[GHC] #8532: Hyperbolic arc cosine fails on (-1) :: Complex r.

[GHC]

#8532: Hyperbolic arc cosine fails on (-1) :: Complex r.
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        Reporter:  leftaroundabout   |                Owner:  alekzcb
            Type:  bug               |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Core Libraries    |              Version:  7.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Incorrect result  |            Test Case:  acosh(-1) ::
  at runtime                         |  Complex Double
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Oh no! What are the symptoms? Feel free to drop by `#ghc` on
 `irc.freenode.net` if you want help.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8532#comment:10>
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