Novices Performing Miracles

    @stdlib/blas-gswap
    TypeScript icon, indicating that this package has built-in type declarations

    0.0.6 • Public • Published

    gswap

    NPM version Build Status Coverage Status

    Interchange two vectors.

    Installation

    npm install @stdlib/blas-gswap

    Usage

    var gswap = require( '@stdlib/blas-gswap' );

    gswap( x, y )

    Interchanges two vectors x and y.

    var Float64Array = require( '@stdlib/array-float64' );
    var array = require( '@stdlib/ndarray-array' );
    
    var x = array( new Float64Array( [ 4.0, 2.0, -3.0, 5.0, -1.0 ] ) );
    var y = array( new Float64Array( [ 2.0, 6.0, -1.0, -4.0, 8.0 ] ) );
    
    gswap( x, y );
    
    var xbuf = x.data;
    // returns <Float64Array>[ 2.0, 6.0, -1.0, -4.0, 8.0 ]
    
    var ybuf = y.data;
    // returns <Float64Array>[ 4.0, 2.0, -3.0, 5.0, -1.0 ]

    The function has the following parameters:

    • x: a 1-dimensional ndarray or an array-like object.
    • y: a 1-dimensional ndarray or an array-like object.

    Notes

    • gswap() provides a higher-level interface to the BLAS level 1 function gswap.
    • In general, for best performance, especially for large vectors, provide 1-dimensional ndarrays whose underlying data type is either float64 or float32.

    Examples

    var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
    var filledarrayBy = require( '@stdlib/array-filled-by' );
    var gswap = require( '@stdlib/blas-gswap' );
    
    var rand1 = discreteUniform( 0, 100 );
    var x = filledarrayBy( 10, 'generic', rand1 );
    console.log( x );
    
    var rand2 = discreteUniform( 0, 10 );
    var y = filledarrayBy( 10, 'generic', rand2 );
    console.log( y );
    
    gswap( x, y );
    console.log( x );
    console.log( y );

    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.

    Community

    Chat


    License

    See LICENSE.

    Copyright

    Copyright © 2016-2022. The Stdlib Authors.

    Install

    npm i @stdlib/blas-gswap

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    39

    Version

    0.0.6

    License

    Apache-2.0

    Unpacked Size

    43.4 kB

    Total Files

    9

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser