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- var $ = require('../internals/export');
- var fails = require('../internals/fails');
- var nativeImul = Math.imul;
- var FORCED = fails(function () {
- return nativeImul(0xFFFFFFFF, 5) != -5 || nativeImul.length != 2;
- });
- // `Math.imul` method
- // https://tc39.github.io/ecma262/#sec-math.imul
- // some WebKit versions fails with big numbers, some has wrong arity
- $({ target: 'Math', stat: true, forced: FORCED }, {
- 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);
- }
- });
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