Test if a value is a 2-dimensional ndarray-like object containing double-precision floating-point numbers.
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> Test if a value is a 2-dimensional [ndarray][@stdlib/ndarray/ctor]-like object containing double-precision floating-point numbers.
``bash`
npm install @stdlib/assert-is-float64matrix-like
`javascript`
var isFloat64MatrixLike = require( '@stdlib/assert-is-float64matrix-like' );
#### isFloat64MatrixLike( value )
Tests if a value is a 2-dimensional [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 = isFloat64MatrixLike( arr );
// returns true
`
`javascript
var ndarray = require( '@stdlib/ndarray-ctor' );
var Float64Array = require( '@stdlib/array-float64' );
var isFloat64MatrixLike = require( '@stdlib/assert-is-float64matrix-like' );
var buffer = new Float64Array( [ 0, 0, 0, 0 ] );
var arr = ndarray( 'float64', buffer, [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
var out = isFloat64MatrixLike( arr );
// returns true
out = isFloat64MatrixLike( [ 1, 2, 3, 4 ] );
// returns false
out = isFloat64MatrixLike( {} );
// returns false
out = isFloat64MatrixLike( null );
// returns false
`
*
- [@stdlib/assert-is-float32matrix-like][@stdlib/assert/is-float32matrix-like]: test if a value is a 2-dimensional ndarray-like object containing single-precision floating-point numbers.
- [@stdlib/assert-is-ndarray-like][@stdlib/assert/is-ndarray-like]: test if a value is ndarray-like.
- [@stdlib/assert-is-matrix-like][@stdlib/assert/is-matrix-like]: test if a value is a 2-dimensional ndarray-like object.
*
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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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[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-float64matrix-like/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-float64matrix-like/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-float64matrix-like/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-float64matrix-like/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-float64matrix-like/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-float64matrix-like/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/assert-is-float64matrix-like/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-float64matrix-like/main/LICENSE
[@stdlib/ndarray/ctor]: https://www.npmjs.com/package/@stdlib/ndarray-ctor
[@stdlib/assert/is-float32matrix-like]: https://www.npmjs.com/package/@stdlib/assert-is-float32matrix-like
[@stdlib/assert/is-ndarray-like]: https://www.npmjs.com/package/@stdlib/assert-is-ndarray-like
[@stdlib/assert/is-matrix-like]: https://www.npmjs.com/package/@stdlib/assert-is-matrix-like