https://github.com/stdlib-js/assert-is-almost-equal-complex128array
Test if two arguments are both Complex128Arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).
https://github.com/stdlib-js/assert-is-almost-equal-complex128array
assert assertion equal is isequal issame issamevalue isstrictequal javascript node node-js nodejs same stdlib strict type util utilities utility utils
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Test if two arguments are both Complex128Arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).
- Host: GitHub
- URL: https://github.com/stdlib-js/assert-is-almost-equal-complex128array
- Owner: stdlib-js
- License: apache-2.0
- Created: 2025-07-20T04:02:42.000Z (9 months ago)
- Default Branch: main
- Last Pushed: 2026-04-11T04:30:20.000Z (17 days ago)
- Last Synced: 2026-04-11T05:33:16.401Z (17 days ago)
- Topics: assert, assertion, equal, is, isequal, issame, issamevalue, isstrictequal, javascript, node, node-js, nodejs, same, stdlib, strict, type, util, utilities, utility, utils
- Language: JavaScript
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 1.44 MB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Security: SECURITY.md
- Notice: NOTICE
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README
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# isAlmostEqualComplex128Array
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Test if two arguments are both [Complex128Arrays][@stdlib/array/complex128] and contain respective elements which are [approximately equal][@stdlib/assert/is-almost-equal] within a specified number of ULPs (units in the last place).
## Installation
```bash
npm install @stdlib/assert-is-almost-equal-complex128array
```
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 isAlmostEqualComplex128Array = require( '@stdlib/assert-is-almost-equal-complex128array' );
```
#### isAlmostEqualComplex128Array( v1, v2, maxULP )
Tests if two arguments are both [Complex128Arrays][@stdlib/array/complex128] and contain respective elements which are [approximately equal][@stdlib/assert/is-almost-equal] within a specified number of ULPs (units in the last place).
```javascript
var EPS = require( '@stdlib/constants-float64-eps' );
var Complex128Array = require( '@stdlib/array-complex128' );
var x = new Complex128Array( [ 1.0, 2.0 ] );
var y = new Complex128Array( [ 1.0+EPS, 2.0 ] );
var bool = isAlmostEqualComplex128Array( x, y, 0 );
// returns false
bool = isAlmostEqualComplex128Array( x, y, 1 );
// returns true
bool = isAlmostEqualComplex128Array( x, [ 1.0, 2.0 ], 1 );
// returns false
```
## Notes
- The function returns `false` if either input value is a `Complex128Array` containing `NaN`.
- The function does not distinguish between `-0` and `+0`, treating them as equal.
## Examples
```javascript
var Complex128Array = require( '@stdlib/array-complex128' );
var isAlmostEqualComplex128Array = require( '@stdlib/assert-is-almost-equal-complex128array' );
var x = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0 ] );
var y = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0 ] );
var out = isAlmostEqualComplex128Array( x, y, 0 );
console.log( out );
// => true
x = new Complex128Array( [ -0.0, 0.0, -0.0, 0.0 ] );
y = new Complex128Array( [ 0.0, -0.0, 0.0, -0.0 ] );
out = isAlmostEqualComplex128Array( x, y, 1 );
console.log( out );
// => true
x = new Complex128Array( [ NaN, NaN, NaN, NaN ] );
y = new Complex128Array( [ NaN, NaN, NaN, NaN ] );
out = isAlmostEqualComplex128Array( x, y, 0 );
console.log( out );
// => false
```
* * *
## 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 © 2016-2026. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-is-almost-equal-complex128array.svg
[npm-url]: https://npmjs.org/package/@stdlib/assert-is-almost-equal-complex128array
[test-image]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-is-almost-equal-complex128array/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/assert-is-almost-equal-complex128array?branch=main
[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg
[chat-url]: https://stdlib.zulipchat.com
[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[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/assert-is-almost-equal-complex128array/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/assert-is-almost-equal-complex128array/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-almost-equal-complex128array/main/LICENSE
[@stdlib/array/complex128]: https://github.com/stdlib-js/array-complex128
[@stdlib/assert/is-almost-equal]: https://github.com/stdlib-js/assert-is-almost-equal