Merge branch 'ci' into 'master'

Add CI config

Closes #1

See merge request jfahl_01/pacxx-projectseminar-2019!1

.gitlab-ci.yml

+---
+include:
+  - "https://gitlab.dune-project.org/core/ci-config/raw/master/config/common/master.yml"
+  - "https://gitlab.dune-project.org/core/ci-config/raw/master/jobs/common/master.yml"
+
+before_script:
+  - . /duneci/bin/duneci-init-job
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-common.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-geometry.git
+  - duneci-install-module https://gitlab.dune-project.org/staging/dune-uggrid.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-grid.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-localfunctions.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-istl.git

src/gridoperator.hh

@@ -85,14 +85,14 @@ namespace PPS {
 
         // Volume integration
         Dune::Hybrid::ifElse
-          (std::bool_constant<LocalOperator::doAlphaVolume>{},
+          (std::integral_constant<bool, LocalOperator::doAlphaVolume>{},
            [&](auto id) {
              id(lop_).jacobian_volume(element, lb, xl, al);
            });
 
         // Skip if no intersection iterator is needed
         Dune::Hybrid::ifElse
-          (std::bool_constant<LocalOperator::doAlphaBoundary>{},
+          (std::integral_constant<bool, LocalOperator::doAlphaBoundary>{},
            [&](auto id) {
              // Traverse intersections
              for(const auto& intersection : intersections(gv_,element))
@@ -168,7 +168,7 @@ namespace PPS {
 
             // Boundary integration
             Dune::Hybrid::ifElse
-              (std::bool_constant<LocalOperator::doAlphaBoundary>{},
+              (std::integral_constant<bool, LocalOperator::doAlphaBoundary>{},
                [&](auto id) {
                  id(lop_).alpha_boundary(intersection, lb, xl, rl);
                });