#16036: expDouble## 0.0## doesn't get complied into 1.0## -------------------------------------+------------------------------------- Reporter: Fuuzetsu | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: 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 simonpj):
Maybe expDouble## <literal>## should always evaluate at compile time to not block further constant folding?
Yes that'd be easy to do via a rewrite rule. (See `prelude/PrelRules.hs`.) But whenever floating-point is in the picture I always worry about maintaining floating-point semantics. So someone fp- savvy should execute on this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16036#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler