Computes component-wise relative backward error.
Improves the computed solution to a system of linear equations for symmetric indefinite matrices by performing extra-precise iterative refinement and provides error bounds and backward error estimates for the solution.
Translates a character string specifying whether a matrix has a unit diagonal to the relevant BLAST-specified integer constant.
Computes the LU factorization of a general n-by-n banded distributed matrix.
Estimates the reciprocal of the condition number (in the 1 - norm) of a symmetric / Hermitian positive-definite distributed matrix.
Generates the orthogonal matrix Q of the QR factorization formed by p?geqrf.
Generates the unitary matrix Q of the RQ factorization formed by p?gerqf.
Reduces a general matrix to upper Hessenberg form.
Solves a general band system of linear equations.
Computes selected eigenvalues and, optionally, eigenvectors of a real generalized symmetric definite eigenproblem.