[RC5] AXP client slow on RC5

bmeyer at cs.monash.edu.au bmeyer at cs.monash.edu.au
Mon Jun 4 21:30:32 EDT 2001


In local.rc5 you write:
>On Sat, 2 Jun 2001 bmeyer at cs.monash.edu.au wrote:
>> P.S.: Can someone come up with a use of the rotate instruction outside
>>       of cryptography?

>- Dividing or multiplying integers by two.  :-)  Of course, most ALU's
>optimize that sort of trickery into irrelevance these days.

That's a *shift*, unless you are looking for rather weird definitions of
dividing and multiplying.

>- Getting at the return value of a system() in C.

That, as far as I can tell, is also a shift.

>- Various graphics algorithms

But which ones use *rotates*, rather than shifts?

Bernie
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