npm package: @stdlib/ndarray-base-output-policy-enum2str
Description: Return the data type string associated with an ndarray data type enumeration constant.
Author: The Stdlib Authors
Latest version: 0.2.3

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# enum2str

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> Return the policy string associated with an output ndarray [data type policy][@stdlib/ndarray/output-dtype-policies] enumeration constant.

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<section class="intro">

</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-output-policy-enum2str
```

</section>

<section class="usage">

## Usage

```javascript
var enum2str = require( '@stdlib/ndarray-base-output-policy-enum2str' );
```

#### enum2str( policy )

Returns the policy string associated with an output ndarray [data type policy][@stdlib/ndarray/output-dtype-policies] enumeration constant.

```javascript
var str2enum = require( '@stdlib/ndarray-base-output-policy-str2enum' );

var v = str2enum( 'same' );
// returns <number>

var policy = enum2str( v );
// returns 'same'
```

If unable to resolve a policy string, the function returns `null`.

```javascript
var v = enum2str( -999999999 );
// returns null
```

</section>

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</section>

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<section class="examples">

## Examples

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

```javascript
var str2enum = require( '@stdlib/ndarray-base-output-policy-str2enum' );
var enum2str = require( '@stdlib/ndarray-base-output-policy-enum2str' );

var str = enum2str( str2enum( 'same' ) );
// returns 'same'

str = enum2str( str2enum( 'floating_point' ) );
// returns 'floating_point'

str = enum2str( str2enum( 'signed_integer' ) );
// returns 'signed_integer'

str = enum2str( str2enum( 'unsigned_integer' ) );
// returns 'unsigned_integer'

str = enum2str( str2enum( 'integer' ) );
// returns 'integer'

str = enum2str( str2enum( 'promoted' ) );
// returns 'promoted'

str = enum2str( str2enum( 'complex_floating_point' ) );
// returns 'complex_floating_point'

str = enum2str( str2enum( 'real_floating_point' ) );
// returns 'real_floating_point'
```

</section>

<!-- /.examples -->

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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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[deno-url]: https://github.com/stdlib-js/ndarray-base-output-policy-enum2str/tree/deno
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-base-output-policy-enum2str/main/LICENSE

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

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