Description:
------------
fetching rows, from a numeric(18,4) column  gives wrong value (-0.0000) when value is -1

I verified this with iboconsole, and i can see that the correct value is in the database and iboconsole also returns the correct value.

Reproduce code:
---------------
<?php
$db = ibase_connect("server:/mydb.fdb", "SYSDBA", "mypass");
if ($db)
$q = ibase_query($db, "select * from test");
if($q)
 while($row = ibase_fetch_row($q))
	var_dump($row);
?>

Test table:

CREATE TABLE TEST
(
testcol numeric(18,4)
);



Expected result:
----------------
-1.0000

Actual result:
--------------
-0.0000