Multiplies a general matrix by an orthogonal/unitary matrix with a 2x2 structure.
Computes the eigenvectors corresponding to specified eigenvalues of a real symmetric tridiagonal matrix.
Balances a general matrix to improve the accuracy of computed eigenvalues and eigenvectors.
Reorders the generalized Schur decomposition of a pair of matrices (A,B) so that one diagonal block of (A,B) moves to another row index.
Computes the minimum-norm solution to a linear least squares problem using the singular value decomposition of A.
Computes all eigenvalues and, optionally, eigenvectors of a Hermitian matrix in packed storage.
Computes the eigenvalues and Schur factorization of a general matrix, and orders the factorization so that selected eigenvalues are at the top left of the Schur form.
Computes all eigenvalues and, optionally, eigenvectors of a real generalized symmetric definite eigenproblem.
Computes selected eigenvalues and, optionally, eigenvectors of a real generalized symmetric definite eigenproblem with banded matrices.
Performs the symmetrical rank-1 update of a complex symmetric packed matrix.