Bugs item #1587679, was opened at 2006-10-31 05:46
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1587679&group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: David J.C. MacKay (djcmackay)
Assigned to: Nobody/Anonymous (nobody)
Summary: scipy gammaincinv gives incorrect answers

Initial Comment:
For extreme values, gamaincinv gives the answer '0.0'
when it should not do so.
Examples:

>>> import scipy.special as S
>>> S.gammainc( 50 , 12.00 )
2.3998794536786009e-16
>>> S.gammaincinv( 50 , 2.39e-16 )
11.996909478523992
>>> S.gammainc( 50 , 11.00 )
8.2075477738848345e-18
>>> S.gammaincinv( 50 , 8e-18 )
0.0


Python 2.4.3 (#2, Oct  6 2006, 07:52:30) 
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2

David
[EMAIL PROTECTED]


----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1587679&group_id=5470
_______________________________________________
Python-bugs-list mailing list 
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

Reply via email to