Re: [xml] XPath Infinities

[Matt Sergeant <matt sergeant org>]

On Fri, 27 Apr 2001, Daniel Veillard wrote:

> #ifdef XPATH_USE_DIVISION_SHORTCUTS
>         xmlXPathNAN = 0;
>       xmlXPathNAN /= 0.0;
>       xmlXPathPINF = 1;
>       xmlXPathPINF /= 0.0;
>       xmlXPathNINF = -1;
>       xmlXPathNINF /= 0.0;
> #else
>         xmlXPathNAN = 0.0 / 0.0;
>       xmlXPathPINF = 1 / 0.0;
>       xmlXPathNINF = -1 / 0.0;
> #endif
>
>   I let you provide the patch to the Windows include to define
> the XPATH_USE_DIVISION_SHORTCUTS macro.

I've heard some compilers work OK with NaN = -1 ** 0.5 too. You might be
able to detect that in configure.

-- 
<Matt/>

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