Squashed 'third_party/eigen/' content from commit 61d72f6
Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/test/nesting_ops.cpp b/test/nesting_ops.cpp
new file mode 100644
index 0000000..1e85232
--- /dev/null
+++ b/test/nesting_ops.cpp
@@ -0,0 +1,33 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2010 Hauke Heibel <hauke.heibel@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include "main.h"
+
+template <typename MatrixType> void run_nesting_ops(const MatrixType& _m)
+{
+ typename MatrixType::Nested m(_m);
+
+ // Make really sure that we are in debug mode!
+ VERIFY_RAISES_ASSERT(eigen_assert(false));
+
+ // The only intention of these tests is to ensure that this code does
+ // not trigger any asserts or segmentation faults... more to come.
+ VERIFY_IS_APPROX( (m.transpose() * m).diagonal().sum(), (m.transpose() * m).diagonal().sum() );
+ VERIFY_IS_APPROX( (m.transpose() * m).diagonal().array().abs().sum(), (m.transpose() * m).diagonal().array().abs().sum() );
+
+ VERIFY_IS_APPROX( (m.transpose() * m).array().abs().sum(), (m.transpose() * m).array().abs().sum() );
+}
+
+void test_nesting_ops()
+{
+ CALL_SUBTEST_1(run_nesting_ops(MatrixXf::Random(25,25)));
+ CALL_SUBTEST_2(run_nesting_ops(MatrixXd::Random(25,25)));
+ CALL_SUBTEST_3(run_nesting_ops(Matrix4f::Random()));
+ CALL_SUBTEST_4(run_nesting_ops(Matrix4d::Random()));
+}