umfpack_simple
 UMFPACK_SIMPLE a simple demo
 
  Example:
    umfpack_simple
 
  Copyright 1995-2007 by Timothy A. Davis.
 
  UMFPACK License:
 
      Your use or distribution of UMFPACK or any modified version of
      UMFPACK implies that you agree to this License.  UMFPACK is
      is free software; you can redistribute it and/or
      modify it under the terms of the GNU Lesser General Public
      License as published by the Free Software Foundation; either
      version 2.1 of the License, or (at your option) any later version.

A = 
     2     3     0     0     0
     3     0     4     0     6
     0    -1    -3     2     0
     0     0     1     0     0
     0     4     2     0     1
b = 
     8
    45
    -3
     3
    19
Solution to Ax=b via UMFPACK:
x1 = umfpack2 (A, '\', b)
x1 = 
    1.0000
    2.0000
    3.0000
    4.0000
    5.0000
Solution to Ax=b via MATLAB:
x2 = A\b
x2 = 
    1.0000
    2.0000
    3.0000
    4.0000
    5.0000
norm (x1-x2) should be small: 1.28037e-15
Type 'umfpack_demo' for a full demo of UMFPACK
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