1e4, 1e5, 1e6, 1e7,
	}
	for _, i := range sizes {
		j := 2 * i
		b.Run(fmt.Sprintf("%d/%d", j, i), func(b *testing.B) {
			benchmarkDiv(b, j, i)
		})
	}
}

func TestFillBytes(t *testing.T) {
	checkResult := func(t *testing.T, buf []byte, want *Int) {
		t.Helper()
		got := new(Int).SetBytes(buf)
		if got.CmpAbs(want) != 0 {
			t.Errorf("got 0x%x, want 0x%x: %x", got, want, buf)