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

    Havercosine

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    Compute the half-value versed cosine.

    The half-value versed cosine is defined as

    Haversed cosine.

    Installation

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

    Usage

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

    havercos( x )

    Computes the half-value versed cosine (in radians).

    var v = havercos( 0.0 );
    // returns 1.0
    
    v = havercos( 3.141592653589793/2.0 );
    // returns 0.5
    
    v = havercos( -3.141592653589793/6.0 );
    // returns ~0.9330

    Examples

    var linspace = require( '@stdlib/array-linspace' );
    var TWO_PI = require( '@stdlib/constants-float64-two-pi' );
    var havercos = require( '@stdlib/math-base-special-havercos' );
    
    var x = linspace( 0.0, TWO_PI, 100 );
    var i;
    
    for ( i = 0; i < x.length; i++ ) {
        console.log( havercos( x[ i ] ) );
    }

    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-havercos

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    6

    Version

    0.0.5

    License

    Apache-2.0

    Unpacked Size

    44 kB

    Total Files

    10

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    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser