func isInBounds(x *Element) bool {
	return bits.Len64(x.l0) <= 52 &&
		bits.Len64(x.l1) <= 52 &&
		bits.Len64(x.l2) <= 52 &&
		bits.Len64(x.l3) <= 52 &&
		bits.Len64(x.l4) <= 52
}

func TestMultiplyDistributesOverAdd(t *testing.T) {
	multiplyDistributesOverAdd := func(x, y, z Element) bool {
		// Compute t1 = (x+y)*z
		t1 := new(Element)
		t1.Add(&x, &y)
		t1.Multiply(t1, &z)

		// Compute t2 = x*z + y*z