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18 lines
539 B
JavaScript

// 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);
}
});