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+/**
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+ * @author bwhitn [brian.m.whitney@outlook.com]
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+ * @author d98762625 [d98762625@gmail.com]
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+ * @copyright Crown Copyright 2018
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+ * @license Apache-2.0
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+ */
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+
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+import Operation from "../Operation";
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+import Arithmetic from "../lib/Arithmetic";
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+import BigNumber from "bignumber.js";
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+
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+/**
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+ * Standard Deviation operation
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+ */
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+class StandardDeviation extends Operation {
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+
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+ /**
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+ * StandardDeviation constructor
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+ */
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+ constructor() {
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+ super();
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+
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+ this.name = "Standard Deviation";
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+ this.module = "Default";
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+ this.description = "Computes the standard deviation of a number list. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5</code> becomes <code>4.089281382128433</code>";
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+ this.inputType = "string";
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+ this.outputType = "BigNumber";
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+ this.args = [
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+ {
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+ "name": "Delimiter",
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+ "type": "option",
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+ "value": Arithmetic.DELIM_OPTIONS,
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+ }
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+ ];
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+ }
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+
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+ /**
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+ * @param {string} input
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+ * @param {Object[]} args
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+ * @returns {BigNumber}
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+ */
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+ run(input, args) {
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+ const val = Arithmetic._stdDev(Arithmetic._createNumArray(input, args[0]));
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+ return val instanceof BigNumber ? val : new BigNumber(NaN);
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+
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+ }
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+
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+}
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+
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+export default StandardDeviation;
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d98762625