The ATLAS experiment at the LHC (Large Hadron Collider) at CERN is using Eigen, as reported in this article, noting "Eigen was chosen since it offered the largest performance improvements for ATLAS …

Holds information about the various numeric (i.e. scalar) types allowed by Eigen. ...

Eigen is thoroughly tested through its own test suite (over 500 executables), the standard BLAS test suite, and parts of the LAPACK test suite. Eigen is elegant. The API is extremely clean and …

Mar 2, 2010 · Eigen2 support is deprecated in Eigen 3.2.x and it will be removed in Eigen 3.3. This page lists the most important API changes between Eigen2 and Eigen3, and gives tips to help porting your …

Nevertheless, I fixed the root of this bug in 3.2 and devel branch: https://bitbucket.org/eigen/eigen/commits/890ac1744 …

Mar 2, 2010 · #include <Eigen/Sparse> #include <vector> #include <QImage> typedef Eigen::SparseMatrix<double> SpMat; // declares a column-major sparse matrix type of double

For a much more complete table comparing all decompositions supported by Eigen (notice that Eigen supports many other decompositions), see our special page on this topic.

Detailed Description template<typename MatrixType_, typename Preconditioner_> class Eigen::DGMRES< MatrixType_, Preconditioner_ >

The class SparseMatrix is the main sparse matrix representation of Eigen 's sparse module; it offers high performance and low memory usage. It implements a more versatile variant of the widely-used …