math-beta

    0.0.0 • Public • Published

    beta

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    Beta function.

    The Beta function, also called the Euler integral, is defined as

    Equation for the beta function.

    It is related to the Gamma function via the following equation

    Beta function expressed in terms of the Gamma function.

    Installation

    $ npm install math-beta

    Usage

    var beta = require( 'math-beta' );

    beta( x, y )

    Evaluates the the Beta function.

    var val = beta( 0, 0 );
    // returns +Infinity
     
    val = beta( 1, 1 );
    // returns 1
     
    val = beta( -1, 2 );
    // return NaN
     
    val = beta( 5, 0.2 );
    // returns ~3.382
     
    val = beta( 4, 1 );
    // returns 0.25

    Examples

    var beta = require( 'math-beta' );
     
    for ( var x = 0; x < 10; x++ ) {
        for ( var y = 10; y > 0; y-- ) {
            console.log( 'x: %d, \t y: %d, \t f(x,y): %d', x, y, beta( x, y ) );
        }
    }

    To run the example code from the top-level application directory,

    $ node ./examples/index.js

    Tests

    Unit

    This repository uses tape for unit tests. To run the tests, execute the following command in the top-level application directory:

    $ make test

    All new feature development should have corresponding unit tests to validate correct functionality.

    Test Coverage

    This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

    $ make test-cov

    Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,

    $ make view-cov

    Browser Support

    This repository uses Testling for browser testing. To run the tests in a (headless) local web browser, execute the following command in the top-level application directory:

    $ make test-browsers

    To view the tests in a local web browser,

    $ make view-browser-tests

    License

    MIT license.

    Copyright

    Copyright © 2016. The Compute.io Authors.

    Install

    npm i math-beta

    DownloadsWeekly Downloads

    4

    Version

    0.0.0

    License

    MIT

    Last publish

    Collaborators

    • st-operations