old_t1 = fr.time;
j++;
new_natoms = fr.natoms;
-#define INC(s, n, f, l, item) if (s.item != 0) { if (n.item == 0) { first.item = fr.time; } last.item = fr.time; n.item++; \
+#define INC(s, n, f, l, item) if ((s).item != 0) { if ((n).item == 0) { first.item = fr.time; } last.item = fr.time; (n).item++; \
}
INC(fr, count, first, last, bStep);
INC(fr, count, first, last, bTime);