[GHC] #14377: false result in the addition

[GHC]

#14377: false result in the addition
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           Reporter:  vanto          |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.2.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Incorrect result
  Unknown/Multiple                   |  at runtime
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 {{{
 Prelude> 1.1+2.2
 3.3000000000000003
 Prelude> 1.11+2.22
 3.33
 Prelude> 1.111+2.222
 3.333
 Prelude> 1.1111+2.2222
 3.3333
 Prelude> 1.11111+2.22222
 3.33333
 Prelude> 1.111111+2.222222
 3.3333329999999997
 Prelude> 1.1111111+2.2222222
 3.3333333
 Prelude> 1.11111111+2.22222222
 3.33333333
 Prelude> 1.111111111+2.222222222
 3.333333333
 Prelude> 1.1111111111+2.2222222222
 3.3333333333
 Prelude> 1.11111111111+2.22222222222
 3.33333333333
 Prelude> 1.111111111111+2.222222222222
 3.333333333333
 Prelude> 1.1111111111111+2.2222222222222
 3.3333333333333
 Prelude> 1.11111111111111+2.22222222222222
 3.3333333333333304
 Prelude> 1.111111111111111+2.222222222222222
 3.333333333333333
 }}}
 Given the other additions, three results can be improved.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14377>
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