[GHC] #7858: Fix definitions of abs/signum for Floats/Doubles

[GHC]

#7858: Fix definitions of abs/signum for Floats/Doubles
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        Reporter:  lerkok            |                Owner:  bernalex
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  7.10.1
       Component:  libraries/base    |              Version:  7.6.3
      Resolution:  fixed             |             Keywords:  floating
                                     |  point
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9238, #13212     |  Differential Rev(s):  Phab:D145
       Wiki Page:                    |
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Changes (by rwbarton):

 * related:  #9238 => #9238, #13212


Comment:

 Ticket for adding a faster `abs` implementation is #13212.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7858#comment:16>
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