Solves a system of linear equations with a symmetric (Hermitian) positive-definite tridiagonal distributed matrix using the factorization computed by p?pttrf.
Computes row and column scaling factors intended to equilibrate a symmetric (Hermitian) positive definite distributed matrix and reduce its condition number.
Multiplies a general matrix by the orthogonal matrix Q of the QL factorization formed by p?geqlf.
Reduces a real symmetric matrix to symmetric tridiagonal form.
Computes right and/or left eigenvectors of a complex upper triangular matrix in parallel.
Solves a symmetric/Hermitian positive definite banded system of linear equations.
Swaps adjacent diagonal blocks of a real upper quasi-triangular matrix in Schur canonical form, by an orthogonal similarity transformation.
Computes a QR factorization of a general rectangular matrix (unblocked algorithm).
Returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value of any element, of a triangular matrix.
Generates an elementary reflector (Householder matrix).