Use const reference for norm parameter

def2eafc · vinciguerra_a · ae80f34f · def2eafc
Commit def2eafc authored 4 years ago by vinciguerra_a
--- a/src/Field/FieldOperations.hpp
+++ b/src/Field/FieldOperations.hpp
@@ -52,7 +52,7 @@ namespace ippl {
     * @return The desired norm of the field
     */
    template<typename T, unsigned Dim, class M, class C>
-    T norm(Field<T, Dim, M, C> field, int p = 2) {
+    T norm(const Field<T, Dim, M, C>& field, int p = 2) {
        T local = 0;
        const int shift = field.getNghost();
        auto view = field.getView();