# Number of Bytes
> Size (in bytes) of a 128-bit complex number.
## Usage
```javascript
var COMPLEX128_NUM_BYTES = require( '@stdlib/constants/complex128/num-bytes' );
```
#### COMPLEX128_NUM_BYTES
Size (in bytes) of a 128-bit complex number.
```javascript
var bool = ( COMPLEX128_NUM_BYTES === 16 );
// returns true
```
## Examples
```javascript
var COMPLEX128_NUM_BYTES = require( '@stdlib/constants/complex128/num-bytes' );
console.log( COMPLEX128_NUM_BYTES );
// => 16
```