[GHC] #5178: RULES "minusFloat x x" and "timesFloat 0.0 x" break IEEE-754 compatibility

[GHC]

#5178: RULES "minusFloat x x" and "timesFloat 0.0 x" break IEEE-754 compatibility
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    Reporter:  liyang            |       Owner:                             
        Type:  bug               |      Status:  new                        
    Priority:  normal            |   Component:  libraries/base             
     Version:  7.0.3             |    Keywords:                             
    Testcase:                    |   Blockedby:                             
          Os:  Unknown/Multiple  |    Blocking:                             
Architecture:  Unknown/Multiple  |     Failure:  Incorrect result at runtime
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Changes (by liyang):

 * cc: hackage.haskell.org@… (added)


Comment:

 I've uploaded a hackage for users who want these rules:
 http://hackage.haskell.org/package/fast-math

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5178#comment:1>
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