Public bug reported:
libeigen-3.3-beta1 is out of date. As a beta version, it breaks a lot of
the existing code. In particular, triangular views were left out of this
release, and re-inserted in 3.3-beta2 (amongst a lot of bug fixes, see
http://eigen.tuxfamily.org/index.php?title=ChangeLog#Eigen_3.3-beta2).
An example code that does not work in 3.3-beta1, but does work in the
previous and next version of Eigen:
#include <iostream>
#include <Eigen/Dense>
using namespace std;
using namespace Eigen
int main(int argc, char *argv[]) {
MatrixXd X = MatrixXd::Random(3, 3);
SelfAdjointEigenSolver<MatrixXd> solver(X.selfadjointView<Lower>());
MatrixXd V = solver.eigenvectors();
VectorXd D = solver.eigenvalues();
cout << "X=\n" << X << endl;
cout << "V=\n" << V << endl;
cout << "D=\n" << D << endl;
return 0;
}
This complains with:
In file included from /usr/include/eigen3/Eigen/Eigenvalues:38:0,
from /usr/include/eigen3/Eigen/Dense:7,
from mwe.cpp:3:
/usr/include/eigen3/Eigen/src/Eigenvalues/SelfAdjointEigenSolver.h: In
instantiation of ‘Eigen::SelfAdjointEigenSolver<MatrixType>&
Eigen::SelfAdjointEigenSolver<_MatrixType>::compute(const
Eigen::EigenBase<OtherDerived>&, int) [with InputType =
Eigen::SelfAdjointView<Eigen::Matrix<double, -1, -1>, 1u>; _MatrixType =
Eigen::Matrix<double, -1, -1>]’:
/usr/include/eigen3/Eigen/src/Eigenvalues/SelfAdjointEigenSolver.h:168:14:
required from
‘Eigen::SelfAdjointEigenSolver<_MatrixType>::SelfAdjointEigenSolver(const
Eigen::EigenBase<OtherDerived>&, int) [with InputType =
Eigen::SelfAdjointView<Eigen::Matrix<double, -1, -1>, 1u>; _MatrixType =
Eigen::Matrix<double, -1, -1>]’
mwe.cpp:12:74: required from here
/usr/include/eigen3/Eigen/src/Eigenvalues/SelfAdjointEigenSolver.h:428:7:
error: ‘const class Eigen::SelfAdjointView<Eigen::Matrix<double, -1, -1>, 1u>’
has no member named ‘triangularView’
mat = matrix.template triangularView<Lower>();
So in short, the official version of the LTS is currently very buggy. How did a
beta version got included in a LTS? I guess it's impossible to go back to 3.2.9
(the latest package on 15.10 is 3.2.5), so could we at least bump it to the
3.3-beta2?
Ubuntu release:
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Package version:
libeigen3-dev:
Installed: 3.3~beta1-2
Candidate: 3.3~beta1-2
Version table:
*** 3.3~beta1-2 500
500 http://fr.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
500 http://fr.archive.ubuntu.com/ubuntu xenial/universe i386 Packages
100 /var/lib/dpkg/status
** Affects: eigen3 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1610265
Title:
libeigen-3.3-beta1 is out of date and broken
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