_t_6_c_m_p__a_t_t_r_s compares a set of attributes specified by aaaattttttttrrrr1111 to the
attributes in aaaattttttttrrrr2222.
Also note that tttt6666ccccmmmmpppp____aaaattttttttrrrrssss((((aaaattttttttrrrr1111,,,, aaaattttttttrrrr2222)))) is equivalent to
tttt6666ccccmmmmpppp____bbbbllllkkkk((((aaaattttttttrrrr1111,,,, aaaattttttttrrrr2222)))), and if the attributes _T_6__I_L and _T_6__P_R_O_C__A_T_T_R are
used in comparing attribute blocks they will be ignored as they are not
implemented.
RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEE
-_1 is returned and the error code is stored in eeeerrrrrrrrnnnnoooo, if attr1 or attr2
contain an invalid value.
_1 is returned if aaaattttttttrrrr1111 and aaaattttttttrrrr2222 contain an identical set of attributes