[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Q on XSLT number calculation precision

Subject: Q on XSLT number calculation precision
From: Hermann Stamm-Wilbrandt <STAMMW@xxxxxxxxxx>
Date: Thu, 17 Feb 2011 23:56:28 +0100
 Q on XSLT number calculation precision

are there any requirements on precision of number calculations for XSLT?

I wrote stylesheet [3] just summing the first 1000 (small) terms of this
nice identity on binomial coefficient reciprocals I proved 28 years ago:

$$ \sum_{i=j+1}^{\infty}{}^1/_{i\choose j}={}^1/_{(j-1)} , ~ j\ge 2 $$

Pascal.xml [2] just starts the computation with jmax=12 and terms=1000.

I opened Pascal.xml in the big five browsers, arranged them in order to
easily compare their results and took screenshot [3] from that.

Not surprisingly the most left and most right column (Chrome and Safari)
are identical (same XSLT engine).

Interestingly Firefox and Internet Explorer produce nearly identical

For j<=7 Opera is fine, but for j>=8 something goes really wrong.
The sum of the 1000 terms becomes bigger than then infinity sum :-)

[2] http://stamm-wilbrandt.de/en/blog/Pascal.xml
[3] http://stamm-wilbrandt.de/en/blog/Pascal.xsl

Mit besten Gruessen / Best wishes,

Hermann Stamm-Wilbrandt
Developer, XML Compiler, L3
Fixpack team lead
WebSphere DataPower SOA Appliances
IBM Deutschland Research & Development GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter
Geschaeftsfuehrung: Dirk Wittkopp
Sitz der Gesellschaft: Boeblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294

Current Thread


Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
First Name
Last Name
Subscribe in XML format
RSS 2.0
Atom 0.3
Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.