Hmm. Is this behavior based on the PP? The ECMAScript 3 standard says
that all NaN values are equal to each other (Section 8.5), even if the
implementation can tell them apart. The proposed ECMAScript 4 standard
says there should be a single global NaN object.
On Mon, 2007-08-27 at 11:50 +0800, zou lunkai wrote:
> > x = new String("a");
> > y = --x;
> > +check_equals(typeof(y), 'number');
> > +xcheck(y!=NaN); // uh ? is it a different NaN ?
> > +check(! (NaN!=NaN));
> > check(isNaN(y));
> > +check(isNaN(NaN));
>
> Tests confirmed.
>
> yes, y might be a differnt NaN(y is an object).
>
> see added tests below:
>
> +x = new Number(NaN);
> +y = NaN;
> +check(isNaN(x));
> +check(isNaN(y));
> +xcheck(x != y); ----->[1]
>
> As we see, [1] should return true. All I can think about is that x
> is an Number object, and y is a primitive number. Doesn't mean much,
> but might help the valueOf model...
>
> zou
>
> On 8/26/07, Sandro Santilli <[EMAIL PROTECTED]> wrote:
> > CVSROOT: /sources/gnash
> > Module name: gnash
> > Changes by: Sandro Santilli <strk> 07/08/25 19:07:46
> >
> > Modified files:
> > . : ChangeLog
> > testsuite/actionscript.all: ops.as
> >
> > Log message:
> > * testsuite/actionscript.all/ops.as: more tests about
> > isNaN(x) when
> > x != NaN (odd)
> >
> > CVSWeb URLs:
> > http://cvs.savannah.gnu.org/viewcvs/gnash/ChangeLog?cvsroot=gnash&r1=1.4101&r2=1.4102
> > http://cvs.savannah.gnu.org/viewcvs/gnash/testsuite/actionscript.all/ops.as?cvsroot=gnash&r1=1.19&r2=1.20
> >
> > Patches:
> > Index: ChangeLog
> > ===================================================================
> > RCS file: /sources/gnash/gnash/ChangeLog,v
> > retrieving revision 1.4101
> > retrieving revision 1.4102
> > diff -u -b -r1.4101 -r1.4102
> > --- ChangeLog 25 Aug 2007 16:10:37 -0000 1.4101
> > +++ ChangeLog 25 Aug 2007 19:07:45 -0000 1.4102
> > @@ -1,5 +1,10 @@
> > 2007-08-25 Sandro Santilli <[EMAIL PROTECTED]>
> >
> > + * testsuite/actionscript.all/ops.as: more tests about isNaN(x) when
> > + x != NaN (odd)
> > +
> > +2007-08-25 Sandro Santilli <[EMAIL PROTECTED]>
> > +
> > * server/vm/ASHandlers.cpp (ActionNewLessThan): convert operands to
> > primitive value before proceeding.
> > * testsuite/actionscript.all/ops.as: xcheck => check
> >
> > Index: testsuite/actionscript.all/ops.as
> > ===================================================================
> > RCS file: /sources/gnash/gnash/testsuite/actionscript.all/ops.as,v
> > retrieving revision 1.19
> > retrieving revision 1.20
> > diff -u -b -r1.19 -r1.20
> > --- testsuite/actionscript.all/ops.as 25 Aug 2007 16:10:37 -0000 1.19
> > +++ testsuite/actionscript.all/ops.as 25 Aug 2007 19:07:46 -0000 1.20
> > @@ -20,7 +20,7 @@
> > * Test binary predicates (equal, less_then, greater_then, logical and
> > bitwise ops)
> > */
> >
> > -rcsid="$Id: ops.as,v 1.19 2007/08/25 16:10:37 strk Exp $";
> > +rcsid="$Id: ops.as,v 1.20 2007/08/25 19:07:46 strk Exp $";
> >
> > #include "check.as"
> >
> > @@ -550,8 +550,11 @@
> >
> > x = new String("a");
> > y = --x;
> > -xcheck(y!=NaN);
> > +check_equals(typeof(y), 'number');
> > +xcheck(y!=NaN); // uh ? is it a different NaN ?
> > +check(! (NaN!=NaN));
> > check(isNaN(y));
> > +check(isNaN(NaN));
> >
> > //------------------------------------------------
> > // Increment Operator (ACTION_DECREMENT: 0x50)
> >
> >
> > _______________________________________________
> > Gnash-commit mailing list
> > Gnash-commit@gnu.org
> > http://lists.gnu.org/mailman/listinfo/gnash-commit
> >
>
>
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