// 20.2.2.18 Math.imul(x, y) var $export = require('./$.export') , $imul = Math.imul; // some WebKit versions fails with big numbers, some has wrong arity $export($export.S + $export.F * require('./$.fails')(function(){ return $imul(0xffffffff, 5) != -5 || $imul.length != 2; }), 'Math', { imul: function imul(x, y){ var UINT16 = 0xffff , xn = +x , yn = +y , xl = UINT16 & xn , yl = UINT16 & yn; return 0 | xl * yl + ((UINT16 & xn >>> 16) * yl + xl * (UINT16 & yn >>> 16) << 16 >>> 0); } });