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16 lines
397 B
16 lines
397 B
// 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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