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Jeremy Fitzhardinge <jeremy@goop.org> writes: |> On Fri, 2002-12-20 at 04:17, Andreas Schwab wrote: |> > This is useless. Assigning -1 to any unsigned type is garanteed to give |> > you all bits one, and with two's complement this also holds for any signed |> > type. |> |> Only if the -1 is the same size as the unsigned type. Otherwise it will |> be 0-extended. Wrong. Unsigned arithmetics is defined as modulo MAX+1, and -1 equals MAX modulo MAX+1 for every MAX. Andreas. -- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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