#19 remove diffsl example

Author: martinjrobins

src/lib.rs

@@ -53,25 +53,10 @@
 //!
 //! DiffSL is a domain-specific language for specifying differential equations <https://github.com/martinjrobins/diffsl>. It uses the LLVM compiler framwork
 //! to compile the equations to efficient machine code and uses the EnzymeAD library to compute the jacobian. You can use DiffSL with DiffSol by enabling one of the `diffsl-llvm*` features
-//! corresponding to the version of LLVM you have installed.
+//! corresponding to the version of LLVM you have installed, and using the [OdeBuilder::build_diffsl] method.
 //!
 //! For more information on the DiffSL language, see the [DiffSL documentation](https://martinjrobins.github.io/diffsl/)
 //!
-//! ```rust
-//! #[cfg(feature = "diffsl-llvm14")]
-//! {
-//!     use diffsol::{OdeBuilder, Bdf, OdeSolverMethod};
-//!     let code = "
-//!         u { y = 1 }
-//!         F { -y }
-//!         out { y }
-//!     ";
-//!     let problem = OdeBuilder::new().build_diffsl(code).unwrap();
-//!     let mut solver = Bdf::default();
-//!     let _y = solver.solve(&problem, 1.0).unwrap();
-//! }
-//! ```
-//!
 //! ## Custom ODE problems
 //!
 //! The [OdeBuilder] struct can be used to create an ODE problem from a set of closures.

src/ode_solver/diffsl.rs

@@ -220,6 +220,19 @@ mod tests {
 
     use super::DiffSl;
 
+    #[test]
+    fn diffsl_expontential_decay() {
+        // TODO: put this example into the docs once https://github.com/rust-lang/cargo/pull/13490 makes it to stable
+        let code = "
+            u { y = 1 }
+            F { -y }
+            out { y }
+        ";
+        let problem = OdeBuilder::new().build_diffsl(code).unwrap();
+        let mut solver = Bdf::default();
+        let _y = solver.solve(&problem, 1.0).unwrap();
+    }
+
     #[test]
     fn diffsl_logistic_growth() {
         let text = "