math-float64-get-high-word

    1.0.0 • Public • Published

    High Word

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    Returns an unsigned 32-bit integer corresponding to the more significant 32 bits of a double-precision floating-point number.

    Installation

    $ npm install math-float64-get-high-word

    Usage

    var highWord = require( 'math-float64-get-high-word' );

    highWord( x )

    Returns an unsigned 32-bit integer corresponding to the more significant 32 bits of a double-precision floating-point number.

    var w = highWord( 3.14e201 );
    // returns 1774486211 => 01101001110001001000001011000011

    Examples

    var floor = require( 'math-floor' );
    var pow = require( 'math-power' );
    var highWord = require( 'math-float64-get-high-word' );
     
    var frac;
    var exp;
    var w;
    var x;
    var i;
     
    for ( i = 0; i < 100; i++ ) {
        frac = Math.random() * 10;
        exp = -floor( Math.random()*324 );
        x = frac * pow( 10, exp );
        w = highWord( x );
        console.log( 'x: %d. high word: %d.', x, w );
    }

    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-float64-get-high-word

    DownloadsWeekly Downloads

    10,338

    Version

    1.0.0

    License

    MIT

    Last publish

    Collaborators

    • kgryte