func math/bits.Len64

7 uses

	math/bits (current package)
		bits.go#L37: func LeadingZeros64(x uint64) int { return 64 - Len64(x) }
		bits.go#L306: 	return Len64(uint64(x))
		bits.go#L337: func Len64(x uint64) (n int) {

	crypto/internal/fips140/sha3
		shake.go#L38: 	n := (bits.Len64(x) + 7) / 8

	crypto/x509
		oid.go#L77: 	return (bits.Len64(n) + 6) / 7

	internal/strconv
		ftoafixed.go#L38: 	b := 64 - bits.Len64(mant)

	runtime
		stack.go#L189: 	return bits.Len64(uint64(n))