# Float64Array Support
> Detect native [`Float64Array`][mdn-float64array] support.
## Usage
```javascript
var hasFloat64ArraySupport = require( '@stdlib/assert/has-float64array-support' );
```
#### hasFloat64ArraySupport()
Detects if a runtime environment supports [`Float64Array`][mdn-float64array].
```javascript
var bool = hasFloat64ArraySupport();
// returns
```
## Examples
```javascript
var hasFloat64ArraySupport = require( '@stdlib/assert/has-float64array-support' );
var bool = hasFloat64ArraySupport();
if ( bool ) {
console.log( 'Environment has Float64Array support.' );
} else {
console.log( 'Environment lacks Float64Array support.' );
}
```
* * *
## CLI
### Usage
```text
Usage: has-float64array-support [options]
Options:
-h, --help Print this message.
-V, --version Print the package version.
```
### Examples
```bash
$ has-float64array-support
```
[mdn-float64array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array