assertThat(compactTable.sections.length).isLessThan(1 shl 14)

    // Less than 65,536 bytes, because we binary search on a 14-bit index with a stride of 4 bytes.
    assertThat(compactTable.ranges.length).isLessThan((1 shl 14) * 4)

    // Less than 16,384 chars, because we index on a 14-bit index in the ranges table.
    assertThat(compactTable.mappings.length).isLessThan(1 shl 14)

    // Confirm the data strings are ASCII.

	Leq // <=
	Gtr // >
	Geq // >=

	// precAdd
	Add // +
	Sub // -
	Or  // |
	Xor // ^

	// precMul
	Mul    // *
	Div    // /
	Rem    // %
	And    // &
	AndNot // &^
	Shl    // <<
	Shr    // >>
)

// Operator precedences
const (
	_ = iota
	precOrOr
	precAndAnd
	precCmp
	precAdd
	precMul

            throw ProtocolException("invalid encoding for length")
          }

          for (i in 1 until lengthBytes) {
            lengthBits = lengthBits shl 8
            lengthBits += source.readByte().toInt() and 0xff
          }

          if (lengthBits < 0) throw ProtocolException("length > Long.MAX_VALUE")

          lengthBits
        }
        else -> {

				break
			}
		}
	}
}

func BenchmarkZeroShifts(b *testing.B) {
	x := rndNat(800)

	b.Run("Shl", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			var z nat
			z.shl(x, 0)
		}
	})
	b.Run("ShlSame", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			x.shl(x, 0)
		}
	})

	b.Run("Shr", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			var z nat
			z.shr(x, 0)

	// - the low-order 1 will be used during rounding then discarded.
	exp := alen - blen
	var a2, b2 nat
	a2 = a2.set(a)
	b2 = b2.set(b)
	if shift := Msize2 - exp; shift > 0 {
		a2 = a2.shl(a2, uint(shift))
	} else if shift < 0 {
		b2 = b2.shl(b2, uint(-shift))
	}

	// 2. Compute quotient and remainder (q, r).  NB: due to the
	// extra shift, the low-order bit of q is logically the
	// high-order bit of r.
	var q nat

	}
}

func TestIssue31084(t *testing.T) {
	// compute 10^n via 5^n << n.
	const n = 165
	p := nat(nil).expNN(nat{5}, nat{n}, nil, false)
	p = p.shl(p, n)
	got := string(p.utoa(10))
	want := "1" + strings.Repeat("0", n)
	if got != want {
		t.Errorf("shl(%v, %v)\n\tgot  %s\n\twant %s", p, n, got, want)
	}
}

	// s390x:"RISBGZ\t[$]48, [$]15, [$]0,"
	return x & 0xffff00000000ffff
}

func issue44228a(a []int64, i int) bool {
	// amd64: "BTQ", -"SHL"
	return a[i>>6]&(1<<(i&63)) != 0
}
func issue44228b(a []int32, i int) bool {
	// amd64: "BTL", -"SHL"
	return a[i>>5]&(1<<(i&31)) != 0
}

func issue48467(x, y uint64) uint64 {
	// arm64: -"NEG"
	d, borrow := bits.Sub64(x, y, 0)
	return x - d&(-borrow)

	switch {
	case ex < ey:
		if al {
			t := nat(nil).shl(y.mant, uint(ey-ex))
			z.mant = z.mant.add(x.mant, t)
		} else {
			z.mant = z.mant.shl(y.mant, uint(ey-ex))
			z.mant = z.mant.add(x.mant, z.mant)
		}
	default:
		// ex == ey, no shift needed
		z.mant = z.mant.add(x.mant, y.mant)
	case ex > ey:
		if al {
			t := nat(nil).shl(x.mant, uint(ex-ey))
			z.mant = z.mant.add(t, y.mant)

	}
	inspect.Preorder(nodeFilter, func(node ast.Node) {
		if dead[node] {
			// Skip shift checks on unreachable nodes.
			return
		}

		switch node := node.(type) {
		case *ast.BinaryExpr:
			if node.Op == token.SHL || node.Op == token.SHR {
				checkLongShift(pass, node, node.X, node.Y)
			}
		case *ast.AssignStmt:
			if len(node.Lhs) != 1 || len(node.Rhs) != 1 {
				return
			}

	// x (i.e., for mant we want x.prec + 1 bits).
	mant := nat(nil).set(x.mant)
	exp := int(x.exp) - mant.bitLen()
	s := mant.bitLen() - int(x.prec+1)
	switch {
	case s < 0:
		mant = mant.shl(mant, uint(-s))
	case s > 0:
		mant = mant.shr(mant, uint(+s))
	}
	exp += s
	// x = mant * 2**exp with lsb(mant) == 1/2 ulp of x.prec

	// 2) Compute lower bound by subtracting 1/2 ulp.
	var lower decimal