[Scipy-tickets] [SciPy] #1543: Problem in btdtri

SciPy Trac scipy-tickets@scipy....
Tue Oct 25 16:45:39 CDT 2011


#1543: Problem in btdtri
---------------------------+------------------------------------------------
 Reporter:  ezander        |       Owner:  pv         
     Type:  defect         |      Status:  new        
 Priority:  normal         |   Milestone:  Unscheduled
Component:  scipy.special  |     Version:  0.8.0      
 Keywords:                 |  
---------------------------+------------------------------------------------
 btdtri(0.5, 0.5, 0.5) returns nan and complains about an invalid value,
 while all parameters are perfectly legal. If you go an ulp up or down with
 any of the parameters the function works as expected. Only if all of them
 are exactly 0.5.

 >>> import scipy.special
 >>> scipy.special.btdtri(0.5,0.5,0.5)
 Warning: invalid value encountered in btdtri
 nan

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/1543>
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