Benchmark: timing 25 iterations of Double, Single...
    Double:  2 wallclock secs ( 1.57 usr +  0.01 sys =  1.58 CPU) @ 15.82/s (n=25)
    Single:  1 wallclock secs ( 1.57 usr +  0.01 sys =  1.58 CPU) @ 15.82/s (n=25)
         Rate Double Single
Double 15.8/s     --    -0%
Single 15.8/s     0%     --