vb.baseVal.x = u.x - (u.x - vb.baseVal.x) * (w2 / w1);
    vb.baseVal.y = u.y - (u.y - vb.baseVal.y) * (h2 / h1);
  }

  function handleWheel(e) {
    if (e.deltaY == 0) return;
    // Change scale factor by 1.1 or 1/1.1
    rescale(currentScale * (e.deltaY < 0 ? 1.1 : (1/1.1)),
            toSvg(e.offsetX, e.offsetY));
  }

  function setMode(m) {
    mode = m;
    touchid = null;
    touchid2 = null;
  }

	var logFiltered string
	if !req.Delta.IsEmpty() && !requiresResourceNamesModification(w.TypeUrl) {
		// Some types opt out of this and natively handle req.Delta
		logFiltered = " filtered:" + strconv.Itoa(len(w.ResourceNames)-len(req.Delta.Subscribed))
		w = &model.WatchedResource{
			TypeUrl:       w.TypeUrl,
			ResourceNames: req.Delta.Subscribed.UnsortedList(),
		}
	}

	var res model.Resources

	if config == nil {
		config = &DeltaADSConfig{}
	}
	delta := NewDelta(discoveryAddr, config, opts...)
	delta.cfg.BackoffPolicy = backoffPolicy
	return delta
}

func typeName[T proto.Message]() string {
	ft := new(T)
	return resource.APITypePrefix + string((*ft).ProtoReflect().Descriptor().FullName())
}

  }

  /** Returns a new bias. */
  private fun adapt(
    delta: Int,
    numpoints: Int,
    first: Boolean,
  ): Int {
    var delta =
      when {
        first -> delta / DAMP
        else -> delta / 2
      }
    delta += (delta / numpoints)
    var k = 0
    while (delta > ((BASE - TMIN) * TMAX) / 2) {
      delta /= (BASE - TMIN)
      k += BASE
    }

issue:
  - 47949
releaseNotes:
  - |
    **Enabled** [Delta xDS](https://www.envoyproxy.io/docs/envoy/latest/api-docs/xds_protocol#incremental-xds) by default. See upgrade notes for more information.
upgradeNotes:
  - title: Delta xDS on by default
    content: |
      In previous versions, Istio used the "State of the world" xDS protocol to configure Envoy.

func (d *delayQueue) Push(task Task) {
	d.pushInternal(&delayTask{do: task, runAt: time.Now()})
}

// PushDelayed will execute the task after waiting for the delay
func (d *delayQueue) PushDelayed(t Task, delay time.Duration) {
	task := &delayTask{do: t, runAt: time.Now().Add(delay)}
	d.pushInternal(task)
}

// pushInternal will enqueue the delayTask with retries.
func (d *delayQueue) pushInternal(task *delayTask) {
	select {

	_ = complex128(maxUint64)
)

// TODO(gri) find smaller deltas below

const delta32 = maxFloat32/(1 << 23)

const (
	_ float32 = - /* ERROR "overflow" */ (maxFloat32 + delta32)
	_ float32 = -maxFloat32
	_ float32 = maxFloat32
	_ float32 = maxFloat32 /* ERROR "overflow" */ + delta32

	_ = float32(- /* ERROR "cannot convert" */ (maxFloat32 + delta32))
	_ = float32(-maxFloat32)
	_ = float32(maxFloat32)

type DelayFunc func() time.Duration

// Timer takes an arbitrary delay function and returns a timer that can handle arbitrary interval changes.
// Use Backoff{...}.Timer() for simple delays and more efficient timers.
func (fn DelayFunc) Timer(c clock.Clock) Timer {
	return &variableTimer{fn: fn, new: c.NewTimer}
}

// Until takes an arbitrary delay function and runs until cancelled or the condition indicates exit. This

      m.size += patch ? 0 : operations_[m.op_index - shift].alloc;
      // deltas is sorted by location; apply any corrections to the current
      // operator.
      for (; idelta != deltas.end() && idelta->op_index == m.op_index;
           ++idelta) {
        m.size += idelta->size;
      }
      mapper(m);
      m.size -= patch ? 0 : operations_[m.op_index - shift].dealloc;
    }
  }

func putpclcdelta(linkctxt *Link, dctxt dwCtxt, s *LSym, deltaPC uint64, deltaLC int64) {
	// Choose a special opcode that minimizes the number of bytes needed to
	// encode the remaining PC delta and LC delta.
	var opcode int64
	if deltaLC < LINE_BASE {
		if deltaPC >= PC_RANGE {
			opcode = OPCODE_BASE + (LINE_RANGE * PC_RANGE)
		} else {
			opcode = OPCODE_BASE + (LINE_RANGE * int64(deltaPC))
		}
	} else if deltaLC < LINE_BASE+LINE_RANGE {