npm package: @stdlib/ndarray-base-bytes-per-element
Description: Return the number of bytes per element for a provided underlying ndarray data type.
Author: The Stdlib Authors
Latest version: 0.3.1

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# Bytes per Element

[![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 number of bytes per element for a provided underlying [ndarray data type][@stdlib/ndarray/dtypes].

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<section class="intro">

</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-bytes-per-element
```

</section>

<section class="usage">

## Usage

```javascript
var bytesPerElement = require( '@stdlib/ndarray-base-bytes-per-element' );
```

#### bytesPerElement( dtype )

Returns the number of bytes per element for a provided underlying [ndarray data type][@stdlib/ndarray/dtypes].

```javascript
var nbytes = bytesPerElement( 'float64' );
// returns 8

nbytes = bytesPerElement( 'generic' );
// returns null
```

If provided an unknown or unsupported data type, the function returns `null`.

```javascript
var nbytes = bytesPerElement( 'foobar' );
// returns null
```

</section>

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<section class="examples">

## Examples

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

```javascript
var bytesPerElement = require( '@stdlib/ndarray-base-bytes-per-element' );

var dtypes = [
    'float64',
    'float32',
    'int8',
    'uint8',
    'uint8c',
    'int16',
    'uint16',
    'int32',
    'uint32',
    'binary',
    'generic',
    'foobar'
];

var nbytes;
var i;
for ( i = 0; i < dtypes.length; i++ ) {
    nbytes = bytesPerElement( dtypes[ i ] );
    nbytes = ( nbytes ) ? nbytes+' bytes' : 'null';
    console.log( '%s => %s', dtypes[ i ], nbytes );
}
```

</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

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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