Re: [xsl] NaN

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2002-02-26 12:18 -0500, Clark, Jason wrote:
> I want to see if the value of an attribute or element is a number or string.
> I tried using number(@value) != 'NaN', but it always returns false.  How can
> I find if a value is a string or number.

The following will be true if the value is a number:

  test="@value <= 0 or @value > 0"

The use of < and > will coerce the argument to a number, and NaN does not 
pass either test.  If the entire test results in false, then it must not 
have been a number, otherwise one of the two would have been true if it 
were a number.

I hope this helps.

................... Ken


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