Brainfuck compare

        # if a>b, c=1
        # if a<b, c= 255
        # if a==b, c=0
        # Setup: 1,0,1,0,a,b,0 point to a
        # Result:x,x,x,x,x,x,c point to a
        +>>+>> , >,<
        >[<
            [->-[>]<<]
            <[-
                 >>[
                    >>+<<[-]
                 ]
                 >>.<<<<
            ]
            <[-
                >>>>-.<<<<<
            ]
            <-
        >>>>>[-]]
        <<<<<[
          >>>>
          [>>+<<[-]]
          >>.<<
          <<<<
        -]
        >>>>