npm package: @stdlib/array-base-assert-has-almost-same-values
Description: Test if two arrays have respective elements which are approximately the same value within a specified number of ULPs (units in the last place).
Author: The Stdlib Authors
Latest version: 0.1.1

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# hasAlmostSameValues

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> Test if two arrays have respective elements which are approximately the same value within a specified number of ULPs (units in the last place).

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</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/array-base-assert-has-almost-same-values
```

</section>

<section class="usage">

## Usage

```javascript
var hasAlmostSameValues = require( '@stdlib/array-base-assert-has-almost-same-values' );
```

#### hasAlmostSameValues( x, y, maxULP )

Tests if two arrays have respective elements which are approximately the same value within a specified number of ULPs (units in the last place).

```javascript
var x = [ 0, 0, 1, 0 ];
var y = [ 0, 0, 1, 0 ];

var bool = hasAlmostSameValues( x, y, 1 );
// returns true
```

</section>

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

<section class="notes">

## Notes

-   In contrast to the strict equality operator `===`, the function distinguishes between `+0` and `-0` and treats `NaNs` as the same value.
-   If provided arrays of unequal length, the function returns `false`.
-   The function does **not** skip `undefined` elements and is thus not optimized for sparse arrays.

</section>

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<!-- Package usage examples. -->

<section class="examples">

## Examples

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

```javascript
var uniform = require( '@stdlib/random-array-uniform' );
var Complex128Array = require( '@stdlib/array-complex128' );
var hasAlmostSameValues = require( '@stdlib/array-base-assert-has-almost-same-values' );

var buf = uniform( 10, 0, 10 );
// returns <Float64Array>

var x = new Complex128Array( buf );
// returns <Complex128Array>

var y = new Complex128Array( buf );
// returns <Complex128Array>

var out = hasAlmostSameValues( x, y, 1 );
// returns true
```

</section>

<!-- /.examples -->

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* * *

## 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].

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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