relative uncertainty should be >= 0

lbl-anp · May 13, 2024 · 35931b7 · 35931b7
1 parent 03d6f5e
commit 35931b7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/becquerel/core/fitting.py b/becquerel/core/fitting.py
@@ -1100,7 +1100,7 @@ def param_rel_unc(self, param) -> float:
         Relative error of fit parameter `param`
         """
         if self.param_unc(param):
-            return self.param_unc(param) / self.param_val(param)
+            return self.param_unc(param) / np.abs(self.param_val(param))
         return None
 
     def param_val_and_unc(self, param: str) -> ufloat: