Description:

The gmp package contains GNU MP, a library for arbitrary precision
arithmetic, signed integers operations, rational numbers and
floating point numbers. GNU MP is designed for speed, for both
small and very large operands. GNU MP is fast for several reasons:
It uses fullwords as the basic arithmetic type, it uses fast
algorithms, it carefully optimizes assembly code for many CPUs'
most common inner loops and it generally emphasizes speed over
simplicity/elegance in its operations.

Install the gmp package if you need a fast arbitrary precision
library.