more clippy fixes

- Minor clippy fixes in opengen
- preparing version 0.9.6 (update changelog)

Author: alphaville

open-codegen/CHANGELOG.md

@@ -7,7 +7,16 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 Note: This is the Changelog file of `opengen` - the Python interface of OpEn
 
-## [0.9.5] - Unreleased
+
+## [0.9.6] - 2026-03-14
+
+### Fixed
+
+- Clippy fixes (minor)
+
+
+
+## [0.9.5] - 2026-03-12
 
 ### Changed 
 
@@ -246,6 +255,8 @@ Note: This is the Changelog file of `opengen` - the Python interface of OpEn
 * Fixed `lbfgs` typo
 
 
+[0.9.5]: https://github.com/alphaville/optimization-engine/compare/opengen-0.9.5...opengen-0.9.6
+[0.9.5]: https://github.com/alphaville/optimization-engine/compare/opengen-0.9.4...opengen-0.9.5
 [0.9.4]: https://github.com/alphaville/optimization-engine/compare/opengen-0.9.3...opengen-0.9.4
 [0.9.3]: https://github.com/alphaville/optimization-engine/compare/opengen-0.9.2...opengen-0.9.3
 [0.9.2]: https://github.com/alphaville/optimization-engine/compare/opengen-0.9.1...opengen-0.9.2

open-codegen/opengen/templates/c/optimizer_cinterface.rs.jinja

@@ -75,8 +75,8 @@ pub extern "C" fn {{meta.optimizer_name|lower}}_new() -> *mut {{meta.optimizer_n
 }
 
 /// Solve the parametric optimization problem for a given parameter
-/// .
-/// .
+///
+///
 /// # Arguments:
 /// - `instance`: re-useable instance of AlmCache, which should be created using
 ///   `{{meta.optimizer_name|lower}}_new` (and should be destroyed once it is not
@@ -89,15 +89,15 @@ pub extern "C" fn {{meta.optimizer_name|lower}}_new() -> *mut {{meta.optimizer_n
 ///   be used; length: `{{meta.optimizer_name|upper}}_N1`)
 /// - `c0`: Initial penalty parameter (provide `0` to use the default initial
 ///   penalty parameter
-/// .
-/// .
+///
+///
 /// # Returns:
 /// Instance of `{{meta.optimizer_name}}SolverStatus`, with the solver status
 /// (e.g., number of inner/outer iterations, measures of accuracy, solver time,
 /// and the array of Lagrange multipliers at the solution).
-/// .
-/// .
-/// .
+///
+///
+///
 /// # Safety
 /// All arguments must have been properly initialised
 #[no_mangle]
@@ -118,13 +118,13 @@ pub unsafe extern "C" fn {{meta.optimizer_name|lower}}_solve(
     // "*mut c_double" to "&mut [f64]"
     let u : &mut [f64] = {
         assert!(!u.is_null());
-        std::slice::from_raw_parts_mut(u as *mut f64, {{meta.optimizer_name|upper}}_NUM_DECISION_VARIABLES)
+        std::slice::from_raw_parts_mut(u, {{meta.optimizer_name|upper}}_NUM_DECISION_VARIABLES)
     };
 
     // "*const c_double" to "&[f64]"
     let params : &[f64] = {
         assert!(!params.is_null());
-        std::slice::from_raw_parts(params as *const f64, {{meta.optimizer_name|upper}}_NUM_PARAMETERS)
+        std::slice::from_raw_parts(params, {{meta.optimizer_name|upper}}_NUM_PARAMETERS)
     };
 
     let c0_option: Option<f64> = if c0.is_null() {