Benchmark: timing 10000 iterations of goto, iterative, regular...
      goto: 19 wallclock secs (18.92 usr +  0.00 sys = 18.92 CPU) @ 528.54/s (n=10000)
 iterative:  6 wallclock secs ( 6.23 usr +  0.00 sys =  6.23 CPU) @ 1605.14/s (n=10000)
   regular: 23 wallclock secs (22.94 usr +  0.00 sys = 22.94 CPU) @ 435.92/s (n=10000)
            Rate   regular      goto iterative
regular    436/s        --      -18%      -73%
goto       529/s       21%        --      -67%
iterative 1605/s      268%      204%        --