--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/liboctave/UMFPACK/UMFPACK/MATLAB/umfpack.m	Fri Feb 25 19:55:28 2005 +0000
@@ -0,0 +1,44 @@
+function [out1, out2, out3, out4, out5] = umfpack (in1, in2, in3, in4, in5)
+% UMFPACK v4.4 is a MATLAB mexFunction for solving sparse linear systems.
+%
+% UMFPACK v4.4:                       |  MATLAB approximate equivalent:
+% ---------------------------------------------------------------------
+% x = umfpack (A, '\', b) ;           |  x = A \ b
+%                                     |
+% x = umfpack (b, '/', A) ;           |  x = b / A
+%                                     |
+% [L,U,P,Q] = umfpack (A) ;           |  [m,n] = size (A) ;
+%                                     |  I = speye (n) ;
+%                                     |  Q = I (:, colamd (A)) ;
+%                                     |  [L,U,P] = lu (A*Q) ;
+%                                     |
+% [L,U,P,Q,R] = umfpack (A) ;         |  [m,n] = size (A) ;
+%                                     |  I = speye (n) ;
+%                                     |  Q = I (:, colamd (A)) ;
+%                                     |  r = full (sum (abs (A), 2)) ;
+%                                     |  r (find (r == 0)) = 1 ;
+%                                     |  R = spdiags (r, 0, m, m) ;
+%                                     |  [L,U,P] = lu ((R\A)*Q) ;
+%                                     |
+% [P,Q,F,C] = umfpack (A, 'symbolic') |  [m,n] = size (A) ;
+%                                     |  I = speye (n) ;
+%                                     |  Q = I (:, colamd (A)) ;
+%                                     |  [count,h,parent,post] = ...
+%                                     |  symbfact (A*Q, 'col') ;
+%
+% A must be sparse.  It can be complex, singular, and/or rectangular.  A must be
+% square for '/' or '\'.  b must be a full real or complex vector.  For
+% [L,U,P,Q,R] = umfpack (A), the factorization is L*U = P*(R\A)*Q.  If A has a
+% mostly symmetric nonzero pattern, then replace "colamd" with "amd" in the
+% MATLAB-equivalent column in the table above.  Type umfpack_details for more
+% information.
+%
+% See also: lu_normest, colamd, amd.
+% To use UMFPACK for an arbitrary b, see umfpack_solve.
+
+% UMFPACK Version 4.4, Copyright (c) 2005 by Timothy A. Davis.
+% All Rights Reserved.  Type umfpack_details for License.
+
+help umfpack
+error ('umfpack mexFunction not found!  Use umfpack_make to compile umfpack.') ;
+