@stdlib/math-base-special-erf
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    0.0.5 • Public • Published

    erf

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    Error function.

    The error function is defined as

    Error function.

    Installation

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

    Usage

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

    erf( x )

    Evaluates the error function.

    var y = erf( 2.0 );
    // returns ~0.9953
    
    y = erf( -1.0 );
    // returns ~-0.8427

    If provided NaN, the function returns NaN.

    var y = erf( NaN );
    // returns NaN

    The error function is an odd function; i.e., erf(-x) = -erf(x). Thus, in accordance with the IEEE 754 standard, if provided -0, the function returns -0.

    var y = erf( -0.0 );
    // returns -0.0

    Examples

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

    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 © 2016-2021. The Stdlib Authors.

    Install

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

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    8

    Version

    0.0.5

    License

    Apache-2.0

    Unpacked Size

    65.7 kB

    Total Files

    18

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser