Hi, I've released mpdecimal-2.5.0: http://www.bytereef.org/mpdecimal/index.html 15417edc8e12a57d1d9d75fa7e3f22b158a3b98f44db9d694cfd2acde8dfa0ca mpdecimal-2.5.0.tar.gz Starting with Python 3.9, this version should be used for an external libmpdec. Python versions 3.7 and 3.8 should use the previous version mpdecimal-2.4.2. libmpdec ======== libmpdec will continue to evolve conservatively. For the few changes, see: http://www.bytereef.org/mpdecimal/changelog.html libmpdec++ ========== mpdecimal now includes libmpdec++. libmpdec++ is a complete C++ implementation of the General Decimal Arithmetic Specification. http://www.bytereef.org/mpdecimal/doc/libmpdec++/index.html The library frees users from manual memory management and has an easy API with inline operators similar to the one in Python's decimal module. Like Python's decimal module, libmpdec++ has a thread local context for inline operators and other functions that use the implicit context. Depending on the compiler, the speed penalty for the C++ features compared to libmpdec is 4-10%. The best compiler I found is gcc (GCC) 9.2.1 20190827 (Red Hat 9.2.1-1), closely followed by the latest Intel compiler. Both produce the fastest libmpdec code and have a speed penalty for C++ of 4%. Like libmpdec, libmpdec++ has a large test suite. In addition to the mpdecimal tests, libmpdec++ has been tested by replacing all libmpdec functions in Python's decimal module with libmpdec++ functions. libmpdec++ passes both the Python test suite and deccheck.py. For a short libmpdec++ introduction, see: http://www.bytereef.org/mpdecimal/quickstart.html Stefan Krah