fix #75, and add a basic unit test for Hessenberg

(it was indirectly tested by the eigenvalue decomposition)

1 files changed, 46 insertions, 0 deletions

diff --git a/test/hessenberg.cpp b/test/hessenberg.cpp
new file mode 100644
index 000000000..d917be357
--- /dev/null
+++ b/test/hessenberg.cpp
@@ -0,0 +1,46 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can 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 3 of the License, or (at your option) any later version.
+//
+// Alternatively, you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#include "main.h"
+#include <Eigen/Eigenvalues>
+
+template<typename Scalar,int Size> void hessenberg(int size = Size)
+{
+  typedef Matrix<Scalar,Size,Size> MatrixType;
+  MatrixType m = MatrixType::Random(size,size);
+  HessenbergDecomposition<MatrixType> hess(m);
+
+  VERIFY_IS_APPROX(m, hess.matrixQ() * hess.matrixH() * hess.matrixQ().adjoint());
+}
+
+void test_hessenberg()
+{
+  for(int i = 0; i < g_repeat; i++) {
+    CALL_SUBTEST_1(( hessenberg<std::complex<double>,1>() ));
+    CALL_SUBTEST_2(( hessenberg<std::complex<double>,2>() ));
+    CALL_SUBTEST_3(( hessenberg<std::complex<float>,4>() ));
+    CALL_SUBTEST_4(( hessenberg<float,Dynamic>(ei_random<int>(1,320)) ));
+    CALL_SUBTEST_5(( hessenberg<std::complex<double>,Dynamic>(ei_random<int>(1,320)) ));
+  }
+}