Method run_permute

src/core/CPP/kernels/CPPPermuteKernel.cpp:69–111

template <typename T>
void CPPPermuteKernel::run_permute(const Window &window)
{
    // Permute strides
    Strides strides      = _output->info()->strides_in_bytes();
    Strides perm_strides = strides;
    permute_strides(perm_strides, _perm);

    // Create output window
    Window                  window_out(window);
    const Window::Dimension zero_window = Window::Dimension(0, 0, 0);
    for (size_t d = 0; d <= _perm.num_dimensions(); ++d)
    {
        window_out.set(d, zero_window);
    }

    // Create iterators
    Iterator in(_input, window);
    Iterator out(_output, window_out);

    if (_input->info()->num_dimensions() <= 3)
    {
        execute_window_loop(
            window,
            [&](const Coordinates &id)
            {
                const int idx = id[0] * perm_strides[0] + id[1] * perm_strides[1] + id[2] * perm_strides[2];
                *(reinterpret_cast<T *>(out.ptr() + idx)) = *(reinterpret_cast<const T *>(in.ptr()));
            },
            in, out);
    }
    else if (_input->info()->num_dimensions() >= 4)
    {
        execute_window_loop(
            window,
            [&](const Coordinates &id)
            {
                const int idx = id[0] * perm_strides[0] + id[1] * perm_strides[1] + id[2] * perm_strides[2] +
                                id[3] * perm_strides[3];
                *(reinterpret_cast<T *>(out.ptr() + idx)) = *(reinterpret_cast<const T *>(in.ptr()));
            },
            in, out);
    }
}

CPPPermuteKernel::CPPPermuteKernel() : _func(), _input(nullptr), _output(nullptr), _perm()
{