Fix Dekker multiplication for subnormals/overflow and add exhaustive tests

JuliaMath / DoubleDouble.jl

Extended precision arithmetic for Julia (deprecated)

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Fix Dekker multiplication for subnormals/overflow and add exhaustive tests #32

Open timholy opened 7 years ago

timholy commented 7 years ago

The main virtue of this PR is that it adds exhaustive tests of Float16. These might be useful even after switching to an fma-based algorithm. They take too long to run by default, but it seems useful to have them. I will have a similar PR for Base's TwicePrecision utilities, but no reason not to also have them here.

Built on top of #31.

timholy commented 7 years ago

Didn't realize how many julia versions this still supports. If you want to continue to do so, I will need to revise this. Alternatively we could bump the requirement.

dpsanders commented 7 years ago

I would say that we should bump the requirement.