npm package: @stdlib/blas-ext-base-ndarray-gsorthp
Description: Sort a one-dimensional ndarray using heapsort.
Author: The Stdlib Authors
Latest version: 0.1.1

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# gsorthp

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

> Sort a one-dimensional ndarray using heapsort.

<section class="intro">

</section>

<!-- /.intro -->

<section class="installation">

## Installation

```bash
npm install @stdlib/blas-ext-base-ndarray-gsorthp
```

</section>

<section class="usage">

## Usage

```javascript
var gsorthp = require( '@stdlib/blas-ext-base-ndarray-gsorthp' );
```

#### gsorthp( arrays )

Sorts a one-dimensional ndarray using heapsort.

```javascript
var scalar2ndarray = require( '@stdlib/ndarray-from-scalar' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var ndarray = require( '@stdlib/ndarray-base-ctor' );

var xbuf = [ 1.0, -2.0, 3.0, -4.0 ];
var x = new ndarray( 'generic', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );

var order = scalar2ndarray( 1.0, {
    'dtype': 'generic'
});

var out = gsorthp( [ x, order ] );
// returns <ndarray>

var arr = ndarray2array( out );
// returns [ -4.0, -2.0, 1.0, 3.0 ]
```

The function has the following parameters:

-   **arrays**: array-like object containing a one-dimensional input ndarray and a zero-dimensional ndarray specifying the sort order.

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   The input ndarray is sorted **in-place** (i.e., the input ndarray is **mutated**).
-   When the sort order is less than zero, the input ndarray is sorted in **decreasing** order. When the sort order is greater than zero, the input ndarray is sorted in **increasing** order. When the sort order is equal to zero, the input ndarray is left unchanged.

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var ndarray = require( '@stdlib/ndarray-base-ctor' );
var scalar2ndarray = require( '@stdlib/ndarray-from-scalar' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var ndarraylike2scalar = require( '@stdlib/ndarray-base-ndarraylike2scalar' );
var gsorthp = require( '@stdlib/blas-ext-base-ndarray-gsorthp' );

var xbuf = discreteUniform( 10, -100, 100, {
    'dtype': 'generic'
});
var x = new ndarray( 'generic', xbuf, [ xbuf.length ], [ 1 ], 0, 'row-major' );
console.log( ndarray2array( x ) );

var order = scalar2ndarray( 1.0, {
    'dtype': 'generic'
});
console.log( 'Order:', ndarraylike2scalar( order ) );

gsorthp( [ x, order ] );
console.log( ndarray2array( x ) );
```

</section>

<!-- /.examples -->

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<section class="related">

</section>

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<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].

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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