function setComplex64( arr, idx, value ) {
	arr.set( value, idx );
}
Sets an element in a `Complex64Array`.

@private
@param {Complex64Array} arr - input array
@param {NonNegativeInteger} idx - element index
@param {(Collection|Complex|ComplexArray)} value - value(s)

@example
var Complex64Array = require( '@stdlib/array/complex64' );
var Complex64 = require( '@stdlib/complex/float32/ctor' );
var realf = require( '@stdlib/complex/float32/real' );
var imagf = require( '@stdlib/complex/float32/imag' );

var arr = new Complex64Array( [ 1, 2, 3, 4 ] );

setComplex64( arr, 1, new Complex64( 10.0, 11.0 ) );
var v = arr.get( 1 );
// returns <Complex64>

var re = realf( v );
// returns 10.0

var im = imagf( v );
// returns 11.0