if (debug_flag) dbg_log (_("grp_cache_search_neg (%s|%ld)"), key, hash);
cache_search_neg (const char *key){  neghash *work;  unsigned long int hash = __nis_hash (key, strlen (key)) % modulo;  work = &negtbl[hash];  while (work->key != NULL)    {      if (strcmp (work->key, key) == 0)	return 1;      if (work->next != NULL)	work = work->next;      else	return 0;    }  return 0;}