#include <iostream>
#include <kv/defint-singular.hpp>

typedef kv::interval<double> itv;

struct LogF {
	template <class T> T operator()(const T& x) {
		return log(x) / (x + 1);
	}
};

struct LogF_s {
	template <class T> T operator()(const T& x) {
		return 1 / (x + 1);
	}
};

int main() {
	std::cout.precision(17);

	std::cout << kv::defint_log_autostep(LogF(), LogF_s(), (itv)0., (itv)1., 12) << "\n";
}