Intel® oneAPI Math Kernel Library Developer Reference - Fortran
Intel® oneAPI Math Kernel Library only supports the shared memory programming (SMP) version of the eigenvalue solver.
The FEAST Algorithm gives a brief description of the algorithm underlying the Extended Eigensolver.
Extended Eigensolver Functionality describes the problems that can and cannot be solved with the Extended Eigensolver and how to get the best results from the routines.
Extended Eigensolver Interfaces gives a reference for calling Extended Eigensolver routines.