npm package: @stdlib/array-next-dtype
Description: Return the next larger array data type of the same kind.
Author: The Stdlib Authors
Latest version: 0.3.1

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<details>
  <summary>
    About stdlib...
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  <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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# nextDataType

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

> Return the next larger array [data type][@stdlib/array/dtypes] of the same kind.

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</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/array-next-dtype
```

</section>

<section class="usage">

## Usage

```javascript
var nextDataType = require( '@stdlib/array-next-dtype' );
```

#### nextDataType( \[dtype] )

If provided a `dtype` argument, returns the next larger array [data type][@stdlib/array/dtypes] of the same kind.

```javascript
var out = nextDataType( 'float32' );
// returns 'float64'
```

If a [data type][@stdlib/array/dtypes] does not have a next larger [data type][@stdlib/array/dtypes] or the next larger data type is not supported, the function returns `-1`.

```javascript
var out = nextDataType( 'complex128' );
// returns -1
```

If not provided a `dtype` argument, the function returns a table.

```javascript
var out = nextDataType();
// returns {...}
```

If provided an unrecognized or unsupported `dtype`, the function returns `null`.

```javascript
var out = nextDataType( 'foo' );
// returns null
```

</section>

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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

</section>

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<section class="examples">

## Examples

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

```javascript
var dtypes = require( '@stdlib/array-dtypes' );
var nextDataType = require( '@stdlib/array-next-dtype' );

var DTYPES;
var dt;
var i;

// Get the list of supported array data types:
DTYPES = dtypes();

// Print the next larger data type for each supported data type...
for ( i = 0; i < DTYPES.length; i++ ) {
    dt = nextDataType( DTYPES[ i ] );
    console.log( '%s => %s', DTYPES[ i ], dt );
}
```

</section>

<!-- /.examples -->

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</section>

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<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/array-dtype`][@stdlib/array/dtype]</span><span class="delimiter">: </span><span class="description">return the data type of an array.</span>
-   <span class="package-name">[`@stdlib/array-dtypes`][@stdlib/array/dtypes]</span><span class="delimiter">: </span><span class="description">list of array data types.</span>

</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].

#### Community

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

---

## License

See [LICENSE][stdlib-license].


## Copyright

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

</section>

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

[test-image]: https://github.com/stdlib-js/array-next-dtype/actions/workflows/test.yml/badge.svg?branch=v0.3.1
[test-url]: https://github.com/stdlib-js/array-next-dtype/actions/workflows/test.yml?query=branch:v0.3.1

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/array-next-dtype/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/array-next-dtype?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/array-next-dtype/tree/deno
[deno-readme]: https://github.com/stdlib-js/array-next-dtype/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/array-next-dtype/tree/umd
[umd-readme]: https://github.com/stdlib-js/array-next-dtype/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/array-next-dtype/tree/esm
[esm-readme]: https://github.com/stdlib-js/array-next-dtype/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/array-next-dtype/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/array-next-dtype/main/LICENSE

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

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

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

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</section>

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