NDPointer
=========

.. cpp:class:: numpy::NDPointer

   numpy C++ class.

Example
-------

.. code-block:: cpp

   #include <numpy/np_ndarray.h>
   using namespace numpy;

   // Use NDPointer
   NDPointer obj;
   // ... operations ...

Other Methods
-------------

.. list-table::
   :widths: 40 20 15 25
   :header-rows: 1

   * - Signature
     - Return Type
     - Location
     - Example
   * - ``bool matches(const NDArray<T>&array)``
     - bool
     - NP_CTYPES_INTEROP.H:212
     - :ref:`View <example-ndpointer-matches-0>`


Code Examples
-------------

The following examples are extracted from the test suite.

.. _example-ndpointer-matches-0:

.. dropdown:: matches (np_test_1_all.cpp:26699)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 26689
      :emphasize-lines: 11

                  std::cout << std::string("[FAIL] ") + description << std::endl;
                  throw std::runtime_error(description);
              }
              // std::cout << "  ✓ load_library() (stub)" << std::endl;
            }
      
            // Test ndpointer
            {
              auto ptr_desc = numpy::ctypeslib::ndpointer<double>(2, { 10, 10 });
              auto arr = NDArray<double>({ 10, 10 }, 0.0);
              bool matches = ptr_desc.matches(arr);
              if (!(matches)) {
                  std::string description = std::string("test_ctypes_interop():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(matches)";
                  std::cout << std::string("[FAIL] ") + description << std::endl;
                  throw std::runtime_error(description);
              }
              // std::cout << "  ✓ ndpointer()" << std::endl;
            }
      
            // std::cout << "  [PASS] Sub-phase 6D complete (4 functions tested)" << std::endl;
          }