Re: [eigen] Error when using tridiagonalization_inplace_selector

["Alberto Luaces" <eigen@xxxxxxxxxxxxxxxxxxxx>]

Yes, sorry, that's exactly the error I mean.

It seems that previously it was ok to build the solver from AᵀA, but not anymore.

Thanks for deploying it in godbolt!

On Wed, Sep 8, 2021, at 15:11, Jens Wehner wrote:

Hi,

what is the build error and which system/compiler/options?

Is the build error like this?

https://godbolt.org/z/KGTejxMdq

Compiler Explorer - C++ (x86-64 gcc (trunk)) int main(){ using MatX9 = Eigen::Matrix<double, -1, 9>; MatX9 epipolar_constraint(7, 9); epipolar_constraint.fill(0.0); // EncodeEpipolarEquation(x1, x2, &epipolar_constraint); Eigen::SelfAdjointEigenSolver<MatX9> solver (epipolar_constraint.transpose() * epipolar_constraint); return 0; } godbolt.org

	Jens Wehner
	Research Software Engineer
	+31 6 438 666 87
	Netherlands eScience Center
	www.esciencecenter.nl

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From: Alberto Luaces <eigen@xxxxxxxxxxxxxxxxxxxx>
Sent: Wednesday, September 8, 2021 14:12
To: eigen@xxxxxxxxxxxxxxxxxxx <eigen@xxxxxxxxxxxxxxxxxxx>
Subject: [eigen] Error when using tridiagonalization_inplace_selector

 

Hi, I have found a build error in openmvg when using 3.4.0, shown with this snippet.  Do you think it is a bug in Eigen?

Thanks!

#include <Eigen/Dense>

int main(){

    using MatX9 = Eigen::Matrix<double, -1, 9>;

    MatX9 epipolar_constraint(7, 9);

    epipolar_constraint.fill(0.0);

    // EncodeEpipolarEquation(x1, x2, &epipolar_constraint);                                                                                                                                

    Eigen::SelfAdjointEigenSolver<MatX9> solver

        (epipolar_constraint.transpose() * epipolar_constraint);

    return 0;

}

--

  Alberto

--

  Alberto