17 lines
397 B
JavaScript
17 lines
397 B
JavaScript
// Thanks: https://github.com/monolithed/ECMAScript-6
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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 value;
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if (value === Infinity) return Infinity;
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if (value === -Infinity) return -1;
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if (value > -1.0e-6 && value < 1.0e-6) return value + (value * value) / 2;
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return exp(value) - 1;
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};
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