posted 17 years ago
What happens if you repeat the "d" two or three times in a row? Does this have any effect on subsequent results? Or, what if you omit some (or all) of the "d" commands? I would suggest that what the "d" does is fairly simple, but much of the interesting action here occurs on "+" instead.
I'm also a bit mystified about why an RPN calculator would need a "=" at all. But that's mostly a side issue at the moment, I think.
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