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authorruki <waruqi@gmail.com>2018-11-08 00:38:48 +0800
committerruki <waruqi@gmail.com>2018-11-07 21:53:09 +0800
commit26105034da4fcce7ac883c899d781f016559310d (patch)
treec459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/core-js/modules/es6.math.imul.js
parent2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff)
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Diffstat (limited to 'node_modules/core-js/modules/es6.math.imul.js')
-rw-r--r--node_modules/core-js/modules/es6.math.imul.js17
1 files changed, 17 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/es6.math.imul.js b/node_modules/core-js/modules/es6.math.imul.js
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+++ b/node_modules/core-js/modules/es6.math.imul.js
@@ -0,0 +1,17 @@
+// 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);
+ }
+});