# conj
> Return the [complex conjugate][complex-conjugate] of a complex number.
## Usage
```javascript
var conj = require( '@stdlib/complex/conj' );
```
#### conj( z )
Returns the [complex conjugate][complex-conjugate] of a `complex` number.
```javascript
var Complex128 = require( '@stdlib/complex/float64' );
var z = new Complex128( 5.0, 3.0 );
var str = z.toString();
// returns '5 + 3i'
var v = conj( z );
str = v.toString();
// returns '5 - 3i'
```
## Examples
```javascript
var Complex128 = require( '@stdlib/complex/float64' );
var randu = require( '@stdlib/random/base/randu' );
var round = require( '@stdlib/math/base/special/round' );
var conj = require( '@stdlib/complex/conj' );
var re;
var im;
var z;
var i;
for ( i = 0; i < 100; i++ ) {
re = round( (randu()*100.0) - 50.0 );
im = round( (randu()*50.0) - 25.0 );
z = new Complex128( re, im );
console.log( 'conj(%s) = %s', z.toString(), conj( z ).toString() );
}
```
[complex-conjugate]: https://en.wikipedia.org/wiki/Complex_conjugate