Are Float and Double instances of Fractional?

Question

If I enter ":i Double" or ":i Float" in ghci, it says that Double and Float are instances of Fractional. But in the Haskell docs it says that they aren't. So are they or not? http://hackage.haskell.org/package/base-4.9.1.0/docs/Prelude.html#t:Fractional

Answer 1

• Double and Float are a part of RealFloat,
  • which extends RealFrac and Floating;
    • both of which extend Fractional.