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At 2004-02-25 08:09 -0600, Bill Riegel wrote:
>I tried to use the follow line to determine if an input was a number or not.
>
><xsl:if test="number( input ) = number( input )" >
Yes, that is what I teach in my class for checking for a
number. Specifically, I use it to help people use this in a predicate as
in the following sum of all children that are numbers:
sum(*[number(.)=number(.)])
... otherwise something as simple as an empty child element messes up the
sum to produce NaN.
>I read somewhere that if input is not a number, the function returns NaN,
>and NaN is not equal to NaN so this should work.
Yes, I believe this to be the proper justification for the interpretation.
>If my input is "75 F", Xalan 2.5.2 says it is a number, 75, but
>I have tried it against xmlspy and another IDE called Stylus Studio, and
>they but indicate it is not a number.
>
>Is there a problem with Xalan number implementation ?
Must be ... "75 F" is not a number in the IEEE numbering scheme.
I hope this helps.
........................... Ken
p.s. XSLT and XPath questions would be better posted to the following list:
http://www.mulberrytech.com/xsl/xsl-list
There are a number of subscribers who would enthusiastically respond to
such questions.
There is also an *excellent* FAQ at:
http://www.dpawson.co.uk
--
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G. Ken Holman mailto:gkholman@CraneSoftwrights.com
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