Rate goto_recur  recursive tail_recur    looping
goto_recur  3437/s         --       -59%       -60%       -90%
recursive   8472/s       147%         --        -1%       -76%
tail_recur  8569/s       149%         1%         --       -76%
looping    35417/s       931%       318%       313%         --