diff --git a/libs/geom/include/psemek/geom/math.hpp b/libs/geom/include/psemek/geom/math.hpp
index 56aab707..89855458 100644
--- a/libs/geom/include/psemek/geom/math.hpp
+++ b/libs/geom/include/psemek/geom/math.hpp
@@ -171,4 +171,26 @@ namespace psemek::geom
 		return (x / y) + ((x % y) == 0 ? 0 : 1);
 	}
 
+	template <typename T>
+	bool make_min(T & target, T const & source)
+	{
+		if (target > source)
+		{
+			target = source;
+			return true;
+		}
+		return false;
+	}
+
+	template <typename T>
+	bool make_max(T & target, T const & source)
+	{
+		if (target < source)
+		{
+			target = source;
+			return true;
+		}
+		return false;
+	}
+
 }