Use numerical comparison, so we don't get 100 != 1e2

I noticed that if I used scientific notation for the number of tests, it would run forever.  This is because `(not= 100 1e2)`, but `(== 100 1e2)`, which is extremely non-obvious, but there you go.
Merge pull request #16 from ztellman/patch-1

Use numerical comparison, so we don't get 100 != 1e2