On Fri, Sep 28, 2012 at 8:31 AM, Pawel Aleksander Fedorynski <
[email protected]> wrote:
>
>
> On Fri, Sep 28, 2012 at 1:01 AM, Mateusz Loskot <[email protected]>wrote:
>
>> On 27 September 2012 17:19, Vadim Zeitlin <[email protected]> wrote:
>> > On Thu, 27 Sep 2012 19:50:08 +0400 Sergei Nikulov <
>> [email protected]> wrote:
>> >
>> > SN> So it can be MSVS2010 issue.
>> >
>> > Microsoft CRT has known issues with converting NaNs and infinities
>> to/from
>> > strings and behaves differently from most (all?) Unix libc
>> implementations,
>> > so I'm almost sure it is indeed MSVS-specific. However you can't change
>> its
>> > CRT behaviour so this still needs to be worked around somehow.
>>
>> Textual representation of NaN value and features like strtod("NAN")
>> are specified by C99 standard. Visual C++ does not implement C99.
>>
>
> But that's not what we're talking about here. What Sergei reported is
> that MSVC sees a very long number (longer than a double can store) in
> std::istringstream's underlying buffer, tries to read a double from this
> stream, and instead of putting the stream in failed state puts inf in the
> double. I.e., something like
>
> double x;
> std::istringstream
> iss("99999999999999999999999912222222222222222222222222223"
>
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
> "9999999999999999999999991222222222222222222222222222333333333333"
>
> "9999999999999999999999991222222222222222222222222222333333333333");
> iss >> x;
>
> With gcc iss.fail() is true after this operation, with MSVC apparently it
> contains infinity.
>
I mean, x contains infinity.
>
> Thanks,
>
> Aleksander
>
>
>> > SN> Can anybody confirm?
>>
>> I don't have MySQL installed, so I can't test it.
>> But PostgreSQL and SQLite3 tests work for me.
>>
>> Best regards,
>> --
>> Mateusz Loskot, http://mateusz.loskot.net
>>
>>
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://ad.doubleclick.net/clk;258768047;13503038;j?
>> http://info.appdynamics.com/FreeJavaPerformanceDownload.html
>> _______________________________________________
>> Soci-users mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/soci-users
>>
>
>
------------------------------------------------------------------------------
Got visibility?
Most devs has no idea what their production app looks like.
Find out how fast your code is with AppDynamics Lite.
http://ad.doubleclick.net/clk;262219671;13503038;y?
http://info.appdynamics.com/FreeJavaPerformanceDownload.html
_______________________________________________
Soci-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/soci-users
