[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Math "functions" for XSLT 1.0
Hello,
As you know, XSLT 1.0 and XPath 1.0 are now widely supported. Unfortunately, XPath 1.0 doesn't come with mathematical functions such as "sqrt", "sin", "cos", "ln",... XPath 2.1 surely will but we'll have to wait to see it available in every environment. Because such functions may be required for graphics generation, a workaround has to be used. Hopefully, named templates can be defined with XSLT 1.0: a name, one or more parameters and every XSLT 1.0 possibility, recursivity to be used instead of loops. Algorithms based on +, -, * and / only are not that easy to find. CORDIC-based algorithms are not always very precise. Others, such as the ones for a Javascript engine, are optimized for binary processing. Anyway, it works! You can have a look at http://www.agencexml.com/math/math.xml and http://www.agencexml.com/math/math.xsl As you can see, it's fast and precise. Best regards, Alain Couthures <agenceXML> Bordeaux, France http://www.agencexml.com
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