On Mon, May 13, 2024 at 9:44 AM Matt Borland wrote:
For the past year Chris Kormanyos and I have been working on a new library to implement IEEE 754 decimal floating point types.
The library provides types decimal32, decimal64, and decimal128 as specified in IEEE 754 and STL-like functionality.
Matt, do we have benchmarks comparing yours to the decimal64 implementation in GCC? i.e. The C++ std::decimal::decimal64 in <decimal/decimal> as well as the C _Decimal64 (https://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html) Those are backed by Intel's BID library. Your implementation of decimal64 also stores a uint64_t of the IEEE 754 Decimal64 (presumably BID not DPD) format, correct? This also means that on every operation you have to decode significand, exponent, sign out of this - which isn't trivial given the format. Glen