コマンドには整数のビット演算が存在しないため、ビット演算を行いたい場合には1ビットずつ処理を行う必要があります。 素数積による疑似ビットベクトル表現を用いることで、ビットの密度を犠牲にして一部のビット演算を高速に行うことができます。
以下のように、素数の積を用いて長さ8のビットベクトルを表現することができます。
下位
function init | |
# 1782934792843521910 = 0x18be41bf_691f6f76 | |
# = (0x18be41bf, 0x691f6f76) | |
# = (415121855, 1763667830) | |
data modify storage _ source set value 1782934792843521910L | |
# 1782934792843521910 -> (415121855, 1763667830) | |
function split |
function high32:init | |
data modify storage _ a set value -1145395493543608220L | |
# (0xf01abcde00000064) | |
function high32:get {source: "storage _ a"} | |
# Function high32:get returned -266683170 | |
# (0xf01abcde) |
summon text_display ~ ~ ~ {text: '{"text": "a", "color": "black"}', background: 0, billboard: "center", UUID: [I; 0, 0, 0, 10]} | |
summon text_display ~ ~ ~ {text: '{"text": "b", "color": "black"}', background: 0, billboard: "center", UUID: [I; 0, 0, 0, 11]} | |
summon text_display ~ ~ ~ {text: '{"text": "c", "color": "black"}', background: 0, billboard: "center", UUID: [I; 0, 0, 0, 12]} | |
summon text_display ~ ~ ~ {text: '{"text": "(b⋅a)b", "color": "black"}', background: 0, billboard: "center", UUID: [I; 0, 0, 0, 0]} | |
summon text_display ~ ~ ~ {text: '{"text": "bab", "color": "black"}', background: 0, billboard: "center", UUID: [I; 0, 0, 0, 1]} | |
summon text_display ~ ~ ~ {text: '{"text": "(c⋅bab)c", "color": "black"}', background: 0, billboard: "center", UUID: [I; 0, 0, 0, 2]} | |
summon text_display ~ ~ ~ {text: '{"text": "c(bab)c", "color": "red"}', background: 0, billboard: "center", UUID: [I; 0, 0, 0, 3]} |
benchmark | 1.20-pre1 | 1.20-pre2 |
---|---|---|
baseline | 263.479460184556 ± 55.44590623221055 [ns/op] | 262.6772200457718 ± 55.05785493224197 [ns/op] |
data_get_byte | 433.98316762350913 ± 7.444825260824145 [ns/op] | 391.87628185594724 ± 18.936628742014072 [ns/op] |
data_get_byte_1 | 740.4393732769925 ± 20.93953249166631 [ns/op] | 456.17101920010447 ± 8.630503299692144 [ns/op] |
data_get_int | 412.08435852317024 ± 4.056129450233465 [ns/op] | 374.34500487014526 ± 2.435684193080521 [ns/op] |
data_get_int_1 | 737.7503310023358 ± 13.85836437954026 [ns/op] | 423.18244626398047 ± 1.329924149473285 [ns/op] |
data_get_list_0 | 406.8077717359254 ± 13.273700931499596 [ns/op] | 380.8705782109833 ± 18.39461975718555 [ns/op] |
data remove storage _ _ | |
data modify storage _ _[] set value 0 |
data remove storage _ a | |
data remove storage _ b | |
function ite |