr (A) is not described in the initial sequence of valid calls. Then, in the
description of the call [Q, R, P] = qr (A) I think it would be useful to write
that Q*R=A*P. Then, [C, R] = qr (A, B) simply ignores B and returns C*R=A.
Finally, [C, R] = qr (A, B, '0') gives an error.




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