npm package: @stdlib/blas-gswap
Description: Interchange two vectors.
Author: The Stdlib Authors
Latest version: 0.2.2

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<details>
  <summary>
    About stdlib...
  </summary>
  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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</details>

# gswap

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Interchange two vectors.

<section class="intro">

</section>

<!-- /.intro -->

<section class="installation">

## Installation

```bash
npm install @stdlib/blas-gswap
```

</section>

<section class="usage">

## Usage

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

#### gswap( x, y )

Interchanges two vectors `x` and `y`.

```javascript
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`][@stdlib/ndarray/array] or an array-like object.
-   **y**: a 1-dimensional [`ndarray`][@stdlib/ndarray/array] or an array-like object.

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   `gswap()` provides a higher-level interface to the [BLAS][blas] level 1 function [`gswap`][@stdlib/blas/base/gswap].
-   In general, for best performance, especially for large vectors, provide 1-dimensional [`ndarrays`][@stdlib/ndarray/array] whose underlying data type is either `float64` or `float32`.

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
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 );
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/blas-base/gswap`][@stdlib/blas/base/gswap]</span><span class="delimiter">: </span><span class="description">interchange two vectors.</span>
-   <span class="package-name">[`@stdlib/blas-dswap`][@stdlib/blas/dswap]</span><span class="delimiter">: </span><span class="description">interchange two double-precision floating-point vectors.</span>
-   <span class="package-name">[`@stdlib/blas-sswap`][@stdlib/blas/sswap]</span><span class="delimiter">: </span><span class="description">interchange two single-precision floating-point vectors.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->


<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

<!-- /.stdlib -->

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<section class="links">

[npm-image]: http://img.shields.io/npm/v/@stdlib/blas-gswap.svg
[npm-url]: https://npmjs.org/package/@stdlib/blas-gswap

[test-image]: https://github.com/stdlib-js/blas-gswap/actions/workflows/test.yml/badge.svg?branch=v0.2.2
[test-url]: https://github.com/stdlib-js/blas-gswap/actions/workflows/test.yml?query=branch:v0.2.2

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/blas-gswap/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/blas-gswap?branch=main

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[stdlib]: https://github.com/stdlib-js/stdlib

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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/blas-gswap/tree/deno
[deno-readme]: https://github.com/stdlib-js/blas-gswap/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/blas-gswap/tree/umd
[umd-readme]: https://github.com/stdlib-js/blas-gswap/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/blas-gswap/tree/esm
[esm-readme]: https://github.com/stdlib-js/blas-gswap/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/blas-gswap/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/blas-gswap/main/LICENSE

[blas]: http://www.netlib.org/blas

[@stdlib/ndarray/array]: https://www.npmjs.com/package/@stdlib/ndarray-array

<!-- <related-links> -->

[@stdlib/blas/base/gswap]: https://www.npmjs.com/package/@stdlib/blas-base-gswap

[@stdlib/blas/dswap]: https://www.npmjs.com/package/@stdlib/blas-dswap

[@stdlib/blas/sswap]: https://www.npmjs.com/package/@stdlib/blas-sswap

<!-- </related-links> -->

</section>

<!-- /.links -->