Function PyArray_Empty

numpy/core/src/multiarray/ctors.c:2879–2908

NUMPY_API * Empty * * accepts NULL type * steals a reference to type */

 * steals a reference to type
 */
NPY_NO_EXPORT PyObject *
PyArray_Empty(int nd, npy_intp const *dims, PyArray_Descr *type, int is_f_order)
{
    PyArrayObject *ret;

    if (!type) type = PyArray_DescrFromType(NPY_DEFAULT_TYPE);

    /*
     * PyArray_NewFromDescr steals a ref,
     * but we need to look at type later.
     * */
    ret = (PyArrayObject *)PyArray_NewFromDescr(&PyArray_Type,
                                                type, nd, dims,
                                                NULL, NULL,
                                                is_f_order, NULL);
    if (ret == NULL) {
        return NULL;
    }

    /* Logic shared by `empty`, `empty_like`, and `ndarray.__new__` */
    if (PyDataType_REFCHK(PyArray_DESCR(ret))) {
        PyArray_FillObjectArray(ret, Py_None);
        if (PyErr_Occurred()) {
            Py_DECREF(ret);
            return NULL;
        }
    }

    return (PyObject *)ret;
}

/*
 * Like ceil(value), but check for overflow.