Expected test results for predicates-10 are incorrect. Correct result is:

<?xml version="1.0" encoding="UTF-8"?>
<atomic:decimal xmlns:atomic="http://www.w3.org/XQueryTest"       
                xmlns:foo="http://www.example.com/foo"
                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                atomic:attr="12678967.543233">12678967.543233</atomic:decimal>

(Note atomic:attr)

Michael Kay