[08:35:03 jhorner@gateway scripts]$ ./20000608-2.pl 
Benchmark: timing 100000 iterations of a, b...
         a:  2 wallclock secs ( 1.49 usr +  0.00 sys =  1.49 CPU) @ 67114.09/s (n=100000)
         b:  1 wallclock secs ( 1.64 usr +  0.00 sys =  1.64 CPU) @ 60975.61/s (n=100000)
[08:35:16 jhorner@gateway scripts]$