https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-fortran/2025-0/stevd.html
?stevd
Computes all eigenvalues and, optionally, all eigenvectors of a real symmetric tridiagonal matrix using divide and conquer algorithm.
https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-fortran/2023-1/stevd.html
?stevd
Computes all eigenvalues and, optionally, all eigenvectors of a real symmetric tridiagonal matrix using divide and conquer algorithm.