//go:nosplit
func Xchg64(addr *uint64, new uint64) (old uint64) {
	lockAndCheck(addr)

	old = *addr
	*addr = new

	unlock()
	return
}

//go:nosplit
func Cas64(addr *uint64, old, new uint64) (swapped bool) {
	lockAndCheck(addr)

	if (*addr) == old {
		*addr = new
		unlock()
		return true
	}

	unlock()
	return false
}

//go:nosplit
func Load64(addr *uint64) (val uint64) {

	return s.Min.X <= r.Min.X && r.Max.X <= s.Max.X &&
		s.Min.Y <= r.Min.Y && r.Max.Y <= s.Max.Y
}

// Canon returns the canonical version of r. The returned rectangle has minimum
// and maximum coordinates swapped if necessary so that it is well-formed.
func (r Rectangle) Canon() Rectangle {
	if r.Max.X < r.Min.X {
		r.Min.X, r.Max.X = r.Max.X, r.Min.X
	}
	if r.Max.Y < r.Min.Y {
		r.Min.Y, r.Max.Y = r.Max.Y, r.Min.Y
	}

//
// All calls to CompareAndSwap for a given Value must use values of the same
// concrete type. CompareAndSwap of an inconsistent type panics, as does
// CompareAndSwap(old, nil).
func (v *Value) CompareAndSwap(old, new any) (swapped bool) {
	if new == nil {
		panic("sync/atomic: compare and swap of nil value into Value")
	}
	vp := (*efaceWords)(unsafe.Pointer(v))
	np := (*efaceWords)(unsafe.Pointer(&new))

			actualSize: -1,
			sha256hex:  "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
			err:        ioutil.ErrOverread,
		},
		7: {
			desc:       "Correct sha256, nested, truncated, swapped",
			src:        mustReader(t, bytes.NewReader([]byte("abcd-more-stuff-to-be ignored")), 4, "", "", -1),
			size:       4,
			actualSize: -1,
			sha256hex:  "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",

	// dynamicTransformers updates the transformers when encryption config file changes.
	dynamicTransformers *encryptionconfig.DynamicTransformers

	// identity of the api server
	apiServerID string

	// can be swapped during testing
	getEncryptionConfigHash func(ctx context.Context, filepath string) (string, error)

	}

	x.before = _magic
	x.after = _magic
	for j := 0; j < 32; j += 1 {
		x.i = (1 << j) + 0
		x.o = (1 << j) + 0
		x.n = (1 << j) + 1
		if !atomic.CasRel(&x.i, x.o, x.n) {
			t.Fatalf("should have swapped %#x %#x", x.o, x.n)
		}

		if x.i != x.n {
			t.Fatalf("wrong x.i after swap: x.i=%#x x.n=%#x", x.i, x.n)
		}

		if x.before != _magic || x.after != _magic {

// can detect that the lack of body was intentional.
var errNoBody = errors.New("sentinel error value")

// failureToReadBody is an io.ReadCloser that just returns errNoBody on
// Read. It's swapped in when we don't actually want to consume
// the body, but need a non-nil one, and want to distinguish the
// error from reading the dummy body.
type failureToReadBody struct{}

   * a {@link MoveDesc}. The first one is the element that was previously at the end of the heap and
   * is now at some position before {@code index}. The second element is the one that was swapped
   * down to replace the element at {@code index}. This fact is used by iterator.remove so as to
   * visit elements during a traversal once and only once.
   */
  @VisibleForTesting
  @CanIgnoreReturnValue

   * a {@link MoveDesc}. The first one is the element that was previously at the end of the heap and
   * is now at some position before {@code index}. The second element is the one that was swapped
   * down to replace the element at {@code index}. This fact is used by iterator.remove so as to
   * visit elements during a traversal once and only once.
   */
  @VisibleForTesting
  @CanIgnoreReturnValue

					},
					{
						Hostname: ptr.To("hostname-1b"),
						NodeName: ptr.To("node-1"),
					},
				},
			},
		},
		{
			name:      "v1 request, updated endpoints with topology node names swapped",
			v1Request: true,
			originalEPS: &discovery.EndpointSlice{
				Endpoints: []discovery.Endpoint{
					{
						Hostname:           ptr.To("hostname-1"),