[Octave-bug-tracker] [bug #54261] blkmm error for some size of input

[Rik]

Update of bug #54261 (project octave):

                  Status:                    None => Confirmed              

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Follow-up Comment #1:

Confirmed.  I suppose what is really needed is a test in blkmm for an empty
matrix (m = 0 or p = 0).  In that case, there is no need to call the
underlying multiplication routines.  Doing a little debugging with ordinary
matrices


octave:8> x = ones (0,3)
x = [](0x3)
octave:9> y = ones (3,4)
y =

   1   1   1   1
   1   1   1   1
   1   1   1   1

octave:10> x * y
ans = [](0x4)


So in the following case, the output should be [](0x4x3), instead of an
error.


octave:11> x = zeros (0,3,3)
x = [](0x3x3)
octave:12> y = ones (3,4,3);
octave:13> c = blkmm (x,y)
error: Fortran procedure terminated by call to XERBLA




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