[Scipy-tickets] [SciPy] #737: gammaln valid range is incorrect

SciPy scipy-tickets@scipy....
Sat Nov 1 08:50:34 CDT 2008


#737: gammaln valid range is incorrect
--------------------+-------------------------------------------------------
 Reporter:  cdavid  |        Owner:  cdavid
     Type:  defect  |       Status:  new   
 Priority:  high    |    Milestone:  0.7.0 
Component:  Other   |      Version:        
 Severity:  normal  |   Resolution:        
 Keywords:          |  
--------------------+-------------------------------------------------------
Comment (by cdavid):

 It is expected for gammaln(-1.0) not to give a real number, since gamma
 itself is not defined for negative integers. gammaln obviously only makes
 sense for the values where gamma itself is strictly positive, and this
 only happens for positive x, or negative x if floor(x) is odd.

-- 
Ticket URL: <http://scipy.org/scipy/scipy/ticket/737#comment:3>
SciPy <http://www.scipy.org/>
SciPy is open-source software for mathematics, science, and engineering.


More information about the Scipy-tickets mailing list