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

    gammaln

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    Natural logarithm of the gamma function.

    Installation

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

    Usage

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

    gammaln( x )

    Evaluates the natural logarithm of the gamma function.

    var v = gammaln( 2.0 );
    // returns 0.0
    
    v = gammaln( 1.0 );
    // returns 0.0
    
    v = gammaln( 4.0 );
    // returns ~1.792
    
    v = gammaln( -0.5 );
    // returns ~1.266
    
    v = gammaln( 0.5 );
    // returns ~0.572
    
    v = gammaln( 0.0 );
    // returns Infinity
    
    v = gammaln( NaN );
    // returns NaN

    Examples

    var linspace = require( '@stdlib/array-base-linspace' );
    var gammaln = require( '@stdlib/math-base-special-gammaln' );
    
    var x = linspace( -10.0, 10.0, 100 );
    
    var i;
    for ( i = 0; i < x.length; i++ ) {
        console.log( 'x: %d, f(x): %d', x[ i ], gammaln( x[ i ] ) );
    }

    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-gammaln

    Homepage

    stdlib.io

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    14,678

    Version

    0.0.6

    License

    Apache-2.0

    Unpacked Size

    60 kB

    Total Files

    19

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    Collaborators

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