function test_OpLogEq()
   d0 = %pi
   d2 = [1 2 3 4 ; 5 6 7 8 ; 9 10 11 12 ; 13 14 15 16]
   z0 = d0 + %i * d0
   z2 = d2 + %i * d2
   g0 = 'A'
   g2 = "foo"

  //disp(g0==g0) // ! Unable to manage this case !
   
  disp(d0==d0)
  disp(z0==z0)
  disp(d2==d0)
  disp(z2==z0)

  disp(d0==d2)
  disp(z0==z2)

  disp(d2==d2)
  disp(z2==z2)
  
  disp(d2==z0)
  disp(z2==d0)
  
  disp(d0==z2)
  disp(z0==d2)
  
  disp(d0==z0)
  disp(z0==d0)

  disp(d2==z2)
  disp(z2==d2)
endfunction