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      1 // This file is part of Eigen, a lightweight C++ template library
      2 // for linear algebra.
      3 //
      4 // Copyright (C) 2010 Hauke Heibel <hauke.heibel (at) gmail.com>
      5 //
      6 // This Source Code Form is subject to the terms of the Mozilla
      7 // Public License v. 2.0. If a copy of the MPL was not distributed
      8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
      9 
     10 #include "main.h"
     11 
     12 template <typename MatrixType> void run_nesting_ops(const MatrixType& _m)
     13 {
     14   typename MatrixType::Nested m(_m);
     15 
     16   // Make really sure that we are in debug mode!
     17   VERIFY_RAISES_ASSERT(eigen_assert(false));
     18 
     19   // The only intention of these tests is to ensure that this code does
     20   // not trigger any asserts or segmentation faults... more to come.
     21   VERIFY_IS_APPROX( (m.transpose() * m).diagonal().sum(), (m.transpose() * m).diagonal().sum() );
     22   VERIFY_IS_APPROX( (m.transpose() * m).diagonal().array().abs().sum(), (m.transpose() * m).diagonal().array().abs().sum() );
     23 
     24   VERIFY_IS_APPROX( (m.transpose() * m).array().abs().sum(), (m.transpose() * m).array().abs().sum() );
     25 }
     26 
     27 void test_nesting_ops()
     28 {
     29   CALL_SUBTEST_1(run_nesting_ops(MatrixXf::Random(25,25)));
     30   CALL_SUBTEST_2(run_nesting_ops(MatrixXd::Random(25,25)));
     31   CALL_SUBTEST_3(run_nesting_ops(Matrix4f::Random()));
     32   CALL_SUBTEST_4(run_nesting_ops(Matrix4d::Random()));
     33 }
     34