+/** @brief Returns the position of the element in the dynar (or -1 if not found)
+ *
+ * Note that usually, the dynar indices are unsigned integers. If you have more
+ * than 2 million elements in your dynar, this very function will not work (but the other will).
+ */
+signed int xbt_dynar_search_or_negative(xbt_dynar_t const dynar, void *const elem)
+{
+ unsigned long it;
+
+ _dynar_lock(dynar);
+ for (it = 0; it < dynar->used; it++)
+ if (!memcmp(_xbt_dynar_elm(dynar, it), elem, dynar->elmsize)) {
+ _dynar_unlock(dynar);
+ return it;
+ }
+
+ _dynar_unlock(dynar);
+ return -1;
+}
+