On Tue, Jan 26, 2021 at 06:43:06PM -0500, Michael Meissner wrote: > I posted this patch on January 14th, 2021: > https://gcc.gnu.org/pipermail/gcc-patches/2021-January/563498.html > > | Date: Thu, 14 Jan 2021 12:09:36 -0500 > | Subject: [PATCH] PowerPC: Add float128/Decimal conversions. > | Message-ID: <20210114170936.ga3...@ibm-toto.the-meissners.org> > > You had a question about what changed, and I replied: > > | In your last message, you said that it was unacceptable that the conversion > | fails if the user uses an old GLIBC. So I rewrote the code using weak > | references. If the user has at least GLIBC 2.32, it will use the IEEE > 128-bit > | string support in the library. > | > | If an older GLIBC is used, I then use the IBM 128-bit format as an > intermediate > | value. Obviously there are cases where IEEE 128-bit can hold values that > IBM > | 128-bit can't (mostly due to the increased exponent range in IEEE 128-bit), > but > | it at least does the conversion for the numbers in the common range. > | > | In doing this transformation, I needed to do minor edits to the main decimal > | to/from binary conversion functions to allow the KF functions to be > declared. > | Previously, I used preprocessor magic to rename the functions. > > This is the second most important patch in the IEEE 128-bit work. What do I > need to do to be able to commit the patch?
The whole thread is at https://patchwork.ozlabs.org/project/gcc/patch/20201120000524.ga...@ibm-toto.the-meissners.org/ . I approved *that* version of the patch. Segher
