xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
xbt_dynar_foreach(ctn_str,cursor, str) {
xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
xbt_dynar_foreach(ctn_str,cursor, str) {