Wordpress: Two column wrap

wp_twocolumnwrap.php

<?php while( have_posts() ) : the_post(); //start of the loop ?>
<?php if( $wp_query->current_post%2 == 0 ) echo "\n".'<div class="twocolumnpostswrap">'."\n"; ?>

    <?php // do post stuff here ?>

<?php if( $wp_query->current_post%2 == 1 || $wp_query->current_post == $wp_query->post_count-1 ) echo '</div> <!--/.twocolumnpostswrap-->'."\n"; ?>
<?php endwhile; //end of the loop ?>