This is the artifact for Bean, a prototype implementation of the type system and floating-point error analysis tool described in the paper Bean: A Language for Backward Error Analysis.
The type checker is based on the implementation due to Arthur Azevedo de Amorim and co-authors [1].
[1] Arthur Azevedo de Amorim, Marco Gaboardi, Emilio Jesús Gallego Arias, and Justin Hsu. 2014. Really Natural Linear Indexed Type Checking. In Proceedings of the 26nd 2014 International Symposium on Implementation and Application of Functional Languages (IFL '14). Association for Computing Machinery, New York, NY, USA, Article 5, 1–12. https://doi.org/10.1145/2746325.2746335
You need ocaml plus dune and menhir.
You can obtain everything using the command
opam install --deps-only -d -t .
Build via dune:
dune build
Type check an example in the examples directory with the following command.
dune exec -- bean examples/EXAMPLE.be