Linear algebra: Expose the remaining classes listed in Eigen documentation (decompositions and solvers) #571
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Lucas-Haubert
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jorisv
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…d put MINRES in capital letters
…ER following pinocchio
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…elated Eigen SparseMatrix
jorisv
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Aug 4, 2025
Nixpkgs uses eigen v3.4.0-unstable-2022-04-19, aka https://gitlab.com/libeigen/eigen/-/merge_requests/974, because that is required by onnxruntime. Ref. NixOS/nixpkgs#364362 But that fix actually break other things, which are then fixed in https://gitlab.com/libeigen/eigen/-/merge_requests/977 So we need to apply that here, and hope for the next eigen version
jcarpent
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Aug 8, 2025
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This (draft) PR aims at adding the remaining classes in Eigen that we plan to use in practice.
This PR is proposed jointly with the one in nanoeigenpy (Simple-Robotics/nanoeigenpy#13).
What follows if the list of classes treated in this work:
<Eigen/LU>:FullPivLU<Eigen/LU>:PartialPivLU<Eigen/SVD>:JacobiSVD<Eigen/SVD>:BDCSVD<Eigen/Eigenvalues>:ComplexEigenSolver<Eigen/Eigenvalues>:GeneralizedEigenSolver<Eigen/Eigenvalues>:GeneralizedSelfAdjointSolver<Eigen/Eigenvalues>:HessenbergDecomposition<Eigen/Eigenvalues>:RealQZ<Eigen/Eigenvalues>:RealSchur<Eigen/Eigenvalues>:ComplexSchur<Eigen/Eigenvalues>:Tridiagonalization<Eigen/SparseLU>:SparseLU<Eigen/SparseQR>:SparseQR<Eigen/IterativeLinearSolvers>:BiCGSTAB<Eigen/IterativeLinearSolvers>:IncompleteLUT<Eigen/IterativeLinearSolvers>:IncompleteCholesky