#include <iostream>#include <mtl/strided1D.h>#include <mtl/light1D.h>#include <mtl/mtl.h>intmain(){  using namespace mtl;  double dx[20], dy[20];  for (int i = 0; i < 20; ++i) {    if (i % 2 == 0) {      dx[i] = i;      dy[i] = 2*i;    } else {      dx[i] = 0;      dy[i] = 0;    }  }  light1D<double> x(dx, 20);  strided1D< light1D<double> > sx(x, -2);  light1D<double> y(dy, 20);  strided1D< light1D<double> > sy(y, -2);  if (dot(sx, sy) == dot(x, y))    std::cout << "success" << std::endl;  else    std::cout << "failure" << std::endl;  return 0;}