Benchmark: timing 100000 iterations of mine, original...
      mine:  4 wallclock secs ( 3.28 usr +  0.00 sys =  3.28 CPU) @ 30534.35/s (n=100000)
  original: 14 wallclock secs (13.12 usr +  0.00 sys = 13.12 CPU) @ 7622.53/s (n=100000)