| /* eslint no-bitwise: "off" */ | |
| // Thanks: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference | |
| // /Global_Objects/Math/imul | |
| "use strict"; | |
| module.exports = function (val1, val2) { | |
| var xh = (val1 >>> 16) & 0xffff | |
| , xl = val1 & 0xffff | |
| , yh = (val2 >>> 16) & 0xffff | |
| , yl = val2 & 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; | |
| }; |