npm package: @stdlib/assert-is-almost-equal-complex128array
Description: 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).
Author: The Stdlib Authors
Latest version: 0.1.1

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# isAlmostEqualComplex128Array

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

<section class="installation">

## Installation

```bash
npm install @stdlib/assert-is-almost-equal-complex128array
```

</section>

<section class="usage">

## Usage

<!-- eslint-disable id-length -->

```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).

<!-- eslint-disable id-length -->

```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
```

</section>

<!-- /.usage -->

<section class="notes">

## 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.

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

<!-- eslint-disable id-length -->

```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
```

</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

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

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

</section>

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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-almost-equal-complex128array/main/LICENSE

[@stdlib/array/complex128]: https://www.npmjs.com/package/@stdlib/array-complex128

[@stdlib/assert/is-almost-equal]: https://www.npmjs.com/package/@stdlib/assert-is-almost-equal

</section>

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