It looks like no more out of range for floating point on MSVC2010 :)
Need to check it with latest gcc. Will try it soon.
2012/9/25 Pawel Aleksander Fedorynski <[email protected]>
>
> I'm aware of the existence of floating point infinity, but I doubt that it
> is a correct behavior for istringstream to read inf from a string
> containing a number our of range.
>
> Thanks,
>
> Aleksander
>
>
> On Tue, Sep 25, 2012 at 12:32 PM, Sergei Nikulov <[email protected]
> > wrote:
>
>>
>>
>> Here the some information on this matter
>>
>> http://stackoverflow.com/questions/11299992/divide-by-zero-prevention
>>
>> http://stackoverflow.com/questions/7267838/division-by-zero-does-not-throw-sigfpe
>>
>>
>>
>>
>> 2012/9/25 Pawel Aleksander Fedorynski <[email protected]>
>>
>>>
>>> Hi Sergei,
>>>
>>> I'll try to confirm whether it's a bug in MSVC or an
>>> implementation-defined behavior, but in any case, seems to me that the
>>> correct behavior is not to put infinity in the variable in such case. We
>>> should check for infinity (and probably also NaN for good measure) in
>>> parse_num in src/backends/mysql/common.h and thow an exception if we see it
>>> as a conversion result.
>>>
>>> I'm going to wait a couple of days to see if anyone objects and then
>>> I'll make this change.
>>>
>>> Thanks,
>>>
>>> Aleksander
>>>
>>> On Tue, Sep 25, 2012 at 8:36 AM, Sergei Nikulov <
>>> [email protected]> wrote:
>>>
>>>> Hi All,
>>>>
>>>> I'm plaing with MySQL backend for a while and found that following
>>>> test case is failed for Windows7+MSVC2010+MySQL 5.5.27
>>>>
>>>>
>>>> test_num<double>("99999999999999999999999912222222222222222222222222223"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333"
>>>>
>>>> "9999999999999999999999991222222222222222222222222222333333333333",
>>>> false, 0);
>>>>
>>>>
>>>> This conversion yelds positive infinity value.
>>>>
>>>> Test case actually failed with one reason - conversion to double from
>>>> this string does not throw exception but return 1.INF0000.
>>>>
>>>> So my question as follows - what is better way to solve this?
>>>>
>>>> Should SOCI throw exception in case of
>>>> numeric_limits<double>::infinity() or we should just update test case
>>>> to handle this situation?
>>>>
>>>> Thank you.
>>>>
>>>> --
>>>> Best Regards,
>>>> Sergey Nikulov
>>>>
>>>>
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>>>
>>>
>>>
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>>
>>
>> --
>> Best Regards,
>> Sergey Nikulov
>>
>>
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>
>
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--
Best Regards,
Sergey Nikulov
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