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Re: [Mingw-users] msvcrt printf bug




On  Sunday, January 15, 2017 4:59 PM, Keith Marshall wrote:
> On 15/01/17 21:24, John Brown wrote:
>> You have skillfully avoided addressing the fact that it works as the
> > original poster expects with glibc 2.2.5 (tested on Linux / glibc 2.19).

> And you've both dodged the utter irrelevance of the entire issue;
>>  the OP noted that the claimed "bug" is in MSVCRT.DLL, so completely
> beyond our power to do anything about it.  In reality, the issue
> boils down to unrealistic expectations regarding _reproducible_
> precision of floating point numbers: how can a representation with
> only 53 bits _exactly_ record any more than 15 decimal digits?  If
> differing output implementations produce differing rounding effects
> beyond 15 significant decimal digits, that's hardly a bug; it is,
> rather, a limitation of the underlying data representation.

Yes, you are right on all counts.

Regards,
John Brown.

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