[GHC] #3070: floor(0/0) should not be defined

[GHC]

#3070: floor(0/0) should not be defined
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  Reporter:  carette       |          Owner:  squadette       
      Type:  bug           |         Status:  new             
  Priority:  normal        |      Milestone:  6.12.2          
 Component:  Prelude       |        Version:  6.10.1          
Resolution:                |       Keywords:                  
Difficulty:  Unknown       |             Os:  Unknown/Multiple
  Testcase:                |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown  |  
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Comment (by carette):

 I don't think that exact patch is quite the way to go.  Actually, I think
 that decodeFloat should be fixed to throw an exception when encountering
 NaN or infinities -- that's much more compatible with IEEE 754-2008.
 Also, there should probably be an isFinite :: Double -> Bool function,
 which would help guard against 'weird' floats with one check, not two.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3070#comment:7>
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