smichr/sympy — comment on commit d373e385d60e7050f8a8b35d4b17ac753665e987
File:  line 0
By smichr:

I'm not sure what you are intending to show. I'm imagining that you
are thinking that since there wasn't a gcd to extract that this means
the two methods should be the same speed. But you can't tell that
unless you still make the attempt -- which takes time. But I'll see if
there is a short-circuit that I'm not taking advantage of. I think I
assumed that letting the gcd run even though 1 may have been obtained
would be about the same as check that it had become 1 every time I
calculate the gcd between two new terms.