if we had a cheap Float<->Word32, Double <-> Word64, could we define
#7858: Fix definitions of abs/signum for Floats/Doubles -------------------------------------+------------------------------------- Reporter: lerkok | Owner: Type: bug | Status: patch Priority: normal | Milestone: 7.10.1 Component: | Version: 7.6.3 libraries/base | Keywords: floating point Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: #9238 None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by rwbarton): Replying to [comment:8 carter]: these wrt the bit banging approach? In fact, can't we define those already using CMM (wrt the unlifted types)? Well, on x86, ideally we would use `andps`/`andpd` for `abs`, and stay within the SSE register set. I don't know what is the most efficient way to implement `signum`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7858#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler