#! /usr/local/bin/perl -w

use strict;
use Math::MatrixReal;

sub INVERT_MATRIX
{
my $matrix =Math::MatrixReal->new_from_string(<<'MATRIX');
[ 0 1 2 ]
[ 3 4 5 ]
[ 6 7 8 ]
MATRIX
print $matrix;
my $inverse = $matrix->decompose_LR->invert_LR ;
print $inverse;

##</code><code>##

 % myprog
[  0.000000000000E+00  1.000000000000E+00  2.000000000000E+00 ]
[  3.000000000000E+00  4.000000000000E+00  5.000000000000E+00 ]
[  6.000000000000E+00  7.000000000000E+00  8.000000000000E+00 ]
Use of uninitialized value in print at myprog line 34.