RE: datatype comparisons and arithmetic conversions

From: Mike Dean (
Date: 01/06/04

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    > Said:  what's the current status of the list of
    > arithmetic/comparison/string/list built-ins you (plus I and Harold) have
    > been working on?
    > That included stuff drawn from looking at other systems/standards (like
    > Prolog and Jess) as well as from XML-Schema / XQuery.
    > I think you're the maintainer of that list/document.
    Assuming folks are still happy with swrlx:operationAtom this week, I think
    next week would be a good time to revisit this list.
    > Most importantly:  is there any stuff there we should include that's not
    > in
    > the XML-Schema / XQuery set of stuff?
    I think we'll probably want to add a few more operators to [1] like
    numeric-greater-than-or-equal, numeric-less-than-or-equal, and
    numeric-not-equal based on numeric-equal, numeric-less-than, and
    Also, [1] uses fn:compare for strings (to accommodate an optional collation
    argument) which returns <0, 0, or >0.  Using this would require 2
    swrlx:operatorAtoms.  I think we may want to introduce string-equal,
    string-less-than, etc. as easier-to-use forms.

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