[Octave-bug-tracker] [bug #54491] Order of evaluation of power with unitary operators

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?54491>

                 Summary: Order of evaluation of power with unitary operators
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Sat 11 Aug 2018 06:35:01 AM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: rahnema1
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.4.0
        Operating System: GNU/Linux

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Details:

According to the MATLAB documentation
<https://www.mathworks.com/help/matlab/matlab_prog/operator-precedence.html>
the operators (^-), (.^-), (^+), (.^+), (^~), and (.^~) work from second from
the right to left but in Octave they are evaluated from the left to right.

Test case:


z = 3;
out = z(a=1)^-(a=2);
out = z(b=1).^-(b=2);
out = z(c=1)^+(c=2);
out = z(d=1).^+(d=2);
out = z(ee=1)^~(ee=2);
out = z(f=1).^~(f=2);

disp([a b c d ee f])

#shows [2 2 2 2 2 2] but it should produce [1 1 1 1 1 1]






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