Fix undefined difference operation

filtering-library · Jul 22, 2019 · dc34369 · dc34369
1 parent de28c2e
commit dc34369
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/include/fl/distribution/gaussian.hpp b/include/fl/distribution/gaussian.hpp
@@ -461,10 +461,9 @@ class Gaussian
 
         if(has_full_rank())
         {
+            const Variate dx = vector - mean();
             return log_normalizer() - 0.5
-                    * (vector - mean()).transpose()
-                    * precision()
-                    * (vector - mean());
+                    * (dx.transpose() * precision() * dx)(0);
         }
 
         return -std::numeric_limits<Real>::infinity();