}
		algo(&td)
		t.Logf("%s %8d elements: %11d Swap, %10d Less", name, n, td.nswap, td.ncmp)
	}
}

func TestCountStableOps(t *testing.T) { countOps(t, Stable, "Stable") }
func TestCountSortOps(t *testing.T)   { countOps(t, Sort, "Sort  ") }

func bench(b *testing.B, size int, algo func(Interface), name string) {
	if stringspkg.HasSuffix(testenv.Builder(), "-race") && size > 1e4 {