function conj( z ) {
	return new z.constructor( z.re, -z.im );
}
Returns the complex conjugate of a single-precision complex floating-point number.

@param {Complex64} z - complex number
@returns {Complex64} complex conjugate

@example
var Complex64 = require( '@stdlib/complex/float32/ctor' );

var z = new Complex64( 5.0, 3.0 );

var v = conj( z );
// returns <Complex64>[ 5.0, -3.0 ]