From fc47cd4d9966e12bb3ef4d0e03f1852e3a841a01 Mon Sep 17 00:00:00 2001
From: Melvin Alvarez <melvincaradu@orange.fr>
Date: Fri, 23 Jan 2026 18:41:29 +0100
Subject: [PATCH] fix(optimal_control): type annotation in ou_estimator test

- Add explicit f64 type to dt variable to fix ambiguous sqrt() call
- Kalman filter tests passing successfully
---
 src/optimal_control/ou_estimator.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/optimal_control/ou_estimator.rs b/src/optimal_control/ou_estimator.rs
index 3b46da7..d3f3b9b 100644
--- a/src/optimal_control/ou_estimator.rs
+++ b/src/optimal_control/ou_estimator.rs
@@ -196,7 +196,7 @@ mod tests {
         let true_kappa = 0.5;
         let true_theta = 0.0;
         let true_sigma = 0.2;
-        let dt = 1.0 / 252.0;
+        let dt: f64 = 1.0 / 252.0;
         let n = 500;
         
         let mut rng = thread_rng();