[Scipy-tickets] [SciPy] #1676: Errors in t statistic , scipy.stats.test() fails due to assertion error

SciPy Trac scipy-tickets@scipy....
Wed Aug 1 14:58:04 CDT 2012

#1676: Errors in t statistic ,scipy.stats.test() fails due to assertion error
 Reporter:  blowthesax               |       Owner:  pv         
     Type:  defect                   |      Status:  new        
 Priority:  normal                   |   Milestone:  Unscheduled
Component:  scipy.special            |     Version:  0.10.0     
 Keywords:  t test, assertion error  |  

Comment(by pv):

 Indeed, the call ends up in cdflib. `_cephesmodule.c` however contains
 misleading lines that insert also a function calling cephes, but later
 replace it with the cdflib version -- some cleanup is needed there.

 Interestingly, I'm not able to reproduce this issue with gfortran 4.6.3,
 4.7-20120507, 4.7-20120728, but it does occur with 4.7-20120414. The
 failing file is `erfc1.f`,
       program main
       double precision erfc1
       write(*,*) erfc1(0, 3.5128525648023086d0)
       write(*,*) 'should be', 6.767356415489139d-07
 Compiler issue (which seems to also have been already fixed) seems likely.

Ticket URL: <http://projects.scipy.org/scipy/ticket/1676#comment:7>
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