Benchmark: timing 100000 iterations of csimple3, simple3...
  csimple3:  5 wallclock secs ( 4.43 usr +  0.00 sys =  4.43 CPU) 
                   @ 22573.36/s (n=100000)
   simple3: 19 wallclock secs (16.90 usr +  0.01 sys = 16.91 CPU) 
                   @ 5913.66/s (n=100000)