From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 28 Jan 2021 17:19:07 +0000 (-0700)
Subject: Pass 'const double' objects by-value, rather than by-reference.
X-Git-Tag: v9.3.0-rc1~549^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F11646%2Fhead;p=dealii.git

Pass 'const double' objects by-value, rather than by-reference.
---

diff --git a/include/deal.II/fe/fe_point_evaluation.h b/include/deal.II/fe/fe_point_evaluation.h
index ee1f544bae..b902873f6d 100644
--- a/include/deal.II/fe/fe_point_evaluation.h
+++ b/include/deal.II/fe/fe_point_evaluation.h
@@ -48,7 +48,7 @@ namespace internal
       using gradient_type = Tensor<1, n_components, Tensor<1, dim>>;
 
       static void
-      read_value(const double &     vector_entry,
+      read_value(const double       vector_entry,
                  const unsigned int component,
                  value_type &       result)
       {
@@ -128,7 +128,7 @@ namespace internal
       using gradient_type = Tensor<1, dim>;
 
       static void
-      read_value(const double &vector_entry,
+      read_value(const double vector_entry,
                  const unsigned int,
                  value_type &result)
       {
@@ -198,7 +198,7 @@ namespace internal
       using gradient_type = Tensor<2, dim>;
 
       static void
-      read_value(const double &     vector_entry,
+      read_value(const double       vector_entry,
                  const unsigned int component,
                  value_type &       result)
       {
@@ -283,7 +283,7 @@ namespace internal
       using gradient_type = Tensor<1, 1>;
 
       static void
-      read_value(const double &vector_entry,
+      read_value(const double vector_entry,
                  const unsigned int,
                  value_type &result)
       {