Benchmark: timing 1000000 iterations of for(;;), while(1)...
   for(;;): 71 wallclock secs (71.66 usr +  0.00 sys = 71.66 CPU) @ 13955.57/s (n=1000000)
  while(1): 71 wallclock secs (71.67 usr +  0.00 sys = 71.67 CPU) @ 13952.45/s (n=1000000)
            Rate while(1)  for(;;)
while(1) 13952/s       --      -0%
for(;;)  13956/s       0%       --