73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
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//
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// Package hamming distance calculations in Go
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//
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// https://github.com/steakknife/hamming
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//
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// Copyright © 2014, 2015, 2016, 2018 Barry Allard
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//
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// MIT license
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//
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package hamming
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import (
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"strconv"
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"unsafe"
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)
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// CountBitsInt8sPopCnt count 1's in x
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func CountBitsInt8sPopCnt(x []int8) (ret int)
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// CountBitsInt16sPopCnt count 1's in x
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func CountBitsInt16sPopCnt(x []int16) (ret int)
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// CountBitsInt32sPopCnt count 1's in x
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func CountBitsInt32sPopCnt(x []int32) (ret int)
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// CountBitsInt64sPopCnt count 1's in x
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func CountBitsInt64sPopCnt(x []int64) (ret int)
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// CountBitsIntsPopCnt count 1's in x
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func CountBitsIntsPopCnt(x []int) int {
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if strconv.IntSize == 64 {
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y := (*[]int64)(unsafe.Pointer(&x)) // #nosec G103
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return CountBitsInt64sPopCnt(*y)
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} else if strconv.IntSize == 32 {
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y := (*[]int32)(unsafe.Pointer(&x)) // #nosec G103
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return CountBitsInt32sPopCnt(*y)
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}
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panic("strconv.IntSize must be 32 or 64 bits")
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}
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// CountBitsUint8sPopCnt count 1's in x
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func CountBitsUint8sPopCnt(x []uint8) (ret int)
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// CountBitsUint16sPopCnt count 1's in x
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func CountBitsUint16sPopCnt(x []uint16) (ret int)
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// CountBitsUint32sPopCnt count 1's in x
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func CountBitsUint32sPopCnt(x []uint32) (ret int)
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// CountBitsUint64sPopCnt count 1's in x
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func CountBitsUint64sPopCnt(x []uint64) (ret int)
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// CountBitsUintsPopCnt count 1's in x
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func CountBitsUintsPopCnt(x []uint) int {
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if strconv.IntSize == 64 {
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y := (*[]uint64)(unsafe.Pointer(&x)) // #nosec G103
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return CountBitsUint64sPopCnt(*y)
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} else if strconv.IntSize == 32 {
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y := (*[]uint32)(unsafe.Pointer(&x)) // #nosec G103
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return CountBitsUint32sPopCnt(*y)
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}
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panic("strconv.IntSize must be 32 or 64 bits")
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}
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// CountBitsBytesPopCnt count 1's in x
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func CountBitsBytesPopCnt(x []byte) (ret int)
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// CountBitsRunesPopCnt count 1's in x
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func CountBitsRunesPopCnt(x []rune) (ret int)
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// CountBitsStringPopCnt count 1's in s
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func CountBitsStringPopCnt(s string) (ret int)
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