[Octave-bug-tracker] [bug #51333] Reductions on an empty matrix is inconsistent

[Joel Dahne]

Follow-up Comment #2, bug #51333 (project octave):

Yes, that's what I found as well. This means that if we would choose to go
with Matlabs version it is just a matter of adding a check for "dim < 0" in
the following if-statement.

For "dot"  we add, right after the definition of dimx and dimy,


// Inconsistency: dot ([], []) = 0
if (dimx.ndims () == 2 && dimx(0) == 0 && dimx(1) == 0 &&
    dimy.ndims () == 2 && dimy(0) == 0 && dimy(1) == 0)
  {
    dimx(1) = 1;
    dimy(1) = 1;
  }


if we go with the version Octave has now. If we choose the matlab version we
also add "nargin == 2" to the condition.

I don't know if we should go with the Matlab version, but either way I think
it makes sense to do the changes to "dot".


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