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Both tests check that fn:min returns a xs:float (representing NaN). But the specs requires to convert the items to a common datatype before checking for NaN ("If the converted sequence contains the value NaN, the value NaN is returned"), and in both cases the list of items contains an item that forces the conversion to xs:double (K-SeqMINFunc-18 has xs:untypedAtomic("3"), K-SeqMINFunc-19 has xs:double("NaN"))
The same applies to K-SeqMAXFunc-18 and K-SeqMAXFunc-19
Fixed in CVS. I also added some more tests for this delicate area. You are welcome to verify the latest version, which can be downloaded from here, the file AdditionalFiles/submission-frans.zip: http://dev.w3.org/cvsweb/2006/xquery-test-suite/ It contains all tests by name K-*. Frans
Since this report was resolved as suggested, I am changing status to CLOSED. Feel free to reopen if the resolution was incorrectly implemented, for example. Frans