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Complex128

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

Double-precision complex floating-point number functions.

## Installation

bash
npm install @stdlib/complex-float64

Alternatively,

- To load the package in a website via a script tag without installation and bundlers, use the [ES Module][es-module] available on the [esm][esm-url] branch (see [README][esm-readme]).
- If you are using Deno, visit the [deno][deno-url] branch (see [README][deno-readme] for usage intructions).
- For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [umd][umd-url] branch (see [README][umd-readme]).

The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.

To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.

## Usage

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

#### complex

Namespace containing double-precision complex floating-point number functions.

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

The namespace contains the following sub-namespaces:

- [base][@stdlib/complex/float64/base]: base (i.e., lower-level) double-precision complex floating-point number functions.

The namespace contains the following functions:

- [conj( z )][@stdlib/complex/float64/conj]: return the complex conjugate of a double-precision complex floating-point number.
- [Complex128( real, imag )][@stdlib/complex/float64/ctor]: 128-bit complex number.
- [imag( z )][@stdlib/complex/float64/imag]: return the imaginary component of a double-precision complex floating-point number.
- [parseComplex128( str )][@stdlib/complex/float64/parse]: parse a string representation of a 128-bit complex number.
- [real( z )][@stdlib/complex/float64/real]: return the real component of a double-precision complex floating-point number.
- [reim( z )][@stdlib/complex/float64/reim]: return the real and imaginary components of a double-precision complex floating-point number.
- [reviveComplex128( key, value )][@stdlib/complex/float64/reviver]: revive a JSON-serialized 128-bit complex number.

## Examples

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

console.log( objectKeys( ns ) );

*

## 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]

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## License

See [LICENSE][stdlib-license].

## Copyright

Copyright © 2016-2025. The Stdlib [Authors][stdlib-authors].