Vectorized CLZ and CTZ

(purplesyringa.moe)

26 points | by zX41ZdbW 1 day ago

3 comments

wahern 10 minutes ago
Pretty cool that they seemed to have come up with the idea on their own, but they're definitely not the first: https://graphics.stanford.edu/~seander/bithacks.html#ZerosOn...
jandrewrogers 2 hours ago
This is a good illustration of what competent SIMD code requires.
saagarjha 2 hours ago
Might be useful on a GPU or something I guess?