Re: [xslt] number() floated?

[Laurence Rowe <l lrowe co uk>]

On 16 December 2011 17:06, Konrad Korzeniowski <konrad pandur net> wrote:
> Hi there,
>
> I'm using 1.1.26-6 version of libxslt (Debian Lenny), and cannot find any
> explanation regarding described below behaviour.
>
> I got following simple xslt file:
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <xsl:stylesheet version="1.0"
> xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
>     <xsl:template match="/">
>     <xsl:value-of select="number('8.95')"/>
>     </xsl:template>
> </xsl:stylesheet>
>
>
> running xsltproc with this xsl against any xml gives:
> 8.949999999999999
>
> Is this expected? Shouldn't this be 8.85?
>
> Thanks for any explanation.

Not all decimals may be exactly represented in binary floating point.
See: http://en.wikipedia.org/wiki/Floating_point#Representable_numbers.2C_conversion_and_rounding

Laurence