These packages are being developed to aid LUA programmers that need to use numbers bigger or with more precision than their operational system allows.
The BigNums pakage includes the structure and funcionality to manipulate Integers with arbitrary size. To view the index of functions available in this package and links to their description, click "BigNums" on the left.
The BigRats pakage includes the structure and funcionality to manipulate Rationals with arbitrary precision. It needs the former package, wich is used to manipulate the integers that represent the numerator and the denominator of the rational. To view the index of functions available in this package and links to their description, click "BigRats" on the left.
Download both packages here