Description:
------------
not really a bug, but i'd like to suggest a new math-function sgn().
it would make comparison of integer values much easier (an nicer, of course ;)).
i've attached an example in the srccode part.

Reproduce code:
---------------
<?php
// comparison with if/else :
if($a < $b) print("a < b");
elseif($a == $b) print("a == b");
else print("a > b");

// comparison with sgn() :
function sgn($int) {
    if($int > 0) return 1;
    if($int < 0) return -1;
    return 0;
}
switch(sgn($a-$b)){
    case 1: print("a > b");
    case 0: print("a == b");
    case -1: print("a < b");
}
?>

Expected result:
----------------
depends ;)

Actual result:
--------------
depends ...