xx                 29 kernel/printf.c printint(long long xx, int base, int sign)
xx                 35 kernel/printf.c   if(sign && (sign = (xx < 0)))
xx                 36 kernel/printf.c     x = -xx;
xx                 38 kernel/printf.c     x = xx;
xx                 16 user/printf.c  printint(int fd, int xx, int base, int sgn)
xx                 23 user/printf.c    if(sgn && xx < 0){
xx                 25 user/printf.c      x = -xx;
xx                 27 user/printf.c      x = xx;