6346 2009-01-03 16:37:08 +0000 [FO] fn:number() example 2009-01-28 20:58:16 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Functions and Operators 1.0 Recommendation PC Windows NT CLOSED FIXED P2 normal --- 1 mike mike jim.melton public-qt-comments oldest_to_newest 22891 0 mike 2009-01-03 16:37:08 +0000 The second example for fn:number() (section 14.4.1) is: fn:number($item2) returns NaN. Now $item2 (scroll up to the start of section 14) is bound to an element of the form <line-item> <description> ... </description> <price> ... </price> <quantity>5.0</quantity> ... </line-item> Since we are told that quantity is typed as xs:decimal, we must infer that this element is schema-validated, and it therefore seems highly likely that the line-item element would be defined with element-only content. In this situation I believe number() should fail with a type error; because although number() itself is resilient to casting errors, the atomization of the argument is done under the function calling rules and will fail in the case of element-only content. I think it would be better to use a different example, say number($item1/description) (having given this element some non-numeric content). 22892 1 mike 2009-01-03 16:47:20 +0000 Note also, fn:number() says twice that "If $arg is the empty sequence, NaN is returned.". 23288 2 mike 2009-01-28 20:57:52 +0000 Erratum E36 has been raised to fix the first problem. The second (duplication) does now harm and will be left alone. The bug is being marked fixed and closed.