4 Permutes an unsymmetric matrix (square or rectangular) into its block upper
5 triangular form. A translation of
6 [BTF](http://www.cise.ufl.edu/research/sparse/btf/) into Java by
12 Copyright (C) 2004-2011 University of Florida.
13 Copyright (C) 2011-2012 Richard Lincoln.
15 BTFJ is free software; you can redistribute it and/or modify it under
16 the terms of the GNU Lesser General Public License as published by
17 the Free Software Foundation; either version 2.1 of the License, or
18 (at your option) any later version.
20 [![Build Status](https://secure.travis-ci.org/rwl/BTFJ.png)](http://travis-ci.org/rwl/BTFJ)