67 lines
1.4 KiB
JavaScript
Executable File
67 lines
1.4 KiB
JavaScript
Executable File
/**
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* Numerical base operations.
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*
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*
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* @namespace
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*/
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const Base = {
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/**
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* @constant
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* @default
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*/
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DEFAULT_RADIX: 36,
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/**
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* To Base operation.
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*
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* @param {number} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runTo: function(input, args) {
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if (!input) {
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throw ("Error: Input must be a number");
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}
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const radix = args[0] || Base.DEFAULT_RADIX;
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if (radix < 2 || radix > 36) {
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throw "Error: Radix argument must be between 2 and 36";
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}
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return input.toString(radix);
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},
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/**
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* From Base operation.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {number}
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*/
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runFrom: function(input, args) {
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const radix = args[0] || Base.DEFAULT_RADIX;
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if (radix < 2 || radix > 36) {
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throw "Error: Radix argument must be between 2 and 36";
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}
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let number = input.replace(/\s/g, "").split("."),
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result = parseInt(number[0], radix) || 0;
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if (number.length === 1) return result;
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// Fractional part
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for (let i = 0; i < number[1].length; i++) {
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const digit = parseInt(number[1][i], radix);
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result += digit / Math.pow(radix, i+1);
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}
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return result;
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},
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};
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export default Base;
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