#include <boost/numeric/ublas/io.hpp>
#include "lu_solve.hpp"

namespace bnu=boost::numeric::ublas;

void test1()
{
	bnu::matrix<double> A(3,3);
	A(0,0) = 1; A(0,1) = 2; A(0,2) = 3;
	A(1,0) = 3; A(1,1) = 5; A(1,2) = 7;
	A(2,0) = 1; A(2,1) = 3; A(2,2) = 4;

	std::cout<<"A="<<A<<std::endl;

	bnu::vector<double> v(3);
	v(0) = 3; v(1) = 0; v(2) = 1;
	std::cout<<"b="<<v<<std::endl;

	lu_solve(A,v);

	std::cout<<"x="<<v<<std::endl;
}

void test2(size_t N=1024)
{
	bnu::matrix<double> A(N,N);
	for(size_t i=0; i<N; i++)
		A(i,i) = 1;

	bnu::vector<double> v(N);
	for(size_t i=0; i<N; i++)
		v(i) = i/10.0;

	lu_solve(A,v);

//	std::cout<<"x="<<v<<std::endl;
}

int main()
{
	std::cout<<"start..."<<std::endl;
//  test1();
	test2(500);
	std::cout<<"stop"<<std::endl;
	return 0;
}
//---------------------------------------------------------------------------