Introduction

sls_purpose Purpose

Given a sparse symmetric $n \times n$ matrix $A = a_{ij}$ and the factorization of $A$ found by the GALAHAD package SLS, this package ** solves the system of linear equations $A x = b$ using iterative refinement.**

Currently, only the control and inform parameters are exposed; these are provided and used by other GALAHAD packages with C interfaces.

Authors

N. I. M. Gould, STFC-Rutherford Appleton Laboratory, England.

C interface, additionally J. Fowkes, STFC-Rutherford Appleton Laboratory.

Julia interface, additionally A. Montoison and D. Orban, Polytechnique Montréal.

Originally released

October 2008, C interface January 2022