michael@0: (function() {
michael@0:   "use asm";
michael@0:   function f(z)
michael@0:   {
michael@0:     z = z|0;
michael@0:     return (((0xc0000000 >>> z) >> 0) % -1)|0;
michael@0:   }
michael@0:   return f;
michael@0: })()(0);