On 29/12/2021 02:10, Marco van de Voort via lazarus wrote:
On 28-12-2021 23:35, Martin Frb via lazarus wrote:
"nx" has a single "1" in each of the 8 bytes in a Qword (based on
64bit).
If we regard each of this bytes as an entity of its own, then we can
keep adding those "1".
I also was thinking in that direction, but more about how to optimize
that loop using SSE2
good idea...
// Martin's routine that should be replaced by some punpkl magic, but
it is too late now.
Why too late?
There is a place for both. My routine works fine for cpu. (soon as a 32
bit (and maybe 16 bit) variant are added).
Then for known cpu, special handling can be added.
--
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