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14 lines
388 B
JavaScript
14 lines
388 B
JavaScript
var $ = require('../internals/export');
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var nativeAtanh = Math.atanh;
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var log = Math.log;
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// `Math.atanh` method
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// https://tc39.github.io/ecma262/#sec-math.atanh
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// Tor Browser bug: Math.atanh(-0) -> 0
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$({ target: 'Math', stat: true, forced: !(nativeAtanh && 1 / nativeAtanh(-0) < 0) }, {
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atanh: function atanh(x) {
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return (x = +x) == 0 ? x : log((1 + x) / (1 - x)) / 2;
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}
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});
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