tdk - The Decision Kit
The Decision Kit is a collection of data structures that are useful for representing functions, relations, and other combinatorial objects. These data structures are based on various generalizations of reduced ordered binary decision diagrams.
Tdk has no dependencies. To install the library, simply clone the repository, build it and install it using the following commands:
make && make install
Alternatively, you can install tdk using OPAM:
opam install tdk
For building and running the tests during development, you will need to install
oUnit package and reconfigure the build process to enable tests:
opam install oUnit ./configure --enable-tests make && make test
The library supports three data structures:
Vlr- a Variable-Lattice-Result diagram for representing functions over variables that are assigned values in a lattice, producing a result with an algebraic structure.
Vcr- a Variable-Constant-Result diagram for representing functions over variables that are assigned values in a total ordering, producing results with an algebraic structure.
Bdd- a Reduced Ordered Binary Decision Diagram for representing boolean-valued functions over boolean variables.
Each of these data structures is implemented as a functor. Here's an example of
how to instantiate and use the
Bdd functor for variables represented as
module B = Tdk.Bdd.Make(struct type t = Int32.t let compare = Int32.compare let hash a = Int32.to_int a let to_string = Int32.to_string end) let impl a b = B.(sum b (neg a)) let a = B.var 0l let b = B.var 1l let c = B.var 2l (* `(a /\ b) -> c) -> (a -> b -> c)` is a tautology *) assert B.(tautology (impl (impl (prod a b) c) (impl a (impl b c))))
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BSD3, see LICENSE file for its text.