Subject: RE: [xsl] XPath number with 20 digits gives you a head ache From: "Michael Kay" <mhkay@xxxxxxxxxxxx> Date: Thu, 25 Jan 2001 10:25:06 -0000 |
> Simple XPath question regarding string to number conversions. Should > > <xsl:value-of select="number(string('92125374252539897737'))" /> > > return > > 92125374252539897737 > > since most processors return > > 92125374252539900000 > > which is not what one would want. Is this XPath spec or XSLT > implementation related issue? The spec requires IEEE 754 double-precision floating point arithmetic, which is about 17 digits of precision. The rules are very strict and a processor isn't allowed to give you greater precision even if it wants to, nor is it allowed to "optimize out" the conversion of a string to a number and then back to a string. I hesitate to assert that the above is actually correct, but if you're getting it from several processors then the chances are that it is. Incidentally calling the string() function on a string literal seems rather superfluous! Mike Kay XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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