Subj : spidermonkey: are integers (mathematical sense) always stored in
To   : netscape.public.mozilla.jseng
From : Jens Thiele
Date : Fri Nov 12 2004 02:12 pm

I just was surprised that evaluating javascript code like
"var x=10.0;Math.sqrt(x*x*x*x);"
or perhaps a better example:
"var x;x=100.0;"

results in an integer jsval (tagged an shifted of course)
and in jsmath.c always js_NewNumberValue is used to return values
which first tries to fit the number into an jsval
Is this "normalization" something one can count upon?

=> is the following statement true?
if a Number was somehow generated by spidermonkey and it is an
integer (in the mathematical sense) that fits in an jsval
then it will always be stored directly in the jsval?

Jens

PS: is there something related in the ecma spec?

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