strange behavior, when converting float to int

Hi, all!

Is this a bug?

max@maximus:~$ /usr/bin/php 1.php
45
45
float(46)


max@maximus:~$ /usr/bin/php -v
PHP 5.3.0-dev (cli) (built: Apr  4 2008 11:37:33)
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2008 Zend Technologies


max@maximus:~$ cat 1.php
<?php
$i = 10.35 + 20.76 + 5.80 + 5.80 + 3.29;
echo (int)$i;
echo "\n";
echo intval($i);
echo "\n";
var_dump($i);

max@maximus:~$