PRI_LT
pri_cmp = PRI_LT;
pri_cmp = PRI_LT | PRI_EQ | PRI_GT;
pri_cmp ^= PRI_LT | PRI_EQ | PRI_GT;
||(((f)->f_pcmp[fac] & PRI_LT) && ((f)->f_pmask[fac] < (sev))) \