}
		if got := uint32(tt.x) &^ uint32(tt.y); got != uint32(tt.want) {
			t.Errorf("%#x &^ %#x = %#x, want %#x", tt.x, tt.y, got, tt.want)
		}
	}
}

// Test to use BLSI, if available
func TestBLSI(t *testing.T) {
	for _, tt := range []struct {
		x, want uint64
	}{
		{0b00001111, 0b001},
		{0b00001110, 0b010},
		{0b00001100, 0b100},
		{0b11000110, 0b010},
		{0b00000000, 0b000},
	} {