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12 lines
238 B
JavaScript
12 lines
238 B
JavaScript
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"use strict";
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var exp = Math.exp;
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module.exports = function (value) {
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if (isNaN(value)) return NaN;
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value = Number(value);
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if (value === 0) return 1;
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if (!isFinite(value)) return Infinity;
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return (exp(value) + exp(-value)) / 2;
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};
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