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11 lines
351 B
11 lines
351 B
exports = function(num) { |
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num = num.toExponential().match(regExponential); |
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var coefficient = num[1]; |
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var exponent = parseInt(num[2], 10); |
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var places = (coefficient.split('.')[1] || '').length; |
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var ret = places - exponent; |
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return ret < 0 ? 0 : ret; |
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}; |
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var regExponential = /^(-?\d?\.?\d+)e([+-]\d)+/; |
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module.exports = exports;
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