npm package: @stdlib/complex-float64-base
Description: Base (i.e., lower-level) double-precision complex number functions.
Author: The Stdlib Authors
Latest version: 0.2.1

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# Complex128

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> Base (i.e., lower-level) double-precision complex floating-point number functions.

<section class="installation">

## Installation

```bash
npm install @stdlib/complex-float64-base
```

</section>

<section class="usage">

## Usage

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

#### complex

Namespace containing base (i.e., lower-level) double-precision complex floating-point number functions.

```javascript
var ns = complex;
// returns {...}
```

The namespace contains the following sub-namespaces:

<!-- <toc pattern="+(assert)"> -->

<div class="namespace-toc">

-   <span class="signature">[`assert`][@stdlib/complex/float64/base/assert]</span><span class="delimiter">: </span><span class="description">base (i.e., lower-level) double-precision complex floating-point number assertion functions.</span>

</div>

<!-- </toc> -->

The namespace contains the following functions:

<!-- <toc pattern="*"> -->

<div class="namespace-toc">

-   <span class="signature">[`add( z1, z2 )`][@stdlib/complex/float64/base/add]</span><span class="delimiter">: </span><span class="description">add two double-precision complex floating-point numbers.</span>
-   <span class="signature">[`add3( z1, z2, z3 )`][@stdlib/complex/float64/base/add3]</span><span class="delimiter">: </span><span class="description">compute the sum of three double-precision complex floating-point numbers.</span>
-   <span class="signature">[`div( z1, z2 )`][@stdlib/complex/float64/base/div]</span><span class="delimiter">: </span><span class="description">divide two double-precision complex floating-point numbers.</span>
-   <span class="signature">[`identity( z )`][@stdlib/complex/float64/base/identity]</span><span class="delimiter">: </span><span class="description">evaluate the identity function of a double-precision complex floating-point number.</span>
-   <span class="signature">[`muladd( alpha, x, y )`][@stdlib/complex/float64/base/mul-add]</span><span class="delimiter">: </span><span class="description">perform a multiply-add operation involving three double-precision complex floating-point numbers.</span>
-   <span class="signature">[`mul( z1, z2 )`][@stdlib/complex/float64/base/mul]</span><span class="delimiter">: </span><span class="description">multiply two double-precision complex floating-point numbers.</span>
-   <span class="signature">[`neg( z )`][@stdlib/complex/float64/base/neg]</span><span class="delimiter">: </span><span class="description">negate a double-precision complex floating-point number.</span>
-   <span class="signature">[`scale( alpha, z )`][@stdlib/complex/float64/base/scale]</span><span class="delimiter">: </span><span class="description">scale a double-precision complex floating-point number by a real-valued double-precision floating-point scalar constant.</span>
-   <span class="signature">[`sub( z1, z2 )`][@stdlib/complex/float64/base/sub]</span><span class="delimiter">: </span><span class="description">subtract two double-precision complex floating-point numbers.</span>

</div>

<!-- </toc> -->

</section>

<!-- /.usage -->

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

<section class="notes">

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- TODO: better examples -->

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

```javascript
var objectKeys = require( '@stdlib/utils-keys' );
var ns = require( '@stdlib/complex-float64-base' );

console.log( objectKeys( ns ) );
```

</section>

<!-- /.examples -->

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<section class="related">

</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

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

</section>

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