From 8147b5227c7401205dc214be5728b9bf69cec025 Mon Sep 17 00:00:00 2001
From: gituser789 <62549000+gituser789@users.noreply.github.com>
Date: Tue, 4 Aug 2026 09:28:09 +0200
Subject: [PATCH] avoid runtime warning during curve fit

---
 materialdatabase/processing/utils/empirical.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/materialdatabase/processing/utils/empirical.py b/materialdatabase/processing/utils/empirical.py
index b7cc1ec..52951d1 100644
--- a/materialdatabase/processing/utils/empirical.py
+++ b/materialdatabase/processing/utils/empirical.py
@@ -133,7 +133,11 @@ def log_enhanced_steinmetz_qT(fTb: tuple[float | np.ndarray, float | np.ndarray,
     :param c_2: Quadratic temperature coefficient
     :return: Logarithm of power loss density
     """
-    return np.log(enhanced_steinmetz_qT(fTb, alpha, beta, k_b, k_f, k_alpha2, c_0, c_1, c_2))
+    # avoid RunTime Warning during the scipy curve fit operation
+    with np.errstate(invalid='ignore'):
+        steinmetz_result = np.log(enhanced_steinmetz_qT(fTb, alpha, beta, k_b, k_f, k_alpha2, c_0, c_1, c_2))
+
+    return steinmetz_result
 
 
 def fit_mu_abs_TDK_MDT(