+/**
+ * Function called for all addresses and peers to find the minimum and
+ * maximum (averaged) values for a given quality property. Given
+ * those, we can then calculate the normalized score.
+ *
+ * @param cls the `struct PropertyRange`
+ * @param h which peer are we looking at (ignored)
+ * @param k the address for that peer
+ * @return #GNUNET_OK (continue to iterate)
+ */
+static int
+find_min_max_it (void *cls,
+ const struct GNUNET_PeerIdentity *h,
+ void *k)
+{
+ struct PropertyRange *pr = cls;
+ const struct ATS_Address *a = k;
+
+ pr->max.utilization_out = GNUNET_MAX (pr->max.utilization_out,
+ a->properties.utilization_out);
+ pr->max.utilization_in = GNUNET_MAX (pr->max.utilization_in,
+ a->properties.utilization_in);
+ pr->max.distance = GNUNET_MAX (pr->max.distance,
+ a->properties.distance);
+ pr->max.delay = GNUNET_TIME_relative_max (pr->max.delay,
+ a->properties.delay);
+ pr->min.utilization_out = GNUNET_MIN (pr->min.utilization_out,
+ a->properties.utilization_out);
+ pr->min.utilization_in = GNUNET_MIN (pr->min.utilization_in,
+ a->properties.utilization_in);
+ pr->min.distance = GNUNET_MIN (pr->min.distance,
+ a->properties.distance);
+ pr->min.delay = GNUNET_TIME_relative_min (pr->min.delay,
+ a->properties.delay);
+ return GNUNET_OK;
+}