[NumPy-Tickets] [NumPy] #1641: Strange behavior of ldexp on Python2.5 + Wine

NumPy Trac numpy-tickets@scipy....
Tue Oct 19 08:21:34 CDT 2010


#1641: Strange behavior of ldexp on Python2.5 + Wine
------------------------+---------------------------------------------------
 Reporter:  pv          |       Owner:  somebody
     Type:  defect      |      Status:  new     
 Priority:  normal      |   Milestone:  1.5.1   
Component:  numpy.core  |     Version:  1.5.0   
 Keywords:              |  
------------------------+---------------------------------------------------
 On Python 2.5 + MinGW + Wine (and probably on a real Windows, too):
 {{{
 >>> import numpy as np
 >>> np.iinfo('l').max
 2147483647
 >>> np.ldexp(2, 2147483647)
 0.0
 >>> np.ldexp(2, 2147483646)
 0.0
 >>> np.ldexp(2, 2147483645)
 Warning: overflow encountered in ldexp
 inf
 }}}
 On Python 2.6 the above works correctly.

 This occurs also on commit:d24db3430a and is therefore independent of
 #1633.

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/1641>
NumPy <http://projects.scipy.org/numpy>
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