RE: Floating point numbers in XPath

XPath 1.0 is completely prescriptive about the string representation of a
floating-point number. The result will never use scientific (exponent)
notation. The rules are in section 4.2 of the XPath specification; two
correct processors will always give the same result.

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of
> Richard Jinks
> Sent: 09 April 2002 13:00
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  Floating point numbers in XPath
>
>
> Hi
>
> Is there any standard default rule governing the conversion
> of a double to a
> string when the double is of the form "0.x1" (where x is any
> number of 0s).
> i.e. should string(0.000001) return "0.000001", "1e-6",
> "1e-06", "1e-006",
> etc, or does the spec leave this open as implementation specific?
> If there is a specific rule hidden somewhere, where is the
> cut-off point for
> the number of 0s to output before the format changes to "1e-x"?
>
> I've checked the obvious places (XPath Spec, Java Language spec), but
> without any use.
> I don't know if the IEEE 754 spec has anything useful, but
> most of the C
> Compilers I've found don't agree, same with the XPath implementations.
>
> Thanks for any help,
> Richard
>
>
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com
>
>
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
>


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list