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    @stdlib/number-float32-base-to-binary-string
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    0.0.7 • Public • Published

    To Binary String

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    Return a string giving the literal bit representation of a single-precision floating-point number.

    Installation

    npm install @stdlib/number-float32-base-to-binary-string

    Usage

    var toBinaryStringf = require( '@stdlib/number-float32-base-to-binary-string' );

    toBinaryStringf( x )

    Returns a string giving the literal bit representation of a single-precision floating-point number.

    var toFloat32 = require( '@stdlib/number-float64-base-to-float32' );
    
    var str = toBinaryStringf( toFloat32( 4.0 ) );
    // returns '01000000100000000000000000000000'
    
    str = toBinaryStringf( toFloat32( 3.141592653589793 ) );
    // returns '01000000010010010000111111011011'
    
    str = toBinaryStringf( toFloat32( -1.0e38 ) );
    // returns '11111110100101100111011010011001'

    The function handles subnormals.

    var toFloat32 = require( '@stdlib/number-float64-base-to-float32' );
    
    str = toBinaryStringf( toFloat32( -3.14e-39 ) );
    // returns '10000000001000100011000100001011'
    
    str = toBinaryStringf( toFloat32( 1.4e-45 ) );
    // returns '00000000000000000000000000000001'

    The function handles special values.

    var PINF = require( '@stdlib/constants-float32-pinf' );
    var NINF = require( '@stdlib/constants-float32-ninf' );
    
    str = toBinaryStringf( 0.0 );
    // returns '00000000000000000000000000000000'
    
    str = toBinaryStringf( -0.0 );
    // returns '10000000000000000000000000000000'
    
    str = toBinaryStringf( NaN );
    // returns '01111111110000000000000000000000'
    
    str = toBinaryStringf( PINF );
    // returns '01111111100000000000000000000000'
    
    str = toBinaryStringf( NINF );
    // returns '11111111100000000000000000000000'

    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 float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );
    var toBinaryStringf = require( '@stdlib/number-float32-base-to-binary-string' );
    
    var frac;
    var sign;
    var exp;
    var b;
    var x;
    var i;
    
    // Convert random numbers to literal bit representations...
    for ( i = 0; i < 100; i++ ) {
        if ( randu() < 0.5 ) {
            sign = -1.0;
        } else {
            sign = 1.0;
        }
        frac = randu() * 10.0;
        exp = round( randu()*100.0 );
        if ( randu() < 0.5 ) {
            exp = -exp;
        }
        x = sign * frac * pow( 2.0, exp );
        x = float64ToFloat32( x );
        b = toBinaryStringf( x );
        console.log( b );
    }

    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-to-binary-string

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    62

    Version

    0.0.7

    License

    Apache-2.0

    Unpacked Size

    35 kB

    Total Files

    11

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser