Function test_slice

python/include/unsupported/test/cxx11_tensor_ref.cpp:91–116

static void test_slice()
{
  Tensor<float, 5> tensor(2,3,5,7,11);
  tensor.setRandom();

  Eigen::DSizes<ptrdiff_t, 5> indices(1,2,3,4,5);
  Eigen::DSizes<ptrdiff_t, 5> sizes(1,1,1,1,1);
  TensorRef<Tensor<float, 5>> slice = tensor.slice(indices, sizes);
  VERIFY_IS_EQUAL(slice(0,0,0,0,0), tensor(1,2,3,4,5));

  Eigen::DSizes<ptrdiff_t, 5> indices2(1,1,3,4,5);
  Eigen::DSizes<ptrdiff_t, 5> sizes2(1,1,2,2,3);
  slice = tensor.slice(indices2, sizes2);
  for (int i = 0; i < 2; ++i) {
    for (int j = 0; j < 2; ++j) {
      for (int k = 0; k < 3; ++k) {
        VERIFY_IS_EQUAL(slice(0,0,i,j,k), tensor(1,1,3+i,4+j,5+k));
      }
    }
  }

  Eigen::DSizes<ptrdiff_t, 5> indices3(0,0,0,0,0);
  Eigen::DSizes<ptrdiff_t, 5> sizes3(2,3,1,1,1);
  slice = tensor.slice(indices3, sizes3);
  VERIFY_IS_EQUAL(slice.data(), tensor.data());
}


static void test_ref_of_ref()