15 lines
160 B
Go
15 lines
160 B
Go
//go:build !go1.9
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// +build !go1.9
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package goimagehash
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func popcnt(x uint64) int {
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diff := 0
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for x != 0 {
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diff += int(x & 1)
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x >>= 1
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}
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return diff
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}
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