diff --git a/libs/geom/include/psemek/geom/math.hpp b/libs/geom/include/psemek/geom/math.hpp
index 8e3d832d..21066c2b 100644
--- a/libs/geom/include/psemek/geom/math.hpp
+++ b/libs/geom/include/psemek/geom/math.hpp
@@ -196,6 +196,17 @@ namespace psemek::geom
 		return false;
 	}
 
+	template <typename T>
+	bool compare_swap(T & min, T & max)
+	{
+		if (min > max)
+		{
+			std::swap(min, max);
+			return true;
+		}
+		return false;
+	}
+
 	template <typename T>
 	T smoothstep(T x)
 	{