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Fix jacobi svd for TriangularBase

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This commit is contained in:
Damiano Franzò
2025-10-08 00:41:26 +02:00
committed by Rasmus Munk Larsen
parent dbe9e6961e
commit 5bc944a3ef
2 changed files with 37 additions and 0 deletions
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18
test/jacobisvd.cpp
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@@ -94,6 +94,19 @@ void jacobisvd_verify_inputs(const MatrixType& input = MatrixType()) {
(int)ColPivHouseholderQRPreconditioner));
}
template <typename MatrixType>
void svd_triangular_matrix(const MatrixType& input = MatrixType()) {
MatrixType matrix(input.rows(), input.cols());
svd_fill_random(matrix);
// Make sure that we only consider the 'Lower' part of the matrix.
MatrixType matrix_self_adj = matrix.template selfadjointView<Lower>().toDenseMatrix();
JacobiSVD<MatrixType, ComputeFullV> svd_triangular(matrix.template selfadjointView<Lower>());
JacobiSVD<MatrixType, ComputeFullV> svd_full(matrix_self_adj);
VERIFY_IS_APPROX(svd_triangular.singularValues(), svd_full.singularValues());
}
namespace Foo {
// older compiler require a default constructor for Bar
// cf: https://stackoverflow.com/questions/7411515/
@@ -211,5 +224,10 @@ EIGEN_DECLARE_TEST(jacobisvd) {
CALL_SUBTEST_55(svd_underoverflow<void>());
// Check that the TriangularBase constructor works
CALL_SUBTEST_56((svd_triangular_matrix<Matrix3d>()));
CALL_SUBTEST_57((svd_triangular_matrix<Matrix4f>()));
CALL_SUBTEST_58((svd_triangular_matrix<Matrix<double, 10, 10>>()));
msvc_workaround();
}