| // 20.2.2.18 Math.imul(x, y) |
| var $export = require('./_export'); |
| var $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; |
| var xn = +x; |
| var yn = +y; |
| var xl = UINT16 & xn; |
| var yl = UINT16 & yn; |
| return 0 | xl * yl + ((UINT16 & xn >>> 16) * yl + xl * (UINT16 & yn >>> 16) << 16 >>> 0); |
| } |
| }); |