From: Matthias Maier <tamiko@43-1.org>
Date: Sat, 11 May 2019 21:08:41 +0000 (-0500)
Subject: improve readability of assembly routine
X-Git-Tag: v9.1.0-rc1~48^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bff4d61499e86e37bf4f6b07113c921e0ac84538;p=dealii.git

improve readability of assembly routine
---

diff --git a/examples/step-6/step-6.cc b/examples/step-6/step-6.cc
index 583a8de938..7f7f9ee82c 100644
--- a/examples/step-6/step-6.cc
+++ b/examples/step-6/step-6.cc
@@ -299,11 +299,14 @@ void Step6<dim>::assemble_system()
             {
               for (unsigned int j = 0; j < dofs_per_cell; ++j)
                 cell_matrix(i, j) +=
-                  (current_coefficient * fe_values.shape_grad(i, q_index) *
-                   fe_values.shape_grad(j, q_index) * fe_values.JxW(q_index));
-
-              cell_rhs(i) += (fe_values.shape_value(i, q_index) * 1.0 *
-                              fe_values.JxW(q_index));
+                  (current_coefficient *              // a(x_q)
+                   fe_values.shape_grad(i, q_index) * // grad phi_j(x_q)
+                   fe_values.shape_grad(j, q_index) * // grad phi_i(x_q)
+                   fe_values.JxW(q_index));           // dx
+
+              cell_rhs(i) += (1.0 *                               //
+                              fe_values.shape_value(i, q_index) * // phi_i(x_q)
+                              fe_values.JxW(q_index));            // dx
             }
         }