[GHC] #14377: some results not expected with the addition

[GHC]

#14377: some results not expected with the addition
-------------------------------------+-------------------------------------
        Reporter:  vanto             |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:  invalid           |             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:                    |
-------------------------------------+-------------------------------------

Comment (by svenpanne):

 Replying to [comment:7 vanto]:
 > It has nothing to do with what you say otherwise why other languages
 give correct results and not GHC? [...]

 Within `Double`'s precision, all the results are correct. They might not
 be ''minimal'' in the sense that they output the minimum number of
 characters necessary, but they are nevertheless correct: The Haskell
 Report doesn't require minimality AFAICT.

 If we wanted such minimality, this would be a feature request, not a bug
 report. One would have to make detailed performance measurements for such
 a change: It's easy to get more than an order of magnitude slower here,
 which might be a deal-breaker for lots of people.

 I propose you google for "What Every Computer Scientist Should Know About
 Floating-Point Arithmetic" and/or have a look at the papers and blogs
 mentioned in the previous Stack Exchange link.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14377#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler