> Then you are using an old version of .NET and that's hardly fair in a state
> of the art comparison.

This was my fault, I just copied the contents of the class and missed
the using statements. Once I added System.Diagnostics, Stopwatch works
fine (this doesn't affect performance). But I'm definitely using .NET
4.

> Coincidentally, Java is now gaining support for
> unsigned integers [http://blogs.oracle.com/darcy/entry/unsigned_api] but
> it's little more than syntax sugar (MSB semantics adapter).

>From looking at the patches, it doesn't look like they are adding real
unsigned integer data types, but rather adding system library
functions to interpret existing signed primitive types as unsigned
values. I'd presume that may lead to limited performance gains if the
VM adds special optimizations on top of the Java source code
implementation.

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