Matrix Eigensystem Routines Вђ” Eispack Guide | Legit

It solves the standard eigenvalue problem ( ) and the generalized problem (

The library handles real and complex matrices, including specific optimizations for symmetric, asymmetric, tridiagonal, banded, and Hessenberg forms. Matrix Eigensystem Routines — EISPACK Guide

Specifically Level 3 BLAS, which performs matrix-matrix operations to maximize data reuse in cache. It solves the standard eigenvalue problem ( )