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Benchmark: timing 1000000 iterations of and_maker 5 elements, multi_an
+d 5 elements...
...
and_maker 50000 elements: 1 wallclock secs ( 0.97 usr + 0.01 sys =
+0.98 CPU) @ 102.04/s (n=100)
multi_and 50000 elemets: 1 wallclock secs ( 0.96 usr + 0.00 sys = 0
+.96 CPU) @ 104.17/s (n=100)