[Numpy-discussion] Incorrect OverflowError?

Todd Miller jmiller at stsci.edu
Thu Oct 23 13:31:25 CDT 2003


On Thu, 2003-10-23 at 11:36, Edward C. Jones wrote:
> #! /usr/bin/env python
> 
> import numarray
> from numarray.numerictypes import *
> 
> # I run Gentoo 1.4 Linux with gcc 3.2.2.
> 
> numarray.Error.setMode(all='ignore')
> 
> arr = numarray.zeros((1,), Float64)
> arr[0] = 4000000000.0
> print '%f' % arr[0]
> try:
>      arr[0] = 4000000000
>      print "Doesn't get here."
> except OverflowError, s:
>      print 'Python OverflowError raised'
>      print s
> # OverflowError: long int too large to convert to int
> 
> # The Python long "4000000000" can be represented as a C double.
> # If the OverflowError came from numarray, why was an exception raised?
> # Are these problems bugs?
> 
Yes.  The bug was a use of PyLong_AsLong instead of PyLong_AsLongLong. 
Keep looking!  :-)

Thanks,
Todd
> 
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-- 
Todd Miller 			
Space Telescope Science Institute
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