func (q *Quantity) AsInt64() (int64, bool) {
	if q.d.Dec != nil {
		return 0, false
	}
	return q.i.AsInt64()
}

// ToDec promotes the quantity in place to use an inf.Dec representation and returns itself.
func (q *Quantity) ToDec() *Quantity {
	if q.d.Dec == nil {
		q.d.Dec = q.i.AsDec()
		q.i = int64Amount{}
	}
	return q
}

		{1024 * 1024, BinarySI, "1Mi"},
	}

	for _, asDec := range []bool{false, true} {
		for _, item := range table {
			q := NewQuantity(item.value, item.format)
			if asDec {
				q.ToDec()
			}
			if e, a := item.expect, q.String(); e != a {
				t.Errorf("Expected %v, got %v; %#v", e, a, q)
			}
			q2, err := ParseQuantity(q.String())
			if err != nil {