// 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); | |
} | |
}); |