Benchmark: running Do_not_test, Test_defined, each for at least 10 CPU seconds...
Do_not_test: 11 wallclock secs (10.01 usr +  0.00 sys = 10.01 CPU) @ 365830.27/s (n=3661961)
Test_defined:  8 wallclock secs (10.02 usr +  0.00 sys = 10.02 CPU) @ 363485.63/s (n=3642126)