Re: [xml] Test comparison fails on value (-2147483648)

[Daniel Veillard <veillard redhat com>]

On Sun, Aug 26, 2001 at 10:42:01PM -0500, Chris_Poblete Dell com wrote:
> > > The tag <xsl:when test="OutputWatts &lt; 0"> fails to 
> > evaluate correctly 
> > > when OutputWatts is equal to -2147483648.  
>
>
> Consider the ff. for the tag <xsl:when test="OutputWatts &lt; 0">
>      OutputWatts            Evaluation
>       -21474836                pass
>       -214748364               pass
>       -2147483648             (FAIL)
>       -21474836489             pass
>       -2147483648999           pass
>       -2147483648999999999999  pass
> The above values of OutputWatts are all negative numbers and
> no matter how many digits there are, it fails at -2147483648
> since an int is used temporary buffer.

   I changed it to unsigned long. This is not an improvement.
it just avoids to see the overflow for this specific case.

> Is there a reason why the function "atof" or "strtod" is not used instead?
> These functions are supported in Linux, Windows, and Netware.

   Because they relies on the locale settings and hence can lead to completely
unpredictable results, I prefer to risk getting an overflow error report I
can debug than misbehaviours that I cannot reproduce. Doesn't work.

Daniel

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