Eigen (C++ library)
Eigen is a high-level C++ library of template headers for linear algebra, matrix and vector operations, geometrical transformations, numerical solvers and related algorithms. Eigen is open-source software licensed under the Mozilla Public License 2.0 since version 3.1.1. Earlier versions were licensed under the GNU Lesser General Public License.[2] Version 1.0 was released in Dec 2006.[3]
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| Developer(s) |
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|---|---|
| Stable release | |
| Written in | C++ |
| Operating system | Cross-platform |
| Type | Library |
| License | MPL 2.0 |
| Website | eigen |
Eigen is implemented using the expression templates metaprogramming technique, meaning it builds expression trees at compile time and generates custom code to evaluate these. Using expression templates and a cost model of floating point operations, the library performs its own loop unrolling and vectorization.[4] Eigen itself can provide BLAS and a subset of LAPACK interfaces.[5]
Release 3.4 (2021) includes many improvements.[6]
References
- Rasmus Munk Larsen (19 August 2021). "Eigen 3.4 released!".
- "Eigen License". tuxfamily.org. Retrieved 19 Jan 2021.
- "[eigen] Release 1.0".
- Guennebaud, Gaël (2013). Eigen: A C++ linear algebra library (PDF). Eurographics/CGLibs.
- "Todo - Eigen". eigen.tuxfamily.org.
The eigen_blas library is complete. The eigen_lapack currently implements cholesky and lu decomposition. Contact us if you want to help.
- "3.4 - Eigen".