mcp-victoriametrics

package bitset import "math/bits" func select64(w uint64, j uint) uint { seen := 0 // Divide 64bit part := w & 0xFFFFFFFF n := uint(bits.OnesCount64(part)) if n <= j { part = w >> 32 seen += 32 j -= n } ww := part // Divide 32bit part = ww & 0xFFFF n = uint(bits.OnesCount64(part)) if n <= j { part = ww >> 16 seen += 16 j -= n } ww = part // Divide 16bit part = ww & 0xFF n = uint(bits.OnesCount64(part)) if n <= j { part = ww >> 8 seen += 8 j -= n } ww = part // Lookup in final byte counter := 0 for ; counter < 8; counter++ { j -= uint((ww >> counter) & 1) if j+1 == 0 { break } } return uint(seen + counter) }