[Numpy-tickets] [NumPy] #950: multiply empty arrays gives nonzero result

NumPy numpy-tickets@scipy....
Wed Nov 5 17:10:15 CST 2008


#950: multiply empty arrays gives nonzero result
------------------------+---------------------------------------------------
 Reporter:  pierre      |       Owner:  somebody
     Type:  defect      |      Status:  new     
 Priority:  normal      |   Milestone:  1.3.0   
Component:  numpy.core  |     Version:  none    
 Severity:  normal      |    Keywords:          
------------------------+---------------------------------------------------
 Hi,

 I found this bug on mac os 10.5, with power pc and also on an intel
 computer (but not on a 64bit linux). I used numpy 1.1.1, 1.2, and the
 latest svn.

 In [6]: np.dot(np.array([]).reshape(1,0), np.array([]).reshape(0,1))
 Out[6]: array([[ 4.00002862]])

 In [7]: np.dot(np.array([]).reshape(2,0), np.array([]).reshape(0,3))
 Out[7]:
 array([[ 0.,  0.,  0.],
        [ 0.,  0.,  0.]])

 Thanks!
 Pierre

-- 
Ticket URL: <http://scipy.org/scipy/numpy/ticket/950>
NumPy <http://projects.scipy.org/scipy/numpy>
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