http://d.puremagic.com/issues/show_bug.cgi?id=10145

           Summary: "real" datatype on x64 doesn't accurately represent a
                    floating point number
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: gooberman@gmail.com


--- Comment #0 from Ethan Watson <gooberman@gmail.com> 2013-05-23 03:30:56 PDT ---
When converting float variables to and from real variables, the actual value gets munged up in to something indecipherable. real values converted to strings print out wrong values, and converting them back to floats keep garbage values about.

I discovered this one when using std.json, which uses the real type to track floating point values rather than float/double. Currently working around it by making a copy of std.json, sticking it in another namespace, and replacing real with double.

Tested with latest beta.

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http://d.puremagic.com/issues/show_bug.cgi?id=10145


bearophile_hugs@eml.cc changed:

           What    |Removed                     |Added
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--- Comment #1 from bearophile_hugs@eml.cc 2013-05-23 04:15:13 PDT ---
I suggest to add a small test case that shows the problem.

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