[Octave-bug-tracker] [bug #49832] operations on double limites are not compatiable to matlab

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?49832>

                 Summary: operations on double limites are not compatiable to
matlab
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Tue 13 Dec 2016 12:16:30 AM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: Bawazeer
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:


specially the power operation is totally different from matlab 2014.
octave version 4.3.0+


A=[-inf -realmax -1 -realmin -eps(0) 0 +eps(0) +realmin +1 +realmax +inf nan];


summ=repmat(A,12,1) +repmat(A',1,12);
%elements that are different from matlab
%(5,5) (6,5) (7,6) (5,6) (7,7) (6,7)
 
subb=repmat(A,12,1) -repmat(A',1,12);
%elements that are different from matlab
%(6,5) (7,5) (7,6) (5,6) (6,7) (5,7) 

mull=repmat(A,12,1).*repmat(A',1,12);
%elements that are different from matlab
%(7,3) (5,3) (3,5) (9,5) (3,7) (9,7) (7,9) (5,9)

divv=repmat(A,12,1)./repmat(A',1,12);
%elements that are different from matlab
%(3,5) (9,5) (3,7) (9,7) 

poww=repmat(A,12,1).^repmat(A',1,12);
%elements that are different from matlab
%almost all of them 

%compare this fogure between octave and matlab
% matlab figure seems more logical
spy(isfinite(poww))






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