[New-bugs-announce] [issue16934] qsort doesn't work for double arrays

Stephane Poirier report at bugs.python.org
Fri Jan 11 15:13:56 CET 2013

New submission from Stephane Poirier:

qsort doesn't sort arrays that are defined with double elements.
You can find attached a script that shows this function working well for int (as described in the ctypes documentation). If int array is replaced by double array qsort doesn't sort any more.
Even worse, with python 2.6, the difference between a[0] and b[0] may be nan.
The script can be launch by 
python.exe testQSort33.py

components: ctypes
files: testQSort33.py
messages: 179680
nosy: stephane.poirier
priority: normal
severity: normal
status: open
title: qsort doesn't work for double arrays
type: behavior
versions: Python 2.6, Python 2.7, Python 3.3
Added file: http://bugs.python.org/file28696/testQSort33.py

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