bit shifting
Wim Boot
wimb at bart.nl
Tue Apr 14 18:21:52 UTC 1998
Ian Piumarta wrote:
>It's a well-known fact the there are two flavours of right shift,
>arithmetic and logical [1].
That's purely an implementation artifact resulting from limited
size integers. I totally agree with Eliot:
>IMNHO both the original poster and the ANSI standard are wrong :)
>Bit manipulation should be consistent with all negative numbers having
>an infinite number of ones "to the left" and all non-negative integers
>having an infinite number of zeros "to the left".
BTW, Hans-Martin complained about a _left_ shift:
> (-1 bitShift: 1) = -2
I wouldn't expect any other result, so I think there must have been a
typo somewhere.
Wim Boot
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