[GHC] #9530: min / max do not always return a NaN when one of the arguments is NaN

[GHC]

#9530: min / max do not always return a NaN when one of the arguments is NaN
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              Reporter:  jrp         |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Prelude     |          Version:  7.8.3
            Resolution:              |         Keywords:
      Operating System:  MacOS X     |     Architecture:  Unknown/Multiple
       Type of failure:  Incorrect   |       Difficulty:  Easy (less than 1
  result at runtime                  |  hour)
             Test Case:              |       Blocked By:
              Blocking:              |  Related Tickets:
Differential Revisions:              |
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Comment (by jrp):

 ... also signum NaN returns -1.0, rather than NaN

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9530#comment:1>
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