+void count_set_save (RSET *r, int *count)
+{
+ int psysno = 0;
+ int kno = 0;
+ struct it_key key;
+ RSFD rfd, wfd;
+ RSET w;
+ rset_temp_parms parms;
+
+ logf (LOG_DEBUG, "count_set_save");
+ *count = 0;
+ parms.key_size = sizeof(struct it_key);
+ w = rset_create (rset_kind_temp, &parms);
+ wfd = rset_open (w, RSETF_WRITE|RSETF_SORT_SYSNO);
+ rfd = rset_open (*r, RSETF_READ|RSETF_SORT_SYSNO);
+ while (rset_read (*r, rfd, &key))
+ {
+ if (key.sysno != psysno)
+ {
+ rset_write (w, wfd, &key);
+ psysno = key.sysno;
+ (*count)++;
+ }
+ kno++;
+ }
+ rset_close (*r, rfd);
+ rset_delete (*r);
+ rset_close (w, wfd);
+ *r = w;
+ logf (LOG_DEBUG, "%d keys, %d distinct sysnos", kno, *count);
+}
+