npm package: @stdlib/assert-is-float64ndarray-like
Description: Test if a value is an ndarray-like object containing double-precision floating-point numbers.
Author: The Stdlib Authors
Latest version: 0.2.3

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# isFloat64ndarrayLike

[![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 a value is an [ndarray][@stdlib/ndarray/ctor]-like object containing double-precision floating-point numbers.

<section class="installation">

## Installation

```bash
npm install @stdlib/assert-is-float64ndarray-like
```

</section>

<section class="usage">

## Usage

```javascript
var isFloat64ndarrayLike = require( '@stdlib/assert-is-float64ndarray-like' );
```

#### isFloat64ndarrayLike( value )

Tests if a value is an [ndarray][@stdlib/ndarray/ctor]-like object whose underlying data type is `float64`.

```javascript
var Float64Array = require( '@stdlib/array-float64' );
var ndarray = require( '@stdlib/ndarray-ctor' );

var arr = ndarray( 'float64', new Float64Array( [ 0, 0, 0, 0 ] ), [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );

var bool = isFloat64ndarrayLike( arr );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var ndarray = require( '@stdlib/ndarray-ctor' );
var Float64Array = require( '@stdlib/array-float64' );
var isFloat64ndarrayLike = require( '@stdlib/assert-is-float64ndarray-like' );

var buffer = new Float64Array( [ 0, 0, 0, 0 ] );
var arr = ndarray( 'float64', buffer, [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );

var out = isFloat64ndarrayLike( arr );
// returns true

out = isFloat64ndarrayLike( [ 1, 2, 3, 4 ] );
// returns false

out = isFloat64ndarrayLike( {} );
// returns false

out = isFloat64ndarrayLike( null );
// returns false
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/assert-is-float32ndarray-like`][@stdlib/assert/is-float32ndarray-like]</span><span class="delimiter">: </span><span class="description">test if a value is an ndarray-like object containing single-precision floating-point numbers.</span>
-   <span class="package-name">[`@stdlib/assert-is-ndarray-like`][@stdlib/assert/is-ndarray-like]</span><span class="delimiter">: </span><span class="description">test if a value is ndarray-like.</span>

</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/ndarray/ctor]: https://www.npmjs.com/package/@stdlib/ndarray-ctor

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[@stdlib/assert/is-float32ndarray-like]: https://www.npmjs.com/package/@stdlib/assert-is-float32ndarray-like

[@stdlib/assert/is-ndarray-like]: https://www.npmjs.com/package/@stdlib/assert-is-ndarray-like

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</section>

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