function mul( z1, z2 ) {
	var re1 = realf( z1 );
	var re2 = realf( z2 );
	var im1 = imagf( z1 );
	var im2 = imagf( z2 );
	var re = f32(re1*re2) - f32(im1*im2);
	var im = f32(re1*im2) + f32(im1*re2);
	return new Complex64( f32( re ), f32( im ) );
}
Multiplies two single-precision complex floating-point numbers.

@param {Complex64} z1 - complex number
@param {Complex64} z2 - complex number
@returns {Complex64} result

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

var z1 = new Complex64( 5.0, 3.0 );
var z2 = new Complex64( -2.0, 1.0 );

var out = mul( z1, z2 );
// returns <Complex64>[ -13.0, -1.0 ]