#15622: Generalize `E{0,1,2,3,6,9,12}` from `Data.Fixed` -------------------------------------+------------------------------------- Reporter: rockbmb | Owner: rockbmb Type: feature request | Status: new Priority: normal | Milestone: 8.6.1 Component: Core Libraries | Version: 8.4.3 Resolution: | Keywords: base, | Data.Fixed Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Bodigrim): `Compose` itself makes no difference, of course. The instance from your PR is equivalent to `resolution = (10 ^) . natVal . Compose`. My suggestion is to put `resolution = natVal . Compose`, which makes us able to express desired accuracy both in decimal (`E 1000`) and binary (`E 1024`) digits, as well as in any other base. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15622#comment:21 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler