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# Test Script for the PDL interface to the GSL library
# This tests mainly that the interface is working, i.e. that the
# functions can be called.
# The GSL library already has a extensive test suite, and we
# do not want to duplicate that effort here.
use strict;
use warnings;
use PDL::LiteF;
use PDL::GSL::MROOT;
use Test::More;
my $init = pdl (-10.00, -5.0);
my $epsabs = 1e-7;
my $res = gslmroot_fsolver($init, \&rosenbrock,{Method => 0, EpsAbs => $epsabs});
my @res = list ($res);
ok(abs($res[0]- 1) < 1e-6 );
ok(abs($res[1]- 1) < 1e-6 );
done_testing;
sub rosenbrock{
my ($x) = @_;
my $a1 = 1;
my $b1 = 10;
my $y = zeroes($x);
$y->slice(0) .= $a1 * (1 - $x->slice(0));
$y->slice(1) .= $b1 * ($x->slice(1) - $x->slice(0)**2);
return $y;
}
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