Ever wanted to do some random mathematical operations on some numbers? Well, me neither, but here's some perl code that'll let you do it anyway. The function takes two arguments: both optional. It's self explanatory, pretty much, and is customizable via variables. Here goes; critique if you wish:

#of coure, use strict && use warnings wherever you put this code

sub math_stuff {
    my @bin   = qw(+ - * / % << >> & | ^);
    my $un    = qw(~);
    my $max   = 2_041;
    my $done  = 20;
    my $left  = $_[0] || int(rand(int($max/2)));
    my $right = $_[1] || int(rand($max-$left));
    my $rv    = eval "int($left $bin[int(rand($#bin))] $right) 
                      & $max";
    do {
        my $oper_b = $bin[int(rand($#bin))];
        my $oper_u = int(rand(50)) > 25 ? $un   : " ";
           $oper_u = " " if ($done - $_) <= 5;
        my $num    = int(rand(50)) > 25 ? $left : $right;
        if($oper_b eq "%" || $oper_b eq "<<" || $oper_b eq ">>") {
            unless((eval "$oper_u $num") > $rv) {
                $num ^= $rv;
                $rv ^= $num;
                $num ^= $rv;
            }
        }
        $rv     = eval "int($oper_u $num $oper_b $rv) & $max";
    } for 1..$done;
    $rv ^ $max & int(rand(int($max/5)));
}
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