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- // 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);
- }
- });
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