[tspiteri]

MPFR has some timing comparison on its page.

https://www.mpfr.org/mpfr-4.0.1/timings.html

Also, MPFR depends on GMP which has integers and rationals. Then there is MPC which in turn depends on MPFR and provides complex numbers.

https://www.multiprecision.org/mpc/

[adgjlsfhk1]

IMO, this highlights that you should pretty much always use Arb instead of MPFR if you have a choice.

[tspiteri]

Arb depends on MPFR, so it is not exactly "instead of".

https://arblib.org/setup.html#dependencies