# NOTE:
# currently not in use anymore
# - see PDL::Func (in Lib/) and t/func.t
use Test::More skip_all => 'See PDL::Func';
use PDL::LiteF;
BEGIN {
eval "use PDL::Slatec;";
plan skip_all => "PDL::Slatec: '$@'" if $@;
}
plan tests => 11;
use strict;
eval "use PDL::Interpolate::Slatec";
########### First test normal subclassing ###########
my $x = sequence(float,10);
my $y = $x*$x + 0.5;
my $obj = new PDL::Interpolate::Slatec( x => $x, y => $y );
isa_ok $obj, 'PDL::Interpolate';
is $obj->library, "Slatec";
is( $obj->status, 1 );
my ( $xi, $yi, $gi, $ans, $d );
$xi = sequence(float,5) + 2.3;
$yi = $obj->interpolate( $xi );
is( $obj->status, 1 );
$ans = $xi*$xi + 0.5;
$d = abs( $ans - $yi );
ok( all $d <= 0.03 );
( $yi, $gi ) = $obj->interpolate( $xi );
is( $obj->status, 1 );
$ans = 2*$xi;
$d = abs( $ans - $gi );
ok( all $d <= 0.04 );
# see how they cope with threading
#
$y = cat( $x*$x+43.3, $x*$x*$x-23 );
$obj->set( x => $x, y => $y );
is( $obj->status, 1 );
$yi = $obj->interpolate( $xi );
is( $obj->status, 1 );
ok( (dims($yi) == 2) & ($yi->getdim(0) == $xi->getdim(0)) & ($yi->getdim(1) == 2) );
$ans = cat( $xi*$xi+43.3, $xi*$xi*$xi-23 );
$d = abs( $ans - $yi );
ok( all $d <= 6 );