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

    sincos

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    Simultaneously compute the sine and cosine of a number.

    Installation

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

    Usage

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

    sincos( [out,] x )

    Simultaneously computes the sine and cosine of a number (in radians).

    var v = sincos( 0.0 );
    // returns [ ~0.0, ~1.0 ]
    
    v = sincos( 3.141592653589793/2.0 );
    // returns [ ~1.0, ~0.0 ]
    
    v = sincos( -3.141592653589793/6.0 );
    // returns [ ~-0.5, ~0.866 ]

    By default, the function returns the sine and cosine as a two-element array. To avoid extra memory allocation, the function supports providing an output (destination) object.

    var Float64Array = require( '@stdlib/array-float64' );
    
    var out = new Float64Array( 2 );
    
    var v = sincos( out, 0.0 );
    // returns <Float64Array>[ ~0.0, ~1.0 ]
    
    var bool = ( v === out );
    // returns true

    Examples

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

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    55

    Version

    0.0.5

    License

    Apache-2.0 AND BSL-1.0

    Unpacked Size

    45.7 kB

    Total Files

    11

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser