iOS Multi-Precision or Arbitrary-Precision Arithmetic

[kingsapo]

Hi! So I'm developing an app that requires numbers longer than any standard data type provides, heard about multi-precision arithmetic, and decided I'd give that a try. While there are already a bunch of libraries out there, I have unsuccessfully attempted to implement them into Xcode. Can anyone point me in the direction of a library that would somewhat easily port to iPhone? Thanks!