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

GHC ghc-devs at haskell.org
Mon Oct 23 09:24:01 UTC 2017


#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:                    |
-------------------------------------+-------------------------------------
Changes (by vanto):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 In this other example, you can see that the calculation results between
 OCaml and GHC occur for the same numbers. For me there is a relationship
 between these two systems. It is necessary to do another search to find it
 and thus to eliminate this miscalculation.\\

 {{{
 $ ocaml
         OCaml version 4.04.0

 # 16.0/.0.2;;
 - : float = 80.
 # 16.0/.0.02;;
 - : float = 800.
 # 16.0/.0.002;;
 - : float = 8000.
 # 16.0/.0.0002;;
 - : float = 80000.
 # 16.0/.0.00002;;
 - : float = 799999.99999999988
 # 16.0/.0.000002;;
 - : float = 8000000.
 # 16.0/.0.0000002;;
 - : float = 80000000.
 # 16.0/.0.00000002;;
 - : float = 800000000.
 # 16.0/.0.000000002;;
 - : float = 7999999999.999999
 # 16.0/.0.0000000002;;
 - : float = 80000000000.
 # 16.0/.0.00000000002;;
 - : float = 800000000000.
 # 16.0/.0.000000000002;;
 - : float = 8e+012
 # 16.0/.0.0000000000002;;
 - : float = 8e+013
 # 16.0/.0.00000000000002;;
 - : float = 8e+014
 # 16.0/.0.000000000000002;;
 - : float = 7999999999999999.
 # 16.0/.0.0000000000000002;;
 - : float = 8e+016
 # 16.0/.0.00000000000000002;;
 - : float = 8e+017
 # 16.0/.0.000000000000000002;;
 - : float = 7.999999999999999e+018
 # 16.0/.0.0000000000000000002;;
 - : float = 8e+019
 # 16.0/.0.00000000000000000002;;
 - : float = 8e+020
 #


 }}}
 Today I decided to close this ticket as invalid because I do not know what
 else to choose to close this ticket. But of course you can reopen it.
 Thank you for reading this.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14377#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler


More information about the ghc-tickets mailing list