}
	if IsSortedFunc(data, intPairCmp) {
		t.Fatalf("terrible rand.rand")
	}
	data.initB()
	SortStableFunc(data, intPairCmp)
	if !IsSortedFunc(data, intPairCmp) {
		t.Errorf("Stable didn't sort %d ints", n)
	}
	if !data.inOrder(false) {
		t.Errorf("Stable wasn't stable on %d ints", n)
	}

	// already sorted
	data.initB()
	SortStableFunc(data, intPairCmp)
	if !IsSortedFunc(data, intPairCmp) {

	n, m := 1000, 100
	data := make(intPairs, n)
	for i := range data {
		data[i].a = rand.IntN(m)
	}
	data.initB()

	s := intPairs(SortedStableFunc(Values(data), intPairCmp))
	if !IsSortedFunc(s, intPairCmp) {
		t.Errorf("SortedStableFunc didn't sort %d ints", n)
	}
	if !s.inOrder(false) {
		t.Errorf("SortedStableFunc wasn't stable on %d ints", n)
	}

	// iterVal converts a Seq2 to a Seq.