[IronPython] Singles not comparing properly

Christian Muirhead christian.muirhead at resolversystems.com
Fri Nov 3 12:24:44 CET 2006


Hi guys -

We encountered a strange bug today, which we eventually worked out was 
being caused by the fact that a number we thought was a float (a Double) 
was actually a Single. The problem was this:

 >>> from System import Double, Single
 >>> d = Double(8.0)
 >>> d
8.0
 >>> 5 <= d <= 500
True
 >>> s = Single(8.0)
 >>> s
8.0
 >>> 5 <= s <= 500
False

There's no real analogue to this in CPython, but it feels like Single 
and Double should behave the same here. Is this a bug?

Thanks,
Christian



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