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Using Diffsol from other languages

Diffsol is a Rust library, but it can be used from other languages through various means. Three aspects that enable the portability of Diffsol are:

  • The diffsol-c crate: A companion crate providing a dynamic dispatch API and a C FFI that allows Diffsol to be called from C, Python (via cffi/ctypes), and other languages with C bindings. Runtime configuration enums let you choose the solver method, matrix backend, scalar type, and linear solver without compile-time generic types.
  • The DiffSL DSL: The DiffSL Domain Specific Language (DSL) allows users to specify ODEs, DAEs, and discretised PDEs in a way that is independent of the Rust language, but still can be JIT compiled to efficient native code.
  • WebAssembly: As with many Rust libraries, Diffsol can be easily compiled to WebAssembly (Wasm), allowing it to be used in web applications or other environments that support Wasm.

Note that a limitation is that these two aspects are not yet compatible with each other. DiffSL is the only part of Diffsol that is not yet available in WebAssembly, due to the complexity of compiling LLVM or Cranelift to Wasm. However, this is a planned feature for the future.