Benchmark: timing 10000 iterations of abigail, grinder, posixguy, roger...
   abigail: 55 wallclock secs (51.42 usr +  0.12 sys = 51.54 CPU) @ 194.02/s (n=10000)
   grinder:  1 wallclock secs ( 0.60 usr +  0.00 sys =  0.60 CPU) @ 16666.67/s (n=10000)
  posixguy:  1 wallclock secs ( 0.96 usr +  0.00 sys =  0.96 CPU) @ 10416.67/s (n=10000)
     roger:  1 wallclock secs ( 0.61 usr +  0.00 sys =  0.61 CPU) @ 16393.44/s (n=10000)