Number of 1's in 64 bit number...[don't read if not interested in algos/math...]

[Richard Henderson]

On Thu, Apr 25, 2002 at 03:12:07PM -0400, Wei Qin wrote:
> On a x86 linux platform, it takes 80% more time than the table lookup one.

On hot cache, maybe.  On cold cache the arithmetic will
definitely be faster.


r~