1. Set of routines for solving unsymmetric sparse linear systems. UMFPACK is a set of routines for solving unsymmetric sparse linear systems, Ax=b, using the Unsymmetric MultiFrontal method. Written in ANSI/ISO C, with a Matlab (Version 6.0 and later) interface. The new code is faster than V2.2.1, uses dynamic memory allocation, and has a symbolic preordering and analysis phase that also reports the upper bounds on the nonzeros in L and U, flop count, and memory usage in the numeric phase. It includes a Matlab interface. V3.2 is for double-precision matrices only (not complex). From Debian 3.0r0 APT