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 …

Aug 18, 2025 · 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 …

Mar 2, 2010 · Because Eigen handles both fixed-size and dynamic-size expressions, some conditions cannot be clearly determined at compile time. We classify them into strict assertions and permissive …

Eigen offers a comma initializer syntax which allows the user to easily set all the coefficients of a matrix, vector or array. Simply list the coefficients, starting at the top-left corner and moving from left to right …

The Eigen version I used is 3.3.4. Btw I realise the benchmark is a bit crude (and might better be done with something like Google Benchmark), but I'm getting very consistent results.

Mar 2, 2010 · 91 EIGEN_MKL_QR_COLPIV (double, double, d, RowMajor, LAPACK_ROW_MAJOR) 92 EIGEN_MKL_QR_COLPIV (float, float, s, RowMajor, LAPACK_ROW_MAJOR) 93 …

Apr 21, 2022 · This is the complete list of members for Eigen::Array< Scalar_, Rows_, Cols_, Options_, MaxRows_, MaxCols_ >, including all inherited members.

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.

This bugzilla service is closed. All entries have been migrated to https://gitlab.com/libeigen/eigen Bug 792 - SparseLU::factorize crashes with error: "Assertion `index >= 0 && index < size ()' failed."

The Eigen library is divided in a Core module and several additional modules. Each module has a corresponding header file which has to be included in order to use the module. The Dense and Eigen …