[Scipy-tickets] [SciPy] #503: bug in special function iv for large argumen

SciPy scipy-tickets@scipy....
Thu Nov 29 04:37:02 CST 2007


#503: bug in special function iv for large argumen
---------------------------+------------------------------------------------
 Reporter:  mbakker7       |        Owner:  somebody
     Type:  defect         |       Status:  new     
 Priority:  normal         |    Milestone:  0.7     
Component:  scipy.special  |      Version:          
 Severity:  normal         |   Resolution:          
 Keywords:                 |  
---------------------------+------------------------------------------------
Comment (by BlackShift):

 The problem is not the large argument, but the fact that the argument is
 real:


 {{{
 >>> scipy.special.iv(0,100+0j).real
 1.0737517071310738e+42
 >>> scipy.special.iv(0,100)
 5.7218566383804826e+41
 }}}

 This bug has been there for some time (at least a year) and I think it has
 been mentioned before, however I cannot find a ticket. The work around is
 to always include an imaginary part, even when you are only interested in
 real numbers.

-- 
Ticket URL: <http://scipy.org/scipy/scipy/ticket/503#comment:2>
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