Squeak archeology - quo vs. //
andreas.raab at gmx.de
Tue Apr 6 12:40:19 UTC 2004
Today I got very subtly bitten by // truncating towards negative infinity
rather than zero, e.g.,
3//2 -> 1
-3//2 -> -2
3 quo: 2 -> 1
-3 quo: 2 -> -1
The reason I got bitten is that the C translator generates // as C / which
has the semantics of #quo:. Meaning that any translated code which uses
integer divide with negative numbers will be subtly off.
My question here (and that's the historical part) how comes that // rounds
towards negative infinity?
Thanks for any enlightment,
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