ADDRLEN
#define GET_HOST_BY_ADDR(ADDR, ADDRLEN, FAMILY, HP, ERR, TMP) \
{ TMP = gethostbyaddr ((ADDR), (ADDRLEN), (FAMILY)); (ERR) = h_errno; (HP) = TMP; }
#define GET_HOST_BY_ADDR(ADDR, ADDRLEN, FAMILY, HP, ERR, TMP) \
my_ret = gethostbyaddr_r((ADDR), (ADDRLEN), (FAMILY), &TMP.ent, \
#define GET_HOST_BY_ADDR(ADDR, ADDRLEN, FAMILY, HP, ERR, TMP) \
(HP) = gethostbyaddr_r((ADDR), (ADDRLEN), (FAMILY), &TMP.ent, \
hp->h_length = ADDRLEN(af);