Tensor Custom Index / Normal index

#include <iostream>
#include <memory>
#include <type_traits>
#include <Eigen/CXX11/Tensor>



void main(){

    using T = Tensor<double, 3>;
    T tensor(5,5,5);

    using CustomIndex = Matrix<unsigned int,3,1>;
    CustomIndex indicesC(3,1,2);

    using NormalIndex = DSizes<ptrdiff_t, 3>;
    NormalIndex indices(3,1,2);


    EIGEN_ASM_COMMENT("Normal INDEX");
    auto s = tensor.coeff(indices);
    EIGEN_ASM_COMMENT("Normal INDEX END");
    std::cout << s << std::endl;
    EIGEN_ASM_COMMENT("CUSTOM INDEX");
    auto s2 = tensor.coeff(indicesC);
    EIGEN_ASM_COMMENT("CUSTOM INDEX END");
    std::cout << s << s2 << std::endl;
}