| // Thanks: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference | |
| // /Global_Objects/Math/imul | |
| 'use strict'; | |
| module.exports = function (x, y) { | |
| var xh = (x >>> 16) & 0xffff, xl = x & 0xffff | |
| , yh = (y >>> 16) & 0xffff, yl = y & 0xffff; | |
| // the shift by 0 fixes the sign on the high part | |
| // the final |0 converts the unsigned value into a signed value | |
| return ((xl * yl) + (((xh * yl + xl * yh) << 16) >>> 0) | 0); | |
| }; |