# NAN
> Canonical single-precision complex floating-point `NaN`.
## Usage
```javascript
var COMPLEX64_NAN = require( '@stdlib/constants/complex64/nan' );
```
#### COMPLEX64_NAN
Canonical single-precision complex floating-point `NaN`.
```javascript
var realf = require( '@stdlib/complex/float32/real' );
var imagf = require( '@stdlib/complex/float32/imag' );
var re = realf( COMPLEX64_NAN );
// returns NaN
var im = imagf( COMPLEX64_NAN );
// returns NaN
```
## Examples
```javascript
var realf = require( '@stdlib/complex/float32/real' );
var imagf = require( '@stdlib/complex/float32/imag' );
var Complex64Array = require( '@stdlib/array/complex64' );
var COMPLEX64_NAN = require( '@stdlib/constants/complex64/nan' );
var x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
// returns
var v = x.get( 0 );
// returns
var re = realf( v );
// returns 1.0
var im = imagf( v );
// returns 2.0
x.fill( COMPLEX64_NAN );
v = x.get( 0 );
// returns
re = realf( v );
// returns NaN
im = imagf( v );
// returns NaN
```
[@stdlib/constants/complex128/nan]: https://github.com/stdlib-js/constants/tree/main/complex128/nan