[GHC] #16216: readHexRational missing from Numeric

[GHC]

#16216: readHexRational missing from Numeric
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        Reporter:  merijn            |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  libraries/base    |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by merijn):

 As carter pointed out on IRC, (and asked me to echo here) this would also
 improve our IEEE754 compliance.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16216#comment:1>
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