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    @stdlib/math-base-special-trunc2
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    0.0.6 • Public • Published

    trunc2

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    Round a numeric value to the nearest power of two toward zero.

    Installation

    npm install @stdlib/math-base-special-trunc2

    Usage

    var trunc2 = require( '@stdlib/math-base-special-trunc2' );

    trunc2( x )

    Rounds a numeric value to the nearest power of two toward zero.

    var v = trunc2( -4.2 );
    // returns -4.0
    
    v = trunc2( -4.5 );
    // returns -4.0
    
    v = trunc2( -4.6 );
    // returns -4.0
    
    v = trunc2( 9.99999 );
    // returns 8.0
    
    v = trunc2( 9.5 );
    // returns 8.0
    
    v = trunc2( 13.0 );
    // returns 8.0
    
    v = trunc2( -13.0 );
    // returns -8.0
    
    v = trunc2( 0.0 );
    // returns 0.0
    
    v = trunc2( -0.0 );
    // returns -0.0
    
    v = trunc2( Infinity );
    // returns Infinity
    
    v = trunc2( -Infinity );
    // returns -Infinity
    
    v = trunc2( NaN );
    // returns NaN

    Examples

    var randu = require( '@stdlib/random-base-randu' );
    var trunc2 = require( '@stdlib/math-base-special-trunc2' );
    
    var x;
    var v;
    var i;
    
    for ( i = 0; i < 100; i++ ) {
        x = (randu()*100.0) - 50.0;
        v = trunc2( x );
        console.log( 'Value: %d. Rounded: %d.', x, v );
    }

    See Also


    Notice

    This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

    For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

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    License

    See LICENSE.

    Copyright

    Copyright © 2016-2022. The Stdlib Authors.

    Install

    npm i @stdlib/math-base-special-trunc2

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    76

    Version

    0.0.6

    License

    Apache-2.0

    Unpacked Size

    38.2 kB

    Total Files

    9

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser