Benchmark: timing 50000 iterations of Marshall, Orig, YourMum...
  Marshall: 25 wallclock secs (25.16 usr +  0.00 sys = 25.16 CPU) @ 1987.52/s (n=50000)
      Orig: 39 wallclock secs (38.83 usr +  0.00 sys = 38.83 CPU) @ 1287.73/s (n=50000)
   YourMum: 40 wallclock secs (40.08 usr +  0.00 sys = 40.08 CPU) @ 1247.57/s (n=50000)