On Fri, Jan 15, 2021 at 03:52:44PM -0600, Segher Boessenkool wrote: > On Thu, Jan 14, 2021 at 12:09:36PM -0500, Michael Meissner wrote: > > [PATCH] PowerPC: Add float128/Decimal conversions. > > Same question here.
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. -- Michael Meissner, IBM IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
