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STCSSP: A FORTRAN 77 routine to compute a structured staircase form for a (skew-)symmetric/(skew-)symmetric matrix pencil

Brüll, Tobias; Mehrmann, Volker

Preprint-Reihe des Instituts für Mathematik, Technische Universität Berlin

This paper contains the description of the algorithm STCSSP and its interface. STCSSP is a FORTRAN subroutine that computes a structured staircase form for a real (skew-) symmetric / (skew-) symmetric matrix pencil, i.e., a pencil where each of the two matrices is either symmetric or skew-symmetric. An example how to call the subroutine is given.