SIR I M A REGULAR FOLLOWER OF OPENBSC SOFTWARE...I HAVE SOME DOUBT IN PROGRAM auth.c (line no 45 to 49)..the doubt is hw the looping is done  from 0 to 4 and 8 to 12...can u pls give me any link to clear this doubt...one more thing there is a function [comp128(ainfo->a3a8_ki, atuple->rand, atuple->sres, atuple->kc)] in line no 63..but it is not defined..pls can u help me to knw this two doubt..