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This commit is contained in:
Vitor Pamplona
2025-12-12 18:24:19 -05:00
parent c89ae5782e
commit 286d9c8347
1 changed files with 21 additions and 40 deletions
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quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/hints/bloom/MurmurHash3.kt
+21 -40
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@@ -65,39 +65,20 @@ class MurmurHash3 {
}
// processing tail (remaining bytes)
k1 = 0
when (data.size and 3) {
3 -> {
k1 = k1 or ((data[i + 2].int()) shl 16)
k1 = k1 or ((data[i + 1].int()) shl 8)
k1 = k1 or data[i].int()
k1 *= C1_32
k1 = k1.rotateLeft(15)
k1 *= C2_32
h1 = h1 xor k1
k1 = (((data[i + 2].int()) shl 16) or ((data[i + 1].int()) shl 8) or data[i].int()) * C1_32
h1 = h1 xor k1.rotateLeft(15) * C2_32
}
2 -> {
k1 = k1 or (data[i + 1].int() shl 8)
k1 = k1 or data[i].int()
k1 *= C1_32
k1 = k1.rotateLeft(15)
k1 *= C2_32
h1 = h1 xor k1
k1 = ((data[i + 1].int() shl 8) or data[i].int()) * C1_32
h1 = h1 xor k1.rotateLeft(15) * C2_32
}
1 -> {
k1 = k1 or data[i].int()
k1 *= C1_32
k1 = k1.rotateLeft(15)
k1 *= C2_32
h1 = h1 xor k1
k1 = data[i].int() * C1_32
h1 = h1 xor k1.rotateLeft(15) * C2_32
}
}
@@ -159,50 +140,50 @@ class MurmurHash3 {
k2 = 0L
if (rem == 15) {
k2 = k2 xor (data[roundedEnd + 14].long() shl 48)
k2 = k2 or (data[roundedEnd + 14].long() shl 48)
}
if (rem >= 14) {
k2 = k2 xor (data[roundedEnd + 13].long() shl 40)
k2 = k2 or (data[roundedEnd + 13].long() shl 40)
}
if (rem >= 13) {
k2 = k2 xor (data[roundedEnd + 12].long() shl 32)
k2 = k2 or (data[roundedEnd + 12].long() shl 32)
}
if (rem >= 12) {
k2 = k2 xor (data[roundedEnd + 11].long() shl 24)
k2 = k2 or (data[roundedEnd + 11].long() shl 24)
}
if (rem >= 11) {
k2 = k2 xor (data[roundedEnd + 10].long() shl 16)
k2 = k2 or (data[roundedEnd + 10].long() shl 16)
}
if (rem >= 10) {
k2 = k2 xor (data[roundedEnd + 9].long() shl 8)
k2 = k2 or (data[roundedEnd + 9].long() shl 8)
}
if (rem >= 9) {
k2 = k2 xor data[roundedEnd + 8].long()
k2 = k2 or data[roundedEnd + 8].long()
h2 = h2 xor (k2 * C2_128_X64).rotateLeft(R3_128_X64) * C1_128_X64
}
if (rem >= 8) {
k1 = k1 xor (data[roundedEnd + 7].long() shl 56)
k1 = k1 or (data[roundedEnd + 7].long() shl 56)
}
if (rem >= 7) {
k1 = k1 xor (data[roundedEnd + 6].long() shl 48)
k1 = k1 or (data[roundedEnd + 6].long() shl 48)
}
if (rem >= 6) {
k1 = k1 xor (data[roundedEnd + 5].long() shl 40)
k1 = k1 or (data[roundedEnd + 5].long() shl 40)
}
if (rem >= 5) {
k1 = k1 xor (data[roundedEnd + 4].long() shl 32)
k1 = k1 or (data[roundedEnd + 4].long() shl 32)
}
if (rem >= 4) {
k1 = k1 xor (data[roundedEnd + 3].long() shl 24)
k1 = k1 or (data[roundedEnd + 3].long() shl 24)
}
if (rem >= 3) {
k1 = k1 xor (data[roundedEnd + 2].long() shl 16)
k1 = k1 or (data[roundedEnd + 2].long() shl 16)
}
if (rem >= 2) {
k1 = k1 xor (data[roundedEnd + 1].long() shl 8)
k1 = k1 or (data[roundedEnd + 1].long() shl 8)
}
if (rem >= 1) {
k1 = k1 xor data[roundedEnd].long()
k1 = k1 or data[roundedEnd].long()
h1 = h1 xor (k1 * C1_128_X64).rotateLeft(R1_128_X64) * C2_128_X64
}