@stdlib/number-float32-base-significand
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    0.0.6 • Public • Published

    Significand

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    Return an integer corresponding to the significand of a single-precision floating-point number.

    Installation

    npm install @stdlib/number-float32-base-significand

    Usage

    var significandf = require( '@stdlib/number-float32-base-significand' );

    significandf( x )

    Returns an integer corresponding to the significand of a single-precision floating-point number.

    var toFloat32 = require( '@stdlib/number-float64-base-to-float32' );
    
    var s = significandf( toFloat32( 3.14e34 ) ); // => 10000011000010001110111
    // returns 4293751
    
    s = significandf( toFloat32( 3.14e-34 ) ); // => 10100001011000001010101
    // returns 5288021
    
    s = significandf( toFloat32( -3.14 ) ); // => 10010001111010111000011
    // returns 4781507
    
    s = significandf( 0.0 ); // => 00000000000000000000000
    // returns 0
    
    s = significandf( NaN ); // => 10000000000000000000000
    // returns 4194304

    Examples

    var randu = require( '@stdlib/random-base-randu' );
    var round = require( '@stdlib/math-base-special-round' );
    var pow = require( '@stdlib/math-base-special-pow' );
    var toFloat32 = require( '@stdlib/number-float64-base-to-float32' );
    var significandf = require( '@stdlib/number-float32-base-significand' );
    
    var frac;
    var exp;
    var x;
    var s;
    var i;
    
    // Generate random numbers and extract their significands...
    for ( i = 0; i < 100; i++ ) {
        frac = randu() * 10.0;
        exp = round( randu()*44.0 ) - 22;
        x = frac * pow( 10.0, exp );
        x = toFloat32( x );
        s = significandf( x );
        console.log( 'x: %d. significand: %d.', x, s );
    }

    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/number-float32-base-significand

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    37

    Version

    0.0.6

    License

    Apache-2.0

    Unpacked Size

    38.9 kB

    Total Files

    9

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser