timethis 100000: 3.81796 wallclock secs ( 3.82 usr +  0.00 sys =  3.82 CPU) @ 26178.01/s (n=100000)
timethis 100000: 1.70095 wallclock secs ( 1.70 usr +  0.00 sys =  1.70 CPU) @ 58823.53/s (n=100000)
timethis 100000: 2.86398 wallclock secs ( 2.87 usr +  0.00 sys =  2.87 CPU) @ 34843.21/s (n=100000)
timethis 100000: 1.70098 wallclock secs ( 1.70 usr +  0.00 sys =  1.70 CPU) @ 58823.53/s (n=100000)
M1A: 100000
M1B: 0
M2A: 100000
M2B: 0