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

typedef kv::interval<double> itv;

struct Sinc {
	template <class T> T operator()(const T& x) {
		return sin(x) / x;
	}
};

struct Sinc_s {
	template <class T> T operator()(const T& x) {
		return div_tn(sin(x), 1);
	}
};

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

	std::cout<< kv::defint_singular_autostep(Sinc(), Sinc_s(), (itv)0., (itv)1., 12) << "\n";
}