diff --git a/libs/main/math/pimathbase.h b/libs/main/math/pimathbase.h
index 6d5b9169..02ba01a3 100644
--- a/libs/main/math/pimathbase.h
+++ b/libs/main/math/pimathbase.h
@@ -157,6 +157,34 @@ inline PIVector<T> piAbs(const PIVector<T> & v) {
 }
 
 
+template<typename T>
+void normalizeAngleDeg360(T & a) {
+	while (a < 0.)
+		a += 360.;
+	while (a > 360.)
+		a -= 360.;
+}
+template<typename T>
+double normalizedAngleDeg360(T a) {
+	normalizeAngleDeg360(a);
+	return a;
+}
+
+
+template<typename T>
+void normalizeAngleDeg180(T & a) {
+	while (a < -180.)
+		a += 360.;
+	while (a > 180.)
+		a -= 360.;
+}
+template<typename T>
+double normalizedAngleDeg180(T a) {
+	normalizeAngleDeg180(a);
+	return a;
+}
+
+
 template<typename T>
 bool OLS_Linear(const PIVector<PIPair<T, T>> & input, T * out_a, T * out_b) {
 	static_assert(std::is_arithmetic<T>::value, "Type must be arithmetic");