From c83334e68e80d689478e44cc99d574b127956942 Mon Sep 17 00:00:00 2001
From: Daniel Garcia-Sanchez <daniel.garcia-sanchez@insp.upmc.fr>
Date: Sat, 22 Jun 2019 11:14:34 +0200
Subject: [PATCH] Add test for std::complex cross_product_3d

---
 tests/tensors/tensor_complex_02.cc            | 54 +++++++++++++++++++
 ...r_complex_02.with_complex_values=on.output |  4 ++
 2 files changed, 58 insertions(+)
 create mode 100644 tests/tensors/tensor_complex_02.cc
 create mode 100644 tests/tensors/tensor_complex_02.with_complex_values=on.output

diff --git a/tests/tensors/tensor_complex_02.cc b/tests/tensors/tensor_complex_02.cc
new file mode 100644
index 0000000000..b016a42052
--- /dev/null
+++ b/tests/tensors/tensor_complex_02.cc
@@ -0,0 +1,54 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 1998 - 2018 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE.md at
+// the top level directory of deal.II.
+//
+// ---------------------------------------------------------------------
+
+
+// Based on tensor_complex.cc. It tests cross_product_3d when one tensor is
+// std::complex<double> and the other is double.
+
+#include <deal.II/base/tensor.h>
+
+#include <deal.II/lac/vector.h>
+
+#include <complex>
+
+#include "../tests.h"
+
+int
+main()
+{
+  initlog();
+  deallog << std::setprecision(3);
+
+  deallog.push("Cross product");
+  Tensor<1, 3, std::complex<double>> e1;
+  Tensor<1, 3, double>               e2;
+  Tensor<1, 3, std::complex<double>> e3;
+  e1[0]                                     = std::complex<double>(1., 1.);
+  e2[1]                                     = 1.;
+  e3[2]                                     = std::complex<double>(1., -1.);
+  Tensor<1, 3, std::complex<double>> result = cross_product_3d(e1, e2);
+  deallog << '\t' << result[0] << '\t' << result[1] << '\t' << result[2]
+          << std::endl;
+
+  result = cross_product_3d(e2, e3);
+  deallog << '\t' << result[0] << '\t' << result[1] << '\t' << result[2]
+          << std::endl;
+
+  result = cross_product_3d(e3, e1);
+  deallog << '\t' << result[0] << '\t' << result[1] << '\t' << result[2]
+          << std::endl;
+
+  deallog.pop();
+}
diff --git a/tests/tensors/tensor_complex_02.with_complex_values=on.output b/tests/tensors/tensor_complex_02.with_complex_values=on.output
new file mode 100644
index 0000000000..a979447ec6
--- /dev/null
+++ b/tests/tensors/tensor_complex_02.with_complex_values=on.output
@@ -0,0 +1,4 @@
+
+DEAL:Cross product::	(0.00,0.00)	(0.00,0.00)	(1.00,1.00)
+DEAL:Cross product::	(1.00,-1.00)	(0.00,0.00)	(0.00,0.00)
+DEAL:Cross product::	(0.00,0.00)	(2.00,0.00)	(0.00,0.00)
-- 
2.39.5