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https://github.com/hanzoai/traces.git
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Martin DisibioandGitHub
9aaf851965
* Upgrade parquet-go to latest for StructTag option * Upgrade parquet-go to get latest alloc fix
26 lines
564 B
Go
26 lines
564 B
Go
//go:build purego || (!amd64 && !arm64)
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package bitpack
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func unpackInt64(dst []int64, src []byte, bitWidth uint) {
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bits := unsafecastBytesToUint32(src)
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bitMask := uint64(1<<bitWidth) - 1
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bitOffset := uint(0)
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for n := range dst {
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i := bitOffset / 32
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j := bitOffset % 32
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d := (uint64(bits[i]) & (bitMask << j)) >> j
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if j+bitWidth > 32 {
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k := 32 - j
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d |= (uint64(bits[i+1]) & (bitMask >> k)) << k
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if j+bitWidth > 64 {
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k := 64 - j
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d |= (uint64(bits[i+2]) & (bitMask >> k)) << k
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}
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}
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dst[n] = int64(d)
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bitOffset += bitWidth
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}
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}
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