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11 lines
304 B
JavaScript
11 lines
304 B
JavaScript
6 years ago
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// 20.2.2.7 Math.atanh(x)
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var $export = require('./_export');
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var $atanh = Math.atanh;
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// Tor Browser bug: Math.atanh(-0) -> 0
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$export($export.S + $export.F * !($atanh && 1 / $atanh(-0) < 0), 'Math', {
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atanh: function atanh(x) {
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return (x = +x) == 0 ? x : Math.log((1 + x) / (1 - x)) / 2;
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}
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});
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