Removed unneeded files
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const foo = require('./mathtest')
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test('sdf', () => {
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expect(1).toBe(2)
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})
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// This example demonstrates importing a custom data type,
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// and extending an existing function (add) with support for this data type.
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const { create, factory, all } = require('mathjs');
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const math = create(all)
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// factory function which defines a new data type FunctionalDistribution
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const createFunctionalDistribution = factory('FunctionalDistribution', ['typed'], ({ typed }) => {
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// create a new data type
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function FunctionalDistribution (value) {
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this.value = value
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}
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FunctionalDistribution.prototype.isFunctionalDistribution = true
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FunctionalDistribution.prototype.toString = function () {
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return 'FunctionalDistribution:' + this.value
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}
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// define a new data type with typed-function
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typed.addType({
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name: 'FunctionalDistribution',
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test: function (x) {
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// test whether x is of type FunctionalDistribution
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return x && x.isFunctionalDistribution === true
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}
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})
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return FunctionalDistribution
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})
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// function add which can add the FunctionalDistribution data type
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// When imported in math.js, the existing function `add` with support for
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// FunctionalDistribution, because both implementations are typed-functions and do not
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// have conflicting signatures.
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const createAddFunctionalDistribution = factory('add', ['typed', 'FunctionalDistribution'], ({ typed, FunctionalDistribution }) => {
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return typed('add', {
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'FunctionalDistribution, FunctionalDistribution': function (a, b) {
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return new FunctionalDistribution(a.value + b.value)
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}
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})
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})
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const createSubtractFunctionalDistribution = factory('subtract', ['typed', 'FunctionalDistribution'], ({ typed, FunctionalDistribution }) => {
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return typed('subtract', {
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'FunctionalDistribution, FunctionalDistribution': function (a, b) {
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return new FunctionalDistribution(a.value - b.value)
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}
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})
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})
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// import the new data type and function
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math.import([
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createFunctionalDistribution,
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createAddFunctionalDistribution,
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createSubtractFunctionalDistribution
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])
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// use the new type
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const ans = math.chain(new math.FunctionalDistribution(2)).subtract(new math.FunctionalDistribution(3))
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// ans = FunctionalDistribution(5)
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console.log(ans.toString())
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// outputs 'FunctionalDistribution:5'
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module.exports = ans
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