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    math-absolute-difference

    1.0.0 • Public • Published

    Absolute Difference

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    Computes the absolute difference of two real numbers.

    The absolute difference of two real numbers is defined as the absolute value of their difference.

    Absolute difference

    Installation

    $ npm install math-absolute-difference

    Usage

    var diff = require( 'math-absolute-difference' );

    diff( x, y )

    Computes the absolute difference of two real numbers.

    var d = diff( 2, 5 );
    // returns 3
     
    = diff( -1, 3.14 );
    // returns ~4.14
     
    = diff( 10.1, -2.05 );
    // returns ~12.15
     
    = diff( -0, 0 );
    // returns 0
     
    = diff( NaN, 5 );
    // returns NaN
     
    = diff( 5, NaN );
    // returns NaN
     
    var PINF = Number.POSITIVE_INFINITY;
    var NINF = Number.NEGATIVE_INFINITY;
     
    = diff( PINF, PINF );
    // returns NaN
     
    = diff( NINF, NINF );
    // returns NaN
     
    = diff( PINF, NINF );
    // returns +infinity
     
    = diff( NINF, PINF );
    // returns +infinity

    Examples

    var diff = require( 'math-absolute-difference' );
     
    var x;
    var y;
    var d;
    var i;
     
    for ( i = 0; i < 100; i++ ) {
        x = Math.random()*1e4 - 1e2;
        y = Math.random()*1e4 - 1e2;
        d = diff( x, y );
        console.log( 'x = %d. y = %d. |x-y| = %d.', x, y, d );
    }

    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-absolute-difference

    DownloadsWeekly Downloads

    1

    Version

    1.0.0

    License

    MIT

    Last publish

    Collaborators

    • kgryte