npm package: @stdlib/constants-complex128-nan
Description: Canonical double-precision complex floating-point NaN.
Author: The Stdlib Authors
Latest version: 0.2.3

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

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

> Canonical double-precision complex floating-point `NaN`.

<section class="installation">

## Installation

```bash
npm install @stdlib/constants-complex128-nan
```

</section>

<section class="usage">

## Usage

```javascript
var COMPLEX128_NAN = require( '@stdlib/constants-complex128-nan' );
```

#### COMPLEX128_NAN

Canonical double-precision complex floating-point `NaN`.

```javascript
var real = require( '@stdlib/complex-float64-real' );
var imag = require( '@stdlib/complex-float64-imag' );

var re = real( COMPLEX128_NAN );
// returns NaN

var im = imag( COMPLEX128_NAN );
// returns NaN
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var real = require( '@stdlib/complex-float64-real' );
var imag = require( '@stdlib/complex-float64-imag' );
var Complex128Array = require( '@stdlib/array-complex128' );
var COMPLEX128_NAN = require( '@stdlib/constants-complex128-nan' );

var x = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0 ] );
// returns <Complex128Array>

var v = x.get( 0 );
// returns <Complex128>

var re = real( v );
// returns 1.0

var im = imag( v );
// returns 2.0

x.fill( COMPLEX128_NAN );

v = x.get( 0 );
// returns <Complex128>

re = real( v );
// returns NaN

im = imag( v );
// returns NaN
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/constants-complex64/nan`][@stdlib/constants/complex64/nan]</span><span class="delimiter">: </span><span class="description">canonical single-precision complex floating-point NaN.</span>

</section>

<!-- /.related -->

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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>

<!-- /.stdlib -->

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[npm-url]: https://npmjs.org/package/@stdlib/constants-complex128-nan

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[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/constants-complex128-nan/main.svg
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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/constants-complex128-nan/tree/deno
[deno-readme]: https://github.com/stdlib-js/constants-complex128-nan/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/constants-complex128-nan/tree/umd
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[esm-url]: https://github.com/stdlib-js/constants-complex128-nan/tree/esm
[esm-readme]: https://github.com/stdlib-js/constants-complex128-nan/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/constants-complex128-nan/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/constants-complex128-nan/main/LICENSE

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

[@stdlib/constants/complex64/nan]: https://www.npmjs.com/package/@stdlib/constants-complex64-nan

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</section>

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