How to check for default language?

I want to check if a page is display in the default language or not.

code should look like this:

( $page->language()->default == true ) ? (echo "default language") : (echo "other language")

is something like this possible?

This should work:

<?php if($page->content()->language() == $site->language()->default()) { echo "default language"; } ?>

works great! Thanks.