#include <iostream>#include <boost/numeric/linear_algebra/operators.hpp>#include <boost/numeric/linear_algebra/concepts.hpp>#include <libs/numeric/linear_algebra/test/algebraic_functions.hpp>int main(int, char* []) {    using namespace mtl;    math::add<int>     int_add;    std::cout << "equal_results(2,5,  3,4, int_add) "          << equal_results(2,5,  3,4, int_add)  << std::endl;    std::cout << "equal_results(2,4,  3,4, int_add) "          << equal_results(2,4,  3,4, int_add)  << std::endl;    std::cout << "identity_pair(2,4, int_add) "          << identity_pair(2,4, int_add)  << std::endl;    std::cout << "identity_pair(0,0, int_add) "          << identity_pair(0,0, int_add)  << std::endl << std::endl;    std::cout << "ordered_algebraic_division(3,2, int_add) "          << ordered_algebraic_division(3,2, int_add)  << std::endl;    std::cout << "ordered_algebraic_division(4,2, int_add) "          << ordered_algebraic_division(4,2, int_add)  << std::endl;    std::cout << "ordered_algebraic_division(-6,2, int_add) "          << ordered_algebraic_division(-6,2, int_add)  << std::endl;    return 0;}