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18 lines
568 B
18 lines
568 B
'use strict';
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// eslint-disable-next-line es/no-math-expm1 -- safe
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var $expm1 = Math.expm1;
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var exp = Math.exp;
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// `Math.expm1` method implementation
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// https://tc39.es/ecma262/#sec-math.expm1
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module.exports = (!$expm1
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// Old FF bug
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// eslint-disable-next-line no-loss-of-precision -- required for old engines
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|| $expm1(10) > 22025.465794806719 || $expm1(10) < 22025.4657948067165168
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// Tor Browser bug
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|| $expm1(-2e-17) !== -2e-17
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) ? function expm1(x) {
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var n = +x;
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return n === 0 ? n : n > -1e-6 && n < 1e-6 ? n + n * n / 2 : exp(n) - 1;
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} : $expm1;
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