Paul Lutus wrote:
> Brad Tilley wrote:
> 
>> Thanks for all the examples guys! Being Ruby, I thought there might be
>> some super simple method that just magically did this. I'll stick with
>> the old-fashioned modulo test.
> 
> If speed matters, the modulo test is way slower than testing the LSB.

Do you mean on a specific architecture, or is there a Ruby-specific 
reason for one to be slower than the other?