Adapting pointers of raw memory

The class adaptor can adapt one-dimensional raw memory pointers in place, and provide them a tensor interface. Different memory layouts are implemented for second and fourth order tensors

• Voigt’s notation for second and fourth order tensors

• Full representation for second and fourth order tensors

Full functionality of all available functions remains.

Adapting raw pointers Voigt’s notation

Without shear strains

#include <tmech/tmech.hpp>

int main()
{
    //using voigt's notation
    constexpr std::size_t Rank = 2;
    constexpr std::size_t Dim = 3;
    double ptr[6]{1,2,3,4,5,6};
    tmech::adaptor<double, Dim, Rank, tmech::voigt<Dim>> a(data);
    tmech::tensor<double, Dim, Rank> b{1,6,5, 6,2,4, 5,4,3};
    std::cout<<std::boolalpha<<(a==b)<<std::endl;
}

Running the program, produces the following output:

Shear strains

Shear strains are multiplied with 0.5

#include <tmech/tmech.hpp>

int main()
{
    //using voigt's notation
    constexpr std::size_t Rank = 2;
    constexpr std::size_t Dim = 3;
    double ptr[6]{1,2,3,4*2,5*2,6*2};
    tmech::adaptor<double, Dim, Rank, tmech::voigt<Dim,true>> a(data);
    tmech::tensor<double, Dim, Rank> b{1,6,5, 6,2,4, 5,4,3};
    std::cout<<std::boolalpha<<(a==b)<<std::endl;
}

Running the program, produces the following output:

Adapting raw pointers full representation

#include <tmech/tmech.hpp>

int main()
{
    constexpr std::size_t Rank = 2;
    constexpr std::size_t Dim = 3;
    double ptr[9]{11,12,13,21,22,23,31,32,33};
    tmech::adaptor<double, Dim, Rank, tmech::full<Dim>> a(data);
    tmech::tensor<double, Dim, Rank> b{11,12,13,21,22,23,31,32,33};
    std::cout<<std::boolalpha<<(a==b)<<std::endl;
}

Running the program, produces the following output: