Test if a value is a Float64Array.
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> Test if a value is a [Float64Array][mdn-float64array].
``bash`
npm install @stdlib/assert-is-float64array
`javascript`
var isFloat64Array = require( '@stdlib/assert-is-float64array' );
#### isFloat64Array( value )
Tests if a value is a [Float64Array][mdn-float64array].
`javascript
var Float64Array = require( '@stdlib/array-float64' );
var bool = isFloat64Array( new Float64Array( 10 ) );
// returns true
bool = isFloat64Array( [] );
// returns false
`
`javascript
var Int8Array = require( '@stdlib/array-int8' );
var Uint8Array = require( '@stdlib/array-uint8' );
var Uint8ClampedArray = require( '@stdlib/array-uint8c' );
var Int16Array = require( '@stdlib/array-int16' );
var Uint16Array = require( '@stdlib/array-uint16' );
var Int32Array = require( '@stdlib/array-int32' );
var Uint32Array = require( '@stdlib/array-uint32' );
var Float32Array = require( '@stdlib/array-float32' );
var Float64Array = require( '@stdlib/array-float64' );
var isFloat64Array = require( '@stdlib/assert-is-float64array' );
var bool = isFloat64Array( new Float64Array( 10 ) );
// returns true
bool = isFloat64Array( new Int8Array( 10 ) );
// returns false
bool = isFloat64Array( new Uint8Array( 10 ) );
// returns false
bool = isFloat64Array( new Uint8ClampedArray( 10 ) );
// returns false
bool = isFloat64Array( new Int16Array( 10 ) );
// returns false
bool = isFloat64Array( new Uint16Array( 10 ) );
// returns false
bool = isFloat64Array( new Int32Array( 10 ) );
// returns false
bool = isFloat64Array( new Uint32Array( 10 ) );
// returns false
bool = isFloat64Array( new Float32Array( 10 ) );
// returns false
bool = isFloat64Array( [] );
// returns false
bool = isFloat64Array( {} );
// returns false
bool = isFloat64Array( null );
// returns false
`
*
- [@stdlib/assert-is-float32array][@stdlib/assert/is-float32array]: test if a value is a Float32Array.
*
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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---
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Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[deno-url]: https://github.com/stdlib-js/assert-is-float64array/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-float64array/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-float64array/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-float64array/blob/umd/README.md
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[mdn-float64array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array
[@stdlib/assert/is-float32array]: https://www.npmjs.com/package/@stdlib/assert-is-float32array