Reckoner: simple arbitrary arithmetic library

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This is a simple arbitrary arithmetic library that interoperates will all of Rust's primitive integer types ({u,i}{8,16,32,64,128}). I built it to learn how to use Rust's FFI mechanisms, specifically using bindgen and cc. @kornel's post on -sys libraries was very helpful.

Pros:

  • Easy to use
  • Has Integer and Rational types.
  • Wrapper over the imath library, can converts types to and from.

Cons:

  • heavy use of allocation, each Integer/Rational is allocated on the heap.
  • Performance is likely worse than crates such as rug, num-bigint, or ramp.
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