[Scipy-tickets] [SciPy] #1589: special.kv goes from 0 to nan for large numbers

SciPy Trac scipy-tickets@scipy....
Wed Feb 15 16:19:37 CST 2012


#1589: special.kv goes from 0 to nan for large numbers
---------------------------+------------------------------------------------
 Reporter:  johannct       |       Owner:  pv         
     Type:  defect         |      Status:  new        
 Priority:  normal         |   Milestone:  Unscheduled
Component:  scipy.special  |     Version:  0.10.0     
 Keywords:  bessel         |  
---------------------------+------------------------------------------------

Comment(by pv):

 Actually, the `kv` implementation comes from AMOS, I remembered that wrong
 earlier.

 Apparently the safe threshold is |z| >> 1 and z > sqrt(v), but I'd need to
 double check that.

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/1589#comment:1>
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