Subj : Re: -x when x == 0 treated as a double ?
To   : netscape.public.mozilla.jseng
From : Mike Shaver
Date : Wed Jan 26 2005 12:40 pm

bubbfree@gmail.com wrote:
> I have some unexpected behavior in SpiderMonkey (latest RC6).  If I do
> this:
> 
> var x = 0;
> myNativeFunction(-x);
> 
> the jsval in argv[0] for my native handler is of type double. I would
> have expected int.

I think double is correct there.  Spidermonkey will express a number 
internally as an int jsval only if the transformation is exact.  Since 
there's no integer representation with jsvals for -0, IIRC, it will 
always be a double.

Mike

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