Re: Advice on Unsigned Types
H. Peter Anvin (email@example.com)
4 Sep 2001 18:00:19 -0700
Followup to: <3B8EF269.BF457C7F@home.com>
By author: John Kacur <firstname.lastname@example.org>
In newsgroup: linux.dev.kernel
> The advice the author give on Unsigned Types is:
> "Avoid unnecessary complexity by minimizing your use of unsigned types.
> Specifically, don't use an unsigned type to represent a quantity just
> because it will never be negative (e.g."age" or "national debt").
> Use a signed type like int and you won't have to worry about boundary
> cases in the detailed rules for promoting mixed types.
> Only use unsigned types for bitfields or binary masks. Use casts in
> expressions, to make all the operands signed or unsigned, so the
> compiler does not have to choose the result type."
So the author isn't talking about developing operating systems. In
operating systems it's almost the other way around -- signed is really
<email@example.com> at work, <firstname.lastname@example.org> in private!
"Unix gives you enough rope to shoot yourself in the foot."
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