diff --git a/sources/qet.cpp b/sources/qet.cpp
index 4ad78a60d..ff4f71ac5 100644
--- a/sources/qet.cpp
+++ b/sources/qet.cpp
@@ -497,6 +497,21 @@ QString QET::pointerString(void *ptr) {
 	);
 }
 
+/**
+	Round \a x to the nearest multiple of the invert of \a epsilon.
+	For instance, epsilon = 10 will round to 1/10 = 0.1
+*/
+qreal QET::round(qreal x, qreal epsilon) {
+	return(int(x * epsilon) / epsilon);
+}
+
+/**
+	Round the coordinates of \a p to the nearest multiple of \a epsilon.
+*/
+QPointF QET::roundPoint(const QPointF &p, qreal epsilon) {
+	return(QPointF(QET::round(p.x(), epsilon), QET::round(p.y(), epsilon)));
+}
+
 /**
 	@param angle Un angle quelconque
 	@return l'angle passe en parametre, mais ramene entre -360.0 + 360.0 degres
diff --git a/sources/qet.h b/sources/qet.h
index e98f3be17..743d73864 100644
--- a/sources/qet.h
+++ b/sources/qet.h
@@ -161,6 +161,8 @@ namespace QET {
 	QString diagramAreaToString(const QET::DiagramArea &);
 	QET::DiagramArea diagramAreaFromString(const QString &);
 	QString pointerString(void *);
+	qreal round(qreal, qreal);
+	QPointF roundPoint(const QPointF &, qreal);
 	qreal correctAngle(const qreal &);
 	bool compareCanonicalFilePaths(const QString &, const QString &);
 	QString titleBlockColumnLengthToString(const TitleBlockColumnLength  &);