Function array_scalar_forward

numpy/core/src/multiarray/number.c:867–900

* Convert the array to a scalar if allowed, and apply the builtin function * to it. The where argument is passed onto Py_EnterRecursiveCall when the * array contains python objects. */

 * array contains python objects.
 */
NPY_NO_EXPORT PyObject *
array_scalar_forward(PyArrayObject *v,
                     PyObject *(*builtin_func)(PyObject *),
                     const char *where)
{
    if (check_is_convertible_to_scalar(v) < 0) {
        return NULL;
    }

    PyObject *scalar;
    scalar = PyArray_GETITEM(v, PyArray_DATA(v));
    if (scalar == NULL) {
        return NULL;
    }

    /* Need to guard against recursion if our array holds references */
    if (PyDataType_REFCHK(PyArray_DESCR(v))) {
        PyObject *res;
        if (Py_EnterRecursiveCall(where) != 0) {
            Py_DECREF(scalar);
            return NULL;
        }
        res = builtin_func(scalar);
        Py_DECREF(scalar);
        Py_LeaveRecursiveCall();
        return res;
    }
    else {
        PyObject *res;
        res = builtin_func(scalar);
        Py_DECREF(scalar);
        return res;
    }
}


NPY_NO_EXPORT PyObject *