[GHC] #9936: Data.Fixed truncates 5.17 to 5.16

[GHC]

#9936: Data.Fixed truncates 5.17 to 5.16
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        Reporter:  singpolyma        |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  libraries/base    |              Version:  7.6.3
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9231, #9240      |  Differential Rev(s):  Phab:D1693
       Wiki Page:                    |
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Comment (by Yance):

 I tried my luck with this one as my first contribution, and I get the same
 result as the comment right above me. I tried changing the way read works
 on fixed size floats, but there are a couple of tests that enforce for
 example read "38.009" :: Centi == 38.00, while I would find 38.01 to be a
 more reasonable answer. I couldn't find anything about this in the Haskell
 2010 report, so my question is: Would it be possible to change this
 specification? Would it be desirable?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9936#comment:11>
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