Re: types, was New Book: The School of Niklaus Wirth

Just a minor point:


Jerry Leichter <jerrold.leichter@smarts.com> wrote:
> [...] and signed arithmetic is *not* modulo-2^k arithmetic.


Well, it is, in a sense (you have an offset of 2^(k-1), but that's not a
very strong difference).
You may be confusing this with C, where signed arithmetic overflow has
undefined behaviour (probably because modulo arithmetic for signed
integers was considered too unimportant and too variant to be a useful
part of the standard).


(Stuff that I agree with snipped.)


Regards,
Joachim

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