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https://codeberg.org/forgejo/forgejo
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45 lines
750 B
Go
45 lines
750 B
Go
// +build go1.9
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package bitset
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import "math/bits"
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func popcntSlice(s []uint64) uint64 {
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var cnt int
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for _, x := range s {
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cnt += bits.OnesCount64(x)
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}
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return uint64(cnt)
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}
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func popcntMaskSlice(s, m []uint64) uint64 {
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var cnt int
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for i := range s {
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cnt += bits.OnesCount64(s[i] &^ m[i])
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}
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return uint64(cnt)
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}
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func popcntAndSlice(s, m []uint64) uint64 {
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var cnt int
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for i := range s {
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cnt += bits.OnesCount64(s[i] & m[i])
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}
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return uint64(cnt)
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}
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func popcntOrSlice(s, m []uint64) uint64 {
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var cnt int
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for i := range s {
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cnt += bits.OnesCount64(s[i] | m[i])
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}
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return uint64(cnt)
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}
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func popcntXorSlice(s, m []uint64) uint64 {
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var cnt int
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for i := range s {
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cnt += bits.OnesCount64(s[i] ^ m[i])
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}
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return uint64(cnt)
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}
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