This is *so cool*. One question - why did you go with something that modifies the Core instead of rewriting the original source a la Alan Zimmerman's work? Is it because the stable forms are sometimes gnarly looking?

Thanks for making and sharing this!

On Tue, Sep 22, 2015 at 10:17 AM, Mike Izbicki <mike@izbicki.me> wrote:

80% of packages in stackage that contain floating point expressions
have numerically unstable expressions. The Herbie GHC plugin
automatically makes these expressions numerically stable.

You can find the project on github at:
https://github.com/mikeizbicki/HerbiePlugin
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Chris Allen

Currently working on http://haskellbook.com