This question is sufficiently answered, I'm just an idiot that forgets to use references

I wrote a little module that I could use to approximate lagrange polynomials in Perl.

The only problem is, it doesn't work. I consistantly get a single value whenever I feed some test function into Lagrange's maw.

Any help would be appreciated, code below:

#! /usr/bin/perl

use strict;
use warnings;

sub lagrange {
#x is an array of x values, f is an array of function values, LC are t
+he reduced lagrange coefficients.
    my @x = shift;
    my @f = shift;
    my ($i, $j);
    my @LC;
    my $point = @x;
    my $den = 1;
        for ($i=0; $i < $point; $i++) {
            for ($j = 0; $j < $point; $j++) {
                unless ($j == $i) {
                            $den *= ($x[$i] - $x[$j]);
                }
            $LC[$i] = $f[$i]/$den;
            $den = 1;    
            }
        
        }

    return \@LC;
}

sub lageval {
    my @x = shift;
    my @LC = shift;
    my $x0 = shift;
    my $point = @x;
    my @mult;
    my $sum = 0;
    my ($i, $j);

    for($i=0; $i<$point; $i++) {
        $mult[$i] = 1;
    }

    for ($i=0; $i<$point;$i++) {
        for ($j = 0; $j<$point; $j++) {
            unless ($j == $i) {
                $mult[$i] *= $x0 - $x[$j];
            }
        }
    $sum += $mult[$i] * $LC[$i];
    
    }

    return $sum;
}

1;
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