[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Formulas in XML values
Michael Kay wrote: > > I wouldn't say that XPath can't perform rational arithmetic but > rather that rational arithmetic is not yet implemented for XPath. > > XPath does not have an atomic data type that is capable of > representing the value 1/3 accurately. You could of course do it all > using extension functions, but then it wouldn't really be XPath, just > XPath calling out to something else. > You could use a sequence (of numbers and delimter/operator strings) and eval it. You could then do symbolic simplifications ( $a /$b ) + ( $c /$b ) -> ($a + $c) /$b $x / 1 -> $x It would be simpler in real LISP (can XPath sequences contain sequences?) but the same kind of thing. Cheers Rick
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] |
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|