BIGRAT
bigrat means computer code for rational numbers of arbitrary precision
("big" "rat"ional)
https://gmplib.org/
The GNU
Multiple Precision
Arithmetic Library
GMP is a free library for arbitrary precision arithmetic, operating on
signed integers, rational numbers, and floating-point numbers. There
is no practical limit to the precision except the ones implied by the
available memory in the machine GMP runs on. GMP has a rich set of
functions, and the functions have a regular interface.
GMP is used in pretty much everything!
