Version 2.4.2

17th February 2023

Recent Changes

To solve a sparse Hermitian or complex symmetric system of linear equations. Given a sparse Hermitian or complex symmetric matrix $$\mathbf{A} = {\{a _{ij}\}} _{n \times n}$$ and an $$n$$-vector $$\mathbf{B}$$ (or an $$n \times s$$ matrix $$\mathbf{B}$$), this subroutine solves the system $$\mathbf{Ax}=\mathbf{b}$$ ($$\mathbf{AX}=\mathbf{B}$$).
ME57 is a complex version of the code MA57 that is described in the technical report “MA57 - a new code for the solution of sparse symmetric indefinite systems” by Duff (RAL-TR-2002-024). This can be obtained from the web site
http://www.numerical.rl.ac.uk/reports/reports.html.