[PATCH] D26817: [APFloat] Implement PPCDoubleDouble add and subtract.

[Tim Shen via llvm-commits]

timshen added a comment.

In https://reviews.llvm.org/D26817#600032, @hfinkel wrote:

> Can you please comment on how similar/different this algorithm is from the one in compiler-rt/lib/builtins/ppc/gcc_qadd.c (and other nearby files)?


I didn't look at compiler-rt/lib/builtins/ppc/gcc_qadd.c. These algorithms take time to reason able, so currently the only thing I know is that they are different :P. I chose libgcc's version, because it has a paper to refer to.


https://reviews.llvm.org/D26817