Function array_preparearray

numpy/core/src/multiarray/methods.c:1007–1040

static PyObject *
array_preparearray(PyArrayObject *self, PyObject *args)
{
    PyObject *obj;
    PyArrayObject *arr;
    PyArray_Descr *dtype;

    if (PyTuple_Size(args) < 1) {
        PyErr_SetString(PyExc_TypeError,
                        "only accepts 1 argument");
        return NULL;
    }
    obj = PyTuple_GET_ITEM(args, 0);
    if (!PyArray_Check(obj)) {
        PyErr_SetString(PyExc_TypeError,
                        "can only be called with ndarray object");
        return NULL;
    }
    arr = (PyArrayObject *)obj;

    if (Py_TYPE(self) == Py_TYPE(arr)) {
        /* No need to create a new view */
        Py_INCREF(arr);
        return (PyObject *)arr;
    }

    dtype = PyArray_DESCR(arr);
    Py_INCREF(dtype);
    return PyArray_NewFromDescrAndBase(
            Py_TYPE(self), dtype,
            PyArray_NDIM(arr), PyArray_DIMS(arr), PyArray_STRIDES(arr),
            PyArray_DATA(arr),
            PyArray_FLAGS(arr), (PyObject *)self, (PyObject *)arr);
}


static PyObject *