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    An extensive math library for JavaScript and Node.js
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    math.js

    http://mathjs.org

    Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with different data types like numbers, big numbers, complex numbers, fractions, units, and matrices. Powerful and easy to use.

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    Features

    • Supports numbers, big numbers, complex numbers, fractions, units, strings, arrays, and matrices.
    • Is compatible with JavaScript's built-in Math library.
    • Contains a flexible expression parser.
    • Does symbolic computation.
    • Comes with a large set of built-in functions and constants.
    • Can be used as a command line application as well.
    • Runs on any JavaScript engine.
    • Is easily extensible.
    • Open source.

    Usage

    Math.js can be used in both node.js and in the browser.

    Install math.js using npm:

    npm install mathjs
    

    Note that when using mathjs in a TypeScript project, you will have to install type definition files too: npm install @types/mathjs.

    Or download mathjs via one of the CDN's listed on the downloads page:

        http://mathjs.org/download.html

    Math.js can be used similar to JavaScript's built-in Math library. Besides that, math.js can evaluate expressions and supports chained operations.

    // load math.js
    const math = require('mathjs')
    
    // functions and constants
    math.round(math.e, 3)             // 2.718
    math.atan2(3, -3) / math.pi       // 0.75
    math.log(10000, 10)               // 4
    math.sqrt(-4)                     // 2i
    math.pow([[-1, 2], [3, 1]], 2)    // [[7, 0], [0, 7]]
    math.derivative('x^2 + x', 'x')   // 2 * x + 1
    
    // expressions
    math.eval('12 / (2.3 + 0.7)')     // 4
    math.eval('12.7 cm to inch')      // 5 inch
    math.eval('sin(45 deg) ^ 2')      // 0.5
    math.eval('9 / 3 + 2i')           // 3 + 2i
    math.eval('det([-1, 2  3, 1])')   // -7
    
    // chaining
    math.chain(3)
        .add(4)
        .multiply(2)
        .done()  // 14
    

    See the Getting Started for a more detailed tutorial.

    Browser support

    Math.js works on any ES5 compatible JavaScript engine: node.js 4 or newer, Chrome, Firefox, Safari, Edge, and IE11.

    Though there is no official support for older browsers, math.js should still work on older browsers when using the es5-shim.

    Documentation

    Build

    First clone the project from github:

    git clone git://github.com/josdejong/mathjs.git
    cd mathjs
    

    Install the project dependencies:

    npm install
    

    Then, the project can be build by executing the build script via npm:

    npm run build
    

    This will build the library math.js and math.min.js from the source files and put them in the folder dist.

    Test

    To execute tests for the library, install the project dependencies once:

    npm install
    

    Then, the tests can be executed:

    npm test
    

    Additionally, the tests can be run on FireFox using headless mode:

    npm run test:browser
    

    To run the tests remotely on BrowserStack, first set the environment variables BROWSER_STACK_USERNAME and BROWSER_STACK_ACCESS_KEY with your username and access key and then execute:

    npm run test:browserstack
    

    To test code coverage of the tests:

    npm run coverage
    

    To see the coverage results, open the generated report in your browser:

    ./coverage/lcov-report/index.html
    

    Continuous integration testing

    Continuous integration tests are run on Travis CI and BrowserStack every time a commit is pushed to github. The test results can be checked on https://travis-ci.org/josdejong/mathjs. Travis CI runs the tests for different versions of node.js, and BrowserStack runs the tests are run on all major browsers.

    Travis CI     BrowserStack

    Thanks Travis CI and BrowserStack for the generous free hosting of this open source project!

    License

    Copyright (C) 2013-2018 Jos de Jong wjosdejong@gmail.com

    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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