[Python-bugs-list] [ python-Bugs-513866 ] Float/long comparison anomaly

[noreply@sourceforge.net]

Bugs item #513866, was opened at 2002-02-06 10:33
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=105470&aid=513866&group_id=5470

Category: Python Interpreter Core
Group: Python 2.2
Status: Open
Resolution: None
Priority: 5
Submitted By: Andrew Koenig (arkoenig)
>Assigned to: Tim Peters (tim_one)
Summary: Float/long comparison anomaly

Initial Comment:
Comparing a float and a long appears to convert the 
long to float and then compare the two floats.  This 
strategy is a problem because the conversion might 
lose precision.  As a result, == is not an equivalence 
relation and < is not an order relation.  For example, 
it is possible to create three numbers a, b, and c 
such that a==b, b==c, and a!=c.

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

You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=105470&aid=513866&group_id=5470