gravity-lang/test/unittest/math/gcf.gravity

#unittest {
	name: "Test Math.gcf()";
	error: NONE;
	result: true;
};

func main() {
	var r1 = Math.gcf(10, 1) == 1
	var r2 = Math.gcf(10, 10) == 10
	var r3 = Math.gcf(12, 15, 21) == 3
	return r1 and r2 and r3
}