[xsl] "1" cast as xs:boolean

["Christian Roth" <roth@xxxxxxxxxxxxxx>]

Hello,

what should

 "1" cast as xs:boolean

evaluate to: true or false?

I checked

<http://www.w3.org/TR/xmlschema-2/#boolean>

which I think should be my reference for determining the answer, but I
cannot find the place where it is defined how literals 1 and 0 are
mapped to the canonical representation of xs:boolean, true and false.

Any pointers where I need to look for that info?

Thanks,
Christian