[Bug libgcc/64677] incorrect result with complex division?

pinskia at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Jan 20 19:07:00 GMT 2015


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64677

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Sanjay Patel from comment #5)
> (In reply to Mikhail Maltsev from comment #3)
> > So, compile-time result is more precise. BTW, what does the disassembly look
> > like?
> 
> In the -O0 case, it looks like all of the math is handled in:
>  	call	___ieee_divdc3


Is this the one in libgcc or part of Apple's libc?  If it is part of Apple's
libc, then the bug is there.  Apple's libc implementation of ___ieee_divdc3 has
known issues IIRC.


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