npm package: @stdlib/ndarray-base-assert-is-data-type
Description: Test if an input value is a supported ndarray data type.
Author: The Stdlib Authors
Latest version: 0.2.3

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# isDataType

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> Test if an input value is a supported ndarray data type.

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-assert-is-data-type
```

</section>

<section class="usage">

## Usage

```javascript
var isDataType = require( '@stdlib/ndarray-base-assert-is-data-type' );
```

#### isDataType( value )

Tests if an input value is a supported ndarray data type.

```javascript
var bool = isDataType( 'float32' );
// returns true

bool = isDataType( 'int32' );
// returns true
```

</section>

<!-- /.usage -->

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

<section class="notes">

## Notes

-   The function returns `true` when provided any supported ndarray [data type][@stdlib/ndarray/dtypes], a [struct][@stdlib/dstructs/struct] constructor describing a fixed-width composite data type, or a [`DataType`][@stdlib/ndarray/dtype-ctor] instance.

</section>

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<!-- Package usage examples. -->

<section class="examples">

## Examples

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

```javascript
var isDataType = require( '@stdlib/ndarray-base-assert-is-data-type' );

var bool = isDataType( 'binary' );
// returns true

bool = isDataType( 'float32' );
// returns true

bool = isDataType( 'float64' );
// returns true

bool = isDataType( 'generic' );
// returns true

bool = isDataType( 'int16' );
// returns true

bool = isDataType( 'int32' );
// returns true

bool = isDataType( 'int8' );
// returns true

bool = isDataType( 'uint16' );
// returns true

bool = isDataType( 'uint32' );
// returns true

bool = isDataType( 'uint8' );
// returns true

bool = isDataType( 'uint8c' );
// returns true

bool = isDataType( '' );
// returns false

bool = isDataType( 'foo' );
// returns false
```

</section>

<!-- /.examples -->

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<section class="related">

</section>

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* * *

## 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].

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[coverage-url]: https://codecov.io/github/stdlib-js/ndarray-base-assert-is-data-type?branch=main

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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/ndarray-base-assert-is-data-type/tree/deno
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-base-assert-is-data-type/main/LICENSE

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

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

[@stdlib/dstructs/struct]: https://www.npmjs.com/package/@stdlib/dstructs-struct

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