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Re: output rounding bug in vasnprintf %e format implementation
From: |
Ben Pfaff |
Subject: |
Re: output rounding bug in vasnprintf %e format implementation |
Date: |
Sat, 19 Apr 2008 08:56:11 -0700 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux) |
Bruno Haible <address@hidden> writes:
> Ben Pfaff wrote:
>> [This issue arose in examination of bug 22924 against GNU PSPP,
>> which may be viewed at https://savannah.gnu.org/bugs/?22924.]
>>
>> The %e format implemented by gnulib's vasnprintf (when
>> NEED_PRINTF_DOUBLE is defined) does not round properly in all
>> cases. Here is one example: 999.95 printed with %.4e should
>> yield 9.9995e+02, but actually yields 1.0000e+03 with the gnulib
>> implementation.
>
> Thank you for reporting this. I'm committing the attached fix.
Thanks! Your solution is much better than mine.
--
Ben Pfaff
http://benpfaff.org