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-rw-r--r--eigen/test/hessenberg.cpp62
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diff --git a/eigen/test/hessenberg.cpp b/eigen/test/hessenberg.cpp
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-// This file is part of Eigen, a lightweight C++ template library
-// for linear algebra.
-//
-// Copyright (C) 2009 Gael Guennebaud <gael.guennebaud@inria.fr>
-// Copyright (C) 2010 Jitse Niesen <jitse@maths.leeds.ac.uk>
-//
-// 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"
-#include <Eigen/Eigenvalues>
-
-template<typename Scalar,int Size> void hessenberg(int size = Size)
-{
- typedef Matrix<Scalar,Size,Size> MatrixType;
-
- // Test basic functionality: A = U H U* and H is Hessenberg
- for(int counter = 0; counter < g_repeat; ++counter) {
- MatrixType m = MatrixType::Random(size,size);
- HessenbergDecomposition<MatrixType> hess(m);
- MatrixType Q = hess.matrixQ();
- MatrixType H = hess.matrixH();
- VERIFY_IS_APPROX(m, Q * H * Q.adjoint());
- for(int row = 2; row < size; ++row) {
- for(int col = 0; col < row-1; ++col) {
- VERIFY(H(row,col) == (typename MatrixType::Scalar)0);
- }
- }
- }
-
- // Test whether compute() and constructor returns same result
- MatrixType A = MatrixType::Random(size, size);
- HessenbergDecomposition<MatrixType> cs1;
- cs1.compute(A);
- HessenbergDecomposition<MatrixType> cs2(A);
- VERIFY_IS_EQUAL(cs1.matrixH().eval(), cs2.matrixH().eval());
- MatrixType cs1Q = cs1.matrixQ();
- MatrixType cs2Q = cs2.matrixQ();
- VERIFY_IS_EQUAL(cs1Q, cs2Q);
-
- // Test assertions for when used uninitialized
- HessenbergDecomposition<MatrixType> hessUninitialized;
- VERIFY_RAISES_ASSERT( hessUninitialized.matrixH() );
- VERIFY_RAISES_ASSERT( hessUninitialized.matrixQ() );
- VERIFY_RAISES_ASSERT( hessUninitialized.householderCoefficients() );
- VERIFY_RAISES_ASSERT( hessUninitialized.packedMatrix() );
-
- // TODO: Add tests for packedMatrix() and householderCoefficients()
-}
-
-void test_hessenberg()
-{
- 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>(internal::random<int>(1,EIGEN_TEST_MAX_SIZE)) ));
- CALL_SUBTEST_5(( hessenberg<std::complex<double>,Dynamic>(internal::random<int>(1,EIGEN_TEST_MAX_SIZE)) ));
-
- // Test problem size constructors
- CALL_SUBTEST_6(HessenbergDecomposition<MatrixXf>(10));
-}