func math/bits.Len

7 uses

	math/bits (current package)
		bits.go#L25: func LeadingZeros(x uint) int { return UintSize - Len(x) }
		bits.go#L302: func Len(x uint) int {

	math/big
		nat.go#L678: 		return i*_W + bits.Len(top)
		natdiv.go#L733: 	recDepth := 2 * bits.Len(uint(len(v)))

	sort
		slice.go#L25: 	limit := bits.Len(uint(length))
		sort.go#L50: 	limit := bits.Len(uint(n))
		sort.go#L73: 	shift := uint(bits.Len(uint(length)))

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