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17 lines
539 B
17 lines
539 B
// 20.2.2.18 Math.imul(x, y) |
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var $export = require('./_export'); |
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var $imul = Math.imul; |
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// some WebKit versions fails with big numbers, some has wrong arity |
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$export($export.S + $export.F * require('./_fails')(function () { |
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return $imul(0xffffffff, 5) != -5 || $imul.length != 2; |
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}), 'Math', { |
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imul: function imul(x, y) { |
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var UINT16 = 0xffff; |
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var xn = +x; |
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var yn = +y; |
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var xl = UINT16 & xn; |
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var yl = UINT16 & yn; |
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return 0 | xl * yl + ((UINT16 & xn >>> 16) * yl + xl * (UINT16 & yn >>> 16) << 16 >>> 0); |
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} |
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});
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