#2271: floor, ceiling, round :: Double -> Int are awesomely slow
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Reporter: dons | Owner: daniel.is.fischer
Type: bug | Status: patch
Priority: low | Milestone: 7.0.1
Component: libraries/base | Version: 7.1
Keywords: performance, math, double | Testcase:
Blockedby: | Difficulty: Unknown
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Changes (by daniel.is.fischer):
* status: new => patch
Comment:
Works now :)
Please test on 64 bits to make sure I haven't bungled the CPP stuff.
I also have a lot of rewrite rules for !IntN and !WordN, but I'm not sure
where to put them.
Probably GHC.Int and GHC.Word, but we'd have to import GHC.Float and
perhaps GHC.Float.RealFracMethods then.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2271#comment:16>
GHC <http://www.haskell.org/ghc/>
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