Method xInverse

src/util/custom-aggregate.cpp:25–27

	}

	static void xInverse(sqlite3_context* invocation, int argc, sqlite3_value** argv) {
		xStepBase(invocation, argc, argv, &CustomAggregate::inverse);
	}

	static void xValue(sqlite3_context* invocation) {
		xValueBase(invocation, false);