Well, the paper explicitly takes the principal branch to solve this. So it isn't... | Hacker News

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		lugao 18 days ago \| parent \| context \| favorite \| on: All elementary functions from a single binary oper... Well, the paper explicitly takes the principal branch to solve this. So it isn't exploiting the branching for computation.

gus_massa 18 days ago [–]

I agree, as the sibling comment there are two different things that are named "branches". Anyway, to get the principal branch in the microprocessor it's necessary to implement "atan2" that has a lot of special cases.

For example, IIRC ln( -inf.0 + y * i ) = ´+inf.0 + pi * sign(y)

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