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[Bug math/14343] Function logb() in math.h produces incorrect results for small inputs


http://sourceware.org/bugzilla/show_bug.cgi?id=14343

--- Comment #3 from Andre Kessler <akessler at mit dot edu> 2012-07-24 08:10:56 UTC ---
(In reply to comment #2)
> Do you need a fix for this on the 2.15 stable branch?
> 
> Is it enough that 2.16 has the fix?
> 
> If you are compiling glibc yourself you can upgrade to 2.16.

For some computers I use, it's fine that 2.16 has the fix, but I also have to
deal with some enterprise machines that will be using glibc 2.15 for quite a
while (the bug was discovered while testing some internal math libraries on
these machines). Since this problem is quite widespread -- anyone with 64-bit
glibc 2.15 will have an issue -- and this affects basic math functionality,
there really should be a fix on the 2.15 stable branch...

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