Computes the eigenvalues and Schur factorization of an upper Hessenberg matrix, using the double-shift/single-shift QR algorithm.
Returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a symmetric matrix supplied in packed form.
Scales a Hermetian band matrix, using scaling factors computed by ?pbequ.
Applies a block reflector or its transpose/conjugate-transpose to a general rectangular matrix.
Computes the eigenvectors of the tridiagonal matrix T = L*D*LT given L, D and the eigenvalues of L*D*LT.
Computes the square root of the i-th eigenvalue of a positive symmetric rank-one modification of a 2-by-2 diagonal matrix.Used by ?bdsdc.
Sorts numbers in increasing or decreasing order.
Generates all or part of the orthogonal/unitary matrix Q from a QR factorization determined by ?geqrf (unblocked algorithm).
Computes the factorization of a real/complex symmetric indefinite matrix, using the diagonal pivoting method (unblocked algorithm).
Solves a matrix equation (one operand is a triangular matrix in RFP format).