[squeak-dev] The Trunk: Kernel-cmm.568.mcz
Bert Freudenberg
bert at freudenbergs.de
Tue Apr 12 10:00:16 UTC 2011
On 12.04.2011, at 10:46, Bert Freudenberg wrote:
>
> On 12.04.2011, at 08:20, Nicolas Cellier wrote:
>
>> Bit by bit ?
>> I suggest using
>> http://graphics.stanford.edu/~seander/bithacks.html#ReverseParallel
>> reverse next power of two bits, then bitShift: the difference...
>>
>> Or someone else will exhibit a bitBlt hack :)
>>
>> Nicolas
>
>
> Well, there is IntegerTest>>testBitReversal, knock yourself out ;)
>
> I'm not sure I like the timed test but it looks like it should work. Actually, I am sure that I don't like it, but I am too lazy to fix. So there ;)
>
> - Bert -
Ah, I see you put an improvement in the inbox.
Note, however, that the test will not cover LargeIntegers. Unless you have a very very fast machine ;)
- Bert -
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